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The present work aims to evaluate the roles of methyl jasmonate (MeJA) in the formation of volatile organic compounds (VOC) from grape tomatoes during ripening. Fruits were treated with MeJA, ethylene, 1-MCP (1-methylcyclopropene), and MeJA+1-MCP, with analyses of the VOC and levels of the gene transcripts for the enzymes lipoxygenase (LOX), alcohol dehydrogenase (ADH), and hydroperoxide lyase (HPL). An intimate relationship between MeJA and ethylene in aroma formation was detected, mainly among the VOC from the carotenoid pathway. Expression of the fatty acid transcripts, LOXC, ADH, and HPL pathway genes, was reduced by 1-MCP, even when associated with MeJA. In ripe tomato, MeJA increased most of the volatile C6 compounds, except 1-hexanol. The MeJA+1-MCP treatment followed most of the increases in volatile C6 compounds that were increased by MeJA alone, which evidenced some ethylene-independent mechanism in the production of the volatile C6 compounds. In ripe tomato, MeJA and MeJA+1-MCP increased the levels of 6-methyl-5-hepten-2-one, which is derived from lycopene, evidencing an ethylene-independent biosynthetic process.

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Cashew apple, the hypertrophied peduncle of cashew nut, is a functional food with a high antioxidant activity and with good characteristics for juice industrialization and fresh consumption such as fleshy pulp, soft peel, without seeds, and exotic flavor. However, it is still poorly used or totally wasted. For this reason, the quality of cashew apples has received more attention from the Brazilian breeding program to maximize their uses. In this study, the volatile compound profiles of peduncles of seven cashew clones and their relation to the aroma and flavor differences were investigated. Nine trained panelists evaluated the cashew apples by descriptive analysis. After the standardization of headspace solid-phase microextraction (HS-SPME) extraction and chromatographic conditions, the volatile organic compounds were analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 48 compounds were identified with esters being the major chemical class, both in number of compounds and chromatographic peak area. The targeted and untargeted principal component analysis (PCA) analyses showed complementary and corroborative results from the cashew apple volatile composition based on genotype. The partial least squares (PLS) modeling revealed the high correlation of the unpleasant sensory attributes with the PRO805 and CAPI17 clones; sweet taste and sweet odor with the CCP76 clone; and cashew aroma/cashew flavor with the EMBRAPA51, HAC276, PRO555, and SLC12.20 clones. The correlation between the most relevant volatile organic compounds (VOC) for cashew apples and the sensory descriptors showed that the compounds methyl butanoate, methyl 3-methylbutanoate, ethyl 2-methylbutanoate, methyl 2-butenoate, methyl 3-methylpentanoate, 3-carene, methyl (E)-2-methyl-2-butenoate, ethyl 4-methylpentanoate, 2-hexenal, butyl 3-methylbutanoate, butyl pentanoate, and 3-methyl butanoic acid were important to explain differences in the characteristic fruit aroma and flavor of cashew apples among the studied clones. PRACTICAL APPLICATION: Cashew crops have been developed by using improved clones with increased nut productivity and resistance to diseases. The Brazilian genetic improvement program is also seeking to improve the quality of peduncles to maximize their use and prevent their destination as agricultural waste. In this study, the volatile profile of peduncles of seven cashew clones was determined and its correlation with the differences in their aroma and flavor attributes established. The results will provide important information about the potential of the new materials for fresh consumption and for the manufacturing of cashew juices, in addition to be used by breeders interested in improving the aroma of the fruit.

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This work reports the characterisation of caseinolytic and milk-clotting activities of proteases extracted from ripe fruits of Morinda citrifolia L., as a potential of their use in cheese production. Noni puree extract (NPE) was obtained by homogenising the fresh puree in 150 mM NaCl/50 mM sodium phosphate buffer (pH 7.0). The resulting protein concentration was of 0.367 ±â€¯0.006 mg/mL, and an electrophoretic profile of the extract revealed protein bands ranging from 14 to 55 kDa. The proteolytic activity of NPE was higher when the extract had been previously incubated at pH 6.0 (8.859 ±â€¯0.216 U/mg), whereas the optimum caseinolytic activity was observed at 50 °C. Noni puree proteases were strongly (98%) inhibited by iodoacetamide and E-64, suggesting the presence of only cysteine proteases in the crude extract. NPE proteases showed a milk-clotting activity (MCA) of 238.80 ±â€¯5.29 U/mL, a specific milk-clotting activity (SMCA) of 9950.17 ±â€¯220.74 U/mg, and an SMCA/PA ratio of 1124.31 ±â€¯24.94, this last being comparable to those of commercial calf rennet. The cheese manufactured using NPE presented brittle and soft texture, high humidity, and showed sanitary conditions compatible with current Brazilian regulations. The product showed a slightly bitter taste, but still good acceptability, rating between 6 and 7 in the hedonic scale for flavour, texture, and overall acceptance. Lastly, there was 60% of positive purchase intent, demonstrating that noni fruit is a promising source of milk-clotting enzymes for the dairy industry.

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BACKGROUND: The quality and power of each odorous volatile present in the headspace of unifloral honey velame branco (Croton heliotropiifolius Kunth) prepared by stingless uruçu (Melipona scutellaris Latrelle) were evaluated using the gas chromatography-olfactometry Osme technique. Five trained panellists evaluated the sensory chromatographic effluent in three replications, and the results were integrated by SCDTI software. RESULTS: Of the 42 compounds identified in the chromatogram, 17 odorous stimuli were detected by the sensory panel. Among these compounds, the most odoriferous impacts were pentanoate acetate 'ripe fruit', safranal green, medicinal plant and methyl eugenol 'clove, tea'. The furaneol compounds, hotrienol and benzaldehyde showed aroma notes associated with honey. CONCLUSION: These results are important since, in addition to revealing the presence of compounds that are not identified by other analytical methods, they can also assist in the verification of monofloral honeys compliance. © 2019 Society of Chemical Industry.

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Cashew gum and maltodextrin microcapsules containing green tea leaf extracts were made using a spray-dryer. Green tea extracts were submitted to cytotoxicity analysis and characterization of bioactive compounds. Three formulations of microcapsules were performed, which were then submitted to characterization through morphological study, particle diameter and distribution, zeta potential, Exploratory Differential Calorimetry, entrapment efficiency, dissolution test and X-ray diffraction. The extract had a high bioactive compound content and no cytotoxicity was observed. The amorphous microcapsules presented irregular shapes with a circular predominance and dentate surface, mean diameters varying from 2.50 to 3.64 µm, solubility ranging from 63% to 72.66%. Low values of microencapsulation efficiency, zeta potencial and dissolution profile were observed. The microparticles based on the dry extract of green tea present potential as a food ingredient and as a promoter of health benefits.

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Introdução: Crianças geralmente rejeitam medicamentos não palatáveis. Formulações pediátricas contêm edulcorantes e flavorizantes para mascarar o sabor desagradável e evitar problemas na administração e adesão. A avaliação do sabor é parte essencial do desenvolvimento de medicamentos líquidos orais. Objetivo: Este trabalho visa contextualizar a palatabilidade, sua avaliação e influência na aceitação de medicamentos pediátricos. Método: Revisão narrativa da literatura através das bases eletrônicas PubMed e Google Acadêmico. Excluíram-se artigos relacionados ao desenvolvimento de formulações, uso de língua eletrônica e resumos sem acesso ao trabalho completo. Resultados: O sabor é considerado um dos principais determinantes para a adesão em pediatria. O acesso a formulações pediátricas palatáveis e seguras pode ter um efeito substancial sobre a morbidade infantil. Adultos e crianças apreciam gostos de formas diferentes, então testes sensoriais em crianças são o método mais confiável para a avaliação do sabor de formulações para esse público. Estudos da percepção sensorial e aceitação de medicamentos já utilizados pelas crianças podem ser eticamente viáveis, dadas as preocupações acerca de pesquisas com crianças. Conclusões: Análises sensoriais devem ser realizadas sempre que se deseje introduzir no mercado uma nova formulação, destinada a diferentes faixas etárias e contextos culturais, a fim de avaliar a aceitabilidade do produto.

Introduction: Children often reject non-palatable medications. Pediatric formulations contain sweeteners and flavorings to mask the unpleasant taste and avoid problems in administration and adherence. Taste assessment is an essential part of the development of oral liquid medicines. Objective: This paper aims to contextualize assessment and influence of palatability on the acceptance of pediatric medicines. Method: Narrative review of the literature through the electronic databases PubMed and Google Scholar. Articles related to the development of formulations, use of electronic tongue, and abstracts without access to the complete work were not considered. Results: Flavor is considered one of the main determinants for medications' adhesion in pediatrics. Access to palatable and safe pediatric formulations can have a substantial effect on infant morbidity. Adults and children appreciate flavors in different ways, so sensory testing with children is the most reliable method regarding formulations for this population. Studies of sensory perception and acceptance of medications already used by children may be ethically feasible, given the concerns about research with children. Conclusions: Sensory analyzes should be carried out whenever there is a new formulation to be introduced on the market, addressed to different age brackets and cultural contexts, in order to assess the product's acceptability.

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Monofloral honeys produced by stingless bees M. subnitida Ducke and M. scutellaris Latrelle in typical flowering of the Brazilian semi-arid Ziziphus juazeiro Mart (juazeiro), Croton heliotropiifolius Kunth (velame branco) and Mimosa arenosa willd Poir (jurema branca) were characterized in relation to volatile and sensorial profile. It identified 11 sensory descriptors and 96 volatile compounds. It was noticed a strong effect of flowering in sensorial profile and volatile of honeys. Juazeiro honey stood out with a higher characteristic aroma, taste sweet, caramel flavor and levels of aromatic aldehydes; jurema honey has been described with herb and beeswax aroma and the presence of sulfur compounds and ketones; volatile acids associated with acid taste, medicinal taste and clove aroma characterized the velame branco honey. These results demonstrate that the knowledge of the sensory and aroma profile of these honeys can contribute to characterization of its floral and geographical identity.

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Optimization of the extraction conditions to investigate the volatile composition of papaya fruit involving headspace solid phase micro-extraction was carried out using multivariate strategies such as factorial design and response surface methodology. The performance of different combinations of time for reaching the equilibrium in the headspace and time for maximum extraction of volatiles was evaluated by GC-olfactometry of the extract (intensity of papaya characteristic aroma), number of peaks and total area in the chromatogram. Thirty-two compounds were identified by GC-MS under the optimized extraction conditions, the majority of which were aldehydes, both in number of compounds and area. Major compounds were δ-octalactone, ß-citral, benzaldehyde, heptanal, benzyl isothiocyanate, isoamyl acetate, γ-octalactone, (E)-linalool oxide and benzyl alcohol. Seven aldehydes and two other compounds are reported for the first time in papaya's volatile profile.

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Syrup obtained from yacon roots could be well positioned as a nutritional product due to its high fructooligosaccharides (FOS) content. Considering this, we examined the potential food applications of yacon syrup, using the focal group methodology, and its sensorial acceptability when incorporated in yogurt. The beneficial effects of the consumption of yacon syrup were studied over a 2-week period in a double-blind placebo-controlled experiment (namely Test A) and other consistent of only one day of yacon syrup consumption (namely Test B) were also evaluated. The doses of yacon syrup for both experiments were 8.74g of FOS/day. Energy intake, hunger, satiety, fullness and prospective food consumption were assessed with analogue scales at the end of each test. The results indicate that the yogurt was the food most suggested by the focus group, and the average of the scores given to the attributes when the yacon syrup was incorporated into a yogurt were: 7.78 for appearance; 7.72 for aroma; 7.02 for flavor and 6.96 for overall acceptability, corresponding to "like very much" and "like moderately". Furthermore, the results indicate that yacon syrup has a positive effect on appetite and its effect was dependent on gender and period of intervention, being statistically significant (P<0.05) in women, after 2-week period. These findings suggested that increasing FOS intake could help to increase satiety, and consequently, be helpful in the management of type 2-diabetes or control of the current high prevalence of overweight or obesity.

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O desenvolvimento de bebidas com perfil funcional deve considerar também a conservação dos compostos ou propriedades funcionais durante o período de armazenamento. Assim, o objetivo do presente trabalho foi avaliar a estabilidade de uma bebida funcional de frutas tropicais e yacon durante o armazenamento em refrigeração (5°C). A bebida, composta por 50% de extrato de yacon e 50% de blend de frutas tropicais (camu-camu, acerola, caju, cajá, açaí e abacaxi) foi pasteurizada (90 segundos/85°C) e armazenada sob refrigeração (5°C). No tempo inicial, e a cada 45 dias do período de estocagem, foram determinados os compostos bioativos (ácido ascórbico e polifenóis extraíveis totais), atividade antioxidante total, sólidos solúveis totais, acidez total titulável, pH, cor (L*, a* e b*), açúcares totais, sacarose, glicose e frutose, sendo que a análises físicas e químicas foram limitadas pela diminuição da atividade antioxidante total e de seus componentes bioativos. A bebida manteve relativa qualidade física e química durante o período de armazenamento, sendo que em 225 dias de estocagem, os teores de polifenóis extraíveis totais e atividade antioxidante total apresentaram uma queda mais acentuada, e desta forma, estes parâmetros foram avaliados somente até este período. Porém, o principal limitante para o armazenamento da bebida foi devido a aceitabilidade sensorial e segurança microbiológica, que embora de acordo com a legislação vigente, limitou o período de armazenamento para 90 dias(AU)

The development of beverages with functional properties must consider the preservation of the bioactive or functional properties during storage. For this reason, the aim of this study was to evaluate the stability of a functional beverage of tropical fruits and yacon, stored under refrigeration. The beverage, composed by 50% of yacon and 50% of a blended tropical fruits (camu-camu, acerola, cashew-apple, yellow mombin, acai and pineapple), was pasteurized (90 seconds/ 85°C) and stored under refrigeration (5°C). After processing and on 45 day intervals until the end of storage, were assayed the bioactive compounds (ascorbic acid and total extractable polyphenols), antioxidant activity, total soluble solids, titratable total acidity, pH, color (L*, a* and b*), total sugar content, sucrose, glucose and fructose, and nd the physical and chemical analyzes were limited by decreased total antioxidant activity and their bioactive components. The beverage showed relative physical and chemical quality during storage period , and in the 225 days of storage, the total extractable polyphenols and total antioxidant activity showed a significantly decline , and thus , these parameters were evaluated only until this period. However, the main limitation for the beverage storage was due to sensory acceptability and microbiological safety, which although in accordance with Brazilian legislation, limited storage period for 90 days(AU)

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The development of beverages with functional properties must consider the preservation of the bioactive or functional properties during storage. For this reason, the aim of this study was to evaluate the stability of a functional beverage of tropical fruits and yacon, stored under refrigeration. The beverage, composed by 50% of yacon and 50% of a blended tropical fruits (camu-camu, acerola, cashew-apple, yellow mombin, acai and pineapple), was pasteurized (90 seconds/ 85°C) and stored under refrigeration (5°C). After processing and on 45 day intervals until the end of storage, were assayed the bioactive compounds (ascorbic acid and total extractable polyphenols), antioxidant activity, total soluble solids, titratable total acidity, pH, color (L*, a* and b*), total sugar content, sucrose, glucose and fructose, and nd the physical and chemical analyzes were limited by decreased total antioxidant activity and their bioactive components. The beverage showed relative physical and chemical quality during storage period, and in the 225 days of storage, the total extractable polyphenols and total antioxidant activity showed a significantly decline, and thus , these parameters were evaluated only until this period. However, the main limitation for the beverage storage was due to. sensory acceptability and microbiological safety, which although in accordance with Brazilian legislation, limited storage period for 90 days.

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This study evaluated the influence of lactation stage (early, middle, late) and management practices (milking hygiene and buck presence) on the sensory attributes of Saanen goat milk. Goats were randomly divided in four groups in respect of different milking sanitary procedures and the presence/absence of the buck in the barn. Milk samples were analyzed for sensory attributes including quantitative descriptive analysis (QDA) and acceptance. The milking hygiene practice caused no significant influence on microbiological parameters. Results of QDA revealed that the buck presence increased the characteristic odor of milk at the middle and late lactation stages. The off-odor and off-flavor descriptors showed a distinct response since a higher intensity of these sensory characteristics was noted in the samples obtained from goats maintained without the buck. Odor and flavor contributed most in characterizing the different samples regardless of the management practice and lactation stage. The acceptance of odor showed to be influenced only by the lactation stage, while the acceptance of flavor was only through the presence of the buck. Odor acceptance correlated negatively to off-odor and off-flavor, suggesting that these two sensory attributes impaired the preference for the aroma of the milk samples.

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This study aimed to determine the volatile profile of cashew apple fibers to verify which compounds are still present after successive washings and thus might be responsible for the undesirable remaining cashew-like aroma present in this co-product, which is used to formulate food products like vegetarian burgers and cereal bars. Fibers were obtained from cashew apple juice processing and washed five times in an expeller press. Compounds were analyzed by the headspace solid-phase micro extraction technique (HS-SPME) and gas chromatography-mass spectrometry (GC-MS), using a DB-5 column. Sensory analysis was also performed to compare the intensity of the cashew-like aroma of the fibers with the original juice. Altogether, 80 compounds were detected, being esters and terpenes the major chemical classes. Among the identified substances, 14 were classified as odoriferous in the literature, constituting the matrix used in the Principal Component Analysis (PCA). Odoriferous esters were substantially reduced, but many compounds were extracted by the strength used in the expeller press and remained until the last wash. Among them are the odoriferous compounds ethyl octanoate, γ-dodecalactone, (E)-2-decenal, copaene, and caryophyllene that may contribute for the mild but still perceptible cashew apple aroma in the fibers that have been pressed and washed five times. Development of a deodorization process should include reduction of pressing force and stop at the second wash, to save water and energy, thus reducing operational costs and contributing to process sustainability.

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The present study aimed to evaluate the volatiles profile of red mombin (Spondias purpurea) pulp and its powder produced by spray-drying (SD) as an example to show utility of headspace solid-phase microextraction (HS-SPME) in the analysis of parameters such as the quality and stability of fruit products. Volatiles profiles of the pulp were identified by gas chromatography-mass spectrometry (GC-MS), quantified by gas chromatography-flame ionization detector (GC-FID) and compared to the profile of the powder stored at 0, 60 and 120 days in plastic (PP) or laminated packages (LP). The results showed that the technique was able to identify 36 compounds in the red mombin pulp, 17 out of which have been described for the first time in this fruit, showing that red mombin fresh pulp appears to be unique in terms of volatiles composition. However, only 24 compounds were detected in the powder. This decrease is highly correlated (r2 = 0.99), at least for the majority of compounds, to the degree of volatility of compounds. Furthermore, the powder stored in PP or LP showed no statistical differences in the amounts of its components for a period of 120 days of storage. Finally, this work shows how HS-SPME analysis can be a valuable tool to assess the quality and stability of fruit products.

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As frutas são fontes ricas de nutrientes e os sucos de frutas são formas mais populares de consumi-las. O desenvolvimento de sucos mistos, em que duas ou mais frutas são misturadas para se obter um produto que combina o valor nutricional das frutas, tem sido estimulado pela indústria de alimentos e bem aceita pelos consumidores. Este trabalho teve como objetivo desenvolver néctares mistos de frutas tropicais (caju, manga e acerola) e comparar os dados de aceitabilidade por teste de média e análises estatísticas multivariadas de agrupamento hierárquico e componentes principais. O resultado do teste de médias indicou uma maior aceitação para os néctares com maiores teores de manga e caju e menores teores de acerola. A formulação contendo 12,25% de polpa de caju, 21% de polpa de manga e 1,75% de polpa de acerola teve o maior escore na avaliação global. No entanto, pode ser observado pela análise de cluster de dados dos consumidores e posterior análise de componentes principais destes resultados claramente uma segmentação dos consumidores.

Fruits are a rich source of nutrients and fruit juices are a popular way of consuming them. Development of mixed juices, where two or more fruit juices are blended to obtain a product that combines the nutritional value of fruits, has been encouraged by the food industry and well accepted by consumers. This work aimed to develop mixed nectars of tropical fruits (cashew apple, mango and acerola) and to compare the acceptability data by mean test and multivariate statistical analysis of hierarchic grouping and principal compounds. The tropical fruit nectars showed good acceptability, the formulations with higher mango and cashew and lower acerola contents the most accepted. The formulation with 12.25% cashew apple pulp, 21% mango pulp and 1.75% acerola pulp had the highest global evaluation score. However, it could be observed by the cluster analysis of consumers data and posterior principal components analysis of these results a clearly segmentation of consumers.

RESUMO

As frutas são fontes ricas de nutrientes e os sucos de frutas são formas mais populares de consumi-las. O desenvolvimento de sucos mistos, em que duas ou mais frutas são misturadas para se obter um produto que combina o valor nutricional das frutas, tem sido estimulado pela indústria de alimentos e bem aceita pelos consumidores. Este trabalho teve como objetivo desenvolver néctares mistos de frutas tropicais (caju, manga e acerola) e comparar os dados de aceitabilidade por teste de média e análises estatísticas multivariadas de agrupamento hierárquico e componentes principais. O resultado do teste de médias indicou uma maior aceitação para os néctares com maiores teores de manga e caju e menores teores de acerola. A formulação contendo 12,25% de polpa de caju, 21% de polpa de manga e 1,75% de polpa de acerola teve o maior escore na avaliação global. No entanto, pode ser observado pela análise de cluster de dados dos consumidores e posterior análise de componentes principais destes resultados claramente uma segmentação dos consumidores.

Fruits are a rich source of nutrients and fruit juices are a popular way of consuming them. Development of mixed juices, where two or more fruit juices are blended to obtain a product that combines the nutritional value of fruits, has been encouraged by the food industry and well accepted by consumers. This work aimed to develop mixed nectars of tropical fruits (cashew apple, mango and acerola) and to compare the acceptability data by mean test and multivariate statistical analysis of hierarchic grouping and principal compounds. The tropical fruit nectars showed good acceptability, the formulations with higher mango and cashew and lower acerola contents the most accepted. The formulation with 12.25% cashew apple pulp, 21% mango pulp and 1.75% acerola pulp had the highest global evaluation score. However, it could be observed by the cluster analysis of consumers data and posterior principal components analysis of these results a clearly segmentation of consumers.

RESUMO

O Mal da Sigatoka Negra é devastador para as cultivares tradicionais de banana. No Brasil, cultivares resistentes estão sendo desenvolvidas, mas se a preferência do consumidor não for considerada, o programa de melhoramento pode falhar. Neste trabalho, a aceitabilidade de quatro cultivares resistentes foi acessada no Nordeste brasileiro e comparada a quatro variedades comerciais. Dois grupos de consumidores participaram: adultos jovens e donas de casa. Escala hedônica foi aplicada para aparência externa dos cachos, aceitação global e aceitação por atributos dos frutos (aparência sem a casca, aroma, sabor e textura), além de testes de preferência e intenção de compra. Os dados foram submetidos à ANOVA e Mapa de Preferência Interno. Mulheres e jovens mostraram opiniões semelhantes. As cultivares 'Preciosa' e 'Pacovan Ken' mostraram ser as mais promissoras, sendo que a primeira já pode substituir as cultivares comerciais 'Prata' e 'Pacovan' sem prejudicar a sua aceitabilidade, mas a 'Pacovan Ken' ainda precisa ser melhorada quanto à aparência.

The Black Sigatoka Disease is devastating to traditional banana cultivars. In Brazil, resistant cultivars are being developed but if the consumer's preference is not taken into account, the breeding program may not succeed. In this research the acceptability of four resistant cultivars was accessed in the Northeastern Brazilian region and compared to four commercial varieties. Two groups of consumers participated: young adults and housewives. Hedonic scale was applied to external appearance of bunches, global acceptance and acceptance of fruits' attributes (appearance without peel, aroma, flavor and texture). Preference and purchase intent were also evaluated. Data were submitted to ANOVA and Preference Mapping. Women and young adults showed similar opinions. 'Preciosa' and 'Pacovan Ken' cultivars showed to be the most promising ones. 'Preciosa' can already substitute the commercial 'Prata' and 'Pacovan' cultivars without impairing their global acceptability, but 'Pacovan Ken' still needs to be improved regarding its appearance.

RESUMO

The Black Sigatoka Disease is devastating to traditional banana cultivars. In Brazil, resistant cultivars are being developed but if the consumer's preference is not taken into account, the breeding program may not succeed. In this research the acceptability of four resistant cultivars was accessed in the Northeastern Brazilian region and compared to four commercial varieties. Two groups of consumers participated: young adults and housewives. Hedonic scale was applied to external appearance of bunches, global acceptance and acceptance of fruits' attributes (appearance without peel, aroma, flavor and texture). Preference and purchase intent were also evaluated. Data were submitted to ANOVA and Preference Mapping. Women and young adults showed similar opinions. 'Preciosa' and 'Pacovan Ken' cultivars showed to be the most promising ones. 'Preciosa' can already substitute the commercial 'Prata' and 'Pacovan' cultivars without impairing their global acceptability, but 'Pacovan Ken' still needs to be improved regarding its appearance.

O Mal da Sigatoka Negra é devastador para as cultivares tradicionais de banana. No Brasil, cultivares resistentes estão sendo desenvolvidas, mas se a preferência do consumidor não for considerada, o programa de melhoramento pode falhar. Neste trabalho, a aceitabilidade de quatro cultivares resistentes foi acessada no Nordeste brasileiro e comparada a quatro variedades comerciais. Dois grupos de consumidores participaram: adultos jovens e donas de casa. Escala hedônica foi aplicada para aparência externa dos cachos, aceitação global e aceitação por atributos dos frutos (aparência sem a casca, aroma, sabor e textura), além de testes de preferência e intenção de compra. Os dados foram submetidos à ANOVA e Mapa de Preferência Interno. Mulheres e jovens mostraram opiniões semelhantes. As cultivares 'Preciosa' e 'Pacovan Ken' mostraram ser as mais promissoras, sendo que a primeira já pode substituir as cultivares comerciais 'Prata' e 'Pacovan' sem prejudicar a sua aceitabilidade, mas a 'Pacovan Ken' ainda precisa ser melhorada quanto à aparência.

RESUMO

The Black Sigatoka Disease is devastating to traditional banana cultivars. In Brazil, resistant cultivars are being developed but if the consumer's preference is not taken into account, the breeding program may not succeed. In this research the acceptability of four resistant cultivars was accessed in the Northeastern Brazilian region and compared to four commercial varieties. Two groups of consumers participated: young adults and housewives. Hedonic scale was applied to external appearance of bunches, global acceptance and acceptance of fruits' attributes (appearance without peel, aroma, flavor and texture). Preference and purchase intent were also evaluated. Data were submitted to ANOVA and Preference Mapping. Women and young adults showed similar opinions. 'Preciosa' and 'Pacovan Ken' cultivars showed to be the most promising ones. 'Preciosa' can already substitute the commercial 'Prata' and 'Pacovan' cultivars without impairing their global acceptability, but 'Pacovan Ken' still needs to be improved regarding its appearance.

O Mal da Sigatoka Negra é devastador para as cultivares tradicionais de banana. No Brasil, cultivares resistentes estão sendo desenvolvidas, mas se a preferência do consumidor não for considerada, o programa de melhoramento pode falhar. Neste trabalho, a aceitabilidade de quatro cultivares resistentes foi acessada no Nordeste brasileiro e comparada a quatro variedades comerciais. Dois grupos de consumidores participaram: adultos jovens e donas de casa. Escala hedônica foi aplicada para aparência externa dos cachos, aceitação global e aceitação por atributos dos frutos (aparência sem a casca, aroma, sabor e textura), além de testes de preferência e intenção de compra. Os dados foram submetidos à ANOVA e Mapa de Preferência Interno. Mulheres e jovens mostraram opiniões semelhantes. As cultivares 'Preciosa' e 'Pacovan Ken' mostraram ser as mais promissoras, sendo que a primeira já pode substituir as cultivares comerciais 'Prata' e 'Pacovan' sem prejudicar a sua aceitabilidade, mas a 'Pacovan Ken' ainda precisa ser melhorada quanto à aparência.

RESUMO

BACKGROUND: There is a considerable loss of volatile compounds during the thermal concentration of cashew apple juice, damaging product quality, and as yet there is little research on the subject. Thus the purpose of this research was to identify the aroma volatiles evaporated off from cashew apple juice and recovered in the water phase during concentration of this beverage in an industrial plant. Water phase volatiles were extracted using dichloromethane, concentrated under a nitrogen flow, separated by gas chromatography (GC) and identified by GC-mass spectrometry. In order to determine the contribution of each volatile to the cashew aroma, five trained judges evaluated the GC effluents using the Osme GC-olfactometry technique. RESULTS: 71 volatiles were identified; of these, 47 were odour active. Alcohols were preferentially recovered in the cashew water phase, notably heptanol, trans-3-hexen-1-ol and 3-methyl-1-butanol, representing 42% of the total chromatogram area and imparting green grass and fruity aroma notes to the water phase. Esters represented 21% of the total chromatogram area, especially ethyl 2-hydroxyhexanoate, ethyl trans-2-butenoate and ethyl 2-methylbutanoate, and were responsible for the fruity/cashew-like aroma of the water phase. On the other hand, 3-methylbutanoic and 2-methylbutanoic acids were the volatiles that presented the greatest odour impact in the GC effluents of the water phase. CONCLUSION: Overall, the results of the present study strongly indicated that further concentration of the esters recovered in the water phase, either by partial distillation or by alternative technologies such as pervaporation, could generate a higher-quality natural cashew apple essence.

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