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Enzymatic synthesis and characterization of maltoheptaose-based sugar esters.
Nguyen, Phu Cuong; Nguyen, My Tuyen Thi; Lee, Chang-Kyu; Oh, Il-Nam; Kim, Jae-Han; Hong, Soon-Taek; Park, Jong-Tae.
Afiliación
  • Nguyen PC; Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea.
  • Nguyen MTT; Department of Food Nutrition, Chungnam National University, Daejeon 34134, Republic of Korea.
  • Lee CK; CARBOEXPERT Inc., Daejeon 34134, Republic of Korea.
  • Oh IN; Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea.
  • Kim JH; Department of Food Nutrition, Chungnam National University, Daejeon 34134, Republic of Korea.
  • Hong ST; Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea.
  • Park JT; Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea; CARBOEXPERT Inc., Daejeon 34134, Republic of Korea. Electronic address: jtpark@cnu.ac.kr.
Carbohydr Polym ; 218: 126-135, 2019 Aug 15.
Article en En | MEDLINE | ID: mdl-31221313
In this study, maltoheptaose (G7)-based sugar esters were synthesized from maltoheptaose and fatty acids (C10-C16) using a commercial lipase. With the exception of dimethyl sulfoxide (DMSO; 76.4%, w/v), G7 showed only limited solubility in organic solvents. Among the fatty acids, palmitic acid (PA) was the best substrate for G7-based ester formation. G7-PA ester was successfully synthesized as the monoester structure exclusively in 10% DMSO of t-butanol with a 22% conversion yield. NMR and enzymatic analyses of the purified monoester product revealed that the ester bond in the G7 was located at C-6 of the glucose at the reducing end. The G7-PA monoester showed the melting temperature at 56.3 °C that was 6.5 °C lower than that of the free PA and exhibited a different endothermic pattern from the free G7. The G7-PA monoester exhibited excellent emulsifier potential with more even droplet size distribution compared with the commercial sucrose esters for an oil-in-water emulsion system.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas Fúngicas / Hidrolasas de Éster Carboxílico / Ésteres / Glucanos Idioma: En Revista: Carbohydr Polym Año: 2019 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas Fúngicas / Hidrolasas de Éster Carboxílico / Ésteres / Glucanos Idioma: En Revista: Carbohydr Polym Año: 2019 Tipo del documento: Article Pais de publicación: Reino Unido