Tocopherol and tocotrienol contents of different varieties of rice in Malaysia.
J Sci Food Agric
; 95(4): 672-8, 2015 Mar 15.
Article
en En
| MEDLINE
| ID: mdl-24841131
BACKGROUND: The present study examined the contents of tocopherols and tocotrienols and their distribution in 58 different varieties of whole rice cultivated in Malaysia. The analytical method used was saponification of samples followed by dispersive liquid-liquid microextraction and reverse phase high-performance liquid chromatography. RESULTS: The total vitamin E contents of different varieties of whole rice ranged between 19.36 and 63.29 mg kg⻹. Contents of vitamin E isomers varied among rice varieties both within and between grain color groups. Black-pigmented rice showed significantly higher mean contents of α-tocopherol, ß-tocopherol and α-tocotrienol than non-pigmented rice and red-pigmented rice. Red-pigmented rice had significantly lower mean contents of γ-tocotrienol and total vitamin E than non-pigmented rice. The mean contents of δ-tocotrienol and total vitamin E in non-pigmented rice, however, were similar to those in black-pigmented rice. γ-Tocotrienol was the predominant form of vitamin E isomer in all analyzed varieties. The Pearson correlations among vitamin E isomers and total vitamin E content of whole rice were also studied. CONCLUSION: This study provides information on vitamin E content of different rice varieties that would be beneficial for decision making in genetic breeding of bioactive compound-rich rice varieties.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oryza
/
Semillas
/
Productos Agrícolas
/
Tocoferoles
/
Tocotrienoles
Tipo de estudio:
Prognostic_studies
Límite:
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Sci Food Agric
Año:
2015
Tipo del documento:
Article
País de afiliación:
Malasia
Pais de publicación:
Reino Unido