Policosanol and other bioactive compounds in different Thai rice varieties
Issued Date
2024-02-01
Resource Type
ISSN
08891575
Scopus ID
2-s2.0-85179110915
Journal Title
Journal of Food Composition and Analysis
Volume
126
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Food Composition and Analysis Vol.126 (2024)
Suggested Citation
Siripattanakulkajorn C., Sombutsuwan P., Nakornsadet A., Chumsantea S., Lilitchan S., Krisnangkura K., Aryusuk K. Policosanol and other bioactive compounds in different Thai rice varieties. Journal of Food Composition and Analysis Vol.126 (2024). doi:10.1016/j.jfca.2023.105891 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/95629
Title
Policosanol and other bioactive compounds in different Thai rice varieties
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Abstract
This study examines the total lipid, policosanol (PC), tocols, and γ-oryzanol contents, and fatty acid composition in rice bran (RB) obtained from 4 min-polished brown rice of 13 Thai rice varieties, with a new emphasis on the PC content and composition. The total PC content in the oil extracted from RB ranged from 2776 to 7274 μg/g. Sungyod rice had the highest total PC content at 7274 μg/g, followed closely by Niaw Dum Mor at 6407 μg/g, and RD10 at 6308 μg/g. The bran of Thai rice varieties contained triacontanol, dotriacontanol, and tetratriacontanol as their main components. Sungyod rice had significantly more octacosanol. Considering the PC composition, black-pigmented glutinous rice varieties, Leum Pua and Niaw Dum Mor, had higher hexatriacontanol and octatriacontanol levels. The total lipids in rice bran (RB) ranged from 14.9 to 22.1 g/100 g. The key fatty acids found in the Thai rice varieties included oleic acid (37.8–43.0%), linoleic acid (30.3–36.4%), and palmitic acid (14.2–21.6%). In terms of other bioactive compounds, Leum Pua had the highest tocols level at 635 μg/g RB, while Pathum Thani 1 showed an impressive γ-oryzanol level of 4011 μg/g RB. These findings suggest that certain Thai rice varieties have the potential to be rich sources of lipids, PC, and bioactive compounds.