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자료유형
학술저널
저자정보
Kang, Bou-Hee (Department of Chemistry and Food Science, Framingham State University) Racicot, Kenneth (US Army Natick Soldier Research Engineering Center) Pilkenton, Sarah J. (Department of Chemistry and Food Science, Framingham State University) Kwon, Young-In (Department of Food and Nutrition, Hannam University) Apostolidis, Emmanouil (Department of Chemistry and Food Science, Framingham State University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제58권 제1호
발행연도
2015.1
수록면
127 - 136 (10page)

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This study investigates the carbohydrate-hydrolyzing inhibitory potential of blueberry extract on carbohydrate-hydrolyzing enzymes and evaluates if the inhibitory activity is proanthocyanidin (PAC) or lower molecular weight phenolic dependent. Freeze-dried blueberry powder was extracted using acetone and subjected to $C_{18}$ extraction (BAE). Low-molecular weight phenolics (BAE-LMW) and PACs (BAE-PAC) were separated from BAE with gel filtration chromatography using LH-20 column. Total phenolic content, PAC content, and phenolic profiles using HPLC, as well as rat ${\alpha}$-glucosidase, sucrase, and maltase inhibitory activities, were determined for all samples. The rat alpha-glucosidase inhibitory activity of BAE ($IC_{50}$ 0.390 mg/mL TP basis) was enhanced in BAE-LMW ($IC_{50}$ 0.242 mg/mL TP basis) and reduced in BAE-PAC (I$IC_{50}$ 0.915 mg/mL TP basis). Similar trends were observed with maltase and sucrase inhibitory activities. Our findings suggest that blueberry acetone extract has inhibitory activity on carbohydrate-hydrolyzing enzymes and this effect is dependent on LMWs rather than PAC.

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