Role of polyphenols in antioxidant capacity of napiergrass from different growing seasons

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Role of polyphenols in antioxidant capacity of napiergrass from different growing seasons
出版類型SCI(Sciences Citation Index)
出版年度2008
AuthorsPI-JEN TSAI, 蔡碧仁
開始頁27
頁數5
出版日期2008 / 1
其他編號0000
中文摘要

Napiergrass, used in Taiwan as a new organic nourishment, showed fluctuating antioxidant capacities under different growth conditions.
An index for selection of best quality material is therefore needed. Since polyphenols made the highest contribution to their antioxidant
capacity, the individual effects of plant parts, growing seasons, and growth periods on both polyphenols and antioxidant
activities were studied, using two varieties of napiergrass (purple, NBM and green, TLG2). Results demonstrated that leaves of
NBM had a higher antioxidant capacity than their stems and all parts of the green varieties. Classification of napiergrass according
to polyphenols revealed the effects of varieties and seasons on the anthocyanins and their close relationship to antioxidant capacity. Discriminant
analysis confirmed that anthocyanins are the most effective component in classifying napiergrass. Therefore, red colour of
anthocyanin might be used as a good index for the physiological activity of napiergrass.

期刊名稱Food Chemistry
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