부추의 ascorbic acid 함량 및 항산화 활성
Contents of Ascorbic Acid and Antioxidative Activities on Allium Tuberosum
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초록
Allium tuberosum is a perennial herb of which leaves are used for food. In this study, on preparing powder of leeks, we measured contents of ascorbic acid, chlorophyll, and total polyphenol, effective components which are contained in the leek. Simultaneously, we also did capability of removal for DPPH radical and antioxidant activity through FTC and TBA methods. The content of ascorbic acid was very different before and after drying. Before drying,that is 3.54±0.59 mg / 100 g. f.w., but 3.17±0.10 mg / 100 g. d.w. after drying. The chlorophyll was 5.91±3.97 / 100g f.w. in the raw leek, however, 1064.69 / 100g f.w.in the powder of it. Taken together, it suggests that relatively small amount of leek powder is more powerful to produce deep and vivid green color than raw ones. The total content of polyphenol was 60.29±1.20 mg / 100g f.w in the raw leek and 1076.79±6.00 mg / 100g d.w in the powder. When we compared the results methods of DPPH, FTC and TBA, we found that the more it contained total polyphenol, the more antioxidant activity was effective.
Abstract
Allium tuberosum is a perennial herb of which leaves are used for food. In this study, on preparing powder of leeks, we measured contents of ascorbic acid, chlorophyll, and total polyphenol, effective components which are contained in the leek. Simultaneously, we also did capability of removal for DPPH radical and antioxidant activity through FTC and TBA methods. The content of ascorbic acid was very different before and after drying. Before drying,that is 3.54±0.59 mg / 100 g. f.w., but 3.17±0.10 mg / 100 g. d.w. after drying. The chlorophyll was 5.91±3.97 / 100g f.w. in the raw leek, however, 1064.69 / 100g f.w.in the powder of it. Taken together, it suggests that relatively small amount of leek powder is more powerful to produce deep and vivid green color than raw ones. The total content of polyphenol was 60.29±1.20 mg / 100g f.w in the raw leek and 1076.79±6.00 mg / 100g d.w in the powder. When we compared the results methods of DPPH, FTC and TBA, we found that the more it contained total polyphenol, the more antioxidant activity was effective.
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