It is believed that the antioxidant properties of kiwi, despite a low content of phenolic compounds (especially flavonoids) are largely the result of the high concentrations of b-carotene,a-tocopherol, and ascorbic acid present in these products. It has been shown that concentration of ascorbic acid in plasma is greatly increased over 4.5 h after ingestion of kiwi fruit (300 g) and maintained at a high level. Similarly, high levels of this antioxidant in plasma were observed after consumption of strawberries (280 g) (Fig. 7). However, the observations of different authors are not consistent in this regard, and in the opinion of some an increase in total plasma antioxidant capacity after consumption of kiwi is not only the result of a high concentration of ascorbic acid, b-carotene, and a-tocopherol in these fruits, but may be an effect of antioxidants not yet known about.
It is believed that the antioxidant properties of kiwi, despite a low content of phenolic compounds (especially flavonoids) are largely the result of the high concentrations of b-carotene,a-tocopherol, and ascorbic acid present in these products. It has been shown that concentration of ascorbic acid in plasma is greatly increased over 4.5 h after ingestion of kiwi fruit (300 g) and maintained at a high level. Similarly, high levels of this antioxidant in plasma were observed after consumption of strawberries (280 g) (Fig. 7). However, the observations of different authors are not consistent in this regard, and in the opinion of some an increase in total plasma antioxidant capacity after consumption of kiwi is not only the result of a high concentration of ascorbic acid, b-carotene, and a-tocopherol in these fruits, but may be an effect of antioxidants not yet known about.
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It is believed that the antioxidant properties of kiwi, despite a low content of phenolic compounds (especially flavonoids) are largely the result of the high concentrations of b-carotene,a-tocopherol, and ascorbic acid present in these products. It has been shown that concentration of ascorbic acid in plasma is greatly increased over 4.5 h after ingestion of kiwi fruit (300 g) and maintained at a high level. Similarly, high levels of this antioxidant in plasma were observed after consumption of strawberries (280 g) (Fig. 7). However, the observations of different authors are not consistent in this regard, and in the opinion of some an increase in total plasma antioxidant capacity after consumption of kiwi is not only the result of a high concentration of ascorbic acid, b-carotene, and a-tocopherol in these fruits, but may be an effect of antioxidants not yet known about.
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