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Red Earth (Red Globe), Seedless ( Thompson Seedless ) , Victoria (Victoria), August ( August ) 4 table grape varieties as test materials, the production of grapes enlargement treatment . In different stages of fruit growth stage sampling , determination of the basic physical and chemical indicators of activity, polyphenols and antioxidant activity , dietary fiber components , research enlargement processing of four kinds of table grape fruit physical and chemical , biochemical and nutritional characteristics impact , and DPS software for data analysis , the main results are as follows: ( 1) enlargement treatment makes the red Earth berry weight increased by 18% , at the same time make fruit fruit shape index larger , fruit pressure resistance decreases , with reduce the amount of sugar elevated acid content , sugar-acid ratio reduce fruit SOD, POD, PPO activity had no significant effect . Enlargement treatment can increase fruit polyphenol content and enhance its antioxidant activity , fruit can TDF , IDF content increased , decreased TP and HC had no significant effect on the SDF . ( 2) enlargement process allows non-nuclear ginkgo grain weight increased by 37% , at the same time to make fruit fruit shape index decreases , a significant increase in fruit pressure resistance , reduce the sugar content , elevated acid content , sugar-acid ratio decreased , SOD reduce the activity of POD and PPO activity increases . Enlargement treatment can reduce the polyphenol content of fruit and weakened its antioxidant activity , the fruit can increase the dietary fiber content . ( 3) enlargement process allows Victoria berry weight increased by 9 % larger at the same time make fruit fruit shape index , fruit pressure resistance increased significantly , reducing sugar content , elevated acid content , sugar acid ratio decreased , SOD and reduced activity of PPO , POD activity increased . Enlargement treatment can reduce the polyphenol content of fruit and weakened the reducing power of the copper ions , potassium ferricyanide reducing power , DPPH · scavenging to make metal chelating force , hydroxyl radical scavenging enhanced . Enlargement treatment can increase the dietary fiber content of the fruit . (4 ) enlargement process allows Auguste berry weight increased by 18 % , and at the same time make fruit fruit shape index larger , fruit pressure resistance is significantly reduced , the increase in sugar content , elevated acid content , sugar acid ratio reduce PPO activity increases , but had no significant effect on SOD and POD activity . Enlargement can increase the polyphenol content of fruit processing and enhance its antioxidant activity , reducing dietary fiber content of the fruit can be .
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