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The study of special fruit apricots , grapes, pomegranates , walnuts , Elaeagnus, wolfberry , European plum , cherry plum , mulberry , black currant , quince raw materials , analysis and determination of the fruit content of procyanidins . Extraction conditions for optimal selection of Elaeagnus, cherry plum , medlar proanthocyanidins orthogonal experiment to extract the three fruit procyanidins suitable process conditions . Combination of the proanthocyanidins the active ingredient to evaluate the comprehensive utilization of Xinjiang specialty fruit . The main findings are as follows : 1 . Using hydrochloric acid - n-butanol molysite catalytic colorimetric determination of the fruit content of procyanidins , results showed that : most fruits contain proanthocyanidins components in the test material ; rich part of the fruit content of procyanidins content ( materials dry weight) between 6.644μg / g to 31.817μg / g ; little individual fruit procyanidin content or without trial were not detected . Proanthocyanidins from grape seeds with the highest concentration (material dry weight ) 31.817μg / g ; the Elaeagnus pulp procyanidin content , followed by , ( material dry weight ) 21.398μg / g . Different varieties of cherry plum , European plum , quince , mulberry , walnut or type procyanidin content was significantly different ; the different procyanidin content of the same species or different parts of the type of fruit . Orthogonal experiment investigated sieve diameter , extraction solvent , extraction time, solid-liquid ratio of factors to determine the angustifolia, cherry plum , medlar proanthocyanidins best extraction conditions . Elaeagnus whole fruit sifted through a 60 mesh sieve , and water as the extraction solvent extraction 5h, solid-liquid ratio of 1:8 ; cherry plum sifted through a 60 mesh sieve , water extraction solvent extraction 5h, solid to liquid ratio 1:5 ; wolfberry sifted through a 40 mesh sieve , water as the extraction solvent extraction 2h , solid-liquid ratio of 1:8 . 3 . research and statistical analysis of special fruit processing and utilization of special fruit procyanidins and fruit evaluation of comprehensive development and utilization . Xinjiang specialty fruit has huge development potential , especially fruit procyanidins more good development prospects of the high value-added products .
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