Ginkgo seeds are distinguished as source of highly promising food and traditional Chinese herbal for thousands of years. It is well known for the significant curative effects on some diseases, such as cough and asthma. The current work aimed to study the proximate composition, phytochemical content, and antioxidant capacity of ginkgo seeds fermented by 17 varieties of rice wine starters. Solid state fermentation was used to improve the nutrition of ginkgo seeds. Correlation analysis showed that there was a significant correlation between the flavonoids, approximate composition, and antioxidant activity in fermented ginkgo seeds. Through principal component analysis (PCA), Yp rice wine starter was found as the most suitable for ginkgo seeds fermentation. After fermentation of Yp rice wine starter, the content of quercetin increased by 188.1%, the content of reducing sugars and peptides increased by 16 and 24 times, respectively, and the scavenging ability of 1,1-diphenyl-2-picrylhydrazyl free radicals increased from 4.69 to 12.43 mg TE/g. The solid-state fermentation of ginkgo seeds could be efficiently applied to food industrial production, and fermentation significantly increased the antioxidant activity and flavonoid content of ginkgo seeds, as well as improved their nutrition.
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