Objective To compare the differences in nutritional components of six main varieties of table grapes in China. Methods The amino acid and other nutrients of grapes were determined by physical and chemical analysis methods, and the nutritional differences between varieties were compared and analyzed by statistical methods. Results The differences of contents of fatty, ash, fiber, total acid, cysteine, glycine, and phosphorus in six kinds of table grapes were not significant (P>0.05). The content of protein, total sugar, reducing sugar, total anthocyanins, vitamin C, essential amino acid, flavoring amino acid, branched chain amino acid, medical amino acid, flavoring and coloring amino acid, primary amine amino acid, K, Fe, and Cu in Summer Black grape were all highest. The contents of total flavonoids, total polyphenols, Ca, Mg, and Mn in Muscat Kyoho grape were all highest. Red globe grape had the highest amino acid ratio coefficient score and P content, and the amino acid nutritional balance was best. Conclusion Different varieties of table grapes have obvious nutritional differences and different potential development and application value. |