Abstract: In order to effectively evaluate the nutritional quality of Prunus salicina Lindl. cv ‘Shazi Kongxinli’ fruit in the future, this research selected six samples of the fruit(NO. Kxl-1- Kxl-6)as the experimental materials, tested nutritional components, bioactive components and amino acid components, and evaluated the amino acid components, and comprehensively evaluated the nutritional quality of the fruit based on the principal component analysis. The results showed that the soluble solids content of Prunus salicina Lindl. cv ‘Shazi Kongxinli’ fruit were 12.49%-13.25%, soluble sugar 6.15%-10.98%, titratable acid 2.06%-3.90%, soluble protein was 66-85 mg/100g, and vitamin C 1.15-1.76 mg/100g, flavonoids 1.15-1.44 mg/100g and total phenols 0.53-0.77 mg/100g, the total amount of each amino acid was 0.521-1.533 g/100g; seven essential amino acids were detected, and the proportion of total amino acids was 16.40%-24.7%. There were three main components that could reflect the physical and chemical properties of Prunus salicina Lindl. cv ‘Shazi Kongxinli’ fruit, with a cumulative contribution rate of 87.105%. The first main component was soluble protein, vitamin C, total phenol, and flavonoids. The second main component was total amino acids content and soluble solids content. The third principal component was soluble sugar and titratable acid. The fruit quality was comprehensively evaluated and sorted. The comprehensive scores of Kxl-1 and Kxl-2 were> 0.7, and the quality was better.
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