Comparative Analysis of Nutritional Ingredient of Goji Berries with Different Fruit Colors in Qaidam Area

Taking dried fruits dried in the sun as a reference,the nutrient components and active components of Lycium barbarum,Lycium ruthenicum Murr.,golden Chinese wolfberry,yellow fruit wolfberry,white Chinese wolfberry and purple Chinese wolfberry found in the Qaidam Basin were determined. The utilization value of 6 species of Chinese wolfberry was analyzed and evaluated,and the intrinsic quality was evaluated by principal component analysis and cluster analysis. The results showed that golden fruit wolfberry has a certain advantage in total sugar content,and its total sugar content is higher than other 5 kinds of wolfberry. The total sugar content of yellow fruit wolfberry is lower than that of Lycium barbarum,while the content of total flavonoids was 5 times that of Lycium barbarum and 2 times that of Lycium ruthenicum Murr. They show the characteristics of low total sugar and high flavonoids,so yellow Chinese wolfberry has a certain development value.White Chinese wolfberry has the highest protein content and purple Chinese wolfberry has the highest fat content,which has certain nutritional value. The principal component analysis selected the first three principal components,the cumulative variance contribution rate was 79.995%,and the top three comprehensive scores were red Chinese wolfberry,purple Chinese wolfberry and Lycium ruthenicum Murr.,indicating that these three types of wolfberry have higher comprehensive quality. The 6 different fruit colors of Chinese wolfberry were divided into 3 categories by cluster analysis classified method. The first category included Lycium ruthenicum Murr.and purple Chinese wolfberry with higher content of polysaccharides,fats,and anthocyanins,and the second category included white Chinese wolfberry has higher content of protein,the third category includedgolden fruit wolfberry,yellow fruit wolfberry,Lycium barbarum. The contents of total sugar,total flavonoids and betaine are relatively high. Chinese wolfberry with high nutrient content can be used as a special material in the future selection of wolfberry varieties.