Abstract:The samples of Potentilla anserine L. from seven different producing areas in Qinghai were used to study the differences, principal component analysis and quality comprehensive evaluation of nutritional components, providing a basis for the development and utilization of Qinghai Potentilla anserina L. as food raw material or product excipients. SPSS 19.0 was used to conduct principal component analysis and multiple comparative analysis of nutrients of Potentilla anserina L. from seven different producing areas in Qinghai, and the index components contributing greatly to the quality of Potentilla anserina L. were comprehensively evaluated. In addition, the differences of key nutrients between Potentilla anserina L. from Qinghai and other foods were compared and analyzed. The results showed that there were differences in the index nutrients among the samples, but with the characteristics of 'high protein, high dietary fiber, low fat, very low sodium, rich in amino acids and fatty acids, rich in nutrition and various mineral elements'. Compared with nutrients in other foods, it was found that the contents of dietary fiber, vitamin B2, vitamin C, Ca, K and Na in Potentilla anserina L. were high, while the contents of fat, starch and energy were low. The top three Potentilla anserina L. were from Nangqian county in Yushu tibetan autonomous prefecture, Guinan county in Hainan tibetan autonomous prefecture and Huangyuan county in Xining city. It was found that the differences of nutrient mass fraction in Potentilla anserina L. from varied producing areas in Qinghai were related to the local altitude, and was closely related to the climatic factors corresponding to different altitudes. It might also be related to the varieties, breeding, genetic improvement and ecological adaptability. This study indicated that Potentilla anserina L. from Qinghai had favorable nutritional value and development prospect, which could provide a basis for its quality control.
