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Lycium fruits (Lycium barbarum, Lycium chinense) are mainly cultivated and distributed in Northwest China. The fruits and root bark have been used in Chinese traditional medicine for centuries. In this study, Lycium dry fruit extracts from the main cultivation areas in China together with a sample from Nepal were subjected to a comparative metabolic profiling, including total carbohydrate content, total phenolic content, vitamin C content, carotenoid content, and mineral contents. Results showed that there was a slight difference in contents of nutrients and phytochemicals among samples from different areas. The total carbohydrate content was higher in the sample from Guazhou, Gansu province (69.47%), with an average value of total carbohydrate content of 61.59%, while the highest total phenolic content value was 14.13 mgGAE/g from Nepal. Data concerning vitamin C content ranged between 33.15 and 113.8 mg/100 g, with an average value of 55.29 mg/100 g. Zeaxanthin dipalmitate content in Lycium dry fruits ranged from 419.34 to 1008.90 μg/g among the different samples, with the highest content (1008.90 μg/g) observed in Tianjing. It appeared that we could not clearly differentiate Lycium samples in terms of their metabolic and mineral profile. The quantitative difference observed among samples might be linked to soil composition and environmental aspect of the harvest place. Our results were somehow in the same range as those reported in the literature. Therefore, Lycium fruits could be used as a dietary source of natural function foods and be worthy of development and utilization.

journal of food quality

Comparative Metabolic Profiling of Lycium Fruits (Lycium barbarum and Lycium chinense) from Different Areas in China and from Nepal