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| Analysis of nutritional components in kernels and polyphenols in coat of three colored Juglans sigillata in Yunnan |
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| DOI： |
| KeyWord:colored Juglans sigillata nutritional component mineral element fatty acid polyphenols |
| FundProject:国家重点研发计划（2020YFD1000703） |
| Author Name | Affiliation | | YUAN Jiangjuan1, HAO Jiabo2, LIU Yun1, FENG Qian2, KAN Huan1, LU Bin2 | 1.College of Life Sciences, Southwest Forestry University, Kunming 650224, China
2.Yunnan Academy of Forestry and Grassland, Kunming 650204, China |
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| Abstract: |
| In order to promote the variety breeding and the deep processing products research of walnut varieties in Yunnan, the content of basic nutrients, mineral elements, fatty acids composition in the kernels and polyphenols in kernel coat of three colored Juglans sigillata Niangqing, Xuanhong and Zijin in Yunnan were determined. The results showed that the contents of fat, carbohydrate and protein in three colored Juglans sigillata were 58.2-59.6, 18.9-19.9 g/100 g and 15.4-16.4 g/100 g, respectively. Two kinds of vitamins were detected, among which the content of vitamin C was the highest in Niangqing(17.9 mg/100 g), and the content of vitamin E was the highest in Xuanhong(19.2 mg/100 g). Among the six mineral elements detected, the content of the macroelement Ca and the trace element Fe were the highest in Zijin, which were 8 718.6 μg/g and 224.6 μg/g, respectively. A total of 21 fatty acids were detected in the kernels of three colored Juglans sigillata, 11 of which were unsaturated fatty acids, mainly linoleic acid. The linolenic acid content in Zijing was the highest (67.49%). Seven kinds of polyphenols were detected in the three colored Juglans sigillata kernel coats. In terms of the content of seven polyphenols, Zijin was the highest, followed by Xuanhong, and Niangqing was the lowest. In conclusion, the kernels of the three colored Juglans sigillata in Yunnan are rich in nutritional components and have high development value. |
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