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Objective To investigate the differences in amino acid content and nutritional value of Elaeagnus angustifolia from different regions in Xinjiang. Methods The amino acid content in the pulp of 18 Elaeagnus angustifolia samples from 9 different counties in Xinjiang were evaluated by automatic amino acid analyzer at wavelengths of 570 nm and 440 nm by post-column derivative ion exchange chromatography, and by comparing with Food and Agriculture Organization of the United Nations/World Health Organization (FAO/WHO) amino acid pattern spectrum and ideal protein standard, the amino acid ratio (RAA), ratio coefficient of amino acid (RC) and score of ratio coefficient (SRC) were calculated. The nutritional value of amino acids in the pulp of Elaeagnus angustifolia was evaluated. Results There were 17 kinds of amino acids in the pulp of 18 Elaeagnus angustifolia samples. The essential amino acids accounted for 13.87%-21.96%, and the pharmacodynamic amino acids accounted for 73.03%-80.21%. The amino acid composition of Elaeagnus angustifolia were quite different among regions, and the content of total amino acids, essential amino acids and pharmacodynamic amino acids were all the highest in Qira Country, with values of 3.69, 2.73, and 0.81 g/100 g, respectively. According to the comparison of FAO/WHO amino acid pattern spectrum and whole egg reference standard, Elaeagnus angustifolia in Yen gisar County had the highest SRC of 66.92% and 72.27%, respectively. Conclusion As a plant-based food source, Elaeagnus angustifolia pulp is rich in amino acids and has high medicinal value. The amino acid content of them sold in different regions of Xinjiang is different, so the subsequent study can further explore the breeding and processing of the dominant varieties of Elaeagnus angustifolia.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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