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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (33): 147-155.doi: 10.11924/j.issn.1000-6850.casb2022-1005

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Nutritional Value of Native Fishes in the Shule River

ZHAO Zhongmeng1(), ZHAO Han1, WANG Xiongyan2, KE Hongyu1, ZHANG Lu1, HUANG Zhipeng1, DUAN Yuanliang1, LI Huadong1, WU Lixiao3, LI Qiang1()   

  1. 1 Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu 611730
    2 Sichuan Water Conservancy vocational College, Chongzhou, Sichuan 611231
    3 Agriculture and Rural Bureau of Linshui County, Guangan, Sichuan 638500
  • Received:2022-12-05 Revised:2023-04-05 Online:2023-11-25 Published:2023-11-22

Abstract:

Shule River is one of the important inland rivers in Gansu Province. In order to develop the edible value of native fishes in Shule River, a comparative study was conducted on nutritional components, amino acid content, fatty acid content and nutritional quality of muscle in Gymnocypris chilianensis, Triplophysa (Hedinichthys) yarkandensis and Schizopygopsis pylzovi, and the muscle nutritional quality of G. chilianensis was compared with other fishes of Gymnocypris. The results showed that the contents of moisture, crude ash, crude protein and crude fat in muscle of the three native fishes were different. The types and quantities of amino acids were consistent, the total amount of amino acids, essential amino acids, flavor amino acids, and nonessential amino acids in S. pylzovi muscle were higher than that of G. chilianensis and T. yarkandensis. According to the amino acid and chemistry score, the first limiting amino acid in all muscle samples was valine. All three species of native fish were rich in fatty acids, the contents of saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids in S. pylzovi muscle were significantly higher than that of G. chilianensis and T. yarkandensis (P<0.05). The comparison of muscle nutritional quality between G. chilianensis and other fishes of Gymnocypris showed that there were differences in general nutrients among the muscles, the types and quantities of amino acids of the three species of Gymnocypris were the same. The content of essential amino acids was the highest in the muscles of G. chilianensis, and more kinds of fatty acids were detected in the muscles of G. chilianensis. The results showed that the muscle of the three native fishes in Shule River was delicious, and they had higher edible value and nutritional value. G. chilianensis has the same nutritional value as G. eckloni and G. przewalskii, which has higher development value.

Key words: Shule river, native fishes, nutritional ingredient, comparative study