Analysis and evaluation of fresh and air-dried hairtail muscle quality and nutritional components

  • LIAO Yueqin ,
  • WU Yingru ,
  • DU Qi ,
  • LIN Huimin ,
  • ZHANG Bin ,
  • DENG Shanggui ,
  • ZHOU Xiaomin
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  • 1(College of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China)
    2(Zhejiang Industrial Group Co.Ltd., Zhoushan 316022, China)

Received date: 2021-09-30

  Revised date: 2021-11-29

  Online published: 2023-02-14

Abstract

To study the changes of nutrients before and after air-drying of East China Sea hairtail, biochemical analysis methods and simulation experiments were used to determine and analyze conventional muscle nutrients, texture characteristics, protein digestibility, amino acids, and fatty acids, and provide a scientific basis for the nutritional evaluation of hairtail. Results showed that at the end of air-drying, the water content of hairtail was reduced by 14.25%, crude protein, crude fat, and crude ash increased by 0.80%, 13.23%, and 0.29%, respectively, and elasticity and digestibility were significantly improved (P<0.05). Twenty kinds of common amino acids and trace taurine were detected in hairtail before and after air-drying, and the amino acid content of air-dried hairtail was relatively high. According to the amino acid score, tryptophan was the first limiting amino acid in fresh and air-dried hairtail, and valine and sulfur-containing acids were the second limiting amino acids of fresh and air-dried hairtail, respectively. In the chemical score, tryptophan and thioacid were the first and second restrictive amino acids of fresh and air-dried hairtail. The essential amino acid index values were 0.87 and 0.91, respectively. There were obvious differences in fatty acid content in hairtail before and after air-drying, and the content of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) in air-dried hairtail was higher than that of fresh hairtail. In summary, air-dried hairtail is a processed fish product with high protein, easy digestion, and a better taste.

Cite this article

LIAO Yueqin , WU Yingru , DU Qi , LIN Huimin , ZHANG Bin , DENG Shanggui , ZHOU Xiaomin . Analysis and evaluation of fresh and air-dried hairtail muscle quality and nutritional components[J]. Food and Fermentation Industries, 2023 , 49(1) : 185 -191 . DOI: 10.13995/j.cnki.11-1802/ts.029576

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