Insight into the correlation of key taste substances and key volatile substances from shrimp heads at different temperatures

Food Chem. 2024 Aug 30:450:139150. doi: 10.1016/j.foodchem.2024.139150. Epub 2024 Mar 27.

Abstract

This study aimed to investigate taste substances of shrimp heads stored at 20 °C, 4 °C, -3 °C, and - 18 °C, and the correlation between taste substances and 25 key volatile substances. Notably, samples stored at 20 °C showed significant changes in bitter amino acids and hypoxanthine, and quickly deteriorated. Samples stored at 4 °C for 14 d or - 3 °C for 30 d facilitated the development of umami amino acids, sweet amino acids, and IMP. Furthermore, samples stored at -18 °C for 30 d demonstrated no significant changes in taste profile. Changes in taste substances through quantitative analysis were consistent with changes in taste profile through e-tongue analysis. Based on the results of O2PLS (VIP > 1), Cys, Arg, Glu, Ser, Val, Ala, Ile, ADP, and IMP were correlated with 25 key volatile substances. This study provides fundamental data for the storage, transportation, and value-added utilization of shrimp heads.

Keywords: E-tongue; Shrimp heads; Taste substances; Variable importance.

MeSH terms

  • Amino Acids* / analysis
  • Amino Acids* / chemistry
  • Animals
  • Food Storage
  • Penaeidae* / chemistry
  • Shellfish* / analysis
  • Taste*
  • Temperature*
  • Volatile Organic Compounds* / chemistry

Substances

  • Volatile Organic Compounds
  • Amino Acids