›› 2020, Vol. 32 ›› Issue (7): 1263-1273.DOI: 10.3969/j.issn.1004-1524.2020.07.15

• Foods Science • Previous Articles     Next Articles

Effect of food improvers on quality characteristics of dried Engraulis japonicas

GU Saiqi1,2,3, WANG Suning2,3, BAO Rongbin1,2,3, HU Binchao1,2,3, YANG Xiaoxia1,2,3, ZHANG Jilei2,3, CHEN Jingying4, LIN Zhaoyong5, DING Yuting1,2,3, KE Zhigang2,3,*   

  1. 1. Ninghai-Zhejiang University of Technology Academy of Science & Technology, Ninghai 315601, China;
    2. Ocean College, Zhejiang University of Technology, Hangzhou 310014, China;
    3. National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, China;
    4. Rui'an Huasheng Aquatic Products Co., Ltd., Rui'an 325200, China;
    5. Yuhuan Donghai Yucang Modern Fishery Co., Ltd., Yuhuan 317602, China
  • Received:2019-11-28 Online:2020-07-25 Published:2020-07-28

Abstract: This study investigated the effects of tea polyphenol (TP), ascorbyl palmitate (AP), glycerol monolaurate-soy protein isolate (GML-SPI) on the quality characteristics of dried Engraulis japonicas, and the indicators including moisture, water activity, total bacterial count (TBC), total volatile basic nitrogen (TVB-N), lipid oxidation indexes, color difference, muscle fiber structure, volatile flavor components as well as sensory evaluation were analyzed. The results showed that none of the three food improvers significantly affected the moisture and water activity of dried Engraulis japonicas. TP and AP could inhibit the growth of TBC and decrease the production of TVB-N, while GML-SPI had the opposite effect. The three food improvers could effectively delay the rate of lipid oxidation, control the degree of color change, and protect the structural integrity of muscle fibers, of which TP was the best. A total of 25 volatile compounds, which could be divided into 5 classes, were identified in dried Engraulis japonicas, among which 5 odor-active-compounds including 3-methylbutanal were further selected. Compared with the control group, the total concentrations and odor activity value (OAV) summation of the volatiles in dried Engraulis japonicas treated by three improvers decreased significantly, among which TP group decreased the most. According to the total sensory score, TP group ranked the highest, AP group the second, GML-SPI group the third. In conclusion, it was determined that 0.03% tea polyphenol solution had the best quality improvement effect on the dried Engraulis japonicas.

Key words: Engraulis japonicas, food improver, quality, flavor

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