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Flavor profile of dried shrimp at different processing stages

文献类型： 外文期刊

作者： Hu, Mengyue 1 ; Wang, Shanyu 2 ; Liu, Qi 2 ; Cao, Rong 2 ; Xue, Yong 1 ;

作者机构： 1.Ocean Univ China, Coll Food Sci & Technol, Qingdao 266003, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Shandong, Peoples R China

3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao 266237, Peoples R China

关键词： Dried shrimp; GC-IMS; Flavor fingerprint; GC-MS; Aroma-active compounds

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：4.952； 五年影响因子：5.383 ）

ISSN： 0023-6438

年卷期： 2021 年 146 卷

页码：

收录情况： SCI

摘要： Dried shrimp is one of the most widely consumed aquatic products, with a pleasant flavor profile. The flavor profiles of shrimp samples at different process stages (raw, boiled, dried for 2 h, and dried for 4 h) was obtained using the electronic nose (e-nose), gas chromatography (GC)-ion mobility spectrometry (GC-IMS), and GC-mass spectrometry (GC-MS) combined with solid-phase microextraction. The odor activity value (OAV) was calculated to determine aroma-active compounds. According to the PCA scoring plot of e-nose, the aroma profiles of boiled and dried shrimp were similar, except for that of raw shrimp. GC-IMS could efficiently distinguish shrimp samples and establish a flavor fingerprint for dried shrimp. Quantity analysis findings showed that boiling significantly enhanced the total content of volatile compounds from 193.62 ng/g to 387.65 ng/g in shrimp. In boiled shrimp, 1-octene-3-ol, octanal, and hexanal were identified as aroma-active compounds. Trimethylamine and pyrazines were mainly produced during the drying period, and pyrazines considerably increased by 47.16 ng/g in the later drying period. 2-Ethyl-5-methyl-pyrazine, octanal, trimethylamine, 1-octene-3-ol, and hexanal majorly contributed to the flavor of dried shrimp. These results indicate that the boiling and later drying periods are vital stages for enhancing flavor quality.

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