| Title: | Similarity of aroma attributes in hot-air-dried shrimp (Penaeus vannamei) and its different parts using sensory analysis and GC-MS |
| Author(s): | Zhang D; Ji H; Liu S; Gao J; |
| Address: | "College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, PR China. College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, PR China; Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang 524088, PR China; Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang 524088, PR China; Guangdong Provincial Engineering Technology Research Center of Marine Food, Zhanjiang 524088, PR China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, PR China. Electronic address: jihw62318@163.com. College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, PR China; Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang 524088, PR China; Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang 524088, PR China; Guangdong Provincial Engineering Technology Research Center of Marine Food, Zhanjiang 524088, PR China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, PR China" |
| DOI: | 10.1016/j.foodres.2020.109517 |
| ISSN/ISBN: | 1873-7145 (Electronic) 0963-9969 (Linking) |
| Abstract: | "The objective of the study was to determine the similarities of aroma attributes in hot-air-dried whole shrimp (HDWS) and its different parts using sensory analysis and gas chromatography-mass spectrometry (GC-MS). In this study, eight samples of different parts of shrimp were compared with its whole. Characteristic volatile compounds based on odor activity value (OAV) were selected, and a cluster analysis (CA) method was used to determine the similarities of aroma profiles between the whole and parts. The potential correlations among sensory attributes and volatile compounds were analyzed by analysis of partial-least-squares regression (PLSR). A total of 78 volatile compounds were identified, and 25 volatile compounds with OAV greater than 1 were selected as the aroma-active compounds (AACs) contributing to samples' integral aroma profile. Sixteen AACs in HDWS were identified, and four of them made important contributions, namely, 3-ethyl-2,5-dimethylpyrazine, 2,5-dimethyl pyrazide, trimethylamine, and 3-(methylthio)propionaldehyde. Fourteen AACs were the common constituents of hot-air-dried epidermis (HDE) and the whole, and their contents were quite close. CA result showed that HDWS and HDE had the highest similarity and were the first classified in a cluster. AACs summations and sensory scores of hot-air-dried head, shell, and meat decreased to various degrees after removal of shrimp epidermis, the reduction of which was more than 95% in the shell. The PLSR results showed a good correlation between most variables of sensory attributes and volatile compounds. It was concluded that shrimp epidermis made an important contribution to the aroma profile of dried shrimp and was the main source site of shrimp aroma. These results have important theoretical value for reconstructing and producing characteristic flavor substances of shrimp" |
| Keywords: | Animals Flavoring Agents Gas Chromatography-Mass Spectrometry Odorants/analysis *Penaeidae *Volatile Organic Compounds/analysis Aroma attributes Cluster analysis Hot-air-dried shrimp Partial-least-squares regression Sensory analysis; |
| Notes: | "MedlineZhang, Di Ji, Hongwu Liu, Shucheng Gao, Jing eng Research Support, Non-U.S. Gov't Canada 2020/11/26 Food Res Int. 2020 Nov; 137:109517. doi: 10.1016/j.foodres.2020.109517. Epub 2020 Jul 9" |
