High Hydrostatic Pressure Treatment of Oysters ( Crassostrea gigas )—Impact on Physicochemical Properties, Texture Parameters, and Volatile Flavor Compounds

• Published in: Molecules
• Main Authors: Yuyang Ma, Runfang Wang, Tietao Zhang, Yunsheng Xu, Suisui Jiang, Yuanhui Zhao
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2021
• Subjects: oyster; high hydrostatic pressure treatment; fatty acid composition; texture parameters; volatile flavor; edible quality; Organic chemistry; QD241-441; Crassostrea gigas
• Online Access: https://doi.org/10.3390/molecules26195731; https://doaj.org/article/cd6e8b7aa9c74e09a1fead36d7b8b4e0

High hydrostatic pressure (HHP) treatment is a non-thermal processing technology, which is widely used in the food processing field at present. In this study, the effects of HHP treatment (100~500 MPa for 5 min) on the physicochemical properties, texture parameters, and volatile flavor compounds of oysters were investigated. The results showed that HHP treatment increased the water content while reducing the crude protein and ash content of the oyster. Texture parameters showed that HHP treatment improved the hardness, springiness, chewiness, and cohesiveness of oysters, compared with the control group. In addition, the saturated fatty acid (SFA) content was slightly increased after HHP treatment, while the difference in monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) content was not significant. Furthermore, HHP increased hexenoic aldehyde, 2,4-heptadienal, 1-octene-3-ol, and 2-octen-1-ol and decreased the contents of 3. 6-nadien-1-ol, 3-octanone, and 2-undecanone, suggesting that HHP might inhibit the fishiness of oyster and showed a positive effect on its flavor. Based on the above results, HHP improved the edible qualities such as texture properties and volatile flavor of oysters. This meets the requirements of consumers on the edible quality of seafood and provides new ideas for the development of seafood.