期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 152, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2021.112336
关键词
Penaeus sinensis by-products; Astaxanthin; Lipid oxidation; Pasteurization; Degradation kinetics
资金
- National Key R & D Program of China [2018YFD0901105]
- Excellent Master's Degree Thesis Cultivation Project of Zhejiang Ocean University [2019-41]
The addition of astaxanthin extracted from shrimp by-products was found to effectively inhibit lipid oxidation of soybean oil or peanut oil, with saponification astaxanthin demonstrating better stability and antioxidant activity, suitable for pasteurization at 60-70 degrees Celsius.
The lipid oxidation of soybean oil or peanut oil under accelerated oxidation was retarded after addition of non-saponification (N-Asta) or saponification astaxanthin (S-Asta) derived from Penaeus sinensis by-products, determined by lower malondialdehyde and peroxide value as compared with the oil controls. S-Asta or N-Asta degradation in soybean oil or peanut oil fit well to first order model. Further, the soybean oil or peanut oil containing S-Asta demonstrated lower lipid oxidation as compared to those with N-Asta addition. The thermal stability of S-Asta was further evaluated under 60-90 degrees C pasteurization. Significant decreases of scavenging hydroxyl radical and superoxide anion, and Asta isomers concentrations were found for S-Asta under 90 degrees C pasteurization; whereas the antioxidant activity of S-Asta was largely restored under 60-70 degrees C pasteurization. The degradation kinetics of all tans, 9-cis and 13-cis Asta, as well as Asta stereoisomers in S-Asta fit to zero order kinetics, and well described by the Arrhenius equation. The highest and lowest activation energy values of 164.83 +/- 14.87 kJ/mol for all trans Asta and 17.63 +/- 0.99 kJ/mol for 3S,3'R Asta suggested their highest and the lowest pasteurization stabilities. By comparison, 13-cis, 3S,3'S, and 3R,3'R showed similar thermal stabilities under pasteurization.
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