Wang Ziwei, Liu Fujun, Luo Ying, Zeng Xiangbo, Pei Xuechen, Zhao Guanhua, Zhang Min, Zhou Dayong, Yin Fawen
School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China.
Liao Fishing Group Limited Company, Dalian 116000, China.
Foods. 2022 Nov 23;11(23):3768. doi: 10.3390/foods11233768.
Antarctic krill () oil contains high levels of marine omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). In industrial production, krill oil is usually extracted from krill meals by using ethanol as a solvent. Water in the krill meal can be easily extracted by using ethanol as an extraction solvent. During the extraction process, the EPA and DHA are more easily oxidized and degraded when water exists in the ethanol extract of krill oil. Based on the analysis of peroxide value (POV), thiobarbituric acid-reactive substances (TBARS), fatty acid composition, and lipid class composition, the present study indicated that the composite antioxidants (TP-TPP) consist of tea polyphenol (TP) and tea polyphenol palmitate (TPP) had an excellent antioxidant effect. By contrast, adding TP-TPP into ethanol solvent during the extraction process is more effective than adding TP-TPP into krill oil after the extraction process.
南极磷虾油含有高水平的海洋ω-3长链多不饱和脂肪酸（n-3 LC-PUFA），包括二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）。在工业生产中，磷虾油通常通过使用乙醇作为溶剂从磷虾粉中提取。磷虾粉中的水分可以很容易地通过使用乙醇作为提取溶剂来提取。在提取过程中，当磷虾油的乙醇提取物中存在水分时，EPA和DHA更容易被氧化和降解。基于对过氧化值（POV）、硫代巴比妥酸反应性物质（TBARS）、脂肪酸组成和脂质类别组成的分析，本研究表明由茶多酚（TP）和茶多酚棕榈酸酯（TPP）组成的复合抗氧化剂（TP-TPP）具有优异的抗氧化效果。相比之下，在提取过程中向乙醇溶剂中添加TP-TPP比在提取过程后向磷虾油中添加TP-TPP更有效。
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