Prolonging the oxidative stability of walnut oil by endogenous antioxidants: Phytosterol compounding for improved antioxidant capacity
文献类型： 外文期刊
作者： Zhang, Xu 1 ; Zhan, Xiaoqian 1 ; Liu, Wenyu 1 ; Wang, Ting 4 ; Zhang, Ting 5 ; Wei, Changqing 1 ;
作者机构： 1.Shihezi Univ, Sch Food Sci & Technol, Key Lab Agr Prod Proc & Qual Control Specialty, Coconstruct Minist & Prov, Shihezi 832000, Xinjiang, Peoples R China
2.Shihezi Univ, Sch Food Sci & Technol, Key Lab Food Nutr & Safety Control Xinjiang Prod &, Shihezi 832000, Xinjiang, Peoples R China
3.Shihezi Univ, Engn Res Ctr Storage & Proc Xinjiang Characterist, Sch Food Sci & Technol, Minist Educ, Shihezi 832000, Xinjiang, Peoples R China
4.Xinjiang Acad Agr & Reclamat Sci, Shihezi, Xinjiang, Peoples R China
5.Xinjiang Acad Agr Sci, Res Inst Farm Prod Storage & Proc, Urumqi, Peoples R China
关键词： Natural antioxidants; Oxidation stability index (OSI); Coefficient of variance analyses; Partial least squares regression (PLSR)
期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.6； 五年影响因子：4.6 ）
ISSN： 0889-1575
年卷期： 2025 年 137 卷
页码：
收录情况： SCI
摘要： Walnut oil, loaded with unsaturated fatty acids, offers significant health advantages yet is greatly vulnerable to oxidative spoilage.The investigation explored the impact of four oil extraction techniques on the inherent antioxidants, fatty acid profiles, antioxidant efficacy, and oxidation stability index (OSI) of walnut oil. The investigation utilized variance analysis coefficients and partial least squares regression analyses were conducted. It identified J3-sitosterol and stigmasterol as crucial inherent antioxidant compounds. The maximal concentrations achieved through hot pressing were 943.16 mg/kg for J3-sitosterol and 121.54 mg/kg for stigmasterol. Stigmasterol contribution to the DPPH radical scavenging activity was found to be 0.8224 in PLS1 (R2>0.95). Consequently, the combined effect of these antioxidants on the OSI was tested., revealing that a 2:1 ratio of these substances, under conditions of 45 degrees C ultrasound temperature and 27 minutes ultrasound duration(p<0.05), improved the OSI from 2 to 6.42.
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