{"title":"Stepwise peroxidation of canola and olive oils: A kinetic study","authors":"Melika Jooyandeh, Shima Jaldani, Reza Farhoosh","doi":"10.1002/aocs.12756","DOIUrl":null,"url":null,"abstract":"<p>Kinetics of change in the concentration of lipid hydroperoxides (LOOH) and carbonyls (LCO) were simultaneously investigated during peroxidation of canola and olive oils at 90°C. Depending essentially on the fatty acid compositions, the canola and olive oils exhibited one-step and two-step, respectively, multiphase peroxidations before attaining the typical termination phase. Higher and lower rates of the LOOH formation and decomposition, respectively, in the second than in the first step of the canola oil peroxidation were attributed to the dominant peroxidation of linolenic acid in the first step, and the added peroxidation of oleic and linoleic acids in the second step. The kinetics of change in [LCO], which was affected by the potency of constituting antioxidative compounds, indicated that the canola oil would be safe to use till the end of the first peroxidation step whereas the olive oil should be discarded at its induction period.</p>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"100 12","pages":"975-983"},"PeriodicalIF":1.9000,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Oil Chemists Society","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aocs.12756","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Kinetics of change in the concentration of lipid hydroperoxides (LOOH) and carbonyls (LCO) were simultaneously investigated during peroxidation of canola and olive oils at 90°C. Depending essentially on the fatty acid compositions, the canola and olive oils exhibited one-step and two-step, respectively, multiphase peroxidations before attaining the typical termination phase. Higher and lower rates of the LOOH formation and decomposition, respectively, in the second than in the first step of the canola oil peroxidation were attributed to the dominant peroxidation of linolenic acid in the first step, and the added peroxidation of oleic and linoleic acids in the second step. The kinetics of change in [LCO], which was affected by the potency of constituting antioxidative compounds, indicated that the canola oil would be safe to use till the end of the first peroxidation step whereas the olive oil should be discarded at its induction period.
期刊介绍：
The Journal of the American Oil Chemists’ Society (JAOCS) is an international peer-reviewed journal that publishes significant original scientific research and technological advances on fats, oils, oilseed proteins, and related materials through original research articles, invited reviews, short communications, and letters to the editor. We seek to publish reports that will significantly advance scientific understanding through hypothesis driven research, innovations, and important new information pertaining to analysis, properties, processing, products, and applications of these food and industrial resources. Breakthroughs in food science and technology, biotechnology (including genomics, biomechanisms, biocatalysis and bioprocessing), and industrial products and applications are particularly appropriate.
JAOCS also considers reports on the lipid composition of new, unique, and traditional sources of lipids that definitively address a research hypothesis and advances scientific understanding. However, the genus and species of the source must be verified by appropriate means of classification. In addition, the GPS location of the harvested materials and seed or vegetative samples should be deposited in an accredited germplasm repository. Compositional data suitable for Original Research Articles must embody replicated estimate of tissue constituents, such as oil, protein, carbohydrate, fatty acid, phospholipid, tocopherol, sterol, and carotenoid compositions. Other components unique to the specific plant or animal source may be reported. Furthermore, lipid composition papers should incorporate elements of yeartoyear, environmental, and/ or cultivar variations through use of appropriate statistical analyses.
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