Effects of Phenolic Compounds and Fatty Acids of Virgin Olive Oil from Wudu on Oil Oxidation Stability
Fatty acids,phenolic compounds,and oxidative stability of virgin olive oils(VOO)from 14 varieties of Ulliri Bardhe(U),Empeltre(E),Koroneiki(K),Ascolana Tenera(As),Zhongshan24(Z),Yuntai14(Y),Picual(P),Arbequina(Arbe),Manzanilla(M),Ezhi8(Ez),Arbosana(Arbo),Coratina(C),Leccino(L)and Frantoio(F)were detected and analyzed.One-way analysis of variance results showed that significant differences were observed between varieties for polyphenol and fatty acid content and oil oxidation stability(p<0.05).The fatty acids composition of all the analyzed samples conformed to the European Union standard for extra virgin olive oils.The oleic acid content in virgin olive oil was between(56.12±0.24)%(Arbe)and(71.45±0.42)%(C),the linoleic acid content was between(5.73±0.06)%(P)and(15.80±0.05)%(As),and the palmitic acid content was between(12.67±0.12)%(C)and(18.76±0.04)%(Arbe).Secoiridoids were the main phenolic components.The highest total phenolic content was Koroheiki,which was(471.35±29.34)mg/kg,and the lowest content was Arbequina,only(165.65±8.08)mg/kg.Principal component analysis showed that the oxidative stability of varieties rich in oleuropein aglycone,ligstroside aglycone,olive secoiridoid,apigenin and oleic acid was higher,while that of varieties rich in palmitic acid,linoleic acid,oleocanthal,tyrosol and hydroxytyrosol was lower.A multiple linear stepwise regression model based on apigenin,olive secoiridoid,luteolin,and linoleic acid could predict 90.70%of the oil oxidation capacity(p<0.001).
Olea europaea Lsecoiridoidsfatty acidsprincipal component analysismultiple linear stepwise regression analysis
唐凤霞、李川、周昊、陈虹霞、张昌伟、王成章
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中国林业科学研究院 林产化学工业研究所
江苏省生物质能源与材料重点实验室
国家林业和草原局林产化学工程重点实验室
林木生物质低碳高效利用国家工程研究中心
江苏省林业资源高效加工利用协同创新中心,江苏 南京 210042
Institute of Chemical Industry of Forest Products,CAF
Key Lab.of Biomass Energy and Material,Jiangsu Province
Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration
National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing 210042,China
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