文献类型：期刊文献

英文题名：Identification of Volatile Oxidation Compounds as Potential Markers of Walnut Oil Quality

作者：Zhou, Ye[1] Fan, Wei[1] Chu, Fuxiang[2] Wang, Chengzhang[2] Pei, Dong[1]

第一作者：周晔

通信作者：Pei, D[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 10091, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2018

卷号：83

期号：11

起止页码：2745-2752

外文期刊名：JOURNAL OF FOOD SCIENCE

收录：;Scopus(收录号：2-s2.0-85055874777);WOS:【SCI-EXPANDED(收录号:WOS:000449645700008)】；

基金：The authors acknowledge financial support from the National Natural Science Foundation of China (Nos. 50472084).

语种：英文

外文关键词：accelerated storage; marker; peroxide value; volatile oxidation compound; walnut oil

摘要：In this study, a 10-day accelerated storage at 60 degrees C was carried out to investigate the evolution of volatile profiles of walnut oils from three cultivars (cvs. Santai, Xiangling, Qingxiang). Eighteen volatile oxidation compounds, including three alcohols, 11 aldehydes, one furan, one ketone, and two acids, were identified in all oil samples. Data from the three cultivars were combined and the analysis showed that 2-heptenal and 1-octen-3-ol exhibited the strongest linear correlations with peroxide value (PV), p-anisidine value (p-AnV), and the residual content of total tocopherols (R-tocos). The contents of both compounds were also proved to be significant variables for PV, p-AnV, and R-tocos, according to the jack-knife uncertainty test applied in partial least squares analysis. Hence, 2-heptenal and 1-octen-3-ol could be used as potential markers of walnut oil quality. Besides, the oleic-derived compounds such as octanal and nonanal were suggested to be used to indicate notable decrease of PUFAs during walnut oil oxidation, since they showed the strongest negative correlations with the residual content of PUFAs (R-PUFAs).