Effect of black spot infection on the chemical composition and comprehensive quality of pecan(Carya illinoinensis)kernel oil  

作　　者：Shuang Wu Jun Chang Xiaohua Yao Kailiang Wang Chengcai Zhang 

机构地区：[1]Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou,China

出　　处：《Food Quality and Safety》2024年第2期369-377,共9页食品品质与安全研究（英文版）

摘　　要：Objectives:The changes in the chemical composition of oil from pecan kernels following infection with black spot disease were evaluated to determine whether the disease affects the quality of the seed oil.The fndings should provide theoretical support for developing the pecan industry and enhancing the risk resistance of the industry.Materials and Methods:Oil samples from healthy and diseased pecan kernels were obtained using the squeezing method,and the bioactive substances and fatty acid composition of the two types of oil samples were compared.The degree of oxidation and deterioration of the diseased kernel oil was evaluated.Based on supervised orthogonal partial least squares-discriminant analysis,gray correlation analysis,and unsupervised factor analysis,a multivariate evaluation model was established to comprehensively score the quality of the two types of oils.Results:The results showed that,compared with the healthy kernel oil,the contents of total polyphenols and favonoids,as well as the peroxide and acid values,were signifcantly higher in the diseased kernel oil.The content of oleic acid,as well as the ratio of monounsaturated fatty acids to polyunsaturated acids,was also signifcantly higher in the diseased kernel oil.In addition,no afatoxin was detected.Multivariate analysis revealed no signifcant difference in the quality of diseased kernel oil compared with that of healthy kernel oil.Conclusions:Therefore,following infection,the pecan oil begins to oxidize,but this does not have a signifcant negative effect on the nutrients,suggesting that oil from diseased kernels has the potential to be further processed and sold as edible-grade vegetable oil.

关 键 词：Bioactive substance black spot comprehensive quality fatty acid composition PECAN OIL 

分 类 号：TS224[轻工技术与工程—粮食、油脂及植物蛋白工程]