Effect of management (organic vs conventional) on volatile profiles of six plum cultivars (Prunus salicina Lindl.). A chemometric approach for varietal classification and determination of potential markers
Effect of management (organic vs conventional) on volatile profiles of six plum cultivars (Prunus salicina Lindl.). A chemometric approach for varietal classification and determination of potential markers
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DOI：
10.1016/j.foodchem.2015.12.049
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发表时间：
2016-05-15
期刊：
影响因子：
8.8
通讯作者：
Ruiz-Moreno, M. J.
中科院分区：
文献类型：
--
作者：
Cuevas, F. J.;Moreno-Rojas, J. M.;Ruiz-Moreno, M. J.
6个李品种的挥发性成分分析（“Laetitia”、“Primetime”、“Sapphire”、“Showtime”、“Songold”和“Souvenir”）采用顶空固相微萃取-气相色谱-质谱联用技术，对连续两年采集的25种有机和常规有机农药的代谢产物进行了分析，（戊醛、（E）-2-庚烯醛、1-辛醇、桉叶醇和2-戊基呋喃）为首次报道。己醛是受管理系统影响的主要挥发性化合物。此外，偏最小二乘判别分析（PLS-DA）实现了一个有效的分类基因型的基础上，他们的挥发性配置文件。获得了高分类准确度模型，灵敏度为97.9%，特异性为99.6%。此外，双重标准的应用，基于变量选择的方法，VIP（变量的重要性投影）和单变量分析（ANOVA）的结果，允许识别潜在的挥发性标记在'黄金时段'，'Showtime'和'纪念品'基因型（品种没有表征的日期）。(C)2015爱思唯尔有限公司版权所有。
The volatile profiles of six plum cultivars ('Laetitia', 'Primetime', 'Sapphire', 'Showtime', 'Songold' and 'Souvenir') produced under two management systems (conventional and organic) and harvested in two consecutive years were obtained by HS-SPME-GC-MS. Twenty-five metabolites were determined, five of which (pentanal, (E)-2-heptenal, 1-octanol, eucalyptol and 2-pentylfuran) are reported for the first time in Prunus salicina Lindl. Hexanal stood out as a major volatile compound affected by the management system. In addition, partial least square discriminant analysis (PLS-DA) achieved an effective classification of genotypes based on their volatile profiles. A high classification accuracy model was obtained with a sensitivity of 97.9% and a specificity of 99.6%. Furthermore, the application of a dual criterion, based on a method of variable selection, VIP (variable importance in projection) and the results of a univariate analysis (ANOVA), allowed the identification of potential volatile markers in 'Primetime', 'Showtime' and 'Souvenir' genotypes (cultivars not characterised to date). (C) 2015 Elsevier Ltd. All rights reserved.