Determination of 18 Intact Glucosinolates in Brassicaceae Vegetables by UHPLC-MS/MS: Comparing Tissue Disruption Methods for Sample Preparation
文献类型: 外文期刊
作者: Yu, Xiaolu 1 ; He, Hongju 1 ; Zhao, Xuezhi 1 ; Liu, Guangmin 1 ; Hu, Liping 1 ; Cheng, Bing 1 ; Wang, Yaqin 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr, Inst Agrifood Proc & Nutr, Beijing 100097, Peoples R China
关键词: intact glucosinolates; Brassicaceae vegetables; triple quadrupole mass spectrometry; tissue disruption
期刊名称:MOLECULES ( 影响因子:4.927; 五年影响因子:5.11 )
ISSN:
年卷期: 2022 年 27 卷 1 期
页码:
收录情况: SCI
摘要: Glucosinolates (GSLs) are important precursor compounds with anticancer activities in Brassicaceae vegetables and are readily hydrolyzed by myrosinase. Given the diversity of these species, establishing an accurate and universal method to quantify intact GSLs in different plant tissues is necessary. Here, we compared and optimized three tissue disruption methods for sample preparation. After microwave treatment for 90 s, 13 GSLs in homogenized Chinese cabbage samples were recovered at 73-124%. However, a limitation of this method was that different tissues could not be processed under the same microwave conditions. Regarding universality, GSLs in Brassicaceae vegetables could be extracted from freeze-dried sample powder with 70% methanol (v/v) or frozen-fresh sample powder with 80% methanol (v/v). Moreover, heating extraction is necessary for GSLs extracted from frozen-fresh sample powder. Average recoveries of the two optimized methods were 74-119% with relative standard deviations <= 15%, with the limits of quantification 5.72-17.40 nmol/g dry weight and 0.80-1.43 nmol/g fresh weight, respectively. Notably, the method for analyzing intact GSLs was more efficient than that for desulfo-GSLs regarding operational complexity, detection speed and quantification accuracy. The developed method was applied to identify the characteristic GSLs in 15 Brassicaceae vegetables, providing a foundation for further research on GSLs.
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