Impact of selenium supply on Se-methylselenocysteine and glucosinolate accumulation in selenium-biofortified Brassica sprouts

Brassica sprouts are widely marketed as functional foods. Here we examined the effects of Se treatment on the accumulation of anticancer compound Se-methylselenocysteine (SeMSCys) and glucosinolates in Brassica sprouts. Cultivars from the six most extensively consumed Brassica vegetables (broccoli,...

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Bibliographic Details
Published in:Food chemistry 2014-12, Vol.165, p.578-586
Main Authors: AVILA, Fabricio William, YONG YANG, FAQUIN, Valdemar, RAMOS, Silvio Junio, GUILHERME, Luiz Roberto G, THANNHAUSER, Theodore W, LI LI
Format: Article
Language:English
Subjects:
Amino Acids - chemistry
Anticarcinogenic Agents - chemistry
Biological and medical sciences
Brassica
Brassica - chemistry
Chromatography, Liquid
Food toxicology
Food, Fortified - analysis
Glucosinolates - chemistry
Imidoesters - chemistry
Medical sciences
Selenium - chemistry
Selenium Compounds - chemistry
Selenocysteine - analogs & derivatives
Selenocysteine - chemistry
Sulfur - chemistry
Tandem Mass Spectrometry
Toxicology
Vegetables
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Summary:Brassica sprouts are widely marketed as functional foods. Here we examined the effects of Se treatment on the accumulation of anticancer compound Se-methylselenocysteine (SeMSCys) and glucosinolates in Brassica sprouts. Cultivars from the six most extensively consumed Brassica vegetables (broccoli, cauliflower, green cabbage, Chinese cabbage, kale, and Brussels sprouts) were used. We found that Se-biofortified Brassica sprouts all were able to synthesize significant amounts of SeMSCys. Analysis of glucosinolate profiles revealed that each Brassica crop accumulated different types and amounts of glucosinolates. Cauliflower sprouts had high total glucosinolate content. Broccoli sprouts contained high levels of glucoraphanin, a precursor for potent anticancer compound. Although studies have reported an inverse relationship between accumulation of Se and glucosinolates in mature Brassica plants, Se supply generally did not affect glucosinolate accumulation in Brassica sprouts. Thus, Brassica vegetable sprouts can be biofortified with Se for the accumulation of SeMSCys without negative effects on chemopreventive glucosinolate contents.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2014.05.134