Total and individual glucosinolate contents in inflorescences of eight broccoli cultivars grown under various climatic and fertilisation conditions

Total aliphatic, indolic and aromatic glucosinolates were evaluated in the edible portions of fresh harvested inflorescences of five commercial and three experimental broccoli (Brassica oleracea L var italica) cultivars grown under various climatic and agronomic conditions, ie early (winter) or late...

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Bibliographic Details
Published in:Journal of the science of food and agriculture 2003-03, Vol.83 (4), p.307-313
Main Authors: Vallejo, F, Barberan-Tomas, F.A, Garcia-Benavente Gonzalez, A, Viguera-Garcia, C
Format: Article
Language:English
Subjects:
Biological and medical sciences
Brassica oleracea
Brassica oleracea var. italica
broccoli
cultivars
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
glucobrassicin
glucoraphanin
glucosinolates
health-promoting
inflorescences
LC/MS
season
spring
sulfur
sulphur fertilisation
winter
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Summary:Total aliphatic, indolic and aromatic glucosinolates were evaluated in the edible portions of fresh harvested inflorescences of five commercial and three experimental broccoli (Brassica oleracea L var italica) cultivars grown under various climatic and agronomic conditions, ie early (winter) or late (spring) season with poor (15 kg ha(-1)) or rich (150 kg ha(-1)) sulphur fertilisation, in an attempt to identify differences due to genetic and agronomic factors. The predominant glucosinolates in all broccoli cultivars were 4-methylsulphinylbutyl-glucosinolate (glucoraphanin), 3-indolylmethyl-glucosinolate (glucobrassicin) and 1-methoxy-3-indolylmethyl-glucosinolate (neoglucobrassicin). The results showed no significance differences in total glucosinolates between rich and poor fertilisation, whereas total glucosinolates were detected more significantly in the late than in the early season. All broccoli cultivars showed a higher content of indolic glucosinolates than aliphatic glucosinolates. Clear advantages were detected in the analysed commercial cultivars, as the experimental cultivars yielded lower concentrations of these compounds.
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.1320