Influence of cabbage (Brassica oleracea) accession and growing conditions on myrosinase activity, glucosinolates and their hydrolysis products

Oloyede, O. O. ORCID: https://orcid.org/0000-0001-6392-0937, Wagstaff, C. ORCID: https://orcid.org/0000-0001-9400-8641 and Methven, L. (2021) Influence of cabbage (Brassica oleracea) accession and growing conditions on myrosinase activity, glucosinolates and their hydrolysis products. Foods, 10 (12). 2903. ISSN 2304-8158 doi: 10.3390/foods10122903

Abstract/Summary

Glucosinolates are secondary plant metabolites present in Brassica vegetables. The endogenous enzyme myrosinase is responsible for the hydrolysis of glucosinolates, yielding a variety of compounds, including health-promoting isothiocyanates. The influence of cabbage accession and growing conditions on myrosinase activity, glucosinolates (GSL) and their hydrolysis products (GHPs) of 18 gene-bank cabbage accessions was studied. Growing conditions, cabbage morphotype and accession all significantly affected myrosinase activity and concentration of glucosinolates and their hydrolysis products. In general, cabbages grown in the field with lower growth temperatures had significantly higher myrosinase activity than glasshouse samples. Profile and concentration of glucosinolates and their hydrolysis products differed across the accessions studied. Aliphatic glucosinolates accounted for more than 60 % of total glucosinolates in most of the samples assessed. Nitriles and epithionitriles were the most abundant hydrolysis products formed. The results ob- tained showed that consumption of raw cabbages might reduce the amount of beneficial hydrolysis products available to the consumer, as more nitriles were produced from hydrolysis compared to beneficial isothiocyanates. However, red and white cabbages contained high concentrations of glucoraphanin and its isothiocyanate, sulforaphane. This implies that careful selection of accessions with ample concentrations of certain glucosinolates can improve the health benefits derived from raw cabbage consumption.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/102097
Identification Number/DOI	10.3390/foods10122903
Refereed	Yes
Divisions	Interdisciplinary Research Centres (IDRCs) > Institute for Food, Nutrition and Health (IFNH) Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
Publisher	MDPI
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