Glucosinolate profiling of seeds and sprouts of B. oleracea varieties used for food

Abstract

Consumption of plants of the species Brassica oleracea is related to a decreased incidence of certain cancer forms in humans, and this has been linked to the presence of glucosinolates in those vegetables. After ripe seeds, sprouts of some brassicaceous plants contain the highest concentration of these compounds and are therefore a good source of glucosinolates for chemoprotection. In the present experiments, the content and distribution of glucosinolates was determined in ripe seeds and sprouts (seedlings) of five varieties of B. oleracea (white cabbage, red cabbage, Savoy cabbage, broccoli and cauliflower) by high performance liquid chromatography. The type and concentration of individual glucosinolates varied according to variety of B. oleracea, plant parts in which they occurred and the sprouting period of the seed. Concentration of alkyl glucosinolates decreased whereas that of indol-3-ylmethylglucosinolates increased throughout the sprouting period. Roots had the highest glucosinolate concentration in four and seven day old sprouts whereas at both sprouting times, cotyledons had the highest concentration of alkylthio-and alkylsulphinylglucosinolates. #

Herbivore induction of the glucosinolate–myrosinase defense system: major trends, biochemical bases and ecological significance

“…The amounts observed vary depending on the organ, developmental stage, time of day and physical factors of the environment (Bellostas et al 2007;Brown et al 2003;Petersen et al 2002;Rosa et al 1994;Shelton 2005), but glucosinolates are usually present throughout the plant at easily detectable levels. Yet following herbivore damage or simulated damage, the amounts of certain glucosinolates are typically induced by several-fold.…”

Indole glucosinolate breakdown and its biological effects

“…Many vegetables contain significant levels of substituted indole glucosinolates in addition to IMG (e.g., Bellostas et al 2007). As the physiological effects of indoles are exerted via receptor binding, products of substituted indole glucosinolates could potentially exert either stronger or weaker effects, but this hypothesis has been investigated to only a very limited extent.…”

LED Lights Enhance Metabolites and Antioxidants in Chinese Cabbage and Kale

“…GSLs have various biological activities with being hydrolyzed by myrosinase (thioglucosidase) (Yang and Quiros 2010). The hydrolyzed products of GSLs have different structure and bioactivity depending on their parent GSLs (Bellostas et al 2007). The hydrolyzed products of GSLs (sulforaphane and other isothiocyanates) contributed to have a great potential role in anti-carcinogenic effects (Commane et al 2005).…”