Glucosinolate Brassica species

Progoitrin, ((/J)-2-hydroxy-3-butenyl glucosinolate), occurs in rape Brassica napus) and other Brassica species. The (5)-epimer epiprogoitrin, potassium salt amorphous solid, [a]o -14.8° (H2O), is the main glucosinolate in the seeds of sea kale. Crambe spp.), e. g., C. maritima (white sea kale) and C. hispanica (Spanish sea kale). - Glucosinalbin (4-hydroxybenzyl glucosinolate) occurs in Brassica seeds. The salt with... 

Figure 7.12 Glucosinolates and indole-3-methanol are found in brassica species. Note indole-3-...

Cruciferous species, in which the glucosinolates are biologically active compounds (44), have been studied in both of the latter categories. In Australia, allelopathy has been associated with introduced crucifers such as Brassica tournefortii Gouan (wild turnip) and a more complete study has been made of Camelina sativa (L.) Grants (false flax). 

Table 4.1.4A. Canola seed cooked (IFN 5-04-597). The entire seed of the species Brassica napus or B. campestris, the oil component of which contains less than 2% erucic acid and the solid component of which contains less than 30pmol of any one or any mixture of 3-butenyl glucosinolate, 4-pentenyl glucosinolate, 2-hydroxy-3-butenyl glucosinolate and 2-hydroxy-4-pentenyl glucosinolate per g of air-dry, oil-free solid (GLC method of the Canadian Grain Commission). (From CFIA, 2007.)...

Research has also been conducted into the development of unique high-glucosinolate producing Brassica sp. hybrids (54). These species are suggested as industrial crops because the meal they produce is inedible and would not enter feed markets, but the glucosinolates in the meal provide the potential for use of the meal or meal extracts as pesticides. The tuber, yellow nut-sedge Cyprus esculentus L.), is also a rich source of oil, and blends of this oil with diesel fuels have been recommended (55). 

Three mustard types were chosen from the Hrassicii species, yellow (Brassica hirfa), brown, and oriental Brassica jMicea). Eleven mustard samples representing harvest areas of southwestern Canada were analyzed in triplicate for glucosinolate content. Percent coefficient of variation between triplicate samples of the same batch was often less than 10%. 

Canola oil is the oil extracted from whole seeds of varieties from Brassica campestris and Brassica napus species with low levels of both erucic acid and glucosinolates, which are commonly processed for edible purposes. It shall not contain more than 5% erucic acid. For complete details see Table II. 

Cultivated plants, which have a reduced level of secondary products due to selection (F I) suffer from microbial infections more frequently than their wild type ancestors. The many milder-flavored cultivars of Brassica for instance, with low glucosinolate accumulation, are frequently infected by mildew, in contrast to the related wild-type species with high glucosinolate content. 

At least 300 species of Brassicas have been studied for their glucosinolate content. The compounds are mainly concentrated in the seeds, although they can be found anywhere in the plants. They can... 

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