Abstract
Glucosinolate content in Camelina sativa (L.) Crantz (false flax, gold-of-pleasure) and its relatives C. microcarpa, C. alyssum, C. rumelica and C. hispida was investigated. With the exception of C. hispida in which GSL3 was absent, in all remaining species, three characteristic glucosinolates (GSL1, GSL2 and GSL3) were identified. Camelina genotypes of spring type (C. sativa CAM134, C. alyssum CAM21) showed a typical pattern of glucosenolates with GSL1 > GSL3. GSL1 was present in traces in C. microcarpa and at low levels in C. rumelica and C. alyssum subsp. alyssum. In C. hispida, the GSL1 content was greater than GSL2 and, only in this specie, GSL2 represented less than 50% of total glucosinolates. These differences in the glucosinolate pattern among Camelina species could be exploited to reduce the total content of glucosinolates in C. sativa.
Highlights
Glucosinolates (GSLs) are a class of substances present in plants of the Brassicaceae family [1]
We extended the investigation on the GSL levels among Camelina species
Among all Camelina species sown in spring only C. sativa CAM 134 and C. alyssum CAM 21 resulted to be spring type because they started the stem elongation after about 50 days, all the remaining samples resulted winter type since required vernalisation to attain stem elongation and subsequent flowering
Summary
Glucosinolates (GSLs) are a class of substances present in plants of the Brassicaceae family [1]. GSLs are anionic and sulfur-rich compounds that after hydrolysis by the enzyme thioglucosidase (called myrosinase) produce different catabolites (e.g., isothiocyanates, thiocyanates, epithionitriles and nitriles) with detrimental and antinutritional characteristics. These molecules derived from GSLs are responsible for their toxicity as impairment of thyroid, growth, fertility, irritation of the gastro-intestinal mucosa [2]. The extraction of oil from seeds makes available protein-enriched flours as an ingredient in animal feed Exploitation of these flours may be limited by the presence of GSLs. In the case of Brassica napus were selected varieties with a low content of GSLs and, canola meal is commonly used in animal diets [4]
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