Factors Affecting the Glucosinolate Content of Kale (Brassica oleracea acephala Group)
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- 作者：Pablo Velasco ; Marí ; a Elena Cartea ; Carmen Gonzá ; lez ; Marta Vilar ; Amando Ordá ; s
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2007
- 出版时间：February 7, 2007
- 年：2007
- 卷：55
- 期：3
- 页码：955 - 962
- 全文大小：112K
- 年卷期：v.55,no.3(February 7, 2007)
- ISSN：1520-5118
文摘
Kales (Brassica oleracea acephala group) are important vegetable crops in traditional farming systemsin the Iberian Peninsula. They are grown throughout the year to harvest their leaves and flower buds.The glucosinolate content of kales is dependent upon the environmental factors, plant part examined,phenological stage of plant growth, and level of insect damage. The objectives of this study were toevaluate the changes in the total and individual glucosinolate concentrations during plant developmentand to determine if significant variation of glucosinolate levels can be explained by insect pests attackand other environmental factors in four locations in northwestern Spain. The total glucosinolateconcentration in leaves of B. oleracea increased with plant age from seedling to early flowering stages.At that stage, the aliphatic glucosinolate content in leaves of B. oleracea declined drastically overtime as the content in the flower buds increased. The highest contents of indolyl glucosinolate(glucobrassicin) and of the aromatic glucosinolate occurred in leaves harvested at the optimumconsumption stage while flower buds contained the highest concentration of aliphatic glucosinolates,especially sinigrin. Sinigrin is reported to have anticarcinogenic properties. There appears to be aloss of total and individual glucosinolate concentrations related to pest attack. Leaves damaged bylepidopterous pests contained a lower total glucosinolate content (25.8 
mol g-1 dw) than undamagedleaves (41 mol g-1 dw). The amounts of sinigrin, glucoiberin, and glucobrassicin were also lowestin insect-damaged leaves. Environmental factors such as soil properties and temperature appear toinfluence the glucosinolate content in leaves although more research on this subject is needed.
mol g-1 dw) than undamagedleaves (41 mol g-1 dw). The amounts of sinigrin, glucoiberin, and glucobrassicin were also lowestin insect-damaged leaves. Environmental factors such as soil properties and temperature appear toinfluence the glucosinolate content in leaves although more research on this subject is needed.