Flavonoids and antioxidant capacity of various cabbage genotypes at juvenile stage
Flavonoids and antioxidant capacity of various cabbage genotypes at juvenile stage
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DOI：
10.1111/j.1365-2621.2004.tb09916.x
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发表时间：
2004-11-01
影响因子：
3.9
通讯作者：
Griffiths, PD
中科院分区：
文献类型：
--
作者：
Kim, DO;Padilla-Zakour, OI;Griffiths, PD
对10个代表新鲜市场、加工和储藏类型的新鲜甘蓝品种(Brassica Lenacea Var Capitata)在3周幼龄期的总酚、抗氧化能力和类黄酮进行了评估，在这一阶段，植株在相同的土壤和环境条件下生长时大小一致。所研究的‘山猫’、‘Fresco’、‘Little Rock’、‘Marvelon’、‘Rinda’、‘Ramada’、‘TransAm’、‘Genesee’、‘Huron’和‘Ocking’等品种在酚类植物化学物质浓度和抗氧化能力方面存在显著差异。总酚含量从110.2毫克没食子酸当量/100g到153.3毫克没食子酸当量/100g不等。总抗氧化能力在108.4~176.1 mg维生素C当量/100g之间，类黄酮类化合物从检测不到到2.61mgQercetin/100g和1.3~7.03mgKaempferol/100g。来自农业和食品加工来源的五种营养土壤补充剂(槲皮素黄酮络合物、商品蔬菜汁、碎洋葱、碎大蒜和绿茶)每周一次添加到‘Rinda’甘蓝品种中，持续3wk，以评估它们在提高甘蓝叶片中酚浓度方面的效果。添加这些补充剂一般会增加幼年‘Rinda’植物中的总酚水平(商业蔬菜汁为97%)、抗氧化能力(商业洋葱为41%)和槲皮素+山奈酚(商业蔬菜汁为110%)，而添加绿茶并没有显著增加。营养土壤补充剂可以提高卷心菜中作为抗氧化剂的生物活性酚类化合物的水平，从而为消费者提供。
Ten fresh cabbage genotypes (Brassica oleracea var capitata) representing fresh-market, processing, and storage types were evaluated for total phenols, antioxidant capacity, and flavonoids at the 3-wk juvenile stage, at which time plants are uniform in size when grown under identical soil and environmental conditions. The genotypes studied,'Bobcat','Fresco','Little Rock','Marvelon','Rinda','Ramada','Transam','Genesee','Huron',and 'Octoking', showed significant variations in concentration of phenolic phytochemicals and antioxidant capacity. Total phenols ranged from 110.2 mg gallic acid equivalents/100 g in 'Genesee' to 153.3 mg gallic acid equivalents/100 g in 'Bobcat'. Total antioxidant capacity varied from 108.4 to 176.1 mg vitamin C equivalents/100 g, and flavonoids from nondetectable to 2.61 mg quercetin/100 g and from 1.30 to 7.03 mg kaempferol/100 g. Apigenin, luteolin, and myricetin were not detected. Five nutritional soil supplements from agricultural and food processing sources (quercetin flavonoid complex, commercial vegetable juice, crushed onion, crushed garlic, and green tea) were added to the cabbage genotype' Rinda' once a week for 3 wk to assess their efficacy in increasing phenolic concentrations in cabbage leaves. Addition of the supplements generally resulted in increased levels of total phenols (97% with commercial vegetable juice), antioxidant capacity (41% with crushed onion), and quercetin plus kaempferol (110% with commercial vegetable juice) in the juvenile 'Rinda' plants with no significant increase with the addition of green tea. Nutritional soil supplements could provide enhanced levels of bioactive phenolic compounds as antioxidants in cabbage and therefore to consumers.