Three-Year Comparison of the Content of Antioxidant Microconstituents and Several Quality Characteristics in Organic and Conventionally Managed Tomatoes and Bell Peppers

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• 作者：Alexander W. Chassy ; Linh Bui ; Erica N. C. Renaud ; Mark Van Horn ; Alyson E. Mitchell
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2006
• 出版时间：October 18, 2006
• 年：2006
• 卷：54
• 期：21
• 页码：8244 - 8252
• 全文大小：174K
• 年卷期：v.54,no.21(October 18, 2006)
• ISSN：1520-5118

文摘

Understanding how the environment and production and cultivation practices influence the compositionand quality of food crops is fundamental to the production of high-quality nutritious foods. In this3-year study, total phenolics, percent soluble solids, ascorbic acid, and the flavonoid aglyconesquercetin, kaempferol, and luteolin were measured in two varieties of tomato (Lycopersicon esculentumL. cv. Ropreco and Burbank) and two varieties of bell peppers (Capsicum annuum L. cv. CaliforniaWonder and Excalibur) grown by certified organic and conventional practices in a model system.Significantly higher levels of percent soluble solids (17%), quercetin (30%), kaempferol (17%), andascorbic acid (26%) were found in Burbank tomatoes (fresh weight basis; FWB), whereas only levelsof percent soluble solids (10%) and kaempferol (20%) were significantly higher in organic Roprecotomatoes (FWB). Year-to-year variability was significant, and high values from 2003 influenced the3-year average value of quercetin reported for organic Burbank tomatoes. Burbank tomatoes generallyhad higher levels of quercetin, kaempferol, total phenolics, and ascorbic acid as compared to Roprecotomatoes. Bell peppers were influenced less by environment and did not display cropping systemdifferences.