期刊
BRITISH JOURNAL OF NUTRITION
卷 101, 期 11, 页码 1664-1672出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007114508116269
关键词
Organic food; Carotenoids; Bioavailability; Antioxidant status
资金
- Federal Agency for Agriculture and Food
- Bundesprogramm okologischer Landbau [04013027]
It has been hypothesised that organically grown vegetables are healthier than conventionally produced ones due to a higher content of phytochemicals. However, few data from controlled human studies exist. The aim of the present study was to compare the carotenoid content and antioxidant capacity of organically and conventionally produced carrots under defined conditions. Furthermore, a human intervention study was conducted to compare bioavailability, plasma antioxidant capacity, endogenous DNA strand breaks and immune parameters in healthy men ingesting carrots from different agricultural systems. Thirty-six volunteers consumed either organically or conventionally produced blanched carrots (200g/d; 2 weeks) or no carrots in a double-blind, randomised intervention study. No statistically significant differences were observed in the total carotenoid contents (121 (SD 7) mu g/g organic v. 116 (SD 13) mu g/g conventional) and the antioxidant capacities (0.43 (SD 0.08) mu mol Trolox equivalents/g organic v. 0.32 (SD 0.07) mu mol Trolox equivalents/g conventional) of the carrots administered to the volunteers. Intake of organically or conventionally produced carrots significantly increased (P<0.001) plasma alpha- and beta-carotene concentrations in both intervention groups without differences in plasma carotenoid concentrations. Consumption of carrots did not lead to significant changes in the plasma antioxidant status, endogenous DNA strand breaks and parameters of the immune system in all groups. Therefore, these results indicate that the agricultural system has neither an effect on the carotenoid content, the antioxidant capacity of carrots, nor on the bioavailability of carotenoids and on antioxidant, antigenotoxic and immunological effects as assessed in a human intervention study.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据