Laboratoire des Substances Bioactives Centre de Biotechnologie à la Technopole de Borj-Cédria, BP 901, Hammam-Lif, Tunisia.
J Food Sci. 2012 Jun;77(6):C734-9. doi: 10.1111/j.1750-3841.2012.02731.x.
This research evaluated the effect of drought on total and individual polyphenol contents as well as the antioxidant activities of cumin (Cuminum cyminum L.) seeds of 2 geographic origins, Tunisia (TCS) and India (ICS). Plants were treated with different levels of water deficit: control. Our results indicated that, in both varieties, moderate water deficit (MWD) improved the number of umbels per plant as well as the number of umbellets per umbel and the seed yield, in comparison to the control, but it decreased under severe water deficit (SWD). Besides, total phenolic contents were higher in the treated seeds and drought increased the level of total and individual polyphenols. This increase was appreciably more important in TCS than in ICS. Moreover, antioxidant activities of the extracts were determined by 4 different test systems, namely 2,2-diphenyl-1-picrylhydrazyl, β-carotene/linoleic acid chelating, and reducing power assays, and showed that treated seeds exhibited the highest activity, for both TCS and ICS.
本研究评估了干旱对来自两个不同产地（突尼斯[TCS]和印度[ICS]）的孜然（Cuminum cyminum L.）种子总多酚和单体多酚含量以及抗氧化活性的影响。对植物施以不同程度的水分亏缺：对照。结果表明，与对照相比，在中度水分亏缺（MWD）下，两种品种的每株伞数、每伞小伞数和种子产量均有所提高，但在重度水分亏缺（SWD）下则有所下降。此外，处理过的种子中的总酚含量更高，干旱增加了总多酚和单体多酚的含量。这种增加在 TCS 中比在 ICS 中更为显著。此外，通过 4 种不同的测试系统（2,2-二苯基-1-苦基肼基、β-胡萝卜素/亚油酸螯合和还原力测定）测定提取物的抗氧化活性，结果表明，处理过的种子表现出最高的活性，无论是 TCS 还是 ICS。
