Osei Collins Yeboah, Lee Sookyeong, Lee Gi-An, Lee Sae Hyun, Yoo Eunae, Lee Jae-Eun, Kim Eun-Gyeong, Yang Tae-Jin
National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea.
Council for Scientific and Industrial Research, Plant Genetic Resources Research Institute, Bunso P.O. Box 7, Ghana.
Foods. 2024 Sep 16;13(18):2932. doi: 10.3390/foods13182932.
Rising health concerns regarding chronic diseases call for exploring natural sources of antioxidants and factors that influence their activity. This study evaluated the diversity of 112 sesame germplasms from Africa and Asia based on ten agronomic traits (seven quantitative and three qualitative), two antioxidant activities (ABTS and DPPH radical scavenging activities), and the content of one metabolite (TPC). TPC, DPPH, and ABTS were in the ranges of 4.98-87.88 µg GAE/mg DE, 3.97-46.23 µg AAE/mg DE, and 3.42-176.01 µg TE/mg DE, respectively. Statistical analyses revealed significant variations in agronomic traits, TPC, and antioxidant activities among the sesame germplasms ( < 0.05). Furthermore, the individual and interaction effects of seed color and the continent of origin on the levels of the quantitative traits, TPC, ABTS, and DPPH were analyzed, and the correlation among the traits was further evaluated. Diversity in TPC, ABTS, and DPPH was significantly associated with seed color and most of the quantitative agronomic traits ( < 0.05) but not with continent of origin. Principal component analysis revealed TPC, ABTS, DPPH, and five quantitative traits as the most discriminant traits. In general, six sesame accessions with high TPC and antioxidant activities (IT194356, IT170094, IT29971, IT185998, IT104246, and IT169623) as well as important agronomic traits were identified and, hence, could be used for developing improved sesame varieties.
人们对慢性病的健康担忧日益增加，这就需要探索抗氧化剂的天然来源以及影响其活性的因素。本研究基于十个农艺性状（七个数量性状和三个质量性状）、两种抗氧化活性（ABTS和DPPH自由基清除活性）以及一种代谢物的含量（总酚含量），对来自非洲和亚洲的112份芝麻种质资源的多样性进行了评估。总酚含量、DPPH和ABTS的范围分别为4.98 - 87.88 μg没食子酸当量/mg干提取物、3.97 - 46.23 μg抗坏血酸当量/mg干提取物和3.42 - 176.01 μg Trolox当量/mg干提取物。统计分析表明，芝麻种质资源在农艺性状、总酚含量和抗氧化活性方面存在显著差异（<0.05）。此外，分析了种子颜色和原产地对数量性状、总酚含量、ABTS和DPPH水平的个体及交互作用，并进一步评估了性状之间的相关性。总酚含量、ABTS和DPPH的多样性与种子颜色和大多数数量农艺性状显著相关（<0.05），但与原产地无关。主成分分析表明，总酚含量、ABTS、DPPH和五个数量性状是最具区分性的性状。总体而言，鉴定出了六个具有高总酚含量和抗氧化活性（IT194356、IT170094、IT29971、IT185998、IT104246和IT169623）以及重要农艺性状的芝麻种质，因此可用于培育改良芝麻品种。
