期刊
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
卷 21, 期 5, 页码 400-408出版社
ELSEVIER
DOI: 10.1016/j.sjbs.2014.03.005
关键词
Antioxidant capacity; DPPH radical scavenging activity; Flavonoids; Metabolome; Multivariate data analysis; Saponins
类别
Metabolomic profiling of different parts (leaves, flowers and pods) of Acacia species (Acacia nilotica, Acacia seyal and Acacia laeta) was evaluated. The multivariate data analyses such as principal component analysis (PCA) and partial least square-discriminant analysis (PLS-DA) were used to differentiate the distribution of plant metabolites among different species or different organs of the same species. A. nilotica was characterized with a high content of saponins and A. seyal was characterized with high contents of proteins, phenolics, flavonoids and anthocyanins. A. laeta had a higher content of carbohydrates than A. nilotica and A. seyal. On the basis of these results, total antioxidant capacity, DPPH free radical scavenging activity and reducing power of the methanolic extracts of studied parts were evaluated. A. nilotica and A. seyal extracts showed less inhibitory concentration 50 (IC50) compared to A. laeta extracts which means that these two species have the strongest radical scavenging activity whereas A. laeta extracts have the lowest radical scavenging activity. A positive correlation between saponins and flavonoids with total antioxidant capacity and DPPH radical scavenging activity was observed. Based on these results, the potentiality of these plants as antioxidants was discussed. (C) 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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