Herbicidal activity and bioactive components of Brucea javanica (L.) Merr. residue

文献类型： 外文期刊

第一作者： Huang, Y.

作者： Huang, Y.;Chen, L.;He, B.;Liu, S. Y.;Zeng, D. Q.;Tang, W. W.;Huang, Y.;Du, L. W.;Wang, Y. H.;Huang, Y.

作者机构：

关键词： Brucea javanica (L; ) Merr; Residue; Bruceine D; Herbicidal activity

期刊名称：ARABIAN JOURNAL OF CHEMISTRY （ 影响因子：5.165； 五年影响因子：5.397 ）

ISSN： 1878-5352

年卷期： 2021 年 14 卷 7 期

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收录情况： SCI

摘要： There are many nutrients and active substances in the residue of traditional Chinese medicine, which can be processed into organic fertilizer and returned to the field to improve the soil fertility. In this study, we found that Brucea javanica (L.) Merr. residue has herbicidal activity and can be used for weed control in the field, this prompted us to investigate the active constituents in it. The herbicidal activities of extracts of B. javanica residue were evaluated by conducting bioassays against gramineous weed, Eleusine indica (L.) Gaertn. and broad-leaved weed, Bidens pilosa L., respectively. It confirmed that ethyl acetate and n-butanol extracts possessed potent biological activities on seed germination and seedling growth of E. indica at 5 mg/mL. This prompted us to investigate the active constituents in the seeds residue. By the activity-guided fractionation, eight known compounds were isolated, which were bruceines D-F (1-3), pityriacitrin (4), 4-(9H-b-carbolin-1-yl)-4-oxobut-2-enoic acid methyl ester (5), protocatechuic acid (6), vanillic acid (7) and carisphthalate (8). Then, three quassinoids (1-3) were evaluated for their potential herbicidal effects in bioassay. Results showed that bruceines D-F have potential herbicidal activity against the test weeds. In the range of experimental concentration, bruceine D had obvious herbicidal effect on the two tested weeds. At the concentration of 31.25 lg/mL, bruceine D could completely inhibit the root growth of E. indica; at the concentration of 125 lg/mL, bruceine D can inhibit the seed germination and shoot elongation of E. indica and the shoot growth of B. pilosa, with the inhibition reached 100%. In addition, at the same concentration (250 lg/mL), bruceines D-F could com-pletely affected shoot elongation of B. pilosa. These results showed that B. javanica residue is a potential source of botanical herbicide development, which has great agricultural economic value, at the same time, the reuse of B. javanica residue realizes the transformation of waste into treasure, rational utilization of resources and sustainable development. (c) 2021 The Authors. Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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