纤细苋菜杂草的抗菌和抗氧化活性

IF 0.8 Q3 Agricultural and Biological Sciences
M. Akbar, I. Sherazi, M. S. Iqbal, T. Khalil, H. Waqas
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引用次数: 7

摘要

摘要:本文研究了细芒苋(Amaranthus viridis L.)的抑菌活性和抗氧化活性[清除1,1-二苯基-2-苦酰肼(DPPH)自由基]。用正己烷、氯仿和乙酸乙酯制备了不同植物部位的提取物。用100 mg mL-1浓度的提取物对4种致死性植物病原菌(丁香假单胞菌Van Hall)、番茄青霉(Ralstonia solanacearum Smith)、胡萝卜Erwinia carotovora (Jones)、Holland和axonopodis Hasse)进行抑菌活性测定。在抗氧化剂试验中,以DPPH为对照,分别使用10、20和30 mg mL-1提取物。在这些生物测定中,绿草叶乙酸乙酯部位表现出最好的抗菌和抗氧化活性。乙酸乙酯叶段对紫丁香假单胞菌的抑菌带直径(IZD)最大,分别为21 mm和19 mm。在10、20和30 mg mL-1浓度下,该提取物的抗氧化活性分别为22.2%、52%和84%。在此之前,还没有关于绿草根提取物对丁香假单胞菌抑菌活性的报道。此外,还首次研究了正己烷、氯仿和乙酸乙酯中茎、根提取物的抗氧化活性。结果表明,在本研究中观察到的生物活性可能是由于存在可作为天然抗菌和抗氧化剂利用的生物活性成分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Antibacterial and Antioxidant Activities of Slender Amaranth Weed
ABSTRACT: In the present study, antibacterial and antioxidant [1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity] activities of a weed, slender amaranth (Amaranthus viridis L.) were investigated. Extracts of different plant parts were prepared in n-hexane, chloroform and ethyl acetate. Antibacterial activity was measured by using 100 mg mL-1 concentration extracts against 4 deadly phytopathogenic bacterial species viz. Pseudomonas syringae Van Hall, Ralstonia solanacearum Smith, Erwinia carotovora (Jones), Holland and Xanthomonas axonopodis Hasse. In antioxidants assays, 10, 20 and 30 mg mL-1 extracts were used keeping DPPH as control. In these bioassays, ethyl acetate fraction of A. viridis leaf exhibited the best antibacterial and antioxidants activity. Ethyl acetate leaf fraction showed the highest inhibition zone diameter (IZD) where it caused 21 mm IZD against P. syringae and 19 mm IZD against E. carotovora. This extract also showed 22, 52 and 84% antioxidant activity at 10, 20 and 30 mg mL-1 concentrations, respectively. Previously there is no report available that describes antibacterial activity of root extract of A. viridis against P. syringae. Moreover, antioxidant activity of stem and root extracts in n-hexane, chloroform and ethyl acetate was investigated first time in the world. It was concluded that the biological activities observed during the present investigation may be due to the presence of bioactive constituents that can be harnessed as natural antibacterials and antioxidants.
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
审稿时长
16 weeks
期刊介绍: Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.
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