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  4. Antioxidant and antibacterial activities of extracts from Conyza bonariensis growing in Yemen

Antioxidant and antibacterial activities of extracts from Conyza bonariensis growing in Yemen

Authors

Thabit Riyadh Abdulmajid Saleh
Cheng, Xiang Rong
Tang, Xue
Sun, Jin
Shi, Yong Hui
Le, Guo Wei
Jiangnan University ; , State K. Laboratory of Food Science and Technology ; School of Food Science and Technology,

Pak. J. Pharm. Sci. 2015; 28 (1): 129-134
Pakistan Journal of Pharmaceutical Sciences
Journal Country: Pakistan
P-ISSN: 1011-601X
Type of Publication: Journal Article
Country of Research: Yemen
Type of Research: Non Clinical
Keywords: Conyza
Board Subjects: Health Systems, Antioxidants ,Anti-Bacterial Agents ,Punicaceae ,Plant Extracts
Citation: Riyadh Abdulmajid Saleh Thabit ,Xiang Rong Cheng ,Xue Tang ,Jin Sun ,Yong Hui Shi ,Guo Wei Le , Antioxidant and antibacterial activities of extracts from Conyza bonariensis growing in Yemen, Pak. J. Pharm. Sci. 2015; 28 (1): 129-134

Abstract English

Thistudy aims to examine the antioxidant and antibacterial activities and phenolic contents of Conyza bonariensis growing in Yemen. The whole plants of C. bonariensis were ultrasonically extracted by ethanol. The antioxidant activity of the extract was determined by 2, 2-diphenyl-1-picrylhydrazyl [DPPH] and beta -carotene bleaching [BCB] . The effectiveness of the extract on the growth inhibition of some indicators of foodborne illness bacteria were investigated by agar well diffusion assay. The total phenols [TP] , total flavonoids [TF] , total tannins [TT] , and total anthocyanins [TA] were determined by Folin-Ciocalteu method, aluminium chloride method, Folin and Ciocalteu method, and pH-differential method, respectively. The extract of C. bonariensis possessed TP 144.1 mg/g, TF 143 mg/g, TT 0.99mg/g, and TA 0.97mg 100g, with 94.57% inhibition of DPPH and 92.47% inhibition of BCB, and strong inhibitory effects against tested bacteria, which was approximate to those of peel extract of Punica granatum

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