Camila Miorelli Girondi1, Analu Barros de Oliveira2, Jackeline Alves Prado1, Cristiane Yumi Koga-Ito1, Aline Chiodi Borges1, Alberto Carlos Botazzo Delbem3, Daniel Freitas Alves Pereira1, Marcos José Salvador4, Fernanda Lourenção Brighenti2. 1. Department of Environmental Engineering & Oral Biopathology Graduate Program, Universidade Estadual Paulista (UNESP), São José dos Campos Institute of Science & Technology, Avenida Engenheiro Francisco José Longo, 777, São José dos Campos, SP 12245-000, Brazil. 2. Department of Orthodontics & Pediatric Dentistry, Universidade Estadual Paulista (UNESP), Araraquara Dental School, R Humaitá, 1680, Araraquara, SP 14801-903, Brazil. 3. Department of Pediatric Dentistry, Universidade Estadual Paulista, Araçatuba Dental School, Rua José Bonifácio, 1193, Araçatuba, SP 16015-050, Brazil. 4. Department of Plant Biology, Institute of Biology, Universidade Estadual de Campinas (UNICAMP), R Monteiro Lobato, 255, Campinas, SP 13083-862, Brazil.
Abstract
AIM: This study screened plants for antibacterial properties against bacteria of medical importance. MATERIALS & METHODS: 60 extracts were obtained from the leaves of ten plants (Jatropha weddelliana, Attalea phalerata, Buchenavia tomentosa, Croton doctoris, Mouriri elliptica, Mascagnia benthamiana, Senna aculeata, Unonopis guatterioides, Allagoptera leucocalyx and Bactris glaucescens) using different extraction methods: A) Ethanol 70°C/72 h; B) Water/5 min/100°C; C) Water/1 h/55°C; D) Water/72 h; E) Hexane/72 h and F) Ethanol 99°C/72 h. Enterobacteria/Pseudomonas and staphylococci reference strains and 201 clinical isolates were used. Primary screening was done using agar well-diffusion assay. MIC/minimum bactericidal concentration and chemical characterization were determined. RESULTS: Extracts 5F and 3A showed the best MIC/minimum bactericidal concentration against clinical isolates and showed the presence of phenols. CONCLUSION: The present study demonstrated that Mouriri elliptica and Buchenavia tomentosa were the most active plants against the studied bacteria.
AIM: This study screened plants for antibacterial properties against bacteria of medical importance. MATERIALS & METHODS: 60 extracts were obtained from the leaves of ten plants (Jatropha weddelliana, Attalea phalerata, Buchenavia tomentosa, Croton doctoris, Mouriri elliptica, Mascagnia benthamiana, Senna aculeata, Unonopis guatterioides, Allagoptera leucocalyx and Bactris glaucescens) using different extraction methods: A) Ethanol 70°C/72 h; B) Water/5 min/100°C; C) Water/1 h/55°C; D) Water/72 h; E) Hexane/72 h and F) Ethanol 99°C/72 h. Enterobacteria/Pseudomonas and staphylococci reference strains and 201 clinical isolates were used. Primary screening was done using agar well-diffusion assay. MIC/minimum bactericidal concentration and chemical characterization were determined. RESULTS: Extracts 5F and 3A showed the best MIC/minimum bactericidal concentration against clinical isolates and showed the presence of phenols. CONCLUSION: The present study demonstrated that Mouriri elliptica and Buchenavia tomentosa were the most active plants against the studied bacteria.
Authors: Ana C J de Araújo; Priscilla R Freitas; Cristina Rodrigues Dos Santos Barbosa; Débora F Muniz; Janaína Esmeraldo Rocha; José B de Araújo Neto; Maria M C da Silva; Talysson F Moura; Raimundo L S Pereira; Jaime Ribeiro-Filho; Luiz E da Silva; Wanderlei do Amaral; Cícero Deschamps; Saulo R Tintino; Marcello Iriti; Sara Vitalini; Henrique D Melo Coutinho Journal: Antibiotics (Basel) Date: 2020-01-14