Metabolism of 17B-estradiol by oral Streptococcus mutans, Streptococcus sanguis, Bacillus cereus and Candida albicans

1991 ◽  
Vol 6 (2) ◽  
pp. 126-128 ◽  
Author(s):  
Anita Ojanotko-Harri ◽  
Merja Laine ◽  
Jorma Tenovuo
Keyword(s):  
Candida Albicans ◽  
Bacillus Cereus ◽  
Streptococcus Mutans ◽  
Mutans Streptococcus ◽  
Streptococcus Sanguis ◽  
Oral Streptococcus

scholarly journals Antimicrobial activity of oregan and clove essential oils against some foodborne pathogens

2020 ◽  
Vol 41 (1) ◽  
pp. 3
Author(s):  
Flavia Debiagi ◽  
Renata K.T. Kobayashi ◽  
Gerson Nakazato ◽  
Luciano Aparecido Panagio ◽  
Suzana Mali
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Essential Oils ◽  
Bacillus Cereus ◽  
Streptococcus Mutans ◽  
Enterococcus Faecalis ◽  
Foodborne Pathogens ◽  
Penicillium Citrinum

A preferência mundial para alimentos mais saudáveis e livres de aditivos químicos pelos consumidores, associada ao aumento da resistência bacteriana, resultaram na necessidade de medidas alternativas no setor de alimentos. Os óleos correspondem a antimicrobianos naturais e constituem uma classe emergente como substitutos dos produtos químicos sintéticos na conservação de alimentos. O objetivo deste trabalho foi avaliar a atividade antimicrobiana de óleos essenciais de orégano (OEO) e cravo (CEO ) frente a bactérias, fungos e leveduras de importância no setor de alimentos. OEO e CEO foram avaliados in natura (IN) e após processamento térmico (TP) a 120 o C por 5 minutos. Para avaliar a atividade antimicrobiana frente a cada microrganismo empregou-se o método de discodifusão e o teste de microdiluição em caldo (MIC). Tanto o OEO quanto o CEO apresentaram zonas de inibição semelhantes para amostras IN e TP, indicando que a atividade antimicrobiana desses óleos são resistentes a altas temperaturas. Os microrganismos mais sensíveis para ambos os óleos essenciais foram os fungos (Aspergillus niger, Penicillium citrinum e Candida albicans), seguidos por Staphylococcus aureus, Bacillus cereus e Staphylococcus aureus resistente à meticilina (MRSA). Já as cepas Streptococcus mutans e Enterococcus faecalis apresentaram uma maior resistência frente à atividade antimicrobiana dos óleos essenciais. Em geral, os maiores halos de inibição e menores valores de MIC foram obtidos quando empregado o OEO, sugerindo uma maior atividade microbiana do mesmo quando comparado ao CEO

scholarly journals An in Vitro Analysis of Antibacterial Efficacy of Local Brands of Toothpastes and Mouthrinses in Malaysian Market on Selected Oral Pathogens

2019 ◽  
Vol 7 (4.14) ◽  
pp. 57
Author(s):  
M Chandramohan ◽  
S W Chan ◽  
P Paulraj ◽  
P T Mohamed Javad ◽  
P Sajeesh ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Streptococcus Mutans ◽  
Oral Disease ◽  
Diffusion Method ◽  
Streptococcus Salivarius ◽  
Zone Of Inhibition ◽  
Streptococcus Sanguis ◽  
Streptococcus Oralis ◽  
Oral Pathogens

Oral disease affects a considerable portion of population and is considered one of the major causes of tooth loss in developed and developing countries. An in vitro study was conducted to investigate the antimicrobial efficacy of toothpastes and mouthrinses towards oral pathogens which are found to cause most of the oral diseases such as gingivitis and dental plague. In this study, a total of five toothpastes and four mouthrinses were investigated for their antimicrobial activity against five oral pathogens such as Streptococcus salivarius, Streptococcus sanguis, Streprococcus oralis, Streptococcus mutans and Candida albicans. The efficacy of different concentration of the toothpastes and mouthrinses were assessed by agar well diffusion method. Statistical analysis was performed by using analysis of variance (ANOVA) with post-hoc least square differences (LSD) method (p=0.05). Toothpaste B gave the maximum zone of inhibition against tested organisms, Streptococcus sanguis and Streptococcus oralis. Toothpaste C and E gave the maximum zone of inhibition against Streptococcus salivarius and Streptococcus mutans respectively. Toothpaste A was most effective against Candida albicans. Mouthrinse G was most effective against Streptococcus salivarius, Streptococcus sanguis, Streptococcus oralis and Candida albicans. In conclusion, the present study has demonstrated that dentifrices which contain fluoride and cetylpyridium chloride formulation gave the maximum zone of inhibition against the tested organisms compared to other active ingredients.

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