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Antimicrobial potential of aqueous coffee extracts against pathogens and Lactobacillus species:A food matrix application

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Food Bioscience 2022年第3期47卷 1142-1149页

作者： Luiza Andrea Canci Marta de Toledo Benassi Cristiane Canan Daneysa Lahis Kalschne Eliane Colla Departamento de Alimentos Universidade Tecnológica Federal do ParanáAvenida Brasil4232Bairro Independência85884-000MedianeiraPRBrazil Centro de Ciências Agrárias Universidade Estadual de LondrinaRodovia Celso Garcia Cid PR 445 Km 38086057-970LondrinaParanáBrazil

coffee is recognized by its bioactive potential,mainly antioxidant and antimicrobial *** aim of this study was to evaluate the antimicrobioal potential of aqueous extracts of Coffea arabica(AR)(roasted)and Coffea canephora[roasted(CR)and green(CG)]against patogens Salmonella Typhimurium and Escherichia coli,and probiotics Lactobacillus plantarum and Lactobacillus ***,the strain's sensitivity were tested by disk diffusion method,followed by the evaluation of growth kinetics(lag phase duration,maximum specific growth rate and logarithmic increase in the population)in culture media and in a food matrix(milk)by the adjustment of Gompertz predictive *** the step of strain sensivity tests,*** and *** were sensitive against all coffee extracts from 0.5%to 5.0%,while the Lactobacilli growth were not *** the growth kinetic tests in culture media,roasted coffees extracts reduced logarithmic increase in the population and maximum specific growth rate and improved lag phase for ***;for *** the growth was completely inhibited with 2.5%CR and 5.0%*** correlations between growth parameters with coffee bioactive contents suggested that melanoidins had the main antimicrobial *** the step of food matrix application(growth kinetics in milk),the addition of 5.0%CR reduced *** and *** multiplication,while the probiotics *** and *** where not inhibetd,suggesting a selective effect of coffee extracts as an antimicrobial agent,which may be of great interest for the food industry,especially for probiotic foods application.

关键词： Coffea arabica Coffea canephora Escherichia coli Green coffee roasted coffee Salmonella Typhimurium

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