Medicinal & Aromatic Plants
Open Access

The Antimicrobial Potential of Different Plant and Algae Extracts Against Some Foodborne Pathogens

Joint meet on 13^th International Conference on Predictive, Preventive and Personalized Medicine & Molecular Diagnostics

July 27, 2021 | Webinar

Neelamanie Yapa

Srilanka

Posters & Accepted Abstracts: Med Aromat Plants

Abstract :

Some bacterial pathogens are caused foodborne diseases and consider as a significant public health threat. Considering the safety of using natural antimicrobials for treating foodborne diseases, hot water extracts of different plants and marine algae were used for the evaluation of antibacterial potential against foodborne pathogens. Staphylococcus aureus NCTC 6571, Staphylococcus aureus ATCC 25923, Escherichia coli NCTC 10418, Escherichia coli ATCC 25922, Enterococcus faecalis and Pseudomonas aeruginosa were selected. Antibacterial activity was evaluated by following the standard well diffusion method and bacterial population was 1.5 x 108, CFU mL-1. It was revealed that among tested aqueous extracts of marine algae Chnoospora minima showed antibacterial activity against both strains of S. aureus, while Gracilaria folifera against E. faecalis. Minimum inhibitory concentration (MIC) was approximately 0.5 g mL-1. Among tested culinary herbs Asamodagam showed the highest antibacterial activity (p<0.05) followed by Rosemary, Santolina, Savory, Oregano and Coriander against all tested bacteria with variable potential. Minimum inhibitory concentration of above herb extracts was 0.2 g mL-1. Green and black tea (Camellia sinensis), stems of Hemidesmus indicus, fruit pulp of wood apple was inhibited the growth of both strains of S. aureus and approximately minimum concentration was 0.2 g mL-1. It can be concluded that aqueous extracts of some marine algae, herbal tea and culinary herbs are potentially effective as natural antimicrobials against some of the tested foodborne pathogens.

Biography :

I am Neelamanie Yapa, working as a senior lecturer at Faculty of Applied Sciences, Rajarata University of Sri Lanka. I have earned B.Sc., two M.Sc. and M.Phil. degrees and submitted the Ph.D. thesis. I have 30 years of teaching and research experience mostly related to plant sciences and microbiology. My main research fields are mycorrhizae, biofertilizers, industrial microbiology, soil microbiology and food microbiology