Browsing by Author "Sayeed, Mohammed Abu"

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Antimicrobial activities of isolated probiotics and their metabolites against some pathogenic microorganisms
(CRP, International Islamic University Chittagong, Bangladesh, 2017-06) Sayeed, Mohammed Abu; Hossen, Altaf; Saha, Repon; Jakaria, Md.
The study was aimed to finding the antimicrobial activities among probiotics isolated from different yoghurts and their metabolites against some common bacterial pathogens. The nutrient agar media overlay method (Disc diffusion Method) was used to determine the presence of antibacterial effects among the isolated probiotics. Probiotics produced potential antibacterial activities against several pathogenic bacteria and fungi. The maximum antibacterial property (13.5 mm of zone of inhibition) of bacterial strain found against Salmonella paratyphi. Conversly, bacterial metabolites produced maximum effect (10.3 mm of zone of inhibition) against Staphylocuccos aureaus. The antibacterial effect is one of the most important criteria for probiotics selection, and the verified antibacterial activities of the probiotics supports the development of these functional foods as a key to the enhancement of health in the consuming public.
In vitro antimicrobial and antiarthritic effects of methanolic extract of Zanthoxylum rhetsa leaves
(CRP, International Islamic University Chittagong, 2023-12) Sayeed, Mohammed Abu; Ali, Md. Sekendar; Chowdhuy, U Swe Sing; Islam, Ameerul; Ruzzama, Naiya; Muzammil Ahmad; Azad, Afrina
The antimicrobial study of Zanthoxylum rhetsa leaves methanol extract was evaluated by the disc diffusion method against some pathogenic organisms. It exhibits the activity against almost all the test bacterial and fungal species with the zone of inhibition from mild to moderate in different concentrations- 100, 300 and 500 μg/disc where microbial species exhibits from minimum 10 to maximum 27 mm zone of inhibition. The Antiarthritic test have also done by using six concentrations for UV absorbance of test solution, product control solution, test control solution and percentage of inhibition of methanolic extract of Z. rhetsa with comparison of standard Diclofenac sodium in different concentrations like 31.75 μg/mL, 62.5 μg/mL, 125 μg/mL, 250 μg/mL, 500 μg/mL and 1000 μg/mL where different concentrations showed an increase in all the parameters that was significant from test, control and standard groups. The present study indicates that, the extract has both antibacterial and antifungal activity from mild to moderately in different concentrations and has significantly antiarthritic activities.