Bioremediation of Heavy Metals by Indigenous Probiotic LABstrains in Invitro Condition

سال انتشار: 1401
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 211

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شناسه ملی سند علمی:

MEDISM23_550

تاریخ نمایه سازی: 16 مهر 1401

چکیده مقاله:

Background and Aim : The expansion of human industrial activities in the present age has led toa significant increase in the amount of heavy metals in air, water, and soil. One of the major waysof entry of heavy metals into the human body is through food chain, fruits and vegetablescontamination. Probiotic Lactic acid bacteria are shown to possess the ability to aggregate heavymetals and thus represent a promising approach to decontaminating heavy metals in food andwater, and possibly the gastrointestinal tract. The aim of this investigation is to select probioticsstrain to reduce the contamination of heavy metals especially for in fruits and vegetables.Methods : Effectiveness of several LAB isolates procured from Razi vaccine and Serum ResearchInstitute, were evaluated for their ability to bind cadmium (Cd), Lead (Pb) and nickel (Ni) in invitroconditions. The parameters were studied under the conditions of constant pH, temperature,and contact time. All results were analyzed statistically.Results : Seven LAB strains with probiotic properties (L. casei, L. rhamnosus, L. plantarum, L.fermentum, Ent. faecium, L. helveticus and L. acidofilous) showed different level of bindingability to the tested heavy metals. Among the isolates, L. plantarum, L. fermentum, Ent. faeciumshowed the highest bioabsorption efficiency and were able to adsorp Pb and Cd (۹۹%) during ۱۵minutes of initial contact. However, in the case of Ni, highest biosorption rate (۹۱.۱۵±۰.۰۱%) wasseen within ۳۰ minutes of contact time. Overall, E.faecium showed highest adsorption of the testedheavy metals which were equivalent to ۷۹.۷۵±۰.۱۱, ۷۵.۲۸±۰.۰۵ and ۸۳.۹۹±۰.۱۰% for Pb, Cd andNi, respectively.Conclusion : probiotic strains (L. plantarum, L. fermentum and E.faecium) might be a potentnatural bio-sorbent for the removal of Cd, Pb and Ni removal from fruits and vegetables. However,further insitu studies are required to confirm their efficacy and applications for future use.

نویسندگان

Mahdieh Mostafidi

PhD Student, Department of Food Science and Technology, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran

Mohammad Reza Sanjabi

Iranian Research Organization for Science and Technology (IROST), Tehran, Iran

Naheed Mojgani

Research & Development Department, Razi Vaccine & Serum Research Institute-Agriculture Research Education and Extension Organization (AREEO), Karaj, Iran

Sohyel Eskandari

Food and Drug Laboratory Research Center, Food & Drug Administration, Ministry of Health and Medical Education (MOH+ME), Tehran, Iran

Sepideh Arbabi Bidgoli

Department of Toxicology and Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, Islamic Azad University, Tehran Medical Sciences (IAUTMU), Tehran-Iran