EXPERIMENTAL STUDY OF THE SURVIVAL AND GROWTH OF PSEUDOMONAS AERUGINOSA IN WATER AFFECTED BY TEMPERATURE, STORAGE TIME AND TYPE OF WATER

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

MEDISM19_465

تاریخ نمایه سازی: 13 مهر 1397

Abstract:

Background and Aim:Supply of clean drinking water is the most important public health needs and infectious diseases can easily lead to a pandemic. Pseudomonas.aeruginosa is an opportunistic pathogen that affects immunocompromised people. Some studies show that Despite chlorination, tap water is a major source of Pseudomonas.aeruginosa. In the current study, we try to evaluated effective factors on the growth of the organism in drinking water.Methods:A multifactorial design was used to be investigate the effects of temperature, inoculation dose, and type of water as a nutrient on the growth of Pseudomonas.aeruginosa. This study was be conducted with the inoculation bacterium at the level of 104 /ml into drinking water and the factors investigated included: storage temperature of water (22 C° and 7C°), storage time of water (0, 3, 6, 12, 24, 48 days), type of mineral water (sterilized and non-sterilized) and tap water (sterilized and non-sterilized).Results:Analyzing the survival and growth of Pseudomonas.aeruginosa in bottled mineral waters (sterilized and non-sterilized ) and tap waters (sterilized and non-sterilized ) at temperatures of 22 and 7 C° in storage time of 48 days after the inoculation shows that the bacterium has a noticeable growth at 22 C° (P<0.01) and sanitary condition of water (sterilized) (P<0.05) and type of water (mineral) (P<0.01) have a positive effect on the growth of the bacterium.Conclusion:Results of this study show that the most important factor that facilitates Pseudomonas.aeruginosa growth in tap water is water temperature and the bacterium show the greatest growth at 22 C° (P<0.01)

Authors

Azin Takallo

Departmant of Hygiene, Faculty of Veterinary Sciences, Science and Research Branch, Islamic Azad university, Tehran, Iran

Vadood Razavilar

Departmant of Hygiene, Faculty of Veterinary Sciences, Science and Research Branch, Islamic Azad university, Tehran, Iran

Mohammad Reza Abedini

Departmant of Animal Sciences, Agriculture College, Varamin Branch, Islamic Azad university, Varamin, Iran