The Rate of Bacteriophage Inactivation by Filtrates of Escherichia Coli Cultures
نویسندگان
چکیده
1. The rate of inactivation of an anti-coli phage by filtrates of cultures of the homologous bacteria has been studied. 2. The inactivation rate at 37 degrees C. is proportional to phage concentration and filtrate concentration. 3. At 0 degrees C. the rate of phage inactivation becomes proportional to the square root of the filtrate concentration. 4. A reaction scheme to account for these observations is suggested and discussed. 5. This coli-phage is also inactivated by relatively large concentrations of soluble starch, inulin, gum arabic, and acetylated gum arabic. 6. The inactivation is markedly influenced by salt concentration, being rapid at moderate salt concentrations and slow at high or extremely low salt concentrations. 7. The inactivated phage cannot be regenerated by high salt concentrations, or by soaps.
منابع مشابه
Isolation of lytic bacteriophages against pathogenic Escherichia coli strains in poultry in the northwest of Iran
In this study, 90 internal organ samples of poultry with symptoms of colibacillosis were obtained from Maragheh poultry farms in East Azerbaijan, Iran. In total, 70 bacterial isolates were confirmed as Escherichia coli (E. coli) strains using standard biochemical tests, and antibiotic sensitivity was determined by the disk diffusion method. Antibiotics used in this study included ampicillin, pe...
متن کاملInvestigation on Escherichia Coli Inactivation and Some Quality Changes in Carrot Juice by Ultrasound Technique
In this study Response Surface Methodology was used to optimize process conditions and to evaluate the effect of ultrasound on quality attributes (antioxidant activity, pH, total soluble solid, turbidity) and the inactivation of Escherichia coli bacteria in carrot juice. Independent variables in this study were temperature (25-50°C), time (20-40 min) and frequency (0-130 kHz). In this study the...
متن کاملInvestigation on Escherichia Coli Inactivation and Some Quality Changes in Carrot Juice by Ultrasound Technique
In this study Response Surface Methodology was used to optimize process conditions and to evaluate the effect of ultrasound on quality attributes (antioxidant activity, pH, total soluble solid, turbidity) and the inactivation of Escherichia coli bacteria in carrot juice. Independent variables in this study were temperature (25-50°C), time (20-40 min) and frequency (0-130 kHz). In this study the...
متن کاملLytic Activity of Isolated Phage from Milk Against Extended-Spectrum Beta-Lactamase Escherichia coli
Background and purpose: Escherichia coli (E.coli) is the most common cause of urinary tract infection. The treatment strategy has been hampered by the emergence of broad-spectrum beta-lactamase-producing E.coli and its resistance to most antibiotics. Bacteriophages are suggested as an alternative treatment option. This study aimed at evaluating the lytic activity of isolated phage from unpaste...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of General Physiology
دوره 24 شماره
صفحات -
تاریخ انتشار 1941