Examination of Coliforms in Frozen Dairy Products
نویسندگان
چکیده
منابع مشابه
Plating procedure for the enumeration of coliforms from dairy products.
A "repair-detection" procedure consisting of pour plating of food samples with Trypticase soy agar, followed by 1-h repair incubation at room temperature and subsequent overlay with violet red bile agar, was found to be an effective method for the detection of injuried and uninjuried coliforms from dairy products. This method was relatively less effective for the detection of coliforms in many ...
متن کاملRepair and enumeration of injured coliforms in frozen foods.
Two strains of Escherichia coli manifested death and repairable injury after being frozen in water or sterile foods at -20 C. The injured survivors were inhibited from forming colonies on violet red bile agar (VRBA) or deoxycholate lactose agar; this inhibition was greater when enumeration was done by the pour plate method instead of the surface or surface-overlay method. Injured cells repaired...
متن کاملStandard methods for the examination of dairy products.
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متن کاملSignificance of coliforms and enterococci in fish products.
Coliforms, more recently fecal coliforms, and enterococci are often used to assess the hygienic quality of foods. Although these bacteria serve rather successfully as an index of fecal pollution of water supplies, their usefulness in measuring fecal pollution in foods is less than satisfactory. The ratio and correlation of coliforms and enterococci in fish-fillet and lobster-meat samples led us...
متن کاملA source of coliforms in frozen concentrated orange juice; fruit surface contamination.
GOTTLIEB, D., BHATTACHARYYA, P. K., CARTER, H. E., AND ANDERSON, H. W. 1951 Endomycin, a new antibiotic. Phytopathology, 41, 393-400. HESSELTINE, C. W., BENEDICT, R. G., AND PRIDHAM, T. G. 1954 Useful criteria for species differentiation in the genus Streptomyces. Ann. N. Y. Acad. Sci., 60, 136-151. JENSEN, H. L. 1931 Contribution to our knowledge of the Actinomycetales. II. The definition and ...
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ژورنال
عنوان ژورنال: Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
سال: 1971
ISSN: 0015-6426,1882-1006
DOI: 10.3358/shokueishi.12.408