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Showing 1 to 20 of 27 for “"psychrotrophic"”.
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Psychrophilic and psychrotrophic Clostridium spp. associated with meat spoilage
Twenty two isolates of psychrophilic and psychrotrophic Clostridium spp. associated with ‘blown pack’ spoilage of vacuum-packed meats were studied with respect to their identification, differentiation and taxonomy, as well as spoilage aetiology. The aetiological study was conducted to establish …
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Inhibition of Psychrotrophic Bacterial Growth in Refrigerated Milk by Addition of Carbon Dioxide
… of growth at refrigeration temperatures, termed psychrotrophic bacteria, are present as normal contaminants in raw milk supplies. For purposes of clarity, psychrotrophic microorganisms have been defined as microorganisms capable of growth at 7°C or below regardless of their optimum growth …
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Identification and characterization of a psychrotrophic Clostridium sp. isolated from spoiled pasteurized crabmeat
… determined for the heat tolerant organisms. A psychrotrophic Clostridium sp. was found in all cans tested from a Maryland processor, Processor B. This processor only had spoilage in machine picked meat pasteurized after hurricane Hugo. Spoilage was seen in cans which had received a F 16/185 of …
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The Effectiveness of Potassium Lactate and Lactic Acid Against Campylobacter Species and Psychrotrophic Bacteria
… and lactic acid to control Campylobacter sp. and psychrotrophic bacteria on chicken. The objectives of the two studies conducted were to determine the optimal combination of potassium lactate and lactic acid to inhibit Campylobacter sp. in a challenge study and to inhibit naturally occurring …
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Growth and Proteolytic Activity of Selected Psychrotrophic Bacteria in Whole Milk and Whole Milk Retentate
… and milk products is selective for the growth of psychrotrophic bacteria (5). Growth of psychrotrophic bacteria in these products is of major concern because most of these species produce extra-cellular enzymes, such as proteases and lipases, many of which are heat stable and even survive …
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Assessment of dairy product quality by selective incubation and rapid techniques
… their ability to allow growth of gram-negative psychrotrophic bacteria while inhibiting growth of gram-positive organisms. Crystal violet, benzalkonium chloride, a mixture of crystal violet and benzalkonium chloride, and alkylaryl sulfonate were tested. These were incubated with milk samples …
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Microbial properties of color-modified turkey
… (CMT) stored at 3°C were analyzed for aerobic, psychrotrophic, and coliform bacterial counts. Aerobic and psychrotrophic numbers also were estimated in raw tissues held at -20°C. Cooked FUT and CMT were inoculated with two strain composites of either Salmonella or Listeria monocytogenes and …
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Modified atmosphere packaging of ground turkey thigh meat
… oxidative rancidity. Microbial analysis included psychrotrophic, lactic acid, and anaerobic bacteria enumerations, pH determinations were conducted to evaluate the effects of each treatment on the meat. Instrumentation color analysis CIE L* a* b* values were determined to measure color changes. …
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Use of modified atmosphere technology to maintain quality of direct-set cottage cheese
… Shelf-life is shortened when aerobic, psychrotrophic microorganisms grow at refrigeration temperatures, producing changes which are undesirable. Previous studies have demonstrated that modified atmosphere packaging (MAP) is able to maintain cottage cheese quality and extend shelf-life …
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Screening for novel cold-adapted nitrile hydratases in Antarctic metagenornic libraries
… novel cold-adapted NHase from psychrophilic and psychrotrophic bacteria. The identification of a cold-adapted NHase is of interest for its potential use in chemical and pharmaceutical production. Enzymes isolated from psychrophilic bacteria typically have a high specific activ ity and low thermal …
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GEOTRICHUM GALACTOMYCETUM: INTRASPECIFIC PHYSIOLOGICAL DIVERSITY AND BIOTECHNOLOGICAL POTENTIAL OF SIX STRAINS ISOLATED FROM POULTRY MANURE
… 13-03, and 13-04 were mesophilic, and 13-05 was psychrotrophic. 13-05 was the most distinct of the strains and is thought to possibly be a cryptic species. The two distinct trophic strategies seen were proteolytic or saccharolytic. The results indicated significant physiological variability among …
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ΜΕΛΕΤΗ ΤΗΣ ΠΡΩΤΕΑΣΗΣ ΚΑΙ ΛΙΠΑΣΗΣ ΨΥΧΡΟΤΡΟΦΟΥ ΒΑΚΤΗΡΙΑΚΟΥ ΣΤΕΛΕΧΟΥΣ ΤΟΥ ΝΩΠΟΥ ΓΑΛΑΚΤΟΣ ΚΑΙ ΕΠΙΔΡΑΣΗ ΤΟΥΣ ΣΤΗΝ ΠΟΙΟΤΗΤΑ ΤΟΥ ΤΥΡΙΟΥ ΦΕΤΑ
… THERMAL TREATMENT WAS STUDIED. THE EFFECT OF THE PSYCHROTROPHIC STRAIN (VIA ITS ENZYMES) ON THE QUALITY OF FETA CHEESE PRODUCED BASED ON CONSTITUENT ANALYSIS ANDCOMPARISON WITH CONTROL CHEESE WAS STUDIED. THE MOST IMPORTANT RESULTS ARE AS FOLLOWS: 1. THE BACTERIUM CHARACTERIZED TO BE PSEUDOMANS …
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Promoting oxygenation of vacuum packaged fresh pork using soybean leghemoglobin
… objective color, pigment state, purge or total psychrotrophic aerobic bacterial counts (TPC) throughout the study. Lb treatments TPC were lower (P<0.0l) than nontreated samples at all assessment times.
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Control of pathogenic bacteria in Queso Fresco by using generally recognized as safe ingredients
… lactic acid bacteria, aerobic plate count, and psychrotrophic plate counts. Treated queso fresco samples stored for 4 weeks had similar numbers of lactic acid bacteria, aerobic plate counts, and psychrotrophic plate counts to those of control samples. These results indicated that the treatments …
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The Affects of Explosively and Electrically Generated Hydrodynamic Shock Waves on the Bacterial Flora of Beef and Poultry
… of non-intact or ground meats. The levels of psychrotrophic, lactic, and coliform populations on the surface of whole eye of round steaks submitted to EHSW processing did not differ (P> 0.05) from those of untreated whole eye of round steaks. Parameters expected to influence the nature, …
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Transcriptomic analysis of the response of the lactic acid bacteria Lactococcus piscium for the identification of possible adaptive genes during thermal shock in cold and warm temperatures
Psychrotrophic lactic acid bacteria (LAB) play a versatile role in research, food, farming and medicinal applications, but also play a role as a source of food spoilage. The effects of temperature changes has yet to be studied in depth. In this study, to analyze in a transcriptome level, cold and …
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An evaluation of the effectiveness of FreshCase® technology to extend the shelf life of beef and pork
… the number of days required to reach an aerobic psychrotrophic plate count of 107 log CFU/g, and all treatmes were stored and evaluated until storage life expired. The storage life for beef steaks stored in FreshCase® packages at 4°C was 36 days; and the shelf life for ground beef stored in …
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Análise das condições microbiológicas de queijos minas frescal vendidos em João Pessoa-PB
… specified standards for aerobic mesophilic and psychrotrophic bacteria, total coliforms and fecal coliforms, yeasts and molds, coagulase positive staphylococci, Salmonella sp. The average plate count for frescal, by brand, fluctuated in the range: the mesophilic 1,242,77a the 7,010,57a ; …
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Quality of on-board cryogenically frozen sea scallops (Placopecten Magellanicus)
… had significantly lower cfu/gm for aerobic, psychrotrophic and coliform counts compared to fresh and cryogenically frozen scallops. The 4 hr cryogenically frozen scallop had lower thaw and cook loss which could have a significant economic and nutritional significance. Mechanically frozen …
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