Cosmetics. Microbiology. Enumeration and detection of aerobic mesophilic bacteria

2006 ◽  
Keyword(s):  
Mesophilic Bacteria

scholarly journals Effect of high-pressure carbon dioxide processing on the inactivation of aerobic mesophilic bacteria and Escherichia coli in human milk

2017 ◽  
Vol 16 (1) ◽  
pp. 122-126 ◽  
Author(s):  
Ana Claudia Berenhauser ◽  
Douglas Soares ◽  
Norton Komora ◽  
Juliano De Dea Lindner ◽  
Elane Schwinden Prudêncio ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Carbon Dioxide ◽  
High Pressure ◽  
Human Milk ◽  
Mesophilic Bacteria

Factors Influencing the Growth of Salmonella during Sprouting of Naturally Contaminated Alfalfa Seeds

2008 ◽  
Vol 71 (5) ◽  
pp. 888-896 ◽  
Author(s):  
TONG-JEN FU ◽  
KARL F. REINEKE ◽  
STUART CHIRTEL ◽  
OLIF M. VANPELT
Keyword(s):  
Irrigation Water ◽  
Effect Of Temperature ◽  
Irrigation Frequency ◽  
Mesophilic Bacteria ◽  
Factors Influencing ◽  
Alfalfa Seeds ◽  
At Home

In this study, the factors that affect Salmonella growth during sprouting of naturally contaminated alfalfa seeds associated with two previous outbreaks of salmonellosis were examined. A minidrum sprouter equipped with automatic irrigation and rotation systems was built to allow sprouting to be conducted under conditions similar to those used commercially. The growth of Salmonella during sprouting in the minidrum was compared with that observed in sprouts grown in glass jars under conditions commonly used at home. The level of Salmonella increased by as much as 4 log units after 48 h of sprouting in jars but remained constant during the entire sprouting period in the minidrum. The effect of temperature and irrigation frequency on Salmonella growth was examined. Increasing the sprouting temperature from 20 to 30°C increased the Salmonella counts by as much as 2 log units on sprouts grown both in the minidrum and in the glass jars. Decreasing the irrigation frequency from every 20 min to every 2 h during sprouting in the minidrum or from every 4 h to every 24 h during sprouting in the glass jars resulted in an approximately 2-log increase in Salmonella counts. The levels of total aerobic mesophilic bacteria, coliforms, and Salmonella in spent irrigation water closely reflected those found in sprouts, confirming that monitoring of spent irrigation water is a good way to monitor pathogen levels during sprouting.

scholarly journals Аналіз мікробної контамінації туш свиней в процесі забою та первинної обробки

2017 ◽  
Vol 19 (77) ◽  
pp. 194-199
Author(s):  
V.B. Kusturov ◽  
V.V. Kasyanchuk ◽  
A.M. Bergievich
Keyword(s):  
Microbiological Analysis ◽  
E Coli ◽  
Mesophilic Bacteria ◽  
Microbiological Criteria ◽  
Important Pathway ◽  
Control Procedures ◽  
Permissible Levels ◽  
Standard Values ◽  
Animal Feeding ◽  
High Level

The article presents the results of studies on the еxploring of microbial contamination of pigs' carcasses in the pork slaughter and primary processing with microorganisms such as general mesophilic bacteria, Enterobacteriaceae coliforms and E.coli. The carcass surfaces were examined in six technological operations: after bleeding (1) after scalding and removing bristles and hair (2) after singeing and polishing (3); аfter the nutration (4); аt the final point after a veterinary examination (5); аfter cooling down to a temperature of 4–5 °C (6). Sampling swabs was carried out during 2015–2016 years, 530 samples were selected from 260 carcasses accordance with ISO Standard 17604 Microbiology of food and animal feeding stuffs-Carcass sampling for microbiological analysis. Swabs sampling from carcass sites taken from thigh and outer and inner surfaces of the chest and abdominal wall. It was found that the high level of contamination of surfaces carcasses with general mesophilic bacteria, Enterobacteriaceae. They were exceeded after bleeding the microbiological criteria an average of 2.2–2.4 Log CFU/cm2 and 2.5-2.7 Log CFU/cm2, respectively. Each subsequent technological operation reduced the level of contamination of carcass surfaces: the amount of general mesophilic bacteria, Enterobacteriaceae after scalding, removing bristles and hair on the carcass surface, significantly decreased compared to levels that were after bleeding, but were above the standard values by an average of 0.7 Log CFU/Cm2 and by 0.35 Log CFU/cm2, respectively. The number of coliform forms and E. coli on the carcass surface after singeing and polishing was less than after bleeding by an average of 1.8 Log CFU/cm2 and 1.23 Log CFU/cm2, respectively. The intestinal tract is also the an important pathway for contamination of pigs' carcasses. Enterobacteriaceae and E. coli testing demonstrate the effectiveness of slaughter process control procedures and is the indicator for fecal contamination. After cooling of the carcasses, on their surfaces the amount of microorganisms studied was within the permissible levels.

Evaluation of a deep-sea mesophilic bacteria exopolysaccharides in removal of low concentration Pb(II) from aqueous medium

2011 ◽  
Vol 28 (1-3) ◽  
pp. 174-182
Author(s):  
Yan Qie ◽  
Jing Wang ◽  
Weizhi Zhou ◽  
Baoyu Gao ◽  
Yuzhong Zhang
Keyword(s):  
Aqueous Medium ◽  
Deep Sea ◽  
Low Concentration ◽  
Mesophilic Bacteria

Prevalence of antibiotic-resistant Escherichia coli isolated from urban and agricultural streams in Canterbury, New Zealand

2019 ◽  
Vol 366 (8) ◽  
Author(s):  
Sophie Van Hamelsveld ◽  
Muyiwa E Adewale ◽  
Brigitta Kurenbach ◽  
William Godsoe ◽  
Jon S Harding ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
New Zealand ◽  
Pathogenic Bacteria ◽  
Freshwater Ecosystems ◽  
Urban Setting ◽  
Antibiotic Resistant ◽  
E Coli ◽  
Mesophilic Bacteria ◽  
Resistant Strains ◽  
Population Counts

Abstract Baseline studies are needed to identify environmental reservoirs of non-pathogenic but associating microbiota or pathogenic bacteria that are resistant to antibiotics and to inform safe use of freshwater ecosystems in urban and agricultural settings. Mesophilic bacteria and Escherichia coli were quantified and isolated from water and sediments of two rivers, one in an urban and one in an agricultural area near Christchurch, New Zealand. Resistance of E. coli to one or more of nine different antibiotics was determined. Additionally, selected strains were tested for conjugative transfer of resistances. Despite having similar concentrations of mesophilic bacteria and E. coli, the rivers differed in numbers of antibiotic-resistant E. coli isolates. Fully antibiotic-susceptible and -resistant strains coexist in the two freshwater ecosystems. This study was the first phase of antibiotic resistance profiling in an urban setting and an intensifying dairy agroecosystem. Antibiotic-resistant E. coli may pose different ingestion and contact risks than do susceptible E. coli. This difference cannot be seen in population counts alone. This is an important finding for human health assessments of freshwater systems, particularly where recreational uses occur downstream.

scholarly journals The Effect of Cantharellus Cibarius Addition on Quality Characteristics of Frankfurter during Refrigerated Storage

Foods ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 635 ◽  
Author(s):  
Sasa Novakovic ◽  
Ilija Djekic ◽  
Anita Klaus ◽  
Jovana Vunduk ◽  
Vesna Djordjevic ◽  
...  
Keyword(s):  
Shelf Life ◽  
Antimicrobial Properties ◽  
Quality Characteristics ◽  
Control Group ◽  
Refrigerated Storage ◽  
Mesophilic Bacteria ◽  
Chilled Storage ◽  
Negative Effect ◽  
Pork Sausages ◽  
Microbiological Properties

The antioxidant and antimicrobial properties of Cantharellus cibarius decoction and the effect of mushroom addition on the physicochemical and microbiological properties of frankfurters during refrigerated storage were studied. Mushroom addition significantly reduced (p < 0.05) the formation of total aerobic mesophilic bacteria during storage. Regarding the texture, there was no negative effect in frankfurters with the mushroom added, compared to the control group of sausages. Generally, C. cibarius can be used as a natural ingredient in order to prevent the growth of microorganisms in cooked pork sausages, causing an extension in shelf life during chilled storage.

scholarly journals Airborne Listeria spp. in the red meat processing industry

2011 ◽  
Vol 29 (No. 4) ◽  
pp. 441-447 ◽  
Author(s):  
M. Dobeic ◽  
E. Kenda ◽  
J. Mičunovič ◽  
I. Zdovc
Keyword(s):  
Red Meat ◽  
Positive Case ◽  
Airborne Bacteria ◽  
Meat Processing ◽  
Processing Industry ◽  
Air Samples ◽  
Mesophilic Bacteria ◽  
Processing Plants ◽  
Carcass Contamination ◽  
Settling Rates

The aim of this study was to determine the potential presence of the airborne Listeria spp. and its correlation with the aerobic mesophilic bacteria and Listeria carcass contamination in three red meat slaughtering and three processing plants. Airborne L. seeligeri and L. innocua were determined using 8 (5.06%, n = 158) air samples taken on the locations characteristic for aerosol generating and in a chilly environment. The positive airborne samples of Listeria spp. were in an insignificant (P &gt; 0.05) relation with the highest airborne bacteria counts. On the carcass, only 1 positive case (0.69%, n = 144) of L. innocua was determined, presumably owing to the low airborne Listeria counts and its unpredictable settling rates. In addition, insignificant (P &gt; 0.05) influences of air moisture and airflow on the airborne Listeria were found. Nevertheles, the methods currently used to determine the airborne Listeria and its relationships to aerosol viable mesophilic bacteria and carcass contamination need to be reconsidered in future investigations.

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