scholarly journals Microbes of Food and Factors Affecting Microbial Growth in Food

2020 ◽  
pp. 1-18
Author(s):  
Deepa I ◽  
Keyword(s):  
Microbial Growth ◽  
Factors Affecting

Organics and its Control in Reclaimed Water

2014 ◽  
Vol 507 ◽  
pp. 752-756
Author(s):  
Chao Xiang ◽  
Ping Xu ◽  
Jing Wang ◽  
Tao Wang ◽  
Ya Jun Zhang
Keyword(s):  
Water Supply ◽  
Indirect Effects ◽  
Microbial Growth ◽  
Treatment Process ◽  
Reclaimed Water ◽  
Limiting Factors ◽  
Supply Network ◽  
Water Supply Network ◽  
Factors Affecting ◽  
Comprehensive Study

Some forms of organic matter existing in the water have direct or indirect effects on microbial growth. By the investigation data over drinking water and reclaimed water, we summarized organic limiting factors that may affect the growth of microorganisms and factors affecting these water qualities in the reclaimed water supply network, such as a variety of treatment process and the residual disinfectants. Through its comprehensive study, we want to make a contribution of opinion to control the growth of microorganisms in reclaimed water supply network.

scholarly journals Lactobacillus fructivorans Spoilage of Tomato Ketchup

1997 ◽  
Vol 60 (5) ◽  
pp. 505-509 ◽  
Author(s):  
K. JOHANNA BJORKROTH ◽  
HANNU J. KORKEALA
Keyword(s):  
Gel Electrophoresis ◽  
Microbial Growth ◽  
Antimicrobial Agents ◽  
Growth And Survival ◽  
Factors Affecting ◽  
Physiological And Biochemical Characteristics ◽  
Gas Formation ◽  
Tomato Ketchup ◽  
Dna Fragment ◽  
Physiological And Biochemical

Spoilage characterized by bulging as a result of gas formation in bottled ketchup was studied, Samples produced microbial growth on MRS and Rogosa selective Lactobacillus agar. Seventy randomly selected isolates typed by using restriction endonuclease (ClaI, EcoRI, HindIII) analysis were found to have identical DNA fragment patterns in gel electrophoresis. The strain was identified as Lactobacillus fructivorans using morphological, physiological and biochemical characteristics, combined with the information obtained from ribotyping. Factors affecting growth and survival of this L. fructivorans strain in ketchup production were also studied. An L. fructivorans count of 105 CFU/g resulted in spoilage of inoculated ketchup samples. Spoilage occurred only in samples incubated at 15 to 30°C. The L. fructivorans implicated in causing spoilage demonstrated heat resistance with a D value of 1.2 min at 65°C. The strain did not show resistance to alkaline active chloride-containing detergent sanitizer; alkyldimethylbenzylammonium chloride and alkyldimethylethylbenzylammonium chloride-containing sanitizer were also found to be effective antimicrobial agents.

Pineapple Leaf Juice Characterization and Evaluation of Factors Affecting Microbial Growth Inhibition

2021 ◽  
pp. 102158
Author(s):  
Amirah Ya’acob ◽  
Norazwina Zainol ◽  
Putri Nurul Yasmin Mohd Ridza ◽  
Siti Hatijah Mortan ◽  
Kamaliah Abdul Samad
Keyword(s):  
Growth Inhibition ◽  
Microbial Growth ◽  
Factors Affecting ◽  
Microbial Growth Inhibition ◽  
Leaf Juice

scholarly journals Changes in Bacterial Composition of Zucchini Flowers Exposed to Refrigeration Temperatures

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
F. Baruzzi ◽  
M. Cefola ◽  
A. Carito ◽  
S. Vanadia ◽  
N. Calabrese
Keyword(s):  
Growth Kinetics ◽  
Microbial Growth ◽  
Fruits And Vegetables ◽  
Bacterial Composition ◽  
Factors Affecting ◽  
Microbial Growth Kinetics ◽  
Main Factors ◽  
First Time ◽  
Spoilage Microorganisms

Microbial spoilage is one of the main factors affecting the quality of fresh fruits and vegetables, leading to off-flavor, fermented aroma, and tissue decay. The knowledge of microbial growth kinetics is essential for estimating a correct risk assessment associated with consuming raw vegetables and better managing the development of spoilage microorganisms. This study shows, for the first time, that only a part of total microbial community, originally present on fresh harvested female zucchini flowers, was able to adapt itself to refrigerated conditions. Through the study of microbial growth kinetics it was possible to isolate forty-four strains belonging to twenty-two species of the generaAcinetobacter, Arthrobacter, Bacillus, Enterobacter, Erwinia, Klebsiella, Pantoea, Pseudoclavibacter, Pseudomonas, Serratia, Staphylococcus,andWeissella, suggestingEnterobacteriaceaeas potentially responsible for pistil spoilage.

Purine derivatives excretion in sheep urine in relation to metabolizable energy and rumen degradable protein intake

1993 ◽  
Vol 1993 ◽  
pp. 186-186
Author(s):  
F.J. Giráldez ◽  
R. Peláez ◽  
E. Zorita ◽  
C. Valdés
Keyword(s):  
Small Intestine ◽  
Microbial Growth ◽  
Metabolizable Energy ◽  
Purine Derivatives ◽  
Purine Derivative ◽  
Factors Affecting ◽  
Main Factors ◽  
Different Levels ◽  
Sheep Urine ◽  
Degradable Protein

Recently has been shown that allantoin or total purine derivatives excretion in urine are strongly related to the amount of purines reaching the small intestine (Chen et al., 1990; Balcells et al., 1992) and as consequence purine derivative output is propouse to be used as an index of microbial protein flow to small intestine.Because energy and rumen degradable protein supplies are the main factors affecting rumen microbial growth, the effect of changes in rumen degradable protein supplies at different levels of ME intake on urinary excretion of purine derivatives was studied in this work.

scholarly journals Pb(II) Bio-Removal, Viability, and Population Distribution of an Industrial Microbial Consortium: The Effect of Pb(II) and Nutrient Concentrations

2020 ◽  
Vol 12 (6) ◽  
pp. 2511
Author(s):  
Carla Hörstmann ◽  
Hendrik G. Brink ◽  
Evans M.N. Chirwa
Keyword(s):  
Klebsiella Pneumoniae ◽  
Microbial Growth ◽  
Microbial Consortium ◽  
Population Distribution ◽  
Active Species ◽  
Sem Analysis ◽  
Nutrient Concentrations ◽  
Local Alignment ◽  
Factors Affecting ◽  
Search Tool

This study presents the effect of aqueous Pb(II) and nutrient concentrations on the Pb(II)-removal, biomass viability, active species identities, and population distribution of an industrial Pb(II) resistant microbial consortium. The studied consortium has previously shown to be highly effective at precipitating Pb(II) from solution. At all conditions tested (80 and 500 ppm Pb(II), and varying nutrients conditions) it was found that circa 50% of Pb(II) was removed within the first 3 h, with the absence of any visual changes, followed by a slower rate of Pb(II) removal accompanied by the formation of a dark precipitate. The Pb(II) removal was found to be independent of microbial growth, while growth was observed dependent on the concentration of Pb(II), nutrients, and nitrates in the system. SEM analysis indicated viable bacilli embedded in precipitate. These findings indicate that precipitation occurs on the surface of the biomass as opposed to an internal excretion mechanism. BLAST (Basic Local Alignment Search Tool) results indicated Klebsiella pneumoniae as the active species responsible for Pb(II) bioprecipitation for both the 80 and 500 ppm isolated colonies, while a diverse population distribution of organisms was observed for the streak plate analyses. A quicker microbial generation rate was observed than what was expected for Klebsiella pneumoniae, indicating that the overall consortial population contributed to the growth rates observed. This study provided insights into the factors affecting Pb(II) bio-removal and bioprecipitation by the investigated industrially obtained consortium, thereby providing invaluable knowledge required for industrial application.

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