An assessment of the microbial quality of “döner kebab” during cold storage: Effects of different packaging methods and microwave heating before consumption

2018 ◽  
Vol 39 (1) ◽  
Author(s):  
Güliz Haskaraca ◽  
Nuray Kolsarici
Keyword(s):  
Microwave Heating ◽  
Cold Storage ◽  
Microbial Quality ◽  
Storage Effects

Comparison of Different Peptidase Substrates for Evaluation of Microbial Quality of Aerobically Stored Meats

2000 ◽  
Vol 63 (10) ◽  
pp. 1447-1449 ◽  
Author(s):  
L. STEPANIAK
Keyword(s):  
Enzymatic Activity ◽  
Correlation Coefficient ◽  
Cold Storage ◽  
Microbial Quality ◽  
Microbial Cells ◽  
Clear Advantage ◽  
Yellow Color ◽  
Meat Samples

Different aminopeptidase and endopeptidase substrates were assessed for the detection of enzymatic activity of microorganisms collected from the surface of aerobically cold-stored pork and beef. The most sensitive substrates were fluorogenic Ala-7-amino-4-methylcoumarin (Ala-AMC) or Leu-AMC and colorogenic Ala-p-nitroanilide (Ala-pNA). Activity on natural oligopeptides, e.g., bradykinin or αs1 casein fragment 1 to 23, was very low. The correlation coefficient (r) between log surface counts of 66 meat samples and log fluorescence or absorbance after incubation of surface microbial cells for 2 h with Ala-AMC, Leu-AMC, and Ala-pNA was 0.89, 0.83, and 0.82, respectively. A distinct yellow color was obtained with Ala-pNA when the surface count was ∼106 CFU/cm2. Although correlation and sensitivity was better, no clear advantage is obtained with the use of the fluorogenic Ala-AMC or Leu-AMC instead of Ala-pNA, a substrate proposed by Alvarado et al. (J. Food Sci. 57:1330, 1992) for rapidly assessing the microbial quality of refrigerated meat. The correlation coefficient (r) between time of cold storage and surface count was 0.69.

Cold storage effects on flesh quality of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) fed diets containing different vegetable oils

2016 ◽  
Vol 32 (3) ◽  
pp. 569-576 ◽  
Author(s):  
M. Yildiz ◽  
I. Kose ◽  
G. Issa ◽  
T. Kahraman ◽  
E. Guven ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Vegetable Oils ◽  
Cold Storage ◽  
Flesh Quality ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Storage Effects

MATURITY INDEX AND COLD STORAGE EFFECTS ON POSTHARVEST QUALITY OF 'PACKHAM'S TRIUMPH' AND 'ROCHA' PEARS

2012 ◽  
pp. 865-870 ◽  
Author(s):  
L.R. Antoniolli ◽  
A.B.C. Czermainski
Keyword(s):  
Cold Storage ◽  
Maturity Index ◽  
Postharvest Quality ◽  
Storage Effects

Effects of water dipping of whole fruit on the microbial quality of minimally processed pomegranate (Punica granatum L.) arils during cold storage

2015 ◽  
Vol 5 (1) ◽  
pp. 1 ◽  
Author(s):  
Lizanne O' ◽  
N.A. Grady ◽  
Gunnar Oliver Sigge ◽  
Oluwafemi James Caleb ◽  
Umezuruike Linus Opara
Keyword(s):  
Cold Storage ◽  
Punica Granatum ◽  
Microbial Quality ◽  
Minimally Processed ◽  
Punica Granatum L

Cold storage effects on maternal and progeny quality of Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae)

2008 ◽  
Vol 46 (2) ◽  
pp. 122-132 ◽  
Author(s):  
Wen-Long Chen ◽  
Roger A. Leopold ◽  
Marion O. Harris
Keyword(s):  
Cold Storage ◽  
Storage Effects ◽  
Gonatocerus Ashmeadi

Comparison of Indicators of Microbial Quality of Meat during Aerobic Cold Storage

2003 ◽  
Vol 66 (9) ◽  
pp. 1733-1737 ◽  
Author(s):  
JOON-SEOK BYUN ◽  
JOONG SEOK MIN ◽  
IL SUK KIM ◽  
JOONG-WAN KIM ◽  
MYUNG-SUB CHUNG ◽  
...  
Keyword(s):  
Cold Storage ◽  
Correlation Coefficients ◽  
Thiobarbituric Acid ◽  
Microbial Quality ◽  
Aerobic Conditions ◽  
Bacterial Counts ◽  
Chilled Storage ◽  
Basic Nitrogen ◽  
Plate Counts

This study was undertaken to evaluate various indicators for the prediction of the microbial quality of pork and beef loins during cold storage at 0 and 4°C under aerobic conditions. Fresh loins of beef and pork were packaged aerobically and stored at 0 ± 1°C for 22 days and at 4 ± 1°C for 12 days or until the total plate counts (TPCs) for these loins exceeded 108 CFU/ml. During storage, samples were taken periodically for the measurement of TPCs, psychrotrophic bacterial counts, amine contents, volatile basic nitrogen (VBN) values, thiobarbituric acid values, d-glucose contents, l-lactate contents, pH, and electrical conductivity. Correlation coefficients were ca. 0.90 for all indicators except pH and conductivity. However, VBN and d-glucose contents showed the best correlation with bacterial counts at both temperatures for both beef and pork. Therefore, VBN and d-glucose could potentially be used as indicators in predicting the microbial quality of beef and pork during chilled storage under aerobic conditions.

A Comparative Study of the Quality of Strawberry Purée Preserved by Continuous Microwave Heating and Conventional Thermal Pasteurization During Long-Term Cold Storage

2016 ◽  
Vol 9 (7) ◽  
pp. 1100-1112 ◽  
Author(s):  
Krystian Marszałek ◽  
Łukasz Woźniak ◽  
Sylwia Skąpska ◽  
Marta Mitek
Keyword(s):  
Comparative Study ◽  
Microwave Heating ◽  
Cold Storage ◽  
Thermal Pasteurization

scholarly journals A Study on the Effects of Probiotic Yogurt on the Microbial Quality of Fresh Chicken Meat during Cold Storage

2009 ◽  
Vol 29 (2) ◽  
pp. 269-277 ◽  
Author(s):  
Kook-Kyung Kim ◽  
Seok-Jin Eom ◽  
Jung-Hyun Im ◽  
Kyung-Min Lee ◽  
Seok-Jin Yoo ◽  
...  
Keyword(s):  
Cold Storage ◽  
Chicken Meat ◽  
Microbial Quality ◽  
Probiotic Yogurt

Microbial Quality of Human Wastes and Treatment Plant Effluent

1986 ◽  
Vol 18 (7-8) ◽  
pp. 257-265 ◽  
Author(s):  
K. Kawamura ◽  
M. Kaneko
Keyword(s):  
Staphylococcus Aureus ◽  
Vibrio Cholerae ◽  
Treatment Plant ◽  
Microbial Quality ◽  
Chlorination Process ◽  
Fecal Streptococci ◽  
Human Wastes ◽  
Micro Organisms ◽  
Spore Forming Bacteria

In order to evaluate the microbial quality of human wastes and effluents from treatment processes, the microbial flora of samples was examined. Total coliforms, fecal coliforms and fecal streptococci were used as indicator micro-organisms, and Vibrio cholerae non O-1, Salmonella, Staphylococcus aureus and Welchii (Clostridium perfrigens) were selected as pathogenic organisms. Salmonella was detected in only the water samples from the night soil treatment plant, while Staphylococcus aureus was detected in the night soil and the samples from the night soil purification tanks. Vibrio cholerae non 0-1 was not detected in any samples, but Welchii existed in almost all samples. Generally, the density levels and distribution patterns of the indicator micro-organisms were similar to those in the raw wastewaters. The microbial flora was not changed remarkably after the primary sedimentation process and the biological treatment process. After the chlorination process, total colonies, spore-forming bacteria, Welchii, moulds and fecal streptococci could survive, and spore-forming bacteria formed the majority of the total colonies in the well-chlorinated effluents. Welchii at the level of 103/100 ml can be used as the indicator micro-organism to ensure a sanitary safe discharge, because it can survive at the level of 103−104/100 ml even if other indicators and pathogenic micro-organisms are inactivated completely by the chlorination process.

Impact of gelatin nanogel coating containing thymol and nisin on the microbial quality of rainbow trout fillets and the inoculated Listeria monocytogenes

2021 ◽  
Author(s):  
Fatemeh Mohajer ◽  
Saeid Khanzadi ◽  
Kobra Keykhosravy ◽  
Seyyed Mohammad Ali Noori ◽  
Mohammad Azizzadeh ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Listeria Monocytogenes ◽  
Microbial Quality
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