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Wyszukujesz frazę "pathogens," wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Bacteriological profile of cut fruits sold in Calabar Metropolis
Autorzy:
Edeghor, U.
John, G. E.
Origbu, C.
Powiązania:
https://bibliotekanauki.pl/articles/1076796.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Calabar Metropolis
Foodborne illness
Fruits
Microbial contaminants
Pathogens
Opis:
The increase in cases of food borne illnesses related to street vended fruit salad in developing countries is of serious public health concern. This study was, therefore, conducted on street-vended fruit salad, to determine their microbial quality. A total of twenty (20) fruit samples, comprising five each of fresh Apple (Malus domestica Borkh), Pineapple (Ananas comosus L.), Pawpaw (Carica papaya) and Watermelon (Citrullus lanatus) were collected from 3 different locations (Watt, Marian and Goldie) in Calabar and were evaluated by way of standard plate techniques, for microbial contaminants. The specific microbial genera were enumerated on appropriate selective media and identified using standard identification parameters with the aid of identification and taxonomic manuals. The results revealed that the mean total bacterial counts of all the fruit samples ranged from 1.07 × 103 to 3.4 × 103CFU/g, whereas, the mean total coliform counts ranged from 0.9 × 103 to 2.05 × 103 CFU/g, respectively. The differences in the mean total heterotrophic counts and coliform counts recorded for the fruits collected from the respective food vendors was statistically insignificant (P>0.01). Bacteria isolated include Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella sp, Shigella sp, Proteus mirabilis and Escherichia coli. The presence of coliform bacteria and other microbial contaminants in numbers exceeding the recommended microbiological standards is a reflection of unwholesome product, hence the need for proper microbiological safety analysis of fruit salad prepared for human consumption. Therefore, consumer’s awareness on the dangers of consuming pathogen contaminated foods and the need to insist on properly processed/stored sliced produce, needs to be re-awakened.
Źródło:
World News of Natural Sciences; 2019, 23; 43-55
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enteropathogens survivor load in digestate from Two-phase mesophilic anaerobic digestion and Validation of hygienization regime
Autorzy:
Muhondwa, Jacob P.
Powiązania:
https://bibliotekanauki.pl/articles/1075626.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biotreatment Facility
Contamination
Enteropathogens
Escherichia coli
Hygienization
Mesophilic Anaerobic Digestion
Pathogens
Salmonella Senftenberg
Solanum tuberosum
biowaste
Opis:
The survival of potentially infectious enteropathogens in digestate from two-phase mesophilic anaerobic digestion (Two-phase MAD) technique raises concern on handling and application of the resulting digestate as far as hunan health and environment safety is concerned. In this research, temperature validation and hygienization potential of Two-phase MAD operated as a completely stirred-tank reactor with semi-continuous feeding was investigated. High enteropathogens survival up to 6.4 log E. coli and 6.1 log Salmonella Senftenberg was observed in digestate resulted from anaerobic digestion of potato peels artificially spiked with 8.7 log Salmonella Senftenberg and 8.8log E. coli simulating extra high pathogens contamination in biowaste used as feedstock. Even though an average decrease in pH by 2.3 units from the original value of 6.5 observed in hydrolysis reactor created unfavorable environment on the survival of both E. coli and Salmonella Senftenberg causing a 3.6 log and 3.8 log reduction, yet the alkaline condition in the methanation reactor pH 7.7 boosted the surviving rate by 1.3 log in E. coli and 1.2 log in Salmonella Senftenberg confirming the inefficiency of Two-phase MAD set-up at providing a completely hygienized digestate. This renders the biosafety of the resulting final digestate questionable and limit the possibility of farmapplication for nutrients recycling due to the involving environmental threat and health risks in case the digestate is to be used. Temperature-time combination at 65 °C for 30min was confirmed sufficient at completely elimination of E. coli and effecting >1 log cycle die-off equivalent to 90% die-off in Salmonella Senftenberg with z-Value of 11 ºC validating the temperature-time regime of 70 ºC for 60min proposed in European Commissions Regulation (EC) No. 208/2006.
Źródło:
World Scientific News; 2019, 125; 94-113
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibiotic Susceptibility Test of Bacteria Isolated From Fruit Juices Sold in Cafes and Restaurants of Debre-Markos Town, North Western Ethiopia
Autorzy:
Geta, Kindu
Kebede, Ameha
Chemedissa, Meseret
Powiązania:
https://bibliotekanauki.pl/articles/1076786.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antibiotics
Antimicrobial resistance
B. cereus
Debre Markos
E. coli
Enterobacter
Fruit juices
Klebsiella
Pathogens
Ps. aeruginosa
Salmonella
Shigella
Staphylococcus aureus
Opis:
The prevalence of antimicrobial resistance among food pathogens has increased during recent decades. In this work, pathogenic bacteria such as Staphylococcus aureus, Salmonella spp., Shigella spp., and E. coli were isolated following standard methods. The bacterial isolates were then tested for their sensitivity to common antibiotics using the disc diffusion method on Mueller-Hinton Agar. All of the pathogenic bacteria were found to be resistant to erythromycin and almost all were sensitive to penicillin.
Źródło:
World News of Natural Sciences; 2019, 24; 365-371
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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