Abstract：
:Physiological aspects of the response of Listeria monocytogenes to acidic conditions and effect of glucose availability were studied by fluorescence ratio-imaging microscopy (FRIM) as compared with traditional viable counts. Three types of experiments were conducted: (i) static with measurements of intracellular pH (pHi) at extracellular pH (pHo) values ranging from pH 3.0 to 6.0 at 0.5 pH unit intervals; (ii) kinetic with monitoring of bacterial responses to changes in the pHo from the value of 6.0 to 4.0 or 3.0; (iii) survival experiments studying bacterial recovery in response to a shift to favourable conditions after a treatment at low pH. All the experiments were performed at three levels of glucose in the medium (0, 1, and 10 mM). Both survival and pHi were greatly affected by pHo and glucose availability with the highest values for CFU and pHi at highest glucose concentration and pHo values in the medium in all trials. A high correlation (R2 = 0.995) between pHi and CFU counts was observed. The pH gradient started to collapse at pHo 4 and below for trials with glucose in the medium and at pHo 5.5 and below without glucose. A recovery step was proposed after the apparently lethal treatment to assess cell viability by FRIM.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Shabala L,Budde B,Ross T,Siegumfeldt H,McMeekin Tdoi
10.1016/s0168-1605(01)00740-1subject
Has Abstractpub_date
2002-05-05 00:00:00pages
89-97issue
1-2eissn
0168-1605issn
1879-3460pii
S0168-1605(01)00740-1journal_volume
75pub_type
杂志文章abstract：:A study was done to determine if a free-living, bacterivorous nematode, Caenorhabditis elegans, migrates to bovine manure, turkey manure, composted bovine manure, composted turkey manure, and manure-amended soil inoculated with Salmonella Newport. Movement of the worm to lettuce, strawberries, and carrots was also stu...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2005.05.011
更新日期：2006-01-15 00:00:00
abstract：:One of the stress conditions that can affect Saccharomyces cerevisiae cells during their growth is osmotic stress. Under particular environments (for instance, during the production of alcoholic beverages) yeasts have to cope with osmotic stress caused by high sugar concentrations. Although the molecular changes and p...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2010.12.023
更新日期：2011-01-31 00:00:00
abstract：:Unlike most other bacteria, many Listeria strains do not grow well in the minimal media described so far in the literature. Among the minimal media tested, a chemically defined medium modified from that of Premaratne and co-workers was found to support the best growth of Listeria spp. The promoting effect was due to t...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(96)01205-6
更新日期：1997-03-18 00:00:00
abstract：:The heavy use or abuse of antimicrobials in food animals has caused an increase in antimicrobial resistance in enterococci of animal origin, which could get transmitted to those of human origin via the food chain. Since duck meat consumption has been on the rise in Korea, we conducted this study to provide information...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2019.01.002
更新日期：2019-03-16 00:00:00
abstract：:A commercial process for ground meat production, from the collection of meat plant trimmings to the retailing of consumer packs of ground beef, was examined. The selected process compiled with current concepts of Good Manufacturing Practice. During storage for up to 18 days before grinding, most trimming developed a f...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/0168-1605(93)90154-9
更新日期：1993-06-01 00:00:00
abstract：:Reconstituted infant formula has been implicated in outbreaks of Enterobacter sakazakii infections, causing high mortality and serious sequelae. Current prevention methods appear to be insufficient to ensure that such foods are free of E. sakazakii. In this study, the usefulness of bacteriophages for biocontrol of E. ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2006.10.029
更新日期：2007-04-10 00:00:00
abstract：:During the past six years, new species of the genus Listeria have been isolated from foods and other environmental niches worldwide. The Standard method EN ISO 11290-1 that is currently under revision will include in its scope all Listeria species in addition to L. monocytogenes. The objective of this project was to e...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2016.09.028
更新日期：2016-12-05 00:00:00
abstract：:Shigella causes foodborne gastrointestinal illness; however, little information is available on its ability to grow in foods. Commercially available sterile foods (UHT milk, beef broth, chicken broth, vegetable broth, meats, vegetables) were inoculated with S. flexneri 5348 and incubated at 12, 15, 19, 28 or 37 degree...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/0168-1605(96)01109-9
更新日期：1996-09-01 00:00:00
abstract：:The Bacillus counts in white and wholemeal wheat loaves produced without preservatives or sour dough were consistently 10(6) cfu/g after two days of storage at ambient summer temperatures (25-30 degree C). Identified species were B. subtilis (70%), B. licheniformis (24%), B. pumilus (2%) and B. cereus (2%). The domina...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/0168-1605(94)00147-x
更新日期：1995-08-01 00:00:00
abstract：:A strain of marine Bacillus megaterium isolated from the Yellow Sea of East China was evaluated for its activity in reducing postharvest decay of peanut kernels caused by Aspergillus flavus in in vitro and in vivo tests. The results showed that the concentrations of antagonist had a significant effect on biocontrol ef...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2010.01.036
更新日期：2010-04-30 00:00:00
abstract：:Improved methods to detect microorganisms and their toxins introduced during the last decade involve among others recombinant DNA techniques and various immuno-assays such as the enzyme-linked immunosorbent assay and the latex agglutination. Immuno-assays are based on a quantitative reaction of an antigen (bacterial m...
journal_title：International journal of food microbiology
pub_type： 杂志文章,评审
doi：10.1016/0168-1605(91)90050-y
更新日期：1991-01-01 00:00:00
abstract：:Aspergillus flavus is the predominant species that produce aflatoxins in stored peanuts under favourable conditions. This study aimed to describe the growth and aflatoxin production by two A. flavus strains isolated from imported raw peanuts and to model the effects of temperature and aw on their colony growth rate as...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2020.108836
更新日期：2020-12-16 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2015.10.020
更新日期：2016-01-18 00:00:00
abstract：:The epidemiology of Q-fever in Switzerland is largely unknown. For this reason, a screening programme for the presence of Coxiella burnetii in bulk milk samples from cows, sheep and goats and in shell eggs produced in and imported into Switzerland was conducted. In total, 17 of 359 (4.7%) of analysed bovine milk sampl...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2007.03.001
更新日期：2007-05-30 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2020.108887
更新日期：2020-12-16 00:00:00
abstract：:The lactoperoxidase system (LPS) and monolaurin (ML) are potential natural antimicrobial agents for use in foods. The LPS is considered to have greatest activity against Gram-negative bacteria while ML is usually considered to have greatest activity against Gram-positive bacteria. An LPS-ML combination system (utilizi...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(01)00698-5
更新日期：2002-02-25 00:00:00
abstract：:Forty-three South African Torulaspora delbrueckii yeast isolates from the ARC Infruitec-Nietvoorbij yeast culture collection, the T. delbrueckii type strain (CBS 1146), one reference T. delbrueckii strain (CBS 4663), two T. delbrueckii strains isolated from commercial yeast blends (Viniflora® Harmony.nsac and Viniflor...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2013.02.011
更新日期：2013-05-15 00:00:00
abstract：:Histamine fish poisoning is common and due to toxic concentrations of histamine often produced by Gram-negative bacteria in fin-fish products with a high content of the free amino acid histidine. The genus Morganella includes two species previously reported to cause incidents of histamine fish poisoning. Morganella mo...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2015.03.005
更新日期：2015-06-16 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2014.07.025
更新日期：2014-10-01 00:00:00
abstract：:Salmonella is a major cause of human foodborne illnesses worldwide; however, little is known about its occurrence and genomic characteristics in food sources in many developing countries. This study investigates the occurrence, serotypes distribution, antimicrobial resistance, and multilocus sequence types (ST) of Sal...
journal_title：International journal of food microbiology
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2008.09.007
更新日期：2008-12-10 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2020.108932
更新日期：2021-01-16 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(01)00431-7
更新日期：2001-05-10 00:00:00
abstract：:Food spoilage is often caused by microorganisms. The predominant spoilage microorganisms of pasteurized, chilled ready-to-eat (RTE) mixed rice-vegetable meals stored at 7°C were isolated and determined as Paenibacillus species. These sporeforming psychrotrophic bacteria are well adapted to grow in the starch-rich envi...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2017.04.008
更新日期：2017-07-03 00:00:00
abstract：:Little is known of the microbiology of processed insect products. The present survey analysed a total of n=38 samples of deep-fried and spiced (Acheta domesticus, Locusta migratoria, and Omphisa fuscidentalis), cooked in soy sauce ("tsukudani"; Oxya yezoensis, Vespula flaviceps, and Bombyx mori), dried (A. domesticus,...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2016.11.005
更新日期：2017-02-21 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2008.05.013
更新日期：2008-08-15 00:00:00
abstract：:Faeces were collected from 60 cows at three slaughterhouses situated in southern and central Sweden. The faecal samples were collected during two sampling periods over the year, summer and winter. All samples were analysed for the presence of Clostridium botulinum spores, according to a combined selection and enrichme...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(02)00255-6
更新日期：2003-04-25 00:00:00
abstract：:Elimination of contaminating spores on packaging materials and food-contact surfaces remains a challenge to the food industry. Hydrogen peroxide and chlorine are the most commonly used sanitizers to eliminate these contaminants, and ozone was recommended recently as an alternative. Hence, we compared the sporicidal ac...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(01)00561-x
更新日期：2001-12-30 00:00:00
abstract：:The current taxonomy of probiotic lactic acid bacteria is reviewed with special focus on the genera Lactobacillus, Bifidobacterium and Enterococcus. The physiology and taxonomic position of species and strains of these genera were investigated by phenotypic and genomic methods. In total, 176 strains, including the typ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(98)00049-x
更新日期：1998-05-26 00:00:00
