Abstract:
AIMS:The aim of this study was to evaluate the inactivation efficiency of Listeria monocytogenes ATC(L3) C 7644 and Salmonella enterica serovar Typhimurium strain DS88 by combined treatment of hypericin (Hyp)-based photosensitization and high power pulsed light (HPPL). METHODS AND RESULTS:Cells were incubated with Hyp (1 × 10(-5) or 1 × 10(-7) mol l(-1)) in PBS and illuminated with a light λ = 585 nm. For the combined treatment, bacteria were, after photosensitization, exposed to 350 pulses of HPPL (UV light dose = 0·023 J cm(-2)). Fluorescence measurements were performed to evaluate optimal time for cell-Hyp interaction. Results indicate that Hyp tends to bind both Listeria and Salmonella. After photosensitization treatment, Listeria population was reduced 7 log, whereas Salmonella was inactivated just 1 log. Electron photomicrograps of Salmonella and Listeria confirmed that photosensitization induced total collapse of the Listeria cell wall, but not that of Salmonella. After combined photosensitization-HPPL treatment, the population of Listeria was diminished by 7 log and Salmonella by 6·7 log. CONCLUSIONS:Listeria can be effectively inactivated by Hyp-based photosensitization (7 log), whereas Salmonella is more resistant to photosensitization and can be inactivated just by 1 log in vitro. Combined treatment of photosensitization and pulsed light inactivates effectively (6·7-7 log) both the Gram-positive and the more resistant to photosensitization Gram-negative bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY:A new approach to combat Gram-positive and Gram-negative bacteria is proposed, combining photosensitization with high power pulsed light.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Kairyte K,Lapinskas S,Gudelis V,Luksiene Zdoi
10.1111/j.1365-2672.2012.05296.xsubject
Has Abstractpub_date
2012-06-01 00:00:00pages
1144-51issue
6eissn
1364-5072issn
1365-2672journal_volume
112pub_type
杂志文章abstract:AIMS:The effect of five essential oils (oregano, cinnamon, lemongrass, clove and palmarose) on growth rate, zearalenone (ZEA) and deoxynivalenol (DON) production by Fusarium graminearum strains was assessed. METHODS AND RESULTS:The influence of the essential oils was tested on irradiated maize at two concentrations (5...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2004.02212.x
更新日期:2004-01-01 00:00:00
abstract:AIMS:To analyse and compare the effect of selection power for antimicrobial resistance (AMR) in coliforms of two kinds of β-lactams-aminopenicillins; ampicillin (Amp) and cephalosporins; cephalexin (Cpn) and ceftiofur (Cef)-and tetracycline (Tet) using an approach based on a swine faecal microcosmos. METHODS AND RESUL...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.14721
更新日期:2020-11-01 00:00:00
abstract:AIMS:The aim of this work was to measure the dynamic global metabolic activities of the microbial community during ripening of RDO Salers cheese by using a direct molecular approach. METHODS AND RESULTS:A culture-independent approach including PCR, reverse transcriptase PCR (RT-PCR) and single strand conformation poly...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2005.02575.x
更新日期:2005-01-01 00:00:00
abstract:AIMS:Environmental contamination plays an important role in the transmission of infections, especially healthcare-associated infections. Disinfection transiently reduces contamination, but surfaces can rapidly become re-contaminated. Antimicrobial surfaces may partially overcome that limitation. The antimicrobial activ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.12308
更新日期:2013-11-01 00:00:00
abstract:AIMS:To isolate and identify endophytic nitrogen-fixing bacteria in sugarcane growing in Cuba without chemical fertilizers. METHODS AND RESULTS:Two N2-fixing isolates, 9C and T2, were obtained from surface-sterilized stems and roots, respectively, of sugarcane variety ML3-18. Both isolates showed acetylene reduction a...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2004.02329.x
更新日期:2004-01-01 00:00:00
abstract:AIMS:To identify and examine the diversity of predominant lactic acid bacteria (LAB) in koko and koko sour water (KSW) from different Ghanaian production sites with regard to pattern of fermentation (API 50 CHL), genotype, antimicrobial activity, and resistance to low pH and bile salts. METHODS AND RESULTS:In total 21...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2004.02162.x
更新日期:2004-01-01 00:00:00
abstract:AIMS:To evaluate the intraspecific diversity of the fish pathogen Flavobacterium columnare. METHODS AND RESULTS:Genetic variability among Fl. columnare isolates was characterized using restriction fragment length polymorphism analysis of the 16S rDNA gene, intergenic spacer region (ISR) sequencing, and amplified fragm...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2004.02314.x
更新日期:2004-01-01 00:00:00
abstract:AIMS:To offset the negative effects of aeration on bacterial cellulose (BC) production by acetic acid bacteria using enmeshed cellulose microfibrils (CM) on luffa sponge matrices (LSM). METHODS AND RESULTS:The CM were enmeshed on LSM (LSM-CM). The optimal amount of LSM-CM was determined for BC production under aerated...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.13290
更新日期:2016-12-01 00:00:00
abstract::Although there is great scientific and technological interest in examining the physiology and bioenergetics of microorganisms from extreme environments, difficulties encountered in their cultivation and lack of genetic systems hampers the investigation of these issues. As such, we have adapted methods for continuous c...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.1998.tb05290.x
更新日期:1998-12-01 00:00:00
abstract:AIM:To investigate the immunoprotection of three recombinant proteins derived from the Vibrio harveyi outer membrane proteins (OMPs) OmpK, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and their fusion OmpK-GAPDH as vaccine candidates from vibriosis of large yellow croaker (Pseudosciaena crocea). METHODS:The ompK g...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2007.03386.x
更新日期:2007-11-01 00:00:00
abstract:AIMS:To investigate the effect of media composition and agroindustrial residues on bovicin HC5 production by Streptococcus bovis HC5. METHODS AND RESULTS:Batch cultures of S. bovis HC5 were grown in basal medium containing different carbon and nitrogen sources. The activity of cell-free and cell-associated bovicin HC5...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2009.04212.x
更新日期:2009-07-01 00:00:00
abstract:AIMS:To investigate the in vitro antibacterial activity and antifungal mode of action of flocculosin, a cellobiose lipid produced by Pseudozyma flocculosa. METHODS AND RESULTS:When tested against clinical bacterial isolates, the compound was particularly active against Gram-positive bacteria and its effect was not mit...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2009.04280.x
更新日期:2009-09-01 00:00:00
abstract:AIMS:To characterize a bacteriocin-like factor from Bacillus licheniformis 26 L-10/3RA isolated from buffalo rumen. METHODS AND RESULTS:The culture supernatant exhibited the antibacterial activity against a number of indicator organisms in a cut-well agar assay under anaerobic conditions. The inhibitory component was ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2001.01429.x
更新日期:2001-10-01 00:00:00
abstract:AIMS:To compare the production of recombinant cellulase enzymes in two Saccharomyces species so as to ascertain the most suitable heterologous host for the degradation of cellulose-based biomass and its conversion into bioethanol. METHOD AND RESULTS:cDNA copies of genes representing the three major classes of cellulas...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.12494
更新日期:2014-07-01 00:00:00
abstract:AIMS: To develop a novel Vero cell assay that implements a real-time cell electronic sensing (RT-CES) system for the determination of the presence of verotoxin-producing Escherichia coli (VTEC). The assay overcomes the major drawbacks in conventional Vero cell assay, for example, labour-intensive and time-consuming. M...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2012.05321.x
更新日期:2012-08-01 00:00:00
abstract:AIM:The aim of this study was to characterize the microbial community involved in anaerobic degradation of petroleum hydrocarbon under low- and moderate-temperature conditions. METHODS AND RESULTS:Sulfate-reducing enrichment cultures growing on crude oil and p-xylene were established at low and moderate temperatures. ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2010.04886.x
更新日期:2011-01-01 00:00:00
abstract:AIMS:Isolates of Candida valida, Rhodotorula glutinis and Trichosporon asahii from the rhizosphere of sugar beet in Egypt were examined for their ability to colonize roots, to promote plant growth and to protect sugar beet from Rhizoctonia solani AG-2-2 diseases, under glasshouse conditions. METHODS AND RESULTS:Root c...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2003.02043.x
更新日期:2004-01-01 00:00:00
abstract:AIMS:To investigate the effects of the endophyte Bacillus subtilisALB629 on the growth of cacao seedlings at early developmental stage and to evaluate its antimicrobial properties. METHODS AND RESULTS:Germinating cacao seeds were inoculated with ALB629, and seedlings growth was evaluated 30 days later. Significant inc...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.12485
更新日期:2014-06-01 00:00:00
abstract:AIMS:To relate sensory shelf-life of iced whole and gutted squid to bacterial growth and chemical changes. METHODS AND RESULTS:Cooked mantles from whole and gutted individuals were rejected after 10 and 12 days of storage, respectively, due to ammoniacal off-odours. Rate of production of both ammonia and trimethylamin...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2002.01604.x
更新日期:2002-01-01 00:00:00
abstract:AIMS:The goal of this research is to model the effects of two osmotic solutions factors on the reduction of selected microorganisms, and to assess the application in osmotic dehydration process of animal raw materials from the aspect of microbiological safety. METHODS AND RESULTS:Sugar beet molasses and aquatic osmoti...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.13927
更新日期:2018-09-01 00:00:00
abstract:AIMS:To optimize the nutritional and environmental conditions for growth of and poly-beta-hydroxybutyrate (PHB) accumulation in Bacillus mycoides RLJ B-017. METHODS AND RESULTS:An isolate, identified as B. mycoides, was grown on different sources of carbon and nitrogen. Among these, sucrose, beef extract and di-ammoni...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2002.01590.x
更新日期:2002-01-01 00:00:00
abstract:AIMS:To investigate the factors affecting expression and solubilization of Escherichia coli maltodextrin glucosidase in E. coli. METHODS AND RESULTS:Expression level and solubilization of the recombinant E. coli maltodextrin glucosidase was studied in E. coli at different temperatures, in presence of overexpressed Gro...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2007.03519.x
更新日期:2008-01-01 00:00:00
abstract::Twenty-nine Lactococcus lactis isolates from one traditional 24 h-old Pecorino Sardo cheese were characterized phenotypically, technologically and genotypically in order to assess the biodiversity within this wild microbial population. Two DNA-based techniques, plasmid profiling and PFGE, were used for the genetic typ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2000.01109.x
更新日期:2000-08-01 00:00:00
abstract:AIMS:The gut microbiota capable of degrading plant biomass and antinutritional phytometabolites are of immense importance. This study reports isolation and characterization of tannase-producing rumen bacteria that could also degrade euptox A (9-oxo-10,11-dehydroageraphorone) present in Eupatorium adenophorum (Spreng). ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.13563
更新日期:2017-11-01 00:00:00
abstract::The classification of Bacillus thuringiensis strains has been revised and updated based on flagellar antigens which have been in use for many years. Sixty-nine serotypes and 13 sub-antigenic groups have now been identified, giving 82 serovars among the 3500 B. thuringiensis isolates of the IEBC Collection. The number ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.1999.00710.x
更新日期:1999-04-01 00:00:00
abstract:AIMS:To investigate the effect of various single nutrient deficiencies on poly-beta-hydroxybutyrate (PHB) biosynthesis in a methane-utilizing mixed culture (dominant species Methylocystis sp. GB 25 DSM 7674). METHODS AND RESULTS:Poly-beta-hydroxybutyrate accumulation experiments were performed in 7 and 70 l bioreactor...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2008.03831.x
更新日期:2008-10-01 00:00:00
abstract:AIMS:To identify changes in the bacterial community, at the phylum level brought about by varied crop management. METHODS AND RESULTS:Next-generation sequencing methods were used to compare the taxonomic structure of the bacterial community within 24 agricultural soils managed with either organic or conventional metho...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.12822
更新日期:2015-07-01 00:00:00
abstract::The enzymatic activity and viability of Escherichia coli O157:H7 in natural river water was determined by flow cytometry. River water was collected at two sites (an agricultural area and an industrial area) on the Aigawa River (Osaka, Japan). To facilitate estimation of the physiology of E. coli O157 in natural river ...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2000.00960.x
更新日期:2000-02-01 00:00:00
abstract:AIMS:Monitoring for Salmonella in slaughter pigs is important to enable targeted control measures to be applied on problem farms and at the abattoir. The aim of this study was to determine whether pooled serum and meat juice could be used to identify finishing pig herds with a high prevalence of infection. METHODS AND...
journal_title:Journal of applied microbiology
pub_type: 杂志文章,多中心研究
doi:10.1046/j.1365-2672.2003.02070.x
更新日期:2003-01-01 00:00:00
abstract:AIMS:To identify proteins regulating antimicrobial peptide (AMP) resistance in Vibrio parahaemolyticus using membrane subproteome analysis. METHODS AND RESULTS:Three synthetic AMPs (Q4, Q6 and H1) and a natural one from fish (pleurocidin) were used for selection of AMP-resistant strains. Differential expression patter...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2009.04544.x
更新日期:2010-04-01 00:00:00