Bangladesh journal of microbiology最新文献

{"title":"Isolation of Multidrug Resistant Bacteria from Aspirates of Cancer Patients","authors":"S. Ahsan, Rayhan Mahmud, K. Ahsan, S. Begum","doi":"10.3329/BJM.V35I1.39805","DOIUrl":"https://doi.org/10.3329/BJM.V35I1.39805","url":null,"abstract":"Infections due to Gram-negative bacteria are common affairs in cancer patients during aggressive therapy. The present study characterizedmulti-drug resistant bacteria (MDR) isolated from cancer aspirates collected from patients admitted to the National Cancer Hospital in Dhaka, Bangladesh. A total of 210 aspirate samples were collected from cancer patients. Out of 210 samples Acinetobacter spp.led the list of isolates (8.89%, n=45). Of these species, 50% exhibited resistance to Amoxycillin and Nitrofurantoin, each, 25% exhibited resistant to Cefotaxime, Azithromycin, Ciprofloxacin, Clindamycin, and Sulfamethoxazole. A total of 33.33% of the Bordetella spp.which accounted 6.67%of the total isolates exhibited resistance to Cefotaxime. All oftheLegionellapneumophila,comprising 4.4%of the isolated species, wereresistant to Cefotaxime, Azithromycin, and Clindamycin.In contrast, 50% were resistant to Cefotaxime, Azithromycin, and Ceftriaxone. Of the Escherichia coli(4.4%, n=45) isolated,50% exhibited resistance to Cefotaxime, Clindamycin, Ceftriaxone, Amoxycillinand Sulfamethoxazole.The only isolate of Klebsiella sp. was demonstrated to be an ESBL producer. The isolation of multidrug resistant bacteria from cancer patients is of particular concern in Bangladesh where cancer and drug resistance are both common phenomena but treatment facilities are poor. To our knowledge this is the first report of the isolation of drug resistant bacteria from cancer patients from Dhaka city. \u0000Bangladesh J Microbiol, Volume 35 Number 1 June 2018, pp 61-66","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/BJM.V35I1.39805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49203639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Silico Approach To Design a B-cell Epitope Based Vaccine Target Against Yellow Fever Virus","authors":"Shamira Tabrejee, Mahboob Hossain","doi":"10.3329/bjm.v35i1.39801","DOIUrl":"https://doi.org/10.3329/bjm.v35i1.39801","url":null,"abstract":"Yellow fever virus is a prototype member of the Flaviviridae family causing high fever and jaundice. Though YF 17D vaccine is administered to yellow fever patients, however it can produce adverse effects in immunocompromised, older people and young infants. The aim of this study is to design an epitope-based peptide vaccine by targeting envelope (E) protein of Yellow Fever Virus. Thirty sequences of E protein of Yellow Fever Virus strains were retrieved from NCBI database. E protein was found to be mostly conserved among all the sequences with little variability and also was identified as a probable antigen. Different epitope prediction tools predicted 4 common epitopes, 3 of which were found to be antigenic. A peptide VKNPTDTGin E protein was predicted to have surface accessibility which overlaps with the VKNPTDTGHGT epitope.So, the whole VKNPTDTGHGT epitope was taken for further analysis. The VKNPTDTGHGT epitope showed 96.67% conservancy and also possesses flexibility, hydrophilicity and non-toxicity. Therefore, VKNPTDTGHGT can be regarded as a potential vaccine candidate against Yellow fever virus with further in vitro and in vivo validation. \u0000Bangladesh J Microbiol, Volume 35 Number 1 June 2018, pp 27-35","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/bjm.v35i1.39801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42047290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-Vitro Antibacterial Properties of Ethanol and Methanol Extracts of Betel Leaves Collected from Different Areas of Bangladesh","authors":"S. Hossain, K. Das, M. Acharjee","doi":"10.3329/BJM.V34I2.39624","DOIUrl":"https://doi.org/10.3329/BJM.V34I2.39624","url":null,"abstract":"Current investigation depicted in-vitro antibacterial activity of available betel leaf (sweet, hot and fresh betel leaves) collected from different place of Bangladesh. The in-vitro antimicrobial activities of the ethanol and methanol extracts of the betel leaf were noticeable against tested bacteria. Among 3 categories of samples, the antibacterial action of ethanol extracts of hot betal leaf was found the highest against most of the bacteria except Klebsiella sp. and Staphylococcus sp., while the methanol extract showed antibacterial activity against all the pathogenic strains tested. The highest MIC (1mg/ml) and the lowest MIC values (25mg/ml) of hot betel leaf and sweet betel leaf were found against E. coli and all test organisms, respectively. This evidence revealed that betel leaf extracts can be used to combat against human pathogens. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 125-127","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/BJM.V34I2.39624","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43215240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resistance to Azithromycin and β-Lactam Antibiotics by Clinical Isolates of E. coli Isolated from Dhaka, Bangladesh","authors":"S. Ahsan, M. Uddin, Juthika Mandal, M. Akhter","doi":"10.3329/BJM.V34I2.39613","DOIUrl":"https://doi.org/10.3329/BJM.V34I2.39613","url":null,"abstract":"Antibiotic resistant E. coli are prevalent in Bangladesh. The indiscriminate use of antimicrobials and ready availability of over the counter drugs are responsible for this. This study was conducted to investigate the susceptibility of clinical Escherichia coli to the antibiotics Imipenem, Ceftriaxone, Ceftazidime and Azithromycin. Kirby-Bauer disk diffusion method was used to determine sensitivity to antimicrobials. Agar based assay was employed for the detection of efflux pumps. PCR was used amplify antibiotic resistance genes.All isolates were resistant to Ceftriaxone whereas most were sensitive to Imipenem. The MICs of Ceftazidime and Azithromycin ranged between 128 μg/ml and 256 μg/ml. The prevalence of ²-lactamase producers was 57.89 % with 36.84 % of the isolates exhibiting ESBL activity. No specific correlation could be found between plasmid sizes and antibiotic resistance patterns. Efflux pump was found to be involved in Azithromycin resistance in 63.15% of the isolates. The gene for phosphotransferase, mph(A) was the most common among the macrolide modifying genes, being present in 73.68% (14/19) of the isolates followed by both erm(A) anderm(C) esterases each present in 10.53% (2/19) isolates. This study concluded that clinical isolates of E. coli in Bangladesh could be resistant to multiple classes of antibiotics through different mechanisms of resistance. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 61-66","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/BJM.V34I2.39613","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47634416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biocontrol of Foot and Root Rot Disease of Grasspea (Lathyrus sativus) by Dual Inoculation with Rhizobium and Arbuscular Mycorrhiza","authors":"Mushfika Rahman, Me Ali, F. Alam, M. Banu, M. Faruk, M. Bhuiyan","doi":"10.3329/bjm.v34i2.39622","DOIUrl":"https://doi.org/10.3329/bjm.v34i2.39622","url":null,"abstract":"The present study was carried out to evaluate the effect of indigenous arbuscular mycorrhizal fungi (AMF) and Rhizobium (R) on plant growth and their biocontrol against grasspea foot and root rot disease caused by Sclerotium rolfsii. The bio-control potential of these bio-agents against foot and root rot pathogen was carried out under pot culture condition using AMF alone or in combination with rhizobial inoculum in the nethouse of Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during 2014-2015 through 2015-2016. The experiment was designed in RCBD with 8 treatments and 4 replications. Grasspea variety BARI Khesari-1 was used as a test crop. Peat based rhizobial inoculum (BARI RLs-10) was used in this experiment @ 50 g kg-1 seed. The AM fungi used in this experiment were Glomus fusianum, Glomus macrocarpum, Glomus warcuppi, Acaulospora foveata, Acaulospora denticulate, Gigaspora albida, Gigaspora rosea, Glomus spp. etc. Soil based AM inoculum containing about approximate 252 spores and infected root pieces of the host plant was used pot-1. There were eight treatments viz. T1: Arbuscular mycorrhiza (AM), T2: Rhizobium, T3: AM + Rhizobium, T4: Sclerotium rolfsii, T5: Sclerotium rolfsii + AM, T6: Sclerotium rolfsii + Rhizobium, T7: Sclerotium rolfsii + AM + Rhizobium and T8: Control. Dual inoculation (AM + Rhizobium) increased 20-25% germination, 50-100% seed yield and 36-98% stover yield compared to control. Dual inoculation reduced 44-48% foot and root rot disease compared to control. On the contrary, Sclerotium rolfsii + Rhizobium, Sclerotium rolfsii + AM, and Sclerotium rolfsii + AM + Rhizobium reduced 12-17%, 16-20% and 28-31% foot and root rot disease, respectively compared to only Sclerotium rolfsii trearment. Therefore, arbuscular mycorrhizal fungal species and its combination with rhizobial inoculum were significant both in the formation and effectiveness of AM symbiosis and the reduction of foot and root rot incidence in grasspea plants. Use of these bio-control agents could be promoted as an active component of bio-intensive Integrated Disease Management Program (IDMP) under organic mode. Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 109-117","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/bjm.v34i2.39622","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69456260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbiological Analysis of Poultry Feeds Along with the Demonstration of the Antibiotic Susceptibility of the Isolates and the Antibacterial Activity of the Feeds","authors":"C. Roy, T. Ahmed, A. Uddin","doi":"10.3329/bjm.v34i2.39620","DOIUrl":"https://doi.org/10.3329/bjm.v34i2.39620","url":null,"abstract":"Poultry farms and poultry product processing industries are increasing worldwide to fill up the expanding demand for protein of the escalating population. To get good growth and more eggs from the domestic birds in the poultry farms, nutritious food supplements are commonly known as the poultry feed provided. These feeds also serve as sources of bacterial, fungal and viral contamination which in turn can cause diseases in the birds and ultimately can infect the consumers if the poultry is not processed and cooked properly. In this study, in order to determine the pathogenic bacterial load five different poultry feed samples sold in local markets of Dhaka city were analyzed. All samples harbored total viable bacteria up to 5.0×106 cfu/gm and total fungal count up to 4.5×105 cfu/gm. While Escherichia coli was absent in all samples; Klebsiella spp. and Aeromonas spp. were found to be present in only one sample (1.4×106 cfu/gm in sample 4 and 2.9×105 cfu/gm in sample 5 respectively). Staphylococcus aureus and Shigella spp. were found to be predominat in all the samples. Pseudomonas spp. and Vibrio spp. were present in 3 and 4 samples, respectively. Aeromonas spp., Vibrio spp., Salmonella spp. and Staphylococcus aureus showed 100% drug resistance towards ER, NA, NVB, KAN antibiotics. The finding of the study emphasis on the prevention of contamination through a sound maintenance of quality during poultry feeds preparation, storage and maintenance. Diseased birds and their excreta must be destroyed during poultry farming. Usage of excess antibiotics must be regulated as suggested from the data of the current study that shows high resistance of the bacterial isolates from the food. Finally, the consumers should process and cook the poultry items properly to save themselves from further food hazards. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 103-107","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/bjm.v34i2.39620","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47850873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vitro demonstration of Pseudomonas Growth and Phenotypic Examinations of the Cells Under Cold Shock","authors":"Anika Bushra Moumita, N. Tabassum, I. Nur","doi":"10.3329/bjm.v34i2.39623","DOIUrl":"https://doi.org/10.3329/bjm.v34i2.39623","url":null,"abstract":"The present study attempted to detect the effect of cold shock on Pseudomonas aeruginosa, P. fluorescence, and P. putida; to deduce the culturable cells, the possible dead cells and viable but non-culturable (VBNC) cells; i. e., living but not capable of forming the colony forming units (CFUs) at 0 oC and at 4 oC. Estimation of VBNC at low temperature was performed by deducting the number of culturable cells (formed as CFUs) at 0 °C and at 4 oC from the culturable cells at 37 °C. Maximum culturable cells (around 106 CFU/ ml) appeared at 24-48 hours, and after that, a gradual decline in the numbers of the culturable cells was observed. A minor but significant growth reduction was noticed in Minimal Broth compared to that in Luria Broth. Significant reduction in the culturable cells of all three strains was noticed under cold shock. However, a fraction of the population of each strain was observed to survive under cold stress. Interestingly while the number of culturable cells decreased in course of time under cold shock, the number of VBNC apparently seemed to be constant or to be increased. A comparatively lower number of VBNC was noticed under cold shock in case of P. putida which in turn affected culturability at ambient temperature. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 119-124","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/bjm.v34i2.39623","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46403037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antibacterial Activity of Cinnamaldehyde and Carvacrol against Foodborne Pathogens and Spoilage Bacteria","authors":"Shikha Rani Saha, M. Bari, Y. Inatsu, S. Kawampto, M. Hoque","doi":"10.3329/BJM.V34I2.39618","DOIUrl":"https://doi.org/10.3329/BJM.V34I2.39618","url":null,"abstract":"The excessive use of chemical preservatives is a serious problem worldwide, which necessitates the discovery of new classes of antimicrobials from other sources like herbs and spices for preservation of food and/or food products. In this study, antibacterial activity of essential oils (EOs) such as cinnamaldehyde and carvacrol were tested against four foodborne pathogens viz Staphylococcus aureus ATCC 25923, Shigella dysenteriae-I MJ-84, Escherichia soli ATCC 25922, Vibrio cholerae ATCC 6395 and two food spoilage bacteria viz Pseudomonas aeruginosa ATCC 27853 and Klebsiella rhizophila ATCC 13882, respectively, using disc diffusion method. These EOs were found to inhibit both categories of bacteria. Cinnamaldehyde and carvacrol showed maximum 30.0 ± 0.2 and 27.5 ± 0.5 zones of inhibition, respectively against S. aureus. Pseudomonas aeruginosa was found resistant against carvacrol. Cinnamaldehyde and carvacrol was determined. Both showed antibacterial activity after treatment at 100°C for 30 min suggesting that high temperature does not affect the activity. Both the EOs have a broad pH range and exhibited highest activity at pH 7.0, suggesting that they remain un-dissociated at pH change. The MIC and MBC values of cinnamaldehyde ranged between 0.125 and .0 %, and 0.25 and 2.0 %, respectively and MIC and MBC values of carvacrol ranged between 0.125 and 0.5%, and 0.25 and 1.0 %, respectively. The results of this study confirmed the possibility of using cinnamaldehyde and carvacrol in preventing the growth of foodborne pathogens and spoilage bacteria and extend the shelf life of foods. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 91-96","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/BJM.V34I2.39618","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42544322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic Relatedness among Escherichia coli Isolated from Clinical Samples","authors":"S. Ahsan, R. Amin, Anindita Bhowmik","doi":"10.3329/bjm.v34i2.39619","DOIUrl":"https://doi.org/10.3329/bjm.v34i2.39619","url":null,"abstract":"A common member of the intestinal microbiota in humans and animals is Escherichia coli. Based on the presence of virulence factors, E. coli can be potentially pathogenic. The focus of this study was to determine genotypic diversity among clinical strains of E. coli. Test isolates were identified by biochemical, culture-based and molecular tests. Partial sequence of 16s rDNA was determined by Polymerase Chain Reaction using universal primers. The sequences were used as input in Basic Local Alignment Search Tool (BLAST) to reconfirm the identity of the isolates. Sequences were edited in Chromas and aligned in Bioedit. Afterwards, sequences were fed into Mega 5 and a dendogram was constructed. We used three sequences deposited in GenBank for comparison with our test sequences. It was found that two of our sequences showed similarity to the reference sequences. One of the isolates was similar to a Uropathogenic and a commensal E. coli. The other isolate showed similarity to a UPEC strain. It is possible that both of these isolates were commensal bacteria that led to opportunistic infection in the patients. The rest of the nine strains were different from the reference sequences. These isolates may be opportunistic pathogens that have undergone mutation events leading to sufficiently different rDNA sequences from the reference bacteria. Or they may also be pathogenic strains that caused infection in patients. This study indicated that clinical isolates of E. coli show variation in terms of their rDNA sequences. In order to study their phylogeny, other supporting tools such as investigation for phylogenetic markers, RAPD, ARDRA, ERIC-PCR, ribotyping, etc. may be used to study variation among isolates to a more significant extent. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 97-101","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41705447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antibacterial Properties of Essential Oil (EO) Extracted from Nigella sativa Linn. (Black cumin) and its Application Against Vibrio cholerae in Ground Chicken Meat","authors":"Sharmina Deloer, M. Bari, M. Hoque","doi":"10.3329/bjm.v34i2.39612","DOIUrl":"https://doi.org/10.3329/bjm.v34i2.39612","url":null,"abstract":"Chemical preservatives for food preservation at high concentration are hazardous for public health. The natural antimicrobials from plants, herbs and spices have been given priority as alternatives of the chemical preservatives. In this study, antibacterial activity of the essential oil (3%) from black cumin seeds was tested against five food borne pathogens viz Staphylococcus aureus (ATCC 25923), Shigella dysenteriae-I (MJ-84), Escherichia coli 0157:H7 (ATCC 12079), Escherichia coli (ATCC 25922) and Vibrio cholerae( ATCC 6395) using disc diffusion method. The essential oil (EO) showed antibacterial activity against both Gram positive and Gram negative bacteria with the highest inhibition against S. aureus (17.4 ± 0.2) and the lowest against Vibrio cholerae (14.5 ± 1.0). No activity was observed against E. coli and E. coli O157:H7. The effect of temperature and pH on the antibacterial activity of the EO from black cumin seeds was determined. At 100°C for 30 min treatment, no significant reduction of antibacterial activity of the EO was observed, suggesting that high temperature does not affect the activity. The optimum temperature for the activity was recorded at 50°C. The EO showed the highest activity at pH 7.0 (optimum) with an insignificant change of activity at pH 5.0, 9.0 and 10.0. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of EO against S. aureus, V. cholerae and Shigella dysenterae were determined by two fold dilution method at optimum temperature of 50°C and 37oC and optimum pH at 7.0 and 5.0, respectively, which ranged from 0.125 (S. aureus) to 1.0% (Shigella dysenterae), with the MBC of 0.25 to 2.0%, respectively. Three times of MIC value of EO (1.5%) was applied in ground chicken meat seeded with V. cholerae ATCC 6395 and was kept at -20°C for 10 days. The test organism was diminished within 24 hours, suggesting that the EO from black cumin is highly active in vivo and could be used as preservative in ground chicken meat. The results of this study provide new dimension of research on EOs from spices against foodborne pathogens in vivo in controlling their growth in meat based food and food products. \u0000Bangladesh J Microbiol, Volume 34 Number 2 December 2017, pp 55-60","PeriodicalId":84251,"journal":{"name":"Bangladesh journal of microbiology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3329/bjm.v34i2.39612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45234934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}