微生物学(英文)最新文献_第9页

Bioinformatics Analysis of Mating-Type Sequence of Basidiomycetes 担子菌交配型序列的生物信息学分析

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.12677/amb.2022.111003

琳霖杜

引用次数: 0

Bacteriome in Ticks Collected from Domestic Livestock in Kenya 肯尼亚家畜蜱虫中的细菌组

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.122006

B. Mutai, K. Njaanake, Kimita Gathii, B. Estambale, J. Waitumbi

引用次数: 1

Familial White Piedra Caused by Trichosporon inkin 由三磷酸丝素油墨引起的家族性白斑

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.127027

M. Romero-Navarrete, F. Hernández-Hernández, R. Arenas, Aureliano D Castillo-Solana, Brianda Stephanie Herrera-Ramírez, Erika Córdova-Martínez

引用次数: 0

Phytochemical Screening, Antibacterial Effect, and Essential Oil Extract from the Leaf of Artemisia afra against on Selected Pathogens 阿芙拉蒿叶挥发油提取物对选定病原菌的植物化学筛选、抑菌作用及抑菌效果

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.127028

Biruk Bezabeh Yimam, Abebe Desalew

引用次数: 0

Biodiversity and Distribution of Aspergillus and Their Toxins in Maize from Western and Eastern Regions of South Africa 南非西部和东部地区玉米曲霉及其毒素的生物多样性和分布

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.123011

Ngum Queenta Nji, Adetunji Modupeade Christianah, Ateba Collins Njie, Mwanza Mulunda

{"title":"Biodiversity and Distribution of Aspergillus and Their Toxins in Maize from Western and Eastern Regions of South Africa","authors":"Ngum Queenta Nji, Adetunji Modupeade Christianah, Ateba Collins Njie, Mwanza Mulunda","doi":"10.4236/aim.2022.123011","DOIUrl":"https://doi.org/10.4236/aim.2022.123011","url":null,"abstract":"Aspergillus species and aflatoxins production are more prevalent during times of high heat and drought. In South Africa, there is frequent occurrence of drought as a result of climate change. The aim of this study was to investigate the biodiversity and distribution of Aspergillus species with their corresponding toxins in maize from main maize producing regions of South Africa; [Western Regions (WR) and Eastern Regions (ER)]. One hundred and twen-ty-three (64 from WR and 59 from ER) maize samples from the two agro-climatic regions in South Africa were analyzed using cultural, molecular and analytical methods. Across agro-climatic regions, Aspergillus species contaminated about 62% of the maize samples, while Aspergillus flavus was the most prevalent (47.15%) followed by Aspergillus fumigatus (4.69%) while the least was Aspergillus parasiticus (0.81%). The Western Regions showed a higher distribution of varieties of Aspergillus species compared to the Eastern Regions. Aflatoxins contaminated only 27.64% of the maize samples with a mean total aflatoxin concentration of 2.40 μg/kg which is below the South Africa’s set standard for total aflatoxin in food (5 μg/kg). About 10.57% of the samples produce aflatoxins above the 5 μg/kg permissible limit for total aflatoxin in foods. The ratio of toxigenic to atoxigenic strains of Aspergillus flavus was generally low in all the regions of South Africa. This study could aid policy makers to make informed decisions in developing remediation strategies for Aspergillus mycotoxins.","PeriodicalId":56408,"journal":{"name":"微生物学(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70486912","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}

引用次数: 4

Knowledge, Attitudes and Practices of Antibiotic Use and Antimicrobial Resistance among Medical Students in a Private University in Dominica, West Indies 西印度群岛多米尼加一所私立大学医学生抗生素使用和抗菌素耐药性的知识、态度和做法

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.129035

S. Olatunde, J. Owolabi

引用次数: 3

Production of Ergot Alkaloids by the Japanese Isolate Claviceps purpurea var. agropyri on Rice Medium 日本分离物Claviceps purpurea var. agropyri在水稻培养基上生产麦角生物碱的研究

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.124019

Yuji Doi, Daigo Wakana, Hisashi Takeda, E. Tanaka, T. Hosoe

{"title":"Production of Ergot Alkaloids by the Japanese Isolate Claviceps purpurea var. agropyri on Rice Medium","authors":"Yuji Doi, Daigo Wakana, Hisashi Takeda, E. Tanaka, T. Hosoe","doi":"10.4236/aim.2022.124019","DOIUrl":"https://doi.org/10.4236/aim.2022.124019","url":null,"abstract":"Ergot alkaloids (EAs) are secondary metabolites produced by ergot fungi (e.g., Claviceps purpurea), which are parasites of Gramineae grasses. EAs and their analogs are used to treat migraine, postpartum uterine bleeding, and Parkinson's syndrome. Recent studies have reported additional new bioactive activities of EAs and their analogs, making them essential compounds for drug development, drug repositioning, and clinical applications. EAs are produced industrially by field cultivation of ergot or liquid fermentation in the mycelial phase, but there are few published studies of the production of EAs by cereal culture and thus this approach is poorly understood. This study searched for Claviceps strains that produce EAs cultured artificially in the mycelial phase, then the selected strains were cultured on cereal media (white rice, brown rice, and rye) to examine their ability to produce EAs on each medium. C. purpurea var. agropyri produced the Clavine-type EAs pyroclavine (1), festuclavine (2), and agroclavine (3) in the mycelial phase. When cultured with white rice, brown rice, or rye, C. purpurea var. agropyri produced 1 - 3 on all cereal media. The total amount of 1 - 3 in each cereal medium (150 g of cereal per Roux flask) was 2220.5 ± 564.1 μg for white rice, 920.0 ± 463.6 μg for brown rice, and 595.4 ± 52.1 μg for rye. The white rice medium supported the highest production of 1 - 3, with the total amount of EAs (150 g of white rice per Roux flask) being about 34 times higher than that in the T25 liquid medium (190 mL per 1 L Erlenmeyer flask) (equivalent amount per flask).","PeriodicalId":56408,"journal":{"name":"微生物学(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70487091","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}

引用次数: 5

Antibiotic Susceptibility Pattern and Identification of Multidrug Resistant Novel Salmonella Strain in Poultry Chickens of Hathazari Region in Chattogram, Bangladesh 孟加拉国Chattogram哈扎扎里地区新型多药耐药沙门氏菌家禽鸡的药敏模式及鉴定

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.122005

K. N. Islam, E. Eshaa, M. Hassan, T. Chowdhury, S. Zaman

引用次数: 2

Antibacterial Activity of Psidium guajava Leaf and Stem Bark Extracts on Selected Bacteria in Ugbokolo, Benue State, Nigeria 番石榴叶和茎皮提取物对尼日利亚贝努埃州Ugbokolo选定细菌的抑菌活性

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.1210039

Peter Adikwu, Emmanuel Godwin Oyiwona, Adejor Johnson, Y. Awua, A. Hassan, Terkaa Oluwakemisola Adenugba, Ene Theresa Ebiega

引用次数: 1

Antioxidant and Antimicrobial Capacities of Two Medicinal Plants Used against Urinary Infections in Burkina Faso 布基纳法索两种药用植物抗尿路感染的抗氧化和抗菌能力

微生物学(英文) Pub Date : 2022-01-01 DOI: 10.4236/aim.2022.1212046

Sami Eric Kam, R. Meda, Soufiane Domalick Sanou, Windmi Kagambega, C. Ouedraogo, Franck Téounviel Somda, Isaac Saamou Boni, Eliasse Zongo, Daniel Kobo Gnada, Azouman Da, B. Koama, H. Ouoba, G. Ouédraogo

引用次数: 0