International journal of biotechnology最新文献_第2页

Effect of Different Extraction Solvents on the Antimicrobial Activity of Psidium Guajava (Guava) Leaves against Multi-Drug Resistant Bacteria Implicated in Nosocomial Infections 不同提取溶剂对番石榴叶抗医院感染多重耐药菌活性的影响

International journal of biotechnology Pub Date : 2020-01-01 DOI: 10.18488/journal.57.2020.91.24.37

F. Festus, Oyeniran Opeyemi Goodness, Ozabor Praise Temilade

引用次数: 2

Green Synthesis and Nanotoxicity Assay of Copper-Cobalt Bimetallic Nanoparticles as a Novel Nanolarvicide for Mosquito Larvae Management 新型灭蚊剂铜钴双金属纳米颗粒的绿色合成及纳米毒性试验

International journal of biotechnology Pub Date : 2020-01-01 DOI: 10.18488/journal.57.2020.92.99.104

Zaccheus Shehu, Wilson Lamayi Danbature, B. Magaji, M. M. Adam, Musa Aminu Bunu, Abigail John Mai, Yoro Mela

引用次数: 15

Assessment of Haemoglobin Polymorphism as a Potential Protein Marker in Selection for Genetic Improvement of the West African Dwarf Goat Population in Nigeria 血红蛋白多态性在尼日利亚西非矮山羊群体遗传改良选择中的潜在蛋白质标记评价

International journal of biotechnology Pub Date : 2019-01-01 DOI: 10.18488/journal.57.2019.81.38.47

G. D.S, U. H.O, Ogbole P.A.

引用次数: 0

Assessment of the Nutritional Qualities of a Locally-Produced Weaning Blend of Sorghum Ogi Flour Fortified with Bambara Groundnut Flour 本地生产的加班巴拉花生粉的高粱Ogi粉断奶混合物的营养品质评价

International journal of biotechnology Pub Date : 2019-01-01 DOI: 10.18488/journal.57.2019.82.115.124

Adeyemo Stella. M, Abimbola Olufemi. G

引用次数: 3

Optimization of Biodiesel Development from Non-Edible Indigenous Feedstocks in Nigeria 尼日利亚非食用原料开发生物柴油的优化研究

International journal of biotechnology Pub Date : 2019-01-01 DOI: 10.18488/journal.57.2019.81.84.92

Nwoko Christopher Ikpe Amadi, Nkwoada Amarachi Udoka, Ogu, Helen Ugochi

引用次数: 0

Fermentation Conditions and Process Optimization of Citric Acid Production by Yeasts 酵母生产柠檬酸的发酵条件及工艺优化

International journal of biotechnology Pub Date : 2018-12-31 DOI: 10.18488/JOURNAL.57.2018.71.51.63

F. Afolabi, S. Adeyemo, H. O. Balogun

{"title":"Fermentation Conditions and Process Optimization of Citric Acid Production by Yeasts","authors":"F. Afolabi, S. Adeyemo, H. O. Balogun","doi":"10.18488/JOURNAL.57.2018.71.51.63","DOIUrl":"https://doi.org/10.18488/JOURNAL.57.2018.71.51.63","url":null,"abstract":"The aim of this study was to isolate and screen citric acid producing yeasts using low cost substrates. Thirty three yeast isolates were obtained from pineapple, plantain and sugar cane waste and identified as; Saccharomyces cerevisiae, Schizosaccharomyces pombe, Candida tropicalis, Pichia guilliiermondii, Debaromyces sp., Candida parapsilosis, Candida rugosa, and Candida krusei. Candida tropicalis had zone of clearance of 49±2.1 mm in diameter, Pichia guilliermondii had 40±1.2mm. Saccharomyces cerevisiae produced citric acid with glucose with 105.0 mg/l. C. tropicalis yielded 132.2 mg/l with sodium nitrate. S. cerevisiae and C. tropicalis produced citric acid at pH 6 with 23.70mg/l and 23.80mg/l. P. gulliermondii at pH 4 produced 23.00mg/l. The temperature of 30°C favoured S. cerevisiae and C. tropicalis yielding 40.80mg/l and 39.80 mg/l. After extraction, the yield of the citric acid was 4.231g, 3g of which was recrystallized to yield 2.16g of pure citric acid resulting into 72% recovery. The result indicated that pineapple wastes, plantain wastes and sugarcane cane are potential sources of yeasts that can be used for the production of citric acid.","PeriodicalId":91506,"journal":{"name":"International journal of biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44899756","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: 14

Patterns of Plant Community Formation and Vegetation Structure in the Afro-Alpine Vegetation of Simien Mountains National Park, Ethiopia 埃塞俄比亚塞米恩山国家公园非洲高寒植被群落形成模式与植被结构

International journal of biotechnology Pub Date : 2018-11-07 DOI: 10.18488/JOURNAL.57.2018.71.31.43

G. Melese, Berhanu Abraha Tsegay, Getinet Masresha Kassa, Getnet Belay Kuratie

引用次数: 6

Vaccine Development Strategies, Progresses and Challenges for Human Immunodeficiency Virus (HIV): A Review 人类免疫缺陷病毒（HIV）疫苗开发策略、进展和挑战综述

International journal of biotechnology Pub Date : 2018-09-12 DOI: 10.18488/JOURNAL.57.2018.71.8.16

Tekeba Sisay, D. Verma, N. Berhane, Mesfin Tsegaw

{"title":"Vaccine Development Strategies, Progresses and Challenges for Human Immunodeficiency Virus (HIV): A Review","authors":"Tekeba Sisay, D. Verma, N. Berhane, Mesfin Tsegaw","doi":"10.18488/JOURNAL.57.2018.71.8.16","DOIUrl":"https://doi.org/10.18488/JOURNAL.57.2018.71.8.16","url":null,"abstract":"Human immunodeficiency virus is classified under the Retroviridae family and identified as a causative agent of acquired immunodeficiency syndrome (AIDS).Since Human immunodeficiency virus (HIV) is identified as causative agent of AIDS, about 39 million people have been died and 78 million people have been infected worldwide. Despite tremendous efforts are being made to develop successful diagnosis, treatment and prevention methods, and to develop HIV vaccine the effort remains great challenge for researchers, due to extreme genetic variability of the virus. Even though vaccination of HIV is the most promising, cost effective and feasible intervention strategy to control and eradicate HIV disease route and transmission, still now we are struggling to find an elusive vaccine after thirty years and disappointing results are recorded from previous clinical trials, except the promising RV144 HIV vaccine which is phase III clinical trial with the modest vaccine efficacy. The contribution of this study is to reveal the challenges to found potent HIV vaccine during the last decades, significant lessons learnt about the basic virology, pathogenesis, immunology, HIV/AIDS treatment and HIV infection prevention and significant findings and clinical trials progresses which are currently open the way to some extent to hope that HIV vaccine development is possible.","PeriodicalId":91506,"journal":{"name":"International journal of biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41441691","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

In Vitro Antibacterial Effects of Chloroform, Methanol and Water Extracts of Croton Macrostachyus Stem Bark Against Escherichia Coli and Staphylococcus Aureus Standard and Clinical Strains 大豆茎皮氯仿、甲醇和水提取物对大肠杆菌和金黄色葡萄球菌标准品及临床菌株的体外抗菌作用

International journal of biotechnology Pub Date : 2018-04-04 DOI: 10.18488/JOURNAL.57.2018.71.1.7

Tigist Minyamer, Getnet Belay

{"title":"In Vitro Antibacterial Effects of Chloroform, Methanol and Water Extracts of Croton Macrostachyus Stem Bark Against Escherichia Coli and Staphylococcus Aureus Standard and Clinical Strains","authors":"Tigist Minyamer, Getnet Belay","doi":"10.18488/JOURNAL.57.2018.71.1.7","DOIUrl":"https://doi.org/10.18488/JOURNAL.57.2018.71.1.7","url":null,"abstract":"In Ethiopia, different parts of Croton macrostachyus (C. macrostachyus) are used as a traditional medicine to take care of infectious diseases such as typhoid and measles, but there is no documented report on the antibacterial activity of stem bark of this plant in Ethiopia. C. macrostachyus stem bark was extracted using chloroform, methanol, and water extraction solvents and tested for their antibacterial activities against Escherichia coli (E. coli), clinical isolates and standard, and Staphylococcus aureus (S. aureus), clinical isolates and standard, using agar well diffusion and broth dilution methods. The positive control was Chloramphenicol, while dimethyl sulfoxide (DMSO) was served as negative control. The present study showed the potent antibacterial activity of the C. macrostachyus stem bark extract against all tested bacterial pathogens. The methanol extract of C. macrostachyus stem bark showed the highest zone of inhibition (17+1mm) against S. aureus (standard) and the lowest zone of inhibition (12+1) against E. coli (clinical isolate). In this study, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of 500 & 500 mg/ml, 62.5 & 125 mg/ml and 250 & 500mg/ml were obtained for water, methanol, and chloroform extracts of C. macrostachyus stem bark against clinically isolated E. coli respectively. C. macrostachyus stem bark extracts have confirmed antibacterial effects, mainly on E. coli and S. aureus. Thus, C. macrostachyus stem bark could be effective for prevention of bacterial infections and may be considered as an option to antibiotic regimens. But further studies should be conducted with different extraction solvents and toxicity and phytochemical analysis must be performed on these plants to use as sources and templates for the synthesis of drugs.","PeriodicalId":91506,"journal":{"name":"International journal of biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49569886","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: 3

In-Vitro Antibacterial Activity of Plantago Lanceolata Against Some Selected Standard Pathogenic Bacterial 车前草对部分标准致病菌的体外抑菌活性研究

International journal of biotechnology Pub Date : 2018-01-01 DOI: 10.18488/journal.57.2018.71.44.50

Eshetie Kassaw, Tilahun Yohannes, Endalkachew Bizualem

引用次数: 7