Gholamhossein Ebrahimipour
Faculty of Biological Science, Shahid Beheshti University, GC, Tehran, Iran
[ 1 ] - Biodegradation of malathion by serratia marcescens isolated from Arvandkenar region, Iran
The global use of pesticides has resulted in the contamination of various ecosystems worldwide. The impact of these pesticides can be reduced through bioremediation. The factors that influence the biodegradation rate include the isolation of efficient bacteria for use in remediation and the determination of optimal biodegradation conditions. In this study, malathion degrading bacteria were isol...
[ 2 ] - Optimization of phenol biodegradation by efficient bacteria isolated from petrochemical effluents
Phenol is an environmental pollutant present in industrial wastewaters such as refineries, coal processing and petrochemicals products. In this study three phenol degrading bacteria from Arak Petrochemical Complex effluent were isolated which consume phenol. Molecular analysis was used to identify bacteria and isolated bacteria were identified as Rhodococcus pyridinivorans (NS1), A...
[ 3 ] - بهینه‌سازی زیست پالایی نفت خام توسط باکتری Alcanivorax dieselolei در محیط آبی با استفاده از روش تاگوچی
وارد شدن نفت و پساب‌های نفتی به دریاها آسیب‌های جدی به حیات آبزیان وارد می‌کند. علاوه بر آن این ترکیبات در بافت‌های بدن آبزیان تجمع یافته و سلامت انسان‌ها را تهدید می کنند، در نتیجه توسعه روش‌های کارآمد جهت تصفیه این مواد حائز اهمیت است. در این پژوهش برای ارزیابی کارایی فرآیند پاکسازی زیستی، از رسوبات و آب مناطق مختلف در سواحل خلیج فارس در مجاورت شهر بندر عباس نمونه‌برداری و پس از غنی‌سازی، کار...
[ 4 ] - Antimicrobial Activity of an Alcaligenes faecalis Strain Isolated from Oil Contaminated Soil
Abstract Background and Objective: The bacteria living in the specific ecological conditions are among the most promising antimicrobial producers. This study aimed at isolating antimicrobial producing bacteria from soils contaminated with crude oil. Material and Methods: the samples were obtained from crude oil contaminated soils around Dezful located in Khuzestan province, Iran, and antimicrob...
[ 5 ] - Optimization of Phenanthrene-degradation by Dietzia Cinnamea AP for Bioremediation Applications
Background: This study focused on isolation and identification of a Phenanthrene (Phe) degrader bacterium and optimization of environmental conditions for Phe degradation. Materials and Methods: Enrichment technique was used for isolation and the most effective isolate; named AP was selected based on its Phe biodegradation abilities. The isolate was identified using morphological and biochem...
[ 6 ] - جداسازی و شناسایی میکسوباکتر تولیدکنندۀ Myxovirescins،Myxalamides و Myxochromids از دستگاه گوارش کرم خاکی منطقۀ قائم‌شهر
مقدمه: میکسوباکترها باکتری‌های گرم منفی متعلق به گروه دلتا‌پروتئوباکترها با سلولهای رویشی میله‌ای‌شکل و ارگانوتروف هستند که رفتار گروهی منحصر‌به‌فردی را نشان می‌دهند و در دستۀ باکتری‌های خاک قرار می‌گیرند. مواد و روشها: جدایۀ میکسوباکتریایی Mx18Zk از اندام گوارشی کرم خاکی منطقۀ قائم‌شهر مازندران جداسازی شد. به‌منظور بررسی فعالیت زیستی باکتری استخراج حلالی محیط‌کشت انجام و عصارۀ متانولی حاصل...
[ 7 ] - The identification of protein changes in Celeribacter persicus SBU1 after degrading phenanthrene
Organisms in different environmental conditions express different genes, which result in different protein expressions. These changes result from the adaptation of the organism to environmental conditions such as the presence of toxic substances. This study aimed to investigate the changes in protein expression in Celeribacter persicus SBU1 isolated from Nayband Bay mangrove forests, cultured i...
[ 8 ] - Isolation and identification of alkaline protease-producing bacterium in the presence of washing-powder from Geinarje hot spring, Ardabil, Iran
Proteases are important industrial enzymes used in different areas of industry, mainly detergent, food and leather industries. In this study, novel alkaline protease-producing bacterium was isolated from Geinarje hot spring and examined for maximum protease activity to be utilized in washing-powder. The isolated bacterium was cultured in mineral salt medium including 2% Skim Milk. Proteolytic a...
[ 9 ] - Inhibitory and Stimulatory Effects of Some Metals on Asparaginase Activity Produced by Staphylococcus MGM1
Background: Asparaginases are known to be the cornerstone for the treatment of acute lymphoblastic leukemia (ALL) and are used for treatment in all pediatric regimens as well as in the majority of adult treatment protocols. Clinical hypersensitivity reactions against commercially available asparaginase have resulted in the failure in the treatment of ALL in more than 60% of cases. Thus, it is...
[ 10 ] - کاربرد نانولوله های کربنی در بیوسنسور فنل بر پایه سلولهای باکتریایی
مقدمه: در سالهای اخیرتکنیکهای تشخیصی الکتروشیمیایی به دلیل سادگی، سرعت و مقرون به صرفه بودن روشهایی نویدبخش به شمار می روند. تاکنون، تعدادی بیوسنسور الکتروشیمیایی، بر پایه آنزیم و یا میکروارگانیسمها برای تشخیص فنل، به عنوان یک آلاینده مقدماتی که در لیست آژانس حفاظت محیط زیست ایالات متحده قرار دارد، ساخته شده است. نانولوله های کربنی به دلیل خواصی چون هدایت الکتریکی بالا، ثبات شیمیایی و استحکام م...
[ 11 ] - An Overview of Asparaginase Enzyme Features: An Anticancer Enzyme with High Potency
Introduction: One of the important findings in the pharmaceutical and medical industry is the use of the asparaginazase enzyme as an anticancer drug. The asparaginase enzyme, hydrolyzing the amino acid of asparagine, reduces this amino acid in the blood and causes the death of cancer cells. Today, the enzyme is used to treat various types of leukemia, particularly acute lymphoblastic leukemia, ...
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