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Showing 3 results for Arak
Frequency of Bacterial Frequency of Bacterial Contamination in Traditional Ice Cream Produced in Arak, Iran (2011)
M Rezaei, R Ghasemi Khah, M Parviz, O Zarei,
Volume 8, Issue 2 (7-2014)
Abstract
Abstract Background and Objective: Ice cream is a suitable environment for microbial growth due to its chemical structure, ingredients, and its increased supply and demand. In the absence of hygienic considerations, it can cause poisoning. This study aimed to determine bacterial contamination in traditional ice cream produced in Arak city in 2011. Material and Methods: The samples (n= 30) were randomly obtained from different parts of Arak in, 2011. The Samples were shipped in cold conditions and total count of microorganisms test was performed according to Iranian national standards. Results: In 16.66%, the microbial contamination was below the limit of microbial load (5×104), and in 83.3% the contamination was more than allowed level. Conclusion: This study highlights the dire situation for bacterial contamination of traditional ice cream in Arak city. Keywords: Arak, Ice Cream, Microbial Contamination
Identification of Malassezia Species Isolated from Patients with Seborrheic Dermatitis Using PCR-RFLP Method in Arak, Iran
Mohajerani, Mr, Sarikhani, A, Gandomani, M, Eslamirad, Z, Mosayebi, M, Didehdar, M,
Volume 8, Issue 5 (1-2015)
Abstract
Abstract Background and Objective: Malassezia that is a part of normal flora is lipophilic yeast involved in a variety of skin diseases such as seborrheic dermatitis, pityriasis versicolor, atopic dermatitis and psoriasis. Seborrheic dermatitis affects most often the sebaceous-gland-rich areas of skin such as face, scalp, and parts of the upper trunk. Dandruff is a mild variant of seborrheic dermatitis characterized by scaling. In this study, Malassezia species causing dandruff were identified. Material and Methods: In this descriptive study, the samples (n= 60) from participants with dandruff were examined under a microscope using 10% KOH solution and cultured in Leeming and Notman ager medium. DNA Extraction was performed from colonies by glass bead and the Malassezia genus, and species were detected by CfoI enzyme using PCR-RFLP method Results: Of 60, 40 (66.6%) were positive for Malassezia yeast. The positive samples in direct examination grew in culture medium. Malassezia species isolated were Malassezia globosa (25 cases), Malassezia restricta (10 cases), Malassezia furfur (3 cases) and Malassezia sympodialis (2 cases). Conclusions: In most studies, the Malassezia species were identified as the agents causing seborrheic dermatitis. In our study, Malassezia globosa was isolated as a dominant species. Keywords: Seborrheic Dermatitis, Malassezia SPP, Arak
Evaluation and Isolation of Halophilic Bacteria from the Meyghan Lake in Arak, Iran
Farzaneh Mohammadzadeh Rostami , Milad Shahsafi ,
Volume 12, Issue 6 (11-2018)
Abstract
ABSTRACT
           Background and Objectives: Halophilic bacteria can grow and survive in environments with a wide range a wide range of salinities. In this study, we aimed to isolate halophilic bacteria from the Meyghan Lake in Arak (Iran) and evaluate their enzymatic activity.
           Methods: Samples were taken from four different areas of the lake. Halophilic bacteria were isolated by culture in moderate halophilic medium, sea water nutrient agar and nutrient agar containing different salt concentrations. Purification was done via consecutive culture methods, and production of extracellular hydrolytic enzymes including amylase, protease, lecithinase, DNase and lipase was evaluated.
           Results: Among 74 bacteria isolated from the lake water samples, 24 produced amylase, 27 produced lipase (Tween 40 and 80), 68 produced protease, three produced DNase and 61 produced lecithinase.
           Conclusion: In this study, we isolated halophilic bacteria with enzymatic activity and potential industrial applications.
           Keywords: Biological Diversity, isolation and purification, Halobacteriales, Meyghan Lake, Arak.

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