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Issue Info: 
  • Year: 

    621
  • Volume: 

    79
  • Issue: 

    3
  • Pages: 

    491-498
Measures: 
  • Citations: 

    0
  • Views: 

    0
  • Downloads: 

    0
Abstract: 

Mycotoxins are the toxins produced by various types of fungi, including Fusarium, which can produce different types of mycotoxins such as Deoxynivalenol (DON), Zearalenone (ZEN), T-2 toxin, and Fumonisins (FUM). Mycotoxins have the potential to reduce the quality of crops and pose health risks to both humans and animals. This can result in reduced animal production and substantial economic consequences on a global scale. Extensive research has been carried out to investigate the high incidence of contamination in grains by Fusarium fungi. In this study, 80 samples of maize from silos of dairy farms in Fars province, Iran were taken and examined for fungal contamination by Fusarium and potential production of DON and FUM. For this purpose, identification using specific primers for different genes was carried out by PCR test and gel electrophoresis with agarose (1%). Among different counties, the silos in Kharameh with 47.05% and Jahrom with 46.15% had the highest contamination rate, and the lowest contamination rate belonged to Kazeroon with 27.27%. Out of the 30 positive samples contaminated by Fusarium, 21 produced FUM, four produced DON, and five produced both toxins. Fusarium species that contaminated the maize samples were also identified, including 13, 10, and 7 samples contaminated by F. proliferatum, F. verticillioides, and F. graminearum, respectively. As a conclusion, the findings of the study indicate that 37.5% of the corn samples from dairy farm silos in Fars province were contaminated with the Fusarium fungus, which had the potential to produce the toxic mycotoxins, deoxynivalenol and fumonisins.

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Journal: 

POLLUTION

Issue Info: 
  • Year: 

    621
  • Volume: 

    8
  • Issue: 

    2
  • Pages: 

    567-577
Measures: 
  • Citations: 

    0
  • Views: 

    7
  • Downloads: 

    1
Abstract: 

Consumption of polythene is unavoidable in this era and it is increasing day by day. Polythene’s hazardous waste is adversely effecting environment. In fact any form of polythene is a nuisance to the environment because of strong resistance against degradation thus; they remain in nature for a very long time. Biodegradation is the only promising solution to overcome this problem.  Fungi, a group of saprophytic organisms are evolved to adapt for almost every environment, specially marine and freshwater source. This property drives fungi to grown on polythene even in adverse environment. So, present study was planned to compare biological degradation of low density polythene [LDPE] and biodegradable polythene by potential fungus to find out an eco-friendly and economic solution of polythene waste. Ten fungal strains were isolated from rotting polythene debris those are Penicillium chrysogenum, Rhizopus nigricans, Chaetomium murorum, Memnoniella echinata, Aspergillus fumigatus, Stachybotrys chartarum, Aspergillus niger, Chaetomium globosum, Aspergillus flavus and Fusarium oxysporum, in which Penicillium chrysogenum, Rhizopus nigricans, Aspergillus fumigatus, Aspergillus niger and Aspergillus flavus showed greatest results in terms of degrading both Low density polythene and biodegradable polythene. These isolates also showed good enzymatic reaction and weight loss. SEM analysis of polythene surface was also in support of these findings.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    621
  • Volume: 

  • Issue: 

  • Pages: 

    883-890
Measures: 
  • Citations: 

    0
  • Views: 

    4
  • Downloads: 

    8
Abstract: 

Fusarium blight is the most harmful disease of oil flax, which affects crops in all cultivation regions during the growing season. Considering the value of flaxseed oil, which is also used for medical purposes, it is advisable to use biological preparations to obtain environmentally safe products, which allow not only to ensure the protection of plants from diseases but also to improve the ecological situation. In recent years (2018-2020), at the biomethod laboratory of V.S. Pustovoit All-Russian Research Institute of Oil Crops has been carried out the search of the promising producer strains for developing microbiopreparations against the pathogen of oil flax Fusarium blight with a multifunctional type of action and a prolonged shelf life. These studies involve the study of the antagonistic mechanisms of promising producer strains of microbiopreparations on the disease pathogen. The article presents the effect of the promising antagonist strain T-1 Trichoderma sp. on the pathogen of oil flax Fusarium blight Fusarium oxysporum Schlecht. emend. Shyd. et Hans. var. orthoceras (App. et Wr.) Bilai, identified as a result of a gradual screening. High competition of the antagonist strain for the feeding area, its hyperparasitic and antibiotic activity was established during the co-cultivation of the antagonist and the pathogen by the method of double cultures. During the study of the mechanism of the antagonistic action of the promising producer strain on the Fusarium blight pathogen using a light microscope, it was found that even before coalescence with the antagonist colony on the second day of coincubation, the shrinking of certain areas in the pathogen mycelium was noted, which proves the antibiotic activity of the fungal antagonist T-1 Trichoderma sp. On the 4th day of co-cultivation, after coalescence of the pathogen and antagonist colonies, aggregation of the pathogen mycelium into the cords and the effect of the antagonist mycelium coiling around the pathogen hyphae were observed . On the 6th day, the effect of the antagonist mycelium coiling around the pathogen hyphae increased. By the 8th-10th days of interaction, there was observed degradation and lysis of the aerial and substrate mycelium of the pathogen of oil flax Fusarium blight. Over the entire observation period, there was noted the normal development of the oil flax Fusarium blight pathogen Fusarium oxysporum var. orthoceras in the control.

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Issue Info: 
  • Year: 

    621
  • Volume: 

    11
  • Issue: 

    1
  • Pages: 

    59-68
Measures: 
  • Citations: 

    0
  • Views: 

    6
  • Downloads: 

    1
Abstract: 

Background: Today, mycotoxins are considered critical contaminants in foodstuffs produced by fungi, highlighting the importance of food safety to human health. The toxigenic fungi invasion and mycotoxin production are highly variable and depend on climate, plant, and agronomic practices. Among these, Aflatoxins (AFs) are considered the most potent toxins. This study investigated the fungi presence and AFB1 contamination in corn and wheat grown in Albania during the 2022 harvesting year. Methods: Wheat samples were collected during the summer, while corn during the autumn, and further analyzed. Mycological contamination assessment applied the Verband Deutscher Landëirtschaftlicher Untersuchungs ̶ und Forschungsanstalten (VDLUFA) procedures. The AFB1 levels were measured using the Enzyme-Linked Immunosorbent Assay (ELISA) method. The MATLAB R2016b software was applied to perform statistical analysis. The Estimated Daily Intake on AFB1 was calculated to evaluate human exposure. Results: The genera Alternaria, Aspergillus, Cladosporium, Fusarium, and Penicillium were isolated, with higher rates of contamination in corn and the highest frequency Penicillium genus (77.89%). The Korça region presented a higher fungal load, 104 Colony Forming Unit (CFU)/g in corn. The AFB1 incidence (88.23%) in corn, was significantly higher than in wheat (4.91%). Additionally, the maximum level in corn was found 69.120 μg/kg, while in wheat, only 0.402 μg/kg. None of the wheat samples, in contrast to the 41.18% of corn samples, exceeded the threshold when referring to the respective Maximum Residue Levels. Conclusions: Our observation indicates a higher rate of AFB1 contamination in corn than in wheat. The high concentration levels and contamination incidence in corn require targeted interventions to reduce the AFB1 amounts. Strengthened regulation based on scientific evidence can reduce contamination outbreaks, economic implications, and potential benefits, such as increased consumer trust. Our study indicates that the exposure to AFB1 originates from corn consumption among the adult population. DOI: 10.18502/jfqhc.11.1.14996

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Journal: 

VIRTUAL

Issue Info: 
  • Year: 

    621
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    364-370
Measures: 
  • Citations: 

    0
  • Views: 

    69
  • Downloads: 

    0
Abstract: 

Introduction: Fungal infection of the nail, also known as onychomycosis, is a worldwide problem. It is estimated that onychomycosis constitutes 15-22 percent of all nail disorders. It is also known that 2-5 percent of the adult population in Europe have onychomycosis. This problem is quite common in the dermatology clinic of the countries in the Midle East, India and the Far East. The infection rates and types of fungi involved in onychomycosis vary with conditions such as age, sex, occupation, hygiene, foot wear and several environmental and climatic factors. Methods and Materials: A retrospective study of nail infection was carried out in the section of Medical Mycology, Pasteur Institute of Iran from April 1993 to March 1999. Nineteen hundreds eighty five cases examined for toe and finger nail infections.Results: Ranging in age were from 3 months to 84 years old. This study reports the causative agents of onychomycosis in the presented patients in the section of Medical Mycology, Pasteur Institute of Iran. The 1985 patients were examined for onychomycosis.Diagnosis was confirmed by demonstration of fungi in direct (KOH 20 percent) and cultural examination. Onychomycosis were proven in 601 patients. Three hundreds fifty patients were females (59 percent). The fingernails were more commonly positive in females (73.5 percent) than males, while the toenail positivity rate in males was 69 percent. Among 601 isolated species, dermatophytes were 308 cases (51 percent) mainly from toenail were predominant. Candida SPP. Were isolated in 46 percent of the cases, especially from fingernails. Nondermatophytic molds were isolated only in 3 percent of the patients (18 cases). Most common isolated dermatophytes were Trichophyton rubrum (66.5 percent) and T. Ylentagrophytes (24.6 percent). Other isolated dermatophytes were: violaceum, T. schoenleinii and Microsporum gypseum. Candida albicans were isolated in 40.9 percent of the yeast onychomycosis. Non- dermatophytyic molds were Aspergillos, Acromonium, Fusarium and Chrysosporium.Conclusion: Onychomycosis represent 30 percent of all mycotic infections of the skin. Their promoting factors, clinical aspects and differential diagnosis have been reviewed. It is necessary to confirm the clinical diagnosis of onychomycosis by laboratory tests (direct microscopy and cultures).

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Journal: 

مجازی

Issue Info: 
  • Year: 

    1
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    104-105
Measures: 
  • Citations: 

    2
  • Views: 

    210
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: 

مجازی

Issue Info: 
  • Year: 

    1
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    135-135
Measures: 
  • Citations: 

    1
  • Views: 

    122
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    1351
  • Volume: 

    3
  • Issue: 

    3
  • Pages: 

    49-56
Measures: 
  • Citations: 

    1
  • Views: 

    227
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

QUIMIO T.H.

Issue Info: 
  • Year: 

    1976
  • Volume: 

    5
  • Issue: 

    -
  • Pages: 

    241-250
Measures: 
  • Citations: 

    1
  • Views: 

    103
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

YAGEN B. | JOFFE A.Z.

Issue Info: 
  • Year: 

    1976
  • Volume: 

    32
  • Issue: 

    3
  • Pages: 

    423-427
Measures: 
  • Citations: 

    1
  • Views: 

    129
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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