مهسا انصاری Articles List

List of Articles مهسا انصاری

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1 - Detection of zoonotic Lactococcus garvieae in rainbow trout meat and evaluation of virulence gene
Mehdi Raissy mahsa Ansari

Lactococcosis which is caused by Lactococcus garvieae is now widespread. This species is categorized in zoonosis agents and is able to cause endocarditis especially in immunosuppressed persons. This study was done to detect Lactococcus garvieae in cultured rainbow trout More

Lactococcosis which is caused by Lactococcus garvieae is now widespread. This species is categorized in zoonosis agents and is able to cause endocarditis especially in immunosuppressed persons. This study was done to detect Lactococcus garvieae in cultured rainbow trout meat collected from retail market and to evaluate the virulence of the isolates. A total of 90 fresh fish were randomly selected and were transferred to the laboratory in appropriate conditions. After collecting meat samples, the bacteria were investigated by culture on BHIA and standard biochemical tests. The results were confirmed by PCR. Presence of virulence gene in the isolates were studied and the results revealed that 4 isolates of a total of 9 collected isolates harbored cap virulence gene (44.4%). According to the results, rainbow trout meat can be contaminated with Lactococcus garvieae which is a potential danger for consumers. However, it depends on the nutritional habits and methods of reservation. Manuscript profile
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2 - Fish-borne parasites: A review on the reports from Iran
Hossein Momeni Mehdi Raissy Masoumeh Bashiri Maryam Barzegar Mahsa Ansari

A high number of parasites can infect fish, and some can be transmitted to humans. Human or fish-eating mammals can be the main host of these parasites. Today, more than 40 species of fish-borne parasites have been identified, causing disease in humans. These parasites More

A high number of parasites can infect fish, and some can be transmitted to humans. Human or fish-eating mammals can be the main host of these parasites. Today, more than 40 species of fish-borne parasites have been identified, causing disease in humans. These parasites can be classified as protozoa, trematode, Cestoda, Nematoda and Acanthocephala. Infection in humans usually occurs following the consumption of larvae-infected meat. The possibility and the rate of infection directly relate to different criteria, including the fish consumption rate, level of hygiene, feeding habits, and methods of cooking or processing. In this article, having discussed the fish-borne parasites, the reports of zoonotic parasites from fish in Iran have been discussed. Manuscript profile
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3 - Study of composition and antimicrobial effects of Thymus carmanicus, Zataria multiflora, Rosmarinus Officinalis and Cinnamomum verum essential oils on Aeromonas hydrophila
Manouchehr Momeni shahraki Reza Sharafati Chaleshtori Mehdi Raissy Mahsa Ansari Fatemeh Heidarinezhad Chaharmahali Farhang Tirgir
10.30495/jfm.2021.1945430.1746

Aeromonas hydrophila is an important pathogenic agent in aquatics and zoonotic in humans. This pathogenic agent can extensively be found in water and also is a part of fishes' digestive system microflora. Extensive researches have been carried out on the antimicrobial e More

Aeromonas hydrophila is an important pathogenic agent in aquatics and zoonotic in humans. This pathogenic agent can extensively be found in water and also is a part of fishes' digestive system microflora. Extensive researches have been carried out on the antimicrobial effects of natural compounds against food-borne pathogens, indicating that these products can substitute antibiotics. Essential oils of Thymus carmanicus, Zataria multiflora, Cinnamomum verum, Rosmarinus officinalis have antimicrobial effects due to their phenolic compounds. In this study, the bioactive compounds were detected using Gas Chromatography equipped with the mass spectrometer. Then minimum inhibitory concentrations and minimum bactericidal concentrations of the essential oils against A. hydrophila were calculated. According to the results, the lowest and the highest MIC and the minimum MBC were observed in T. carmanicus and Z. multiflora, respectively. The result indicated that the inhibition zone diameter increased with the increase of essential oil concentration. The inhibition zone, in the concentration of 1500 ug mL-1 T. carmanicus was 24.33±0.57 mm. The findings of this study showed the antimicrobial resistance of these compounds. Considering the increasing limitations against chemicals and antibiotics, such compounds could be recommended for prevention. Manuscript profile
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4 - Study of the effect of Satureja khuzestanica essential oil on the growth of Lactococcus garvieae in rainbow trout fillet at the refrigerator temperature
Mahsa Ansari Mehdi Soltani Ebrahim Hosseini Abolghasem Kamali

Abstract This research was done with the aim of study of the antimicrobial effects of Satureja khuzestanica on Lactococcus garvieae and on some spoilage characteristics of rainbow trout fillet in 4°C during 18 days of storage. To do so, 0.06, 0.12, 0.25 a More

Abstract This research was done with the aim of study of the antimicrobial effects of Satureja khuzestanica on Lactococcus garvieae and on some spoilage characteristics of rainbow trout fillet in 4°C during 18 days of storage. To do so, 0.06, 0.12, 0.25 and 0.5 µg g-1concentration of the essential oil were added to the fillets. According to the results, the highest microbial load was observed in the control group and the lowest was observed in the fillets contained 0.5 µg g-1 of the essential oil (P≤0.05). The results also showed an increase in spoilage characteristics of the fillets at the end of the experiment showing a statistical difference for protein content (P≤0.05). The results of this study revealed that S.khuzestanica results in the reduction of L. garvieaein fish fillets as the concentration of 0.5 µg g-1 was the most effective. Manuscript profile

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