Effects of ethanol and ultraviolet-c treatments on inactivation of Rhizopus oryzae spores which cause postharvest rot

Uyar, Gülsüm Ebru Özer; Uyar, Başar

doi:10.1590/fst.04618

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…oryzae was similar to that in the study of Ghasemian et al 37 Moreover, the efficacy of ethanol on R . oryzae was nearly similar to Uyar and Uyar, 38 who confirmed the lethality of ethanol on the R . oryzae spores.…”

Section: Discussionsupporting

confidence: 79%

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Clinical and mycological investigations of post‐COVID‐19 acute invasive fungal sinusitis

Eldsouky

Shahat

AL-Tabbakh

et al. 2022

Laryngoscope Investig Oto

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Objectives An increased incidence of acute invasive fungal sinusitis associated with the recent COVID‐19 pandemic has been observed, which is considered a public health concern. This study aims to detect the incidence, risk factors, causative agents, clinical presentations, outcomes, and susceptibility rate of various antifungals. Methods In this cross‐sectional cohort study, a total of 30 patients showing acute invasive fungal rhinosinusitis following a COVID‐19 infection were investigated. Histopathological biopsies, culture identification, and molecular confirmation of the causative agents were conducted. The demographic data, risk factors, clinical presentations, treatment regimen and its outcomes, and efficacy of antifungals were listed and analyzed. Results A total of 30 cases with a mean age of 59.6 ± 11.9 years were included. Diabetes mellitus was the most recorded comorbidity with a rate of 86.7%, whereas most of the patients received corticosteroids. The mycological examination confirmed the existence of Mucor (Rhizopus oryzae) and Aspergillus (Aspergillus niger) in 96.7% and 3.3% of the cases, respectively. Various stages of sinonasal involvement (ethmoid, maxillary, sphenoid, and inferior turbinate) represented 100%, 83.3%, 66.7%, and 86.7% of the cases, respectively. Headache and facial pain, ophthalmoplegia, visual loss, and blindness represented 100%, 66.7%, 90%, and 53.3% of the cases, respectively. All the cases were simultaneously treated with surgical debridement and amphotericin B. Moreover, R. oryzae was susceptible to it, whereas A. niger was sensitive to voriconazole, resulting in a survival rate of 86.7% (26/30). The R. oryzae and A. niger isolates were proven to be sensitive to acetic acid, ethyl alcohol, formalin, and isopropyl alcohol. Conclusions In patients with COVID‐19, the diagnosis of acute invasive fungal sinusitis and prompt treatment with antifungal medicine and surgical debridement are important in achieving better outcomes and survival rates. Level of Evidence 4

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Section: Discussionsupporting

confidence: 79%

“…was nearly similar to Uyar and Uyar,38 who confirmed the lethality of ethanol on the R. oryzae spores. Although the efficacy of formalin and isopropyl alcohol on R. oryzae has not yet been investigated, this study is the first to confirm the susceptibility of R. oryzae to both disinfectants.…”

supporting

confidence: 84%

Clinical and mycological investigations of post‐COVID‐19 acute invasive fungal sinusitis

Eldsouky

Shahat

AL-Tabbakh

et al. 2022

Laryngoscope Investig Oto

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“…Tobacco leaf mildew is commonly found throughout China where the pathogen Rhizopus oryzae can infect petioles and leaves during the flue-curing process with typical symptoms emerging at a later stage. Several physical and chemical control measures have been used to inhibit the growth of R. oryzae on tobacco leaves (Amadioha, 2001;Amadioha and Markson, 2007;Chaurasia et al, 2017;Uyar and Uyar, 2019). However, fumigation with chemicals can cause undesirable side effects, such as product contamination, environmental diffusion, and increase the production cost of goods.…”

Section: Discussionmentioning

confidence: 99%

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Pan

Munir

et al. 2021

Front. Microbiol.

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Tobacco leaf mildew caused by Rhizopus oryzae (Mucorales, Zygomycota) is an important and devastating post-harvest disease during flue-cured tobacco period, and also is known to cause diseases of fruits and vegetables. In this study, assessment of several candidate biological control agents were first tested in vitro to determine their antifungal activities and potential strains were further applied to tobacco leaves to prevent pathogen colonization during the tobacco-curing process. In vitro screening of 36 bacteria and the isolates of one fungus were performed for their antifungal activities against R. oryzae using dual culture method. Potential five isolates viz. Bacillus amyloliquefaciens B9601-Y2 (Y2), B. amyloliquefaciens YN201728 (YN28), Pseudomonas sp. (Pb), and B. amyloliquefaciens YN201732 (YN32) and T. harzianum B (Th-B) from total screened isolates have shown remarkable results for controlling the mycelial growth of R. oryzae. Finally, out of these five isolates, B. amyloliquefaciens B9601-Y2 potentially reduced the mycelial growth of fungal pathogen with great inhibitory effect. In order to get a better understanding of the biocontrol effect of B9601-Y2 in a flue-curing barn, various suspension density tests with two application methods involving spraying and soaking were examined. Two application methods of B. amyloliquefaciens B9601-Y2 had 98.60 and 98.15% control effects, respectively. In curing barn, the incidence in the treatment group was significantly reduced and tobacco leaves did not get mildew. Altogether, the study demonstrated that candidate bacterial strain B. amyloliquefaciens B9601-Y2 is a potential antagonist for the management of tobacco leaf mildew during flue-curing.

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“…Ratio of product surface area to volume Gökmen V. Palazoglu T.K. 2009 [22]; Food Drink Europe 2011 [9] The food industry exploits physical methods based on electromagnetic waves to modify selected quality traits of raw material, semi-products, or finished products [23]. An effective method for the preservation of products made of biological raw materials is offered by ultraviolet radiation in the C band.…”

Section: Introductionmentioning

confidence: 99%

Effect of Potato Tuber Exposure to UV-C Radiation and Semi-Product Soaking in Water on Acrylamide Content in French Fries Dry Matter

2020

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This study aims to determine the effect of raw potato tubers’ exposure to UV-C radiation and semi-products soaking in water on the content of acrylamide in the dry matter of French fries. The French fries were prepared from tubers of the Innovator variety of potato (Solanum tuberosum L.). Acrylamide contents were determined by HPLC-UV/Vis on a C-18 column after extraction of fried potatoes with acetonitrile. Potato tubers exposure to UV-C radiation caused an increase in acrylamide content and the soaking of semi-products in water caused a decrease in acrylamide content in the dry matter of French fries.

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Effects of ethanol and ultraviolet-c treatments on inactivation of Rhizopus oryzae spores which cause postharvest rot

Cited by 5 publications

References 25 publications

Clinical and mycological investigations of post‐COVID‐19 acute invasive fungal sinusitis

Clinical and mycological investigations of post‐COVID‐19 acute invasive fungal sinusitis

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Effect of Potato Tuber Exposure to UV-C Radiation and Semi-Product Soaking in Water on Acrylamide Content in French Fries Dry Matter

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