The antifungal effects of cinnamaldehyde against Aspergillus niger and its application in bread preservation

In this study we examined the antifungal efficiency of CIN against Aspergillus niger in vitro. In addition, we explored its mode of action and evaluated its application potential in bread preservation in situ. The results showed that CIN exerted different levels of antifungal activity through different treatments, wherein it showed the highest antifungal activity in the liquid broth test, followed by solid contact and gas diffusion methods. On the other hand, ultrastructure observation, propyl iodide staining and ergosterol detection showed that CIN may damage the cell ultrastructure and membrane integrity in a dose dependent manner. Besides, the content of reactive oxygen species and malondialdehyde were, respectively, 2.74 and 2.07 times higher in fungi treated with 100 μg/mL of CIN, compared with those in untreated fungi. Finally, shelf life experiment showed that, in the vapor phase, CIN can efficiently prolong the shelf life of bread. Altogether, these results indicate that CIN can be used as an alternative food preservative due to its antifungal effects that are exerted, at least in part in A. niger, through the induction of oxidative stress, which caused cell damage and increased membrane permeability.Graphical abstractsCinnamaldehyde could be regarded as a prominsing and an effective substitute for chemical synthetic preservatives in order to control fungal contamination and improve the shelf life of baked foods by modulating oxidative stress response and redox sta...
Source: Food Chemistry - Category: Food Science Source Type: research

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Publication date: Available online 3 April 2020Source: LWTAuthor(s): Oladapo Oluwaseye Olukomaiya, W. Chrishanthi Fernando, Ram Mereddy, Xiuhua Li, Yasmina Sultanbawa
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
Penicillium expansum is one of the most harmful post-harvest pathogens of pomaceous fruits and the causal agent of blue rot disease. During infection, P. expansum produces the toxic secondary metabolites patulin and citrinin that can impact virulence and, further, render the fruit inedible. Several studies have shown that epigenetic machinery controls synthesis of secondary metabolites in fungi. In this regard, the epigenetic reader, SntB, has been reported to govern the production of multiple toxins in Aspergillus species, and impact virulence of plant pathogenic fungi. Here we show that deletion of sntB in P. expansum re...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Low moisture content ready-to-eat foods vended in Nigerian markets could be pre-packaged or packaged at point of sale. These foods are widely and frequently consumed across Nigeria as quick foods. Despite their importance in the daily diets of Nigerians, a comprehensive study on the diversity of fungi, fungal metabolite production potential, and mycotoxin contamination in the foods has not yet been reported. Therefore, this study assessed the diversity of fungi in 70 samples of low moisture content ready-to-eat foods [cheese balls, garri (cassava-based), granola (a mix of cereals and nuts) and popcorn] in Nigeria by applyi...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Authors: Sehgal IS, Dhooria S, Muthu V, Prasad KT, Agarwal R Abstract Introduction: Chronic pulmonary aspergillosis (CPA) is a chronic infection of the lung parenchyma caused by Aspergillus fumigatus complicating structural lung diseases. Of the different types of CPA, chronic cavitary pulmonary aspergillosis (CCPA) is the most common form. Untreated, most patients with CCPA will progress to chronic fibrosing pulmonary aspergillosis. The mainstay of treatment of CCPA is oral triazoles. However, many gaps exist in clinical decision-making about the agent of choice, the duration, and the assessment of treatment respo...
Source: Expert Review of Respiratory Medicine - Category: Respiratory Medicine Tags: Expert Rev Respir Med Source Type: research
Wed, 04/08/2020 - 14:13News blog
Source: The Aspergillus Website - updates - Category: Respiratory Medicine Authors: Source Type: news
ConclusionOur results showed that there is no difference in the FEV1 and forced vital capacity betweenAspergillus positive and negative patients in any asthma severity group.
Source: The Clinical Respiratory Journal - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLE Source Type: research
Abstract Twelve indole alkaloids, including α-cyclopiazonic acid (CPA) (1), nine 2-oxo indole CPA derivatives (2-10), and two open-ring indole CPA derivatives (11 and 12), were isolated from the fermentation broth of a deep-sea derived fungus Aspergillus sp. SCSIO 41024. Their structures and absolute configurations were elucidated mainly by using extensive NMR spectroscopic, mass spectrometric and single crystal X-ray diffraction analysis. To the best of our knowledge, the crystallographic data of 3 and 7 were firstly reported, and the absolute configuration of 3 was confirmed for the first time by the singl...
Source: Natural Product Research - Category: Biochemistry Authors: Tags: Nat Prod Res Source Type: research
Abstract In vitro and in vivo interactions of minocycline and azoles including itraconazole, voriconazole, and posaconazole against filamentous pathogenic fungi were investigated. A total of 56 clinical isolates were studied in vitro via broth microdilution checkerboard technique, including 20 strains of Aspergillus fumigatus, 7 strains of A. flavus, 16 strains of Exophiala dermatitidis, 10 strains of Fusarium solani and 3 strain s of F. oxysporum The results revealed that minocycline individually did not exhibit any significant antifungal activity against all tested strains. However, favorable synergy of minocycl...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research
Authors: Kaur P, Kumar P, Randev S, Guglani V Abstract Allergic bronchopulmonary aspergillosis (ABPA) is an immunological disease complicating asthma or cystic fibrosis. An 8-year-old girl with no previous respiratory morbidity was diagnosed with ABPA on the basis of a raised eosinophil count and total and specific serum IgE levels combined with a positive skin-prick test for aspergillus and typical CT images of finger-in-glove hilar opacities and hyperattenuating mucous. She responded to treatment with itraconazole and corticosteroids and remains well. As far as we are aware, she is only the second child to be dia...
Source: Paediatrics and international child health - Category: Pediatrics Tags: Paediatr Int Child Health Source Type: research
Abstract The present study focused on phosphorus adsorption by novel fungal conidiophores biomass in aqueous solution. Fungal Conidiophores biomass was prepared from the fungal strains Aspergillus oryzae (YFK) and Fusarium oxysporum (YVS2). The functional groups and morphology of Conidiophores Biomass (CB) from these strains were characterized by FTIR and SEM. FTIR confirms the presence of alcohol, carboxylic acid, carbon dioxide, cyclic alkene, amine, alkene, fluoro compound, and halo compound groups. Batch mode study was carried out with two CB's such as Aspergillus oryzae CB (ACB) and Fusarium oxysporum CB (FCB...
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Tags: Environ Sci Pollut Res Int Source Type: research
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