Synergistic antifungal properties of lauraldehyde and geraniol against Aspergillus flavus in pistachio

Xie, Yun; Cao, Yifang; Zhang, Yan; Liu, Fengsong; Xu, Huiling; Zhang, Yousheng

doi:10.1016/j.foodcont.2023.109915

Cited by 7 publications

(2 citation statements)

References 51 publications

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“…Vibrio parahaemolyticus is a halophilic bacterium, which means it needs a lot of salt to thrive (New et al, 2016). PEO contains compounds such as menthol (63%) as its primary compound that can damage bacteria's cell membranes and reduce their ability to develop and propagate (Stević et al, 2014;Xie et al, 2004;Xueuan et al, 2018). Vibrio parahaemolyticus, being a halophilic bacterium, may be more susceptible to this kind of disruption, making it more susceptible to the antimicrobial effects of PEO.…”

Section: Discussionmentioning

confidence: 99%

Antibiofilm mechanism of peppermint essential oil to avert biofilm developed by foodborne and food spoilage pathogens on food contact surfaces

Ashrafudoulla,

Mevo,

Song

et al. 2023

Journal of Food Science

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Establishing efficient methods to combat bacterial biofilms is a major concern. Natural compounds, such as essential oils derived from plants, are among the favored and recommended strategies for combatting bacteria and their biofilm. Therefore, we evaluated the antibiofilm properties of peppermint oil as well as the activities by which it kills bacteria generally and particularly their biofilms. Peppermint oil antagonistic activities were investigated against Vibrio parahaemolyticus, Listeria monocytogenes, Pseudomonas aeruginosa, Escherichia coli O157:H7, and Salmonella Typhimurium on four food contact surfaces (stainless steel, rubber, high‐density polyethylene, and polyethylene terephthalate). Biofilm formation on each studied surface, hydrophobicity, autoaggregation, metabolic activity, and adenosine triphosphate quantification were evaluated for each bacterium in the presence and absence (control) of peppermint oil. Real‐time polymerase chain reaction, confocal laser scanning microscopy, and field‐emission scanning electron microscopy were utilized to analyze the effects of peppermint oil treatment on the bacteria and their biofilm. Results showed that peppermint oil (1/2× minimum inhibitory concentration [MIC], MIC, and 2× MIC) substantially lessened biofilm formation, with high bactericidal properties. A minimum of 2.5‐log to a maximum of around 5‐log reduction was attained, with the highest sensitivity shown by V. parahaemolyticus. Morphological experiments revealed degradation of the biofilm structure, followed by some dead cells with broken membranes. Thus, this study established the possibility of using peppermint oil to combat key foodborne and food spoilage pathogens in the food processing environment.

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Section: Discussionmentioning

confidence: 99%

Antibiofilm mechanism of peppermint essential oil to avert biofilm developed by foodborne and food spoilage pathogens on food contact surfaces

Ashrafudoulla,

Mevo,

Song

et al. 2023

Journal of Food Science

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“…The results of this study are in agreement with the findings of our study, suggesting that the suppressed production of AFB1 may be linked to its inhibitory effect on sporulation. In a study by Xie et al, LA in combination with geraniol, an acyclic monoterpene alcohol found in essential oils, could inhibit the germination of spores and the biosynthesis of AF in A. flavus [67]. Overall, several benzaldehydes have been identified to have potent antiaflatoxigenic activities related to their antifungal activities in Aspergillus species, in which their antifungal activities are through the disruption of the cellular antioxidation of fungi [68].…”

Section: Discussionmentioning

confidence: 99%

A New Benzaldehyde Derivative Exhibits Antiaflatoxigenic Activity against Aspergillus flavus

Jermnak,

Ngernmeesri,

Yurayart

et al. 2023

JoF

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Aflatoxin B1 (AFB1) is the most potent naturally occurring carcinogen for humans and animals produced by the common fungus Aspergillus flavus (A. flavus). Aflatoxin (AF) contamination in commodities is a global concern related to the safety of food and feed, and it also impacts the agricultural economy. In this study, we investigated the AFB1-inhibiting activity of a new benzaldehyde derivative, 2-[(2-methylpyridin-3-yl)oxy]benzaldehyde (MPOBA), on A. flavus. It was found that MPOBA inhibited the production of AFB1 by A. flavus, with an IC50 value of 0.55 mM. Moreover, the inhibition of conidiation was also observed at the same concentration. The addition of MPOBA resulted in decreased transcript levels of the aflR gene, which encodes a key regulatory protein for the biosynthesis of AF, and also decreased transcript levels of the global regulator genes veA and laeA. These results suggested that MPOBA has an effect on the regulatory mechanism of the development and differentiation of conidia, leading to the inhibition of AFB1 production. In addition, the cytotoxicity study showed that MPOBA had a very low cytotoxic effect on the Madin-Darby canine kidney (MDCK) cell line. Therefore, MPOBA may be a potential compound for developing practically effective agents to control AF contamination.

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Transcriptomic and biochemical analyses revealed antifungal mechanism of trans-anethole on Aspergillus flavus growth

Lei,

Li,

Zhang

et al. 2023

Appl Microbiol Biotechnol

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Synergistic antifungal properties of lauraldehyde and geraniol against Aspergillus flavus in pistachio

Cited by 7 publications

References 51 publications

Antibiofilm mechanism of peppermint essential oil to avert biofilm developed by foodborne and food spoilage pathogens on food contact surfaces

Antibiofilm mechanism of peppermint essential oil to avert biofilm developed by foodborne and food spoilage pathogens on food contact surfaces

A New Benzaldehyde Derivative Exhibits Antiaflatoxigenic Activity against Aspergillus flavus

Transcriptomic and biochemical analyses revealed antifungal mechanism of trans-anethole on Aspergillus flavus growth

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