Fungal communities are more sensitive to mildew than bacterial communities during tobacco storage processes

Zhou, Jiaxi; Liu, Jing; Wang, Dongfei; Ruan, Yibin; Gong, Shuang; Gou, Jianyu; Zou, Xiao

doi:10.1007/s00253-023-12882-w

Cited by 2 publications

(3 citation statements)

References 78 publications

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“…Studies have shown that Aspergillus fungi, known for their wide distribution in various environments, thrive in moldy edible grains, feeds, and stored tobacco leaves. Their significant role in tobacco leaf mold may be attributed to their biological characteristics, such as their environmental adaptability, growth rate, and metabolic product diversity ( Park et al, 2005 ; Hajjaji et al, 2006 ; Kuiper-Goodman et al, 2010 ; Senbeta and Gure, 2014 ; Zhou et al, 2024 ). Additionally, A. piperis and A. sydowii were not present on the healthy tobacco leaves, indicating that these fungal species may only grow in specific conditions or may respond to changes in specific environmental factors such as humidity, temperature, and nutrient availability during the molding process ( Abarca et al, 2001 ; Hope et al, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

“…infestations can cause tobacco leaves to exhibit ecotoxicological characteristics ( Fleurat-Lessard, 2017 ; Ye et al, 2017 ; Smyth et al, 2019 ). The green and black pigments released by these molds during infection, along with secreted toxins and the strong moldy odor they produce, affect cigar quality and pose a certain health risk to consumers ( Pauly and Paszkiewicz, 2011 ; Zhou et al, 2024 ).…”

Section: Introductionmentioning

confidence: 99%

“…Cigar tobacco is susceptible to mold contamination during air-curing, primarily due to the combined effect of various factors, particularly nutrients. The growth of mold pathogens relies on specific nutrients during the cigar tobacco drying process ( Zhou et al, 2024 ). These pathogens mainly include Aspergillus , Penicillium , and Fusarium , which can utilize various organic compounds provided by cigar tobacco as energy and nutritional sources.…”

Section: Introductionmentioning

confidence: 99%

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Analyzing the quality differences between healthy and moldy cigar tobacco leaves during the air-curing process through fungal communities and physicochemical components

Fu,

Song,

Cui

et al. 2024

Front. Microbiol.

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IntroductionThe air-curing process of cigar tobacco, as a key step in enhancing the quality of cigars, is often susceptible to contamination by mold spores, which severely constrains the quality of cigar tobacco.MethodsThis study employed high-throughput Illumina sequencing technology and a continuous flow analysis system to analyze the differences between the microbial communities and physicochemical components of moldy and healthy cigar tobacco leaves. Furthermore, correlation analysis was performed to reveal the impact of mold on the quality of cigar tobacco.ResultsThe differences between the microbial flora and physicochemical compositions of moldy (MC) and healthy (HC) tobacco leaves were analyzed, revealing significant disparities between the two groups. Aspergillus spp. represented the dominant mold in MC, with nine out of twelve isolated molds showing higher quantities on MC than on HC. Mold contamination notably decreased the total nitrogen (TN), total phosphorus (TP), total alkaloids (TA), starch, protein, and flavor constituents while increasing the total fatty acid esters (TFAA), which was accompanied by a shift towards weakly acidic pH in the leaves. Fungal community analysis indicated a significant reduction in the fungal operational taxonomic unit (OUT) numbers and diversity indices in MC, contrasting with the bacterial trends. Aspergillus exhibited significantly higher relative abundance in MC, with LEfSe analysis pinpointing it as the primary driver of differentiation. Furthermore, significant negative correlations were observed between Aspergillus and TP, starch, TA, and protein, while a significant positive association was evident with TFAA. Network analysis underscored the pivotal role of Aspergillus as the species influencing disparities between HC and MC, with its abundance serving as a critical determinant during the air-curing process.DiscussionThis study elucidated substantial quality distinctions between MC and HC during air-curing, with Aspergillus emerging as the key species contributing to leaf mold.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analyzing the quality differences between healthy and moldy cigar tobacco leaves during the air-curing process through fungal communities and physicochemical components

Fu,

Song,

Cui

et al. 2024

Front. Microbiol.

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Progress of research on aroma absorption mechanism and aroma fixation pathway of jasmine green tea

Wang,

Huang,

Zhou

et al. 2024

J Sci Food Agric

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This overview summarizes the latest research progress on the aroma absorption mechanism and aroma fixation pathway of jasmine green tea, and discusses in depth the aroma absorption mechanism of green tea, the aroma release mechanism of jasmine flowers, as well as the absorption and fixation mechanism of the aroma components of jasmine green tea in the process of scenting, to provide a theoretical basis for the improvement of the quality of jasmine green tea and the innovation of processing technology. It was found that the aroma absorption mechanism of jasmine green tea is mainly associated with both physical and chemical adsorption, aroma release in jasmine involves the phenylpropanoid/benzoin biosynthetic pathway, β‐glycosidase enzymes interpreting putative glycosidic groups, and heat shock proteins (HSPs) as molecular chaperones to prevent stress damage in postharvest flowers due to high temperatures and to promote the release of aroma components, and so forth. The preparation of aroma‐protein nano‐complexes, heat stress microcapsules, and the spraying of polymeric substances – β‐cyclodextrin are three examples of aroma‐fixing pathways. This overview also summarizes the problems and future development trends of the current research and proposes the method of loading benzyl acetate, the main aroma component of jasmine, through konjac glucomannan (KGM)‐based gel to solve the problem of volatile aroma and difficult‐to‐fix aroma, which provides a reference for the sustainable development of the jasmine green tea industry. © 2024 Society of Chemical Industry.

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Fungal communities are more sensitive to mildew than bacterial communities during tobacco storage processes

Cited by 2 publications

References 78 publications

Analyzing the quality differences between healthy and moldy cigar tobacco leaves during the air-curing process through fungal communities and physicochemical components

Analyzing the quality differences between healthy and moldy cigar tobacco leaves during the air-curing process through fungal communities and physicochemical components

Progress of research on aroma absorption mechanism and aroma fixation pathway of jasmine green tea

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