volatile organic compounds – Page 3

Insights into Physicochemical Characteristics, Flavor Development, and Microbial Succession During the Natural Fermentation of Sichuan-Style Black Soybean Soy Sauce

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This research reveals how Sichuan-style black soybean soy sauce develops its distinctive complex flavor over six months of natural fermentation. The study tracked changes in taste and aroma compounds, identifying key flavor contributors like methional (sauce-like) and 1-octen-3-ol (mushroom-like). Different microorganisms dominate at different fermentation stages, with early-stage fungi breaking down proteins and later-stage bacteria and yeasts creating aromatic compounds. The findings provide insights for improving traditional soy sauce production methods.

Diversity and functions of fungal VOCs with special reference to the multiple bioactivities of the mushroom alcohol

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Fungi release various volatile compounds (VOCs) that have different effects on organisms and the environment. The most notable fungal VOC is 1-octen-3-ol, also called mushroom alcohol, which gives mushrooms their distinctive smell. This compound can inhibit fungal growth, repel insects, and help control plant diseases, but at high concentrations it may be toxic to humans and trigger immune responses. Scientists use fruit flies as a model to study how these fungal compounds affect health.

Soil Allies: Exploring the Combined Potential of Folsomia candida and Trichoderma spp. Against Fusarium oxysporum

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This study explores how springtails and beneficial fungi called Trichoderma can work together to fight a harmful soil fungus that damages cape gooseberry crops. The springtails preferentially eat the pathogenic fungus while avoiding the beneficial Trichoderma, allowing it to persist and do its job. Both organisms independently reduce the harmful fungus, suggesting they could be used together as an eco-friendly alternative to chemical fungicides.

Strain and contact-dependent metabolomic reprogramming reveals distinct interaction strategies between Laccaria bicolor and Trichoderma

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Scientists studied how two types of fungi interact with each other when grown together. One fungus (Trichoderma) is used as a biocontrol agent to fight harmful fungi, while the other (Laccaria) helps trees grow. By analyzing the chemicals these fungi release both as gases and through their growth medium, researchers found that the fungi communicate and compete with each other differently depending on how close they are. These findings help us understand how fungi interact in soil and could improve the use of biocontrol agents in agriculture.

Ascosphaera apis as a target for the antifungal activity of symbiotic Bifidobacteria in honey bees

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Researchers found that certain beneficial bacteria (Bifidobacterium asteroides) living in honey bee guts can fight the fungus that causes chalkbrood disease, a serious condition affecting bee colonies. These bacteria produce natural compounds, especially propanoic acid and ethanol, that kill the fungus and prevent it from growing. This discovery offers a safe, natural alternative to chemical treatments for protecting honeybees from fungal infections while maintaining colony health.

The differences between broad bean koji fermented in laboratory and factory conditions by an efficient Aspergillus oryzae

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This study compared how two types of A. oryzae fungi ferment broad beans to make koji, a starter ingredient for Chinese broad bean paste. Researchers tested the same fungi in small laboratory batches and large factory batches to see if what works in the lab also works in industry. They found that the factory’s larger scale and different environment actually had a bigger impact on the final product than which specific fungus strain was used, though the PN strain was still efficient overall.

Antifungal and other bioactive properties of the volatilome of Streptomyces scabiei

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Researchers discovered that Streptomyces scabiei, a bacterium that causes common scab disease in potatoes and other root crops, produces numerous airborne chemical compounds with surprising benefits. Using advanced chemical analysis, they identified 36 different volatile molecules, many of which can kill harmful fungi and promote plant health. This discovery suggests the bacterium’s role in nature is more complex than previously thought, as it may actually help protect plants while causing disease, opening new possibilities for developing natural pest control solutions.

First Step on the Way to Identify Dermatophytes Using Odour Fingerprints

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Researchers have developed a new method to quickly identify fungal skin infections caused by dermatophytes by detecting the unique smells (volatile compounds) they produce. Instead of waiting days or weeks for culture-based tests, this approach uses advanced chemical analysis to create a fingerprint of the fungus based on its odor. The study analyzed 47 different dermatophyte strains and found that each species and even individual strains have distinctive chemical signatures, which could one day allow doctors to diagnose infections rapidly using portable devices similar to electronic noses.

Volatile Metabolome and Transcriptomic Analysis of Kosakonia cowanii Ch1 During Competitive Interaction with Sclerotium rolfsii Reveals New Biocontrol Insights

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Researchers found that a bacterium called K. cowanii produces special gases (volatile organic compounds) that kill fungal plant diseases like those caused by Sclerotium rolfsii. When grown together with this fungus, the bacterium produces these toxic gases which inhibit fungal growth by up to 80%. The study identified specific genes the bacteria activate to produce these antifungal compounds, offering a natural alternative to chemical fungicides for protecting crops.

Antifungal Volatile Organic Compounds from Talaromyces purpureogenus CEF642N: Insights from One Strain Many Compounds (OSMAC) Strategy for Controlling Verticillium dahliae in Cotton

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Scientists discovered that a beneficial fungus called Talaromyces purpureogenus can produce powerful antifungal compounds that kill cotton wilt disease. By growing this fungus on different nutrient media, researchers identified two main antifungal compounds: 3-octanol and 2-octenal. These natural compounds completely or nearly completely stopped the growth of the cotton wilt pathogen in laboratory tests, offering a promising green alternative to chemical pesticides for protecting cotton crops.

Research Keyword: volatile organic compounds