volatile organic compounds

Impact of Volatile Organic Compounds on the Growth of Aspergillus flavus and Related Aflatoxin B1 Production: A Review

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Aspergillus flavus is a dangerous fungus that produces aflatoxin B1, a poison that can cause serious diseases and survives even when food is heated. Scientists have discovered that certain smelly chemicals called volatile organic compounds, produced by other organisms or plants, can stop this fungus from growing and making its toxin. This research suggests these natural chemicals could be used to protect our crops and food supply from contamination.

Metabolite Profiles and Biological Activities of Different Phenotypes of Beech Mushrooms (Hypsizygus marmoreus)

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This study compared white and brown varieties of beech mushrooms, which are popular edible mushrooms in South Korea. Brown beech mushrooms were found to have higher levels of beneficial compounds called phenolics, which give them a more bitter taste and brown color. The research showed that brown mushrooms have stronger health-promoting properties, including better abilities to fight bacteria, reduce inflammation, and combat oxidative stress, making them potentially more valuable as functional foods for health and nutrition.

A comparison of the performance of bacterial biofilters and fungal–bacterial coupled biofilters in BTEp-X removal

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Researchers compared two types of biofilters for cleaning polluted air from petrochemical plants. Fungal-bacterial biofilters significantly outperformed bacterial-only biofilters at removing harmful aromatic chemicals. The combined system recovered faster after interruptions and remained stable longer during continuous operation, making it more practical for industrial applications.

Inhibitory and synergistic effects of volatile organic compounds from bat caves against Pseudogymnoascus destructans in vitro

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Researchers discovered that two natural compounds found in bat cave environments—isovaleric acid and ethyl methyl carbonate—can effectively kill the fungus that causes white-nose syndrome in bats. When used together, these compounds work even better than alone, disrupting the fungus’s cell membranes, causing it to produce too many reactive molecules (free radicals), and triggering cell death. This discovery offers hope for developing new treatments to protect bat populations that have been devastated by this disease in North America.

Environmental pollution and its impact on hypertension: a review

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This review explains how environmental pollution from cars, factories, and industrial processes contributes to high blood pressure. Various pollutants like fine dust particles, heavy metals, and chemical vapors damage blood vessels and trigger inflammation in the body, leading to hypertension. Women after menopause and older adults are particularly vulnerable to these effects. The review emphasizes the importance of government policies, public education, and personal awareness in reducing pollution exposure and protecting heart health.

Analysis of Volatile Organic Compounds and Comparison of Heat Resistance Related Gene Expression in Pleurotus ostreatus Under Heat Stress

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This study examined how oyster mushrooms respond to high temperatures at different growth stages. Researchers found that young mycelium and mature fruiting bodies use different strategies to survive heat stress, which affects the flavor compounds they produce. Mycelium produces more of certain volatile compounds under heat stress, while fruiting bodies actually lose their characteristic mushroom flavor compound called 1-Octen-3-ol.

Microbial inactivation and emission of volatile organic compounds in low-heat thermal treatment of infectious healthcare waste

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Hospitals use special devices to sterilize infectious waste, but these machines can release harmful gases into the air. Researchers tested four different types of sterilizers in Tehran hospitals and found that machines with internal shredders work best and produce fewer harmful vapors. Temperature control during the sterilization process is crucial for effectiveness, and hospitals should install better air filtering systems to protect workers and the environment from exposure to these emissions.

The biocontrol potential of endophyte Bacillus velezensis to reduce post-harvest tomato infection caused by Rhizopus microsporus

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Researchers tested a naturally occurring bacteria called Bacillus velezensis as a safe alternative to chemical fungicides for protecting tomatoes from rot-causing mold. The bacteria produces special compounds that can kill or slow down the growth of Rhizopus microsporus, a fungus that commonly spoils tomatoes after harvest. While the results show promise, the effectiveness varied depending on which specific strain of bacteria and mold was used, suggesting more research is needed to fine-tune the approach.

Tour of Truffles: Aromas, Aphrodisiacs, Adaptogens, and More

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Truffles are expensive underground mushrooms prized for their distinctive aromas and flavors, with prices reaching thousands of euros per kilogram. Their unique smell comes from over 300 different chemical compounds, many produced with help from bacteria living in the truffle. Beyond their use as luxury food, truffles contain compounds that may have health benefits including anti-inflammatory and antioxidant properties.

Antifungal mechanism of ketone volatile organic compounds against Pseudogymnoascus destructans

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Researchers discovered that two ketone compounds, 2-undecanone and 2-nonanone, effectively kill Pseudogymnoascus destructans, the fungus that causes white-nose syndrome in bats. Using advanced genetic analysis, they found these ketones work by damaging the fungus’s cell structure, disrupting its energy production, and causing DNA damage. This research provides a foundation for developing new fumigant treatments to protect bat populations from this devastating fungal disease.

Research Topic: volatile organic compounds