fungal contamination

Fusarium spp. in Metalworking Fluid Systems: Companions Forever

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Researchers analyzed over 48,000 metalworking fluid samples from machines worldwide over 10 years and found that fungal contamination is very common, especially on machine surfaces. While companies add chemicals called fungicides to prevent fungal growth, these chemicals have limited effectiveness and fungi often survive or adapt to them. As regulations increasingly restrict these fungicides, the manufacturing industry will need to find new ways to prevent fungal contamination by changing the chemical composition of metalworking fluids themselves.

Barcode high-resolution melting (Bar-HRM) analysis to authenticate true cinnamon (Cinnamomum verum) from its adulterants and contaminants

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This study developed a rapid and cost-effective DNA test to verify that cinnamon products are authentic true cinnamon (Ceylon cinnamon) rather than cheaper substitutes. The test uses DNA barcoding and melting curve analysis to distinguish true cinnamon from three common adulterants and can also detect contamination with a toxic fungus. The method is particularly useful for processed cinnamon products like powder where traditional identification methods don’t work, helping protect consumers and maintain market integrity for authentic Sri Lankan cinnamon.

Phylogeny of Aspergillus section Circumdati and inhibition of ochratoxins potential by green synthesised ZnO nanoparticles

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Researchers identified four species of Aspergillus fungus that contaminate crops and produce poisonous compounds called ochratoxins. They found that specially made zinc oxide nanoparticles, created using an environmentally friendly method with basil extract, can significantly reduce the amount of ochratoxins produced by these fungi. This discovery could help protect agricultural products from contamination and improve food safety.

Occurrence of Aspergillus and Penicillium Species, Accumulation of Fungal Secondary Metabolites, and qPCR Detection of Potential Aflatoxigenic Aspergillus Species in Chickpea (Cicer arietinum L.) Seeds from Different Farming Systems

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This study examined chickpea seeds purchased from stores to check for dangerous fungi and toxins they produce. Researchers found that organic chickpeas had more fungal contamination than conventionally grown ones. While most of the dangerous fungi didn’t produce harmful toxins in the seeds, their presence suggests chickpeas should be regularly tested to keep consumers safe.

The predominance of Penicillium, Mucor, and Yarrowia among spoilage fungi in cultured dairy products produced by 3 manufacturers, as revealed by amplicon sequencing

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Researchers identified which molds and yeasts cause yogurt and other cultured dairy products to spoil by analyzing 200 contaminated samples from 3 manufacturers. Three types of fungi—Penicillium, Mucor, and Yarrowia—were responsible for over 70% of the spoilage cases. Interestingly, these fungi were still found in products containing preservatives, suggesting they can resist or break down common food preservatives. The study shows that using DNA sequencing to identify these organisms is more accurate and helpful than traditional methods, allowing dairy manufacturers to develop better strategies to prevent contamination.

Photo Quiz: Unexpected yeast in a premature infant—pathogen or passenger

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A newborn baby born very prematurely developed a yeast organism called Malassezia pachydermatis in a sputum sample, which was identified in the hospital laboratory. Researchers investigated whether this yeast was causing a serious infection or was just a harmless colonizer. Follow-up testing showed no infection, and the baby improved without antifungal treatment, suggesting it was contamination rather than true disease. However, this finding is important because this yeast has been known to cause serious infections in premature babies in hospital settings.

Changes in the microflora on the seed surface and seed vigor of maize (Zea mays) under different conditions

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When maize seeds are stored in humid conditions, harmful fungi multiply rapidly and damage the seed’s ability to germinate and grow. This study found that seeds stored at 91% humidity lost 86% of their germination ability within 60 days, compared to seeds stored in drier conditions. The fungi deplete the seed’s energy reserves and trigger oxidative damage, ultimately destroying the seed’s viability. Understanding these changes helps farmers and seed producers maintain seed quality during storage.

mGem: Submarine mycology—an analog to astromycology

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Scientists are studying fungi in submarines to better understand fungal health risks for astronauts in space. Both submarines and spacecraft are enclosed environments where fungi can grow, causing infections and other health problems. The same types of fungi found growing in submarines have been detected on the International Space Station. By learning from decades of submarine research, space agencies can better prepare for and prevent fungal-related health issues during long space missions.

Analysis of the correlation between the distribution of microorganisms carried by Coix seed and fungal toxins, and the biological control of aflatoxin

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Coix seeds are popular in traditional Chinese medicine and food, but they can become contaminated with harmful fungi that produce toxins called mycotoxins. This study examined which fungi grow in Coix seeds from different regions and found that certain bacteria called Bacillus can effectively prevent dangerous mold from growing and producing toxins. By using these beneficial bacteria, producers can keep Coix seeds safer for people to consume as medicine or food.

Research Topic: fungal contamination