food safety – Page 4

Comparative genome analysis of patulin-producing Penicillium paneum OM1 isolated from pears

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Researchers sequenced the complete genome of a mold called Penicillium paneum that produces a toxic substance called patulin, which contaminates apples and pears. They found all 15 genes responsible for making patulin and discovered the mold has similar genetic patterns to other patulin-producing fungi. This information could help scientists develop better ways to prevent patulin contamination on fruit crops and improve food safety.

Knowledge, attitude, and practice on mushroom poisoning among residents of Jilin province

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This study surveyed over 500 residents in Jilin Province about their understanding of mushroom poisoning risks. The results showed that most people had limited knowledge about toxic mushrooms, though many held positive attitudes about food safety. However, knowing about the dangers did not always translate into safer behaviors. The research suggests that better education, especially for rural residents, could help prevent dangerous mushroom poisoning incidents.

Negative Effects of Occurrence of Mycotoxins in Animal Feed and Biological Methods of Their Detoxification: A Review

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Molds that grow on grains and feed produce toxic substances called mycotoxins that can seriously harm farm animals, causing liver and kidney damage, reproductive problems, and reduced productivity. While proper storage and farming practices help prevent contamination, some mycotoxins still get through. Recent research shows that beneficial bacteria like those in yogurt and certain yeasts can effectively remove these toxins from animal feed, making it safer for livestock while protecting the environment from harmful chemicals.

Transcriptome analysis of Ochratoxin A (OTA) producing Aspergillus westerdijkiae fc-1 under varying osmotic pressure

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This research studied how salt concentration affects the production of ochratoxin A, a toxic substance produced by the fungus Aspergillus westerdijkiae that contaminates foods like coffee and grapes. Using advanced genetic analysis, scientists found that moderate salt levels (20 g/L) increase the fungus’s ability to produce this toxin by affecting specific genes. The findings help explain why OTA contamination is more common in salty foods like cured meats and suggest new ways to prevent this contamination and protect food safety.

Nutrivigilance: the road less traveled

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This paper discusses nutrivigilance, which is the monitoring of side effects from dietary supplements and health products. Unlike medicines, dietary supplements in the US don’t need approval before being sold to consumers. The paper explains what nutraceuticals are, how they’re classified, and the different ways the US and Europe try to keep track of harmful effects. The authors argue that better systems are needed, including more reporting from consumers and better communication between companies, regulators, and healthcare providers.

Effects of Temperature, pH, and Relative Humidity on Growth of Penicillium crustosum OM1 Isolated from Pears and Its Penitrem A Production

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Researchers found that a mold called Penicillium crustosum produces a dangerous neurotoxin called penitrem A that can contaminate pears and other foods. The study showed that this mold grows best at cool temperatures (25°C) but produces the most toxin at slightly cooler temperatures (22°C) with neutral acidity and high moisture levels. Understanding these conditions helps us develop better strategies to prevent this toxin from contaminating the fresh fruit we eat.

An evaluation of the occurrence and trends in 137Cs and 40K radioactivity in King Bolete Boletus edulis mushrooms in Poland during 1995–2019

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This study tracked radioactive contamination in King Bolete mushrooms across Poland over 25 years following the 1986 Chernobyl nuclear accident. Researchers found that radioactive caesium levels were highest 10-20 years after the accident, peaking in the 1990s, because radioactive particles slowly moved deeper into soil where mushroom roots feed. While people who eat wild mushrooms from Poland were exposed to some radioactivity, serious health risks were uncommon, and contamination has significantly decreased in recent years.

Modeling of mold inactivation via cold atmospheric plasma (CAP)

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This research develops a mathematical model to predict how cold atmospheric plasma kills mold, which is important because molds produce toxins that harm human and animal health and damage food and buildings. The model uses equations to describe mold growth and plasma effects, allowing researchers to predict outcomes in minutes rather than waiting weeks for lab experiments. The study found that plasma is most effective when its killing power matches the mold’s natural growth rate, causing complete extinction.

Comparative genome analysis of patulin-producing Penicillium paneum OM1 isolated from pears

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This research examined the genetic makeup of a mold called Penicillium paneum that contaminates pears and apples by producing a toxic substance called patulin. Scientists sequenced the entire genome and identified all the genes responsible for patulin production. They found that this mold has 33 different gene clusters for producing various toxic compounds, with the patulin-producing genes being highly similar to those in other related molds. This genetic knowledge could help develop better strategies to prevent patulin contamination in fruit crops.

Modelling the Combined Effects of Oxalic Acid, Water Activity, and pH on the Growth and Mycotoxin Production of Aspergillus spp. in a Dried Fig System

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Dried figs can become contaminated with harmful fungi that produce dangerous toxins during the drying process. Researchers used mathematical modeling to understand how water content, acidity, and oxalic acid treatment affect fungal growth and toxin production in figs. They found that reducing water content is the most effective way to prevent dangerous toxin buildup. These models help the fig industry identify and avoid conditions that promote contamination, ultimately making dried figs safer for consumers.

Research Topic: food safety