Research Topic: water activity

Biophysical Manipulation of the Extracellular Environment by Eurotium halophilicum

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Eurotium halophilicum is a remarkable fungus found on old books that can survive in extremely dry conditions by using salt crystals to pull water from the air. The fungus covers itself with hair-like structures and produces sticky polymers that help it maintain moisture. This ability to thrive in seemingly dry environments makes it a challenge for museums and libraries trying to preserve old books, and climate change may make this problem worse.

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Damp Buildings: Associated Fungi and How to Find Them

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This review identifies which fungi commonly grow in damp buildings and explains how to find them. It shows that certain fungi like Penicillium chrysogenum and Aspergillus versicolor grow on different building materials when moisture is present. The guide provides information on proper sampling techniques and identification methods that building inspectors and health professionals need to effectively address moldy building problems.

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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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This research develops computer models to predict when dangerous molds grow on dried figs and produce toxins. Scientists tested how wet the figs are, their acidity, and a natural plant compound called oxalic acid affect the growth of two common toxic molds. The study found that drier figs are much safer from toxin production, and while oxalic acid alone isn’t a strong mold-fighter, it can help when combined with other conditions. These models can help the fig industry prevent contamination and keep dried figs safe for consumers.

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