Aspergillus niger is one of the most active cellulolytic fungi. The roll of drawings in the above picture is mainly infested by A. niger and Chaetomium sp. as identified from the cultures isolated from the deteriorating inner-side of the roll. This culture was maintained on potato dextrose agar slants. Following are the digital pictures of…
This black powdery sheet (!) is not burnt paper, but, paper eaten by fungus. Cellulolytic microorganisms are hiding nicely all around us and are much more destructively powerful than we can expect from the tiny spores. Storage enclosures that were designed and created for protection turned out to be actually working with the deteriogens…
In paper conservation literature, there are many ways and materials advised to be used to remove foxing or at least lighten its scars. Here i am not going to suggest what to use, but would like to mention the importance of a thorough knowledge of chemistry and physics too apart from the deep appreciation of…
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