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This study was carried out to investigate occurence of microbiales density and characteristics of xylanase produced by those in Janggyeong Panjeon. Cladosporium cladosporioides H1, Penicillium citreonigrum H3, Penicillilum toxicarium H4, Aspergillus versicolor H6, Acremonium alternarium H7 isolated from Janggyeong Panjeon produced xylanase, which had different production rates and specialized activities in an acidic condition. Cladosporium cladosporioides H1, Aspergillus versicolor H6, and Acremonium alternatum H7 produced xylanase at a faster rate than other fungi. A xylanase of Cladosporium cladosporioides H1 and Penicillilum toxicarium H4 showed a high thermostability in an acidic condition. As results, this study may lead to the development of a strategy for preservation of organic cultural heritages.

In Korea, damages to wooden cultural properties by termites have been reported all over the country, including Ulleungdo Island and Jeju Island. In order to reduce the damage caused by termites, most cultural properties damaged by them are treated with fumigation or drug treatment on the soil to kill or repel them. The number of treatments is decreasing due to cost and safety problems, and new methods needed to cope with this situation. After extracting an enzyme by selecting only worker termites from the termites collected in Shinan, Jeonnam, as a result of measuring the enzyme activity using xylan of cellulose and hemicellulose that are the components of wood, the activity of termite intestinal enzymes in xylan was higher than that of cellulose having a high molecular weight. Therefore, in this study, as a result of exploring over 600 species of medicinal plant extracts that inhibit the activity of termite intestinal enzymes using xylan as a substrate, the inhibitory effect was significant in Borneolum Syntheticum, Ephedra sinica, and Menthol. Selected Borneolum Syntheticum, Ephedra sinica, and Menthol's extracts not only inhibited the activity of termite intestinal enzymes, but also confirmed that they have insecticidal activation and inhibitory effects on feeding in the result of the direct treatment.

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