竹材に発生する「かび」とその防黴に関する研究 : 紫外線照射による竹材の防黴

概要

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In order to prevent the mildew on bamboo it was attempted to examine the sterilizing effects of ulrtraviolet irradiation, using the germicidal lamp (15W, Type-GR) of Tokyo Shibaura Denki.1) The conidia of test molds showed on the tangential sections of bamboo the resistance to ultraviolet irradiation in the following order, and the most resistant conidia of Asp. niger which were irradiated at a distance of 10 cm for 35 min. germinated at 30℃ and relative humidity of 90% one day later than the non-irradiated ones. Asp. niger>Alt. tenuis ?>Pull. pullulans>Clad. herbarum and Pen. citrinum 2) When bamboo was kept at 30℃ and relative humidity of 90% after the ultraviolet irradiation at a distance of 10 cm for 35 min., the spontaneous growth of molds on the upper side of a cross section of stem was retarded one day and that on the lower side 12 hrs as compared with the growth on the non-irradiated stem. The tangential and radial sections showed the same resistance to the molds as the upper side of the cross section.3) For the purpose of preventing the mildew on bamboo, the ultraviolet irradiation will be more effective, if the atmospheric germs are simultaneously destroyed by the use of the lamp.
社団法人日本生物工学会の論文
1959-04-15