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The dry rot fungus Serpula lacrymans is a devastating basidiomycete occurring in wooden constructions in temperate regions worldwide. In this study, we compare the genetic structures of two invasive populations from Europe and Japan. Microsatellite data from 14 loci and DNA sequences from four loci demonstrated that the two populations were highly(More)
To improve the taste profile of glycyrrhizin (1, the saponin of licorice root, relative sweetness to sucrose: x170), a variety of 3-O-glycosides of glycyrrhetic acid were prepared and their sweetness evaluated. It was found that a significant enhancement of sweetness was observed for the 3-O-beta-D-xyloside and the 3-O-beta-D-glucuronide (MGGR). Especially,(More)
The dry rot fungus Serpula lacrymans (Basidiomycota) is the most damaging destroyer of wood construction materials in temperate regions. While being a widespread aggressive indoor biodeterioration agent, it is only found in a few natural environments. The geographical source of spread and colonization by this fungus in human environments is thus somewhat of(More)
Antifeedant activity of some flavonoids and their related compounds against the subterranean termiteCoptotermes formosanus Shiraki was examined with nochoice tests and two-choice tests. The activities of these compounds were evaluated in relation to their chemical structures. All flavonoids tested showed antifeedant activity, whereas catechinic acid,(More)
The effect of heating on the hygroscopicity of Japanese cedar wood was investigated as a simple evaluation of thermal degradation in large-dimension timber being kiln-dried at high temperatures (>100°C). Small wood pieces were heated at 120°C in the absence of moisture (dry heating) and steamed at 60°, 90°, and 120°C with saturated water vapor over 2 weeks,(More)
Japanese cedar wood specimens were steamed at 80°, 100°, and 120°C over 14 days, and their equilibrium moisture content (M) at 20°C and 60% relative humidity, longitudinal dynamic Young’s modulus (E), bending strength (σ max), and breaking strain (ε max) were compared with those of unheated specimens. Steaming for a longer duration at a higher temperature(More)
Gamma Ray Log Scanner. Scand. J, For. Res. pp. 583-590. Lindgren, L. O. 1991: Medical CAT-scanning: X-ray absorption coefficients, CT-numbers and their relation to wood density. Wood Science and Technology. 25: 341-349. Richard, M. D.; Lippmann, R. P. 1991: Neural Network Classifiers Estimate Bayesian a posteriori Probabilities. Neural Computation 3, pp.(More)
Acetone extracts from the bark of 51 different deciduous tree species were investigated to determine their antifungal activity against plant pathogenic and wood decay fungi. In general, the deciduous trees showed only weak activities. The genusMagnolia, especiallyM. Obovata, however had potent antifungal activity. Acetonextrakte der Rinde von 51(More)
The acetone extract of the bark ofMagnolia obovata Thunb. had potent antifungal activity against plant pathogenic and wood destroying fungi. The active principles were isolated and identified to be eudesmols (I), magnolol (II) and honokiol (III). Eudesmols, which are main components of the volatile bark oil, showed strong antifungal activity against all of(More)
The effects of stilbene glucosides and related compounds on termite feeding behavior were investigated using paper disc methods against the subterranean termite Reticulitermes speratus. The stilbene-rich fraction and isorhapontin (3′-methoxy-3,4′, 5-trihydroxystilbene-3-β-d-glucoside) from bark extracts of Picea glehnii showed avoidance by termites in(More)