Chamaecyparis obtusa (C. obtusa) is known to have antimicrobial effects and has been used as a medicinal plant and in forest bathing. This study aimed to evaluate the anticariogenic activity of essential oil of C. obtusa on Streptococcus mutans, which is one of the most important bacterial causes of dental caries and dental biofilm formation. Essential oil from C. obtusa was extracted, and its ...

In the course of our research for biologically active constituents from coniferous plants, a chromone derivative (1) and an abietane derivative (2) were isolated along with several diterpenes from Chamaecyparis pisifera. Structures of the new compounds were determined to be 5,7-dihydroxy-2-(1-acetyl-2-methoxycarbonylethyl)-chromone and rel-(8R,10R,20S)-8,10,20-trihydroxy-9(10-->20)-abeo-abieta-...

The biocidal activity of three steam distilled wood essential oils-incense cedar, Calocedrus decurrens (Torr.) Florin; Port-Orford-cedar, Chamaecyparis lawsoniana (A. Murr.) Parl.; and western juniper, Juniperus occidentalis (Hook)--were evaluated against adult Aedes aegypti (L.) (Diptera: Culicidae) and Xenopsylla cheopis (Rothchild) (Siphonaptera: Pulicidae) and nymphal Ixodes scapularis Say ...

Chamaecyparis obtusa (Siebold & Zucc.) Endl. (Cupressaceae) is known to produce a variety of antimicrobial substances. In the present study, components three lots essential oil from C. were analyzed by GCMS. It was confirmed that thujopsene and pinene common markers. addition, we report indoor space disinfectant effects products containing (PO100, PO500, PO1000). PO100 PO500 could effective...

Substrate reaction is one of the most important agrochemical indices which affect the plants by their different requirements from this point of view. Substrate reaction or pH is determinate by the presence in the liquid phase of H ions, as result of the ionic equilibrium between liquid phase and solid phase. Some species prefer an acid pH and other accept a large scale of pH, so it is important...

Abstract Precious cultural assets of East Asia are found worldwide and hold many important art-historical meanings, for example Buddhist statues. In this study, we conducted wood identification Japanese Chinese statues owned by the Museum Fine Arts, Boston, USA. From eight sculptures one sculpture, 15 samples were collected. The anatomical features these scrutinized using synchrotron X-ray micr...