WOOD RESEARCH Volume 67, Number 1, 2022
Mengxue Li, Lei Shi, Fuxian Xia, Jiang Deng, Huaijian Liao, Ting Du, and Bingyi Wang

Chemical constituents of the stem in dalbergia sissoo

The chemical constituents of ethyl acetate extracts from heartwood and sapwood of different ages of Dalbergia sissoo were studied by gas chromatography-mass spectrometry. The results showed that the chemical composition of wood heartwood and sapwood is significantly different. In the vertical direction, the type of the ethyl acetate extract from Dalbergia sissoo tends to decrease from the base to the upper portion; in the horizontal direction, the type of extract gradually decreases from the center to the periphery. And it showed an increasing trend with the age of the trees. The experiment also revealed that there were significant differences in chemical components between heartwood and sapwood. We speculated that the main chemical component trismethoxyresveratrol of heartwood extract may be related to the formation of heartwood, and the specific correlation needs to be further verified.

WOOD RESEARCH Volume 66, Number 4, 2021
Li Quan, Ning Ji, Zhanguang Wang, Cuixiang Lu, and Lin Hui

Four solvent extraction of Cinnamomum camphora xylem and analysis of the anti-fungal activity of the extractives

Four solvents including distilled water, acetone, ethyl acetate and petroleum ether were used to extract xylem of C. camphora. The differences in chemical compounds of xylem of C. camphora were analyzed by gas chromatography/mass spectrometry (GC/MS) and the anti-fungal activity of C. camphora extractives on Coriolus versicolor (CV), Trametes versicolor (TV), Poria vaporaria (PP) and Gloeophyllum trabeum (GT) were tested. The result showed that the chemical composition and relative content of the four different solvent extracts were different. A large number of chemical compounds in the C. camphora extractives had a variety of biological activity and certain application value. The growth inhibitory rates of ethyl acetate extracts of C. camphora on PP, CV, TV and GT were 52.24%, 52.51%, 43.26%, and 54.63%, respectively. According to the concentration for 50% of maximal effect, the inhibitory order on test fungus were GT > PP > CV > TV.