Phytochemical and Anti-Termite Efficiency Study of Guibourtia tessmanii (harms) J. Léonard (Kévazingo) Bark Extracts from Gabon

Q2 Engineering Journal of the Korean wood science and technology Pub Date : 2022-03-01 DOI:10.5658/wood.2022.50.2.113

Ley-Fleury ELLA NKOGO, C. S. A. BOPENGA BOPENGA, Franck-Estime Ngohang, L. Mengome, Sophie Aboughe Angone, P. Edou Engonga

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引用次数: 7

Abstract

This study aimed to explore the biodiversity of chemical compounds found in the bark of Guibourtia tessmannii from Gabon, commonly called Kévazingo, and evaluate their anti-termite activity to determine their potential values as a source of development of anti-termite products that can be valued in the fields of fine chemicals and wood preservation. Extraction of G. tessmannii bark powders was carried out using the cold maceration method with trichloroethylene, acetone, ethanol, and water. Phytochemical screening made it possible to highlight groups of chemical families present in the extracts. Anti-termite activity was tested on the wild termites “Cubitermes sp” of the genus Isoptera. The yield of the extracts were 17.11% for the buttress and 13.42% for the height at 6 m. Phytochemical tests revealed that alkaloids, polyphenols, sterols, tannins, reducing compounds, flavonoids, saponins, and anthraquinones were present in the extracts. Results of anti-termite activity indicated that anti-termite activity varied with the different parts of the bark studied, extraction solvent, and concentration (50/50) and (25/75) of the extracts used. The extracts at 50/50 concentration showed a slightly better anti-termite activity compared to the 25/75 concentration. In addition, the buttress Kévazingo or buttress showed the strongest anti-termite activity for the aqueous extract with a survival rate of 0% after 2 days.

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加蓬革叶树皮提取物的植物化学及灭白蚁效果研究

本研究旨在探索加蓬Guibourtia tessmannii（通常称为Kévazingo）树皮中发现的化合物的生物多样性，并评估其抗白蚁活性，以确定其作为开发抗白蚁产品的潜在价值，该产品可在精细化学品和木材保护领域发挥价值。以三氯乙烯、丙酮、乙醇和水为溶剂，采用冷浸渍法提取了苔皮粉。植物化学筛选使得突出提取物中存在的化学家族组成为可能。对等翅目野白蚁“Cubitemes sp”进行了白蚁防治试验。扶壁和6米高度的提取物产量分别为17.11%和13.42%。植物化学测试表明，提取物中含有生物碱、多酚、甾醇、单宁、还原性化合物、黄酮、皂苷和蒽醌。抗白蚁活性的结果表明，抗白蚁活性随所研究树皮的不同部位、提取溶剂以及所用提取物的浓度（50/50）和（25/75）而变化。与25/75浓度相比，50/50浓度的提取物显示出略好的抗白蚁活性。此外，扶壁Kévazingo或扶壁对水提取物表现出最强的抗白蚁活性，2天后存活率为0%。

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来源期刊

Journal of the Korean wood science and technology Materials Science-Materials Science (miscellaneous)

CiteScore

5.20

自引率

0.00%

发文量

期刊介绍： The Journal of the Korean Wood Science and Technology (JKWST) launched in 1973 as an official publication of the Korean Society of Wood Science and Technology has been served as a core of knowledges on wood science and technology. The Journal acts as a medium for the exchange of research in the area of science and technology related to wood, and publishes results on the biology, chemistry, physics and technology of wood and wood-based products. Research results about applied sciences of wood-based materials are also welcome. The Journal is published bimonthly, and printing six issues per year. Supplemental or special issues are published occasionally. The abbreviated and official title of the journal is ''J. Korean Wood Sci. Technol.''. All submitted manuscripts written in Korean or English are peer-reviewed by more than two reviewers. The title, abstract, acknowledgement, references, and captions of figures and tables should be provided in English for all submitted manuscripts.