关键词: 蚂蚁, 植物源, 驱避效果, 筛选

Abstract:

Objective Twenty-two plant extracts were screened for satisfyingly effective repelling agents against ant (Formica fusca), providing the basis for developing efficient, nontoxic and green ant repellents. Methods Using 95% alcohol and water as solvents, the ultrasonic extracts were evaluated in terms of the repellents activities, which were represented by their repellent rates against ants. The t test was performed using SPSS to compare the differences in the repellency rate. Results Satisfactory repelling effects were observed in such alcoholic extracts as Syringa oblate, Zanthoxylum schinifolium, Fructus, Schisandra chinensis and Cinnamomum cassia, with the average repellent rates of 86.9%, 83.9%, 81.3% and 91.2% respectively, followed by Acorus tatarinowii, Herba menthae heplocalycis, Santalum album, Kochia scparia, Illicium verum and Allium sativum, with the average repellency rates ranging from 60% to 80%. By contrast, the average repellent rate of water extracts was under 80%, of which the outstanding representatives were Fructus, S. chinensis and C. cassia with the average repellent rates of 60.9% and 76.2% respectively, followed by I. verum hook. f, Datura stramonium Linn and A. sativum L. with the rates between 50% and 60%. The t test Results showed that water and alcoholic extracts had significantly different repelling effects. Conclusion The repelling effects of 95% alcoholic botanical extracts were significantly better than the water extracts against ants. No matter the solvent was water or alcohol, C. cassia was the best repellent among the 22 botanical extracts.

Key words: Ants, Botanical, Repellent effect, Screening