Efficacy of bornyl acetate and camphene from Valeriana officinalis essential oil against two storage insects

• Published in: Environmental science and pollution research international Vol. 26; no. 16; pp. 16157 - 16165
• Main Authors: Feng, Yi-Xi, Wang, Yang, Chen, Zhen-Yang, Guo, Shan-Shan, You, Chun-Xue, Du, Shu-Shan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2019; Springer Nature B.V
• Subjects: Acetic acid; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Bioassays; Bornyl acetate; Camphene; Constituents; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Essential oils; Herbal medicine; Insects; Liposcelis bostrychophila; Medicinal plants; Oils & fats; Organic chemistry; Pests; Qualitative analysis; Quantitative analysis; Research Article; Toxicity; Valerian; Valeriana officinalis; Waste Water Technology; Water Management; Water Pollution Control; Repellency; Fumigant toxicity; Contact toxicity; Liposcelis bostrychophila; Tribolium castaneum
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-019-05035-y

The essential oil was extracted from the roots of Valeriana officinalis L. by hydrodistillation. The qualitative and quantitative analysis of its chemical constituents was conducted on GC-MS and GC-FID in this study. Seventeen compounds were detected and the major constituents included bornyl acetate (48.2%) and camphene (13.8%). The toxic and repellent effects of the essential oil and its two major constituents were evaluated on Liposcelis bostrychophila and Tribolium castaneum . The results of bioassays indicated that the essential oil showed the promising fumigant and contact toxicity against L. bostrychophila (LC 50  = 2.8 mg/L air and LD 50  = 50.9 μg/cm 2 , respectively) and the notable contact effect on T. castaneum (LD 50  = 10.0 μg/adult). Meanwhile, the essential oil showed comparable repellent effect on T. castaneum at all testing concentrations. Bornyl acetate and camphene also exhibited strong fumigant and contact toxicity against both species of pests (LC 50  = 1.1, 10.1 mg/L air and LD 50  = 32.9, 701.3 μg/cm 2 for L. bostrychophila ; > 126.3, 4.1 mg/L air, and 66.0, 21.6 μg/adult for T. castaneum ). Bornyl acetate and camphene showed moderate repellent effect on T. castaneum and conversely showed attractant effect on L. bostrychophila . This work highlights the insecticidal potential of V. officinalis , which has been noted as a traditional medicinal plant.