Insecticidal activity of the essential oil and polar extracts from Ocimum gratissimum grown in Ivory Coast: Efficacy on insect pests and vectors and impact on non-target species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F19%3A00005397" target="_blank" >RIV/00027006:_____/19:00005397 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/19:80948

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0926669019301487" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0926669019301487</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.indcrop.2019.02.047" target="_blank" >10.1016/j.indcrop.2019.02.047</a>

Result language

angličtina

Original language name

Insecticidal activity of the essential oil and polar extracts from Ocimum gratissimum grown in Ivory Coast: Efficacy on insect pests and vectors and impact on non-target species

Original language description

Ocimum gratissimum L. (white wild basil) is an aromatic herb cultivated in Western Africa for culinary and pest control purposes. The current research evaluated the insecticidal activity of white wild basil essential oil, ethanolic and water extracts against insect pests and vectors, i.e., the tobacco cutworm Spodoptera littoralis, the housefly Musca domestica, and the filariasis vector Culex quinquefasciatus. Furthermore, the toxicity of the essential oil and polar extracts against the non-target earthworm Eisenia fetida was assessed. The chemical profiles of the essential oil and polar extracts were obtained by GC-MS and HPLC-DAD analyses. Acute toxicity experiments were conducted on larvae of C. quinquefasciatus and S. littoralis and adults of M. domestica and E. fetida, to determine the LC50 and LC90 values of the oil and polar extracts. Chronic toxicity was evaluated on S. littoralis feeding on tomato discs treated with essential oil and polar extracts. The essential oil was dominated by thymol (50.0%) and p-cymene (16.8%), whereas ethanolic and aqueous extracts were characterized by carvacrol (13%) and thymol (11%), and shikimic acid (3%) and rosmarinic acid (2%), respectively. The essential oil was significantly more active on target insects than extracts, showing LC50 /LD50 of 39.6 mg L-1 on C. quinquefasciatus, 72.2 mu g adult(-1 )on M. domestica and 30.2 mu g larva(-1) on S. littoralis. Furthermore, the essential oil and ethanolic extract at sublethal doses (10 and 70 mu g cm(-2), respectively) affected the survival of S. littoralis larvae from the third day on. White wild basil oil LD50,(90) at day 5 were 2.8 and 12.3 mu g cm(-2). Finally, the essential oil and polar extracts were not toxic to E. fetida over the positive control a-cypermethrin. Overall, our study showed that the essential oil of white wild basil is a potential candidate as a functional ingredient in insecticidal formulations to manage agricultural moth pests and insect vectors of public importance.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Industrial Crops and Products

ISSN

0926-6690

e-ISSN

1872-633X

Volume of the periodical

132

Issue of the periodical within the volume

JUN 2019

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

377-385

UT code for WoS article

000464485400040

EID of the result in the Scopus database

2-s2.0-85062181940