Journal of Food, Agriculture and Environment

Bioactivity of the neem seed kernel supercritical extracts towards Tribolium castaneum (Herbst) 

Author(s):

Lixia Chen ¹, Bingjun Han ^{2, 3}, Lixu Peng ² *

Recieved Date: 2012-06-30, Accepted Date: 2012-10-02

Abstract:

Supercritical CO₂ extraction (SFE-CO₂) was used to get the neem SFE extracts from neem seed kernels, and the repellent, fumigant activity and contact toxicity of the neem SFE extracts were evaluated against Tribolium castaneum (Herbst) adults. The neem SFE extracts demonstrated good repellent and fumigant activity but weak contact toxicity against T. castaneum, and the activity varied with concentrations of the extracts and exposure time. At the concentration of 1.0 mg/ml, the extracts showed the repellency of 100% after 12 h of the exposure. The fumigant mortality was 33.24% only at the concentration of 1.0 mg/ml, at the concentration increased to 50 mg/ml, mortality of adults reached 70.05%. For the contact toxicity, the percentage mortality was 33% at the highest treated concentration 50 mg/ml. The synergism of azadirachtin, oil and other active components in neem SFE extracts could increase the bioactivity against T. castaneum. Then the neem SFE extracts could be used a good repellent and safer fumigant to control T. castaneum. 

Keywords:

Neem seed kernel, supercritical CO₂ extraction, Tribolium castaneum (Herbst), repellent, fumigant, contact toxicity

---

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Environment
Pages: 1511-1514

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :