Efficiency of organic pesticides, turmeric (Curcuma longa) and neem (Azadirachta indica) against dry fish beetle (Dermestes sp.) during storage condition

Akm Nowsad Alam,Krishna Chandra Roy,Md Faridullah,Ulfat Jahan Lithi,Vikash Chandra Roy

doi:10.3329/jbau.v17i1.40672

Akm Nowsad Alam, Krishna Chandra Roy + Show 3 more

Open Access

https://doi.org/10.3329/jbau.v17i1.40672

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Abstract

Efficacy of turmeric (Curcuma longa) and neem (Azadirachta indica) or repelling dry fish insects (Dermestes sp. adult and larva) was investigated on the basis of their repellency rate, storage quality, sensory attributes of turmeric and neem treated dry fish and their cooked products. Pesticides prepared from turmeric and neem, were used in the form of extract and powder. The extracts were tested at the concentrations of 2%, 3%, 5% for turmeric and 3%, 5%, 7% for neem. Turmeric and neem powder were used for treatment at the rate of 2.0%, 3%, 4.0% upon 100 g dry fish. Repellency rate of Dermestes sp., adults was highest, where larvae showed mere resistance against herbal pesticides. Pesticides prepared from turmeric were more repellent than neem pesticides. Control and treated dry fish had almost similar sensory attributes after the 2nd month. However, odor, texture, general appearance and insect occurrence of control dry fish decreased significantly after 4th month of storage but all those parameter of treated dry fish were nearly unchanged. However, sensory quality of dry fish treated with turmeric and neem were remain unchanged after the 4thmonth. The results suggested that 3% extract and powder of turmeric or neem at the rate of 5% extract and 3% powder can be used as suitable field doses for direct application in dry fish to prevent insect infestation during storage of dry fish products. J. Bangladesh Agril. Univ. 17(1): 110–116, March 2019

Highlights

Dry fish is one of the popular and preferred food items in Bangladesh
Repellent effect of turmeric and neem extracts and powder on (Dermestes sp.) adult and larvae Repellency test was done on the adult and larvae of Dermestes sp. using turmeric and neem pesticides
Turmeric and neem extract were applied at the rate of 2%, 3% and 5% and; 3%, 5% and 7%, respectively against Dermestes sp. adult to determine the repellency rate (Table 1)

Summary

Introduction

Dry fish is one of the popular and preferred food items in Bangladesh. It is the staple source of protein in many areas of our country like Chittagong, Dhaka, Chandpur, Kuakata, Barisal etc. Because of the detrimental effect on human health greater portion of the pesticides are banned in Bangladesh for any type of use (Barua, 2007). Application of such hazardous pesticides relatively at higher dose in dry fish, often responsible for major health crisis to the human body (Khan et al, 2002)

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