Biodegradable pestiddes

The advent of contemporary biotechnology has enabled development of new strategies to achieve the same objectives protecting crops using biolr cally-produced, biodegradable pestiddes. A typical example is die production and use of proteinaceous insect toxins encoded by Baculo virus. Th fyp pestiddes are readitylnpgradable and are target spedfic. 

The biodegradability of starch in the plastic matrix mainly depends on the accessibility of starch to microbes and on the coimectivity of starch particles each other. Wool and Cole (8) described a simulation model based on percolation theory for predicting accessibility of starch in LDPE to microbial attack and add hydrolysis. This model predicted a percolation threshold at 30% (v/v) starch irrespective of component geometry and other influential factors. Two critical aspects, the bioavailability and the kinetics of the starch hydrolysis in the plastic matrix must be examined before such blends could be applied as controlled release formulation of pestiddes. The goal of this work was to develop a kinetic model describing the degradation and release of starch blended with hydrophobic plastics. 

Saxena KK, Seth N (2002) Toxic effects of cypermethrin on certain hematological aspeds of fresh water fish, Channa punctatus. Bull Environ Contam Toxicol 69 364-369 Schofield DA, Dinovo AA (2010) Generation of a mutagenized oiganophosphorus hydrolase for the biodegradation of the oiganophosphate pestiddes malathion and demeton-s. J Appl Microbiol 109 548-557... 

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