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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.16 [2009] >
IJCT Vol.16(5) [September 2009] >
| Title: | Development of calcium alginate –gelatin based microspheres for controlled release of endosulfan as a model pesticide |
| Authors: | Roy, Anamika
Bajpai, J
Bajpai, A K |
| Keywords: | Endosulfan
Sodium alginate
Controlled release
Biopolymeric beads
Kinetics |
| Issue Date: | Sep-2009 |
| Publisher: | CSIR |
| Abstract: | In the present
study controlled release formulations have been developed by encapsulating
endosulfan for reducing environmental impact of pesticides within the
macromolecular network of calcium alginate and gelatin based microspheres.
Various alginate and gelatin based compositions were prepared by crosslinking
sodium alginate with calcium ions in the presence of gelatin. The effects of
preparation conditions of beads such as varying concentrations of crosslinker,
endosulfan, alginate to gelatin ratio and temperature were investigated on the
release profiles of endosulfan. The obtained release data were analyzed in
accordance with Ficks power law and kinetic parameters of the release process
were calculated. The results obtained demonstrate that one can significantly
and desirably control the rate of pesticide release by suitably modifying and
adjusting the experimental protocol. The soil- pot experiments were also
performed to predict the kind of mechanisms the endosulfan may follow while
being released in the agricultural fields. |
| Page(s): | 388-395 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.16(5) [September 2009]
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