Tailored Lignocellulose based Biodegradable Matrices with Effective Cargo Delivery for Crop Protection
2020
Controlled
release and targeted delivery of agrochemicals are crucial
for achieving effective crop protection with minimal damage to the
environment. This work presents an innovative and cost-effective approach
to fabricate lignocellulose-based biodegradable porous matrices capable
of slow and sustained release of the loaded molecules for effective
crop protection. The matrix exhibits tunable physicochemical properties
which, when coupled with our unique “wrap-and-plant”
concept, help to utilize it as a defense against soil-borne pests
while providing controlled release of crop protection moieties. The
tailored matrix is produced by mechanical treatment of the lignocellulosic
fibers obtained from banana plants. The effect of different extents
of mechanical treatments of the lignocellulosic fibers on the protective
properties of the developed matrices is systematically investigated.
While variation in mechanical treatment affects the morphology, strength,
and porosity of the matrices, the specific composition and structure
of the fibers are also capable of influencing their release profile.
To corroborate this hypothesis, the effect of morphology and lignin
content changes on the release of rhodamine B and abamectin as model
cargos is investigated. These results, compared with those of the
matrices developed from non-banana fibrous sources, reveal a unique
release profile of the matrices developed from banana fibers, thereby
making them strong candidates for crop protection applications.
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