| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2075668 | Biocatalysis and Agricultural Biotechnology | 2013 | 6 Pages |
Effects of chitosan nanoparticles on biophysical characteristics and growth of Robusta coffee (Coffea canephora Piere var Robusta) in green house condition have been investigated. Chitosan nanoparticles with high molecular weight (600 kDa) were prepared by nano spray drier. Effect of size and concentration of chitosan nanoparticles on biophysical characteristics such as photosynthetic net rate, transpiration of the leaves, contents of chlorophyll, carotenoid, nutrient uptake and growth parameters of the coffee were investigated. The results showed that chitosan nanoparticles with concentration of 10 ppm effected strongly on biophysical and growth of coffee in the green house. Chitosan nanoparticles enhanced 30–50% content of chlorophyll in the coffee leaves, from 30 to 60% photosynthesis intensity in comparison to the control. Chitosan nanoparticles also increased in uptake of nutrients, such as 9.8–27.4% N, 17.3–30.4% P, 30–45% K. Chitosan nanoparticles also had significant impact on the growth of the coffee seedlings, growth parameters of treated coffee were higher than control. The results also showed that size effect of chitosan nanoparticles in the range from 420 to 970 nm on biophysical characteristics and growth parameters of the coffee seedlings was not different significantly.
