This study aimed to prepare V-type starch nanoparticles composed of debranched starch and fatty acid using a novel, simple, and fast oil-water interface method. The average size of the starch nanoparticles was 144–377 nm and included two different sizes of particles: large particles of approximately 110–1000 nm and small particles of approximately 30–105 nm. The average size was smaller for starch nanoparticles prepared at 25 °C was smaller than at 60°C. The XRD pattern indicated that the starch nanoparticles were V-type structures, including Vâ… -type and Vâ…¡-type. The long-range and short-range order of starch nanoparticles were affected by the preparation conditions. Stirring treatment disrupts the orderly arrangement of the helical structures, resulting in a low relative crystallinity of the starch nanoparticles.

In materials science, “green” synthesis of metal/metal oxides nanoparticles has gained much attention as a sustainable, reliable, and eco-friendly protocol. Copper nanoparticles have gain significant attention due to its application in diverse fields. A number of microorganisms including plants, algae, bacteria, and fungi have been found to be capable of synthesizing copper nanoparticles. Plants extract comprises active compounds derived from various parts such as leaves, fruits, shoots, flowers, roots, seeds, and bark, which act as reducing and stabilizing agents in the bio-reduction of metal ions to novel metal nanoparticles. All scientific reports reveal the unique properties of copper nanoparticles such as antifungal, antibacterial, anticancer drugs, and catalytic natural action towards degradation of hazardous dyes. Herein, the green synthesis of copper nanoparticles using plant entities and their potential applications have been evaluated and discussed.

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Jenny
Journal Co-ordinator
Journal of Nano Research & Applications