Production and properties of electrosprayed sericin nanopowder

Science and Technology of Advanced Materials. 2012;13(3):035010


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Journal Title: Science and Technology of Advanced Materials

ISSN: 1468-6996 (Print); 1878-5514 (Online)

Publisher: Taylor & Francis Group

Society/Institution: National Institute for Materials Science

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials | Technology: Chemical technology: Biotechnology

Country of publisher: United Kingdom

Language of fulltext: English

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Najmeh Hazeri, Hossein Tavanai and Ali Reza Moradi


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Time From Submission to Publication: 15 weeks


Abstract | Full Text

Sericin is a proteinous substrate that envelops fibroin (silk) fiber, and its recovery provides significant economical and social benefits. Sericin is an antibacterial agent that resists oxidation and absorbs moisture and UV light. In powder form, sericin has a wide range of applications in food, cosmetics and drug delivery. Asides from other techniques of producing powder, such as precipitation and spray drying, electrospraying can yield solid nanoparticles, particularly in the submicron range. Here, we report the production of sericin nanopowder by electrospraying. Sericin sponge was recovered from Bombyx mori cocoons through a high-temperature, high-pressure process, followed by centrifugation and freeze drying of the sericin solution. The electrospraying solution was prepared by dissolving the sericin sponge in dimethyl sulfoxide. We demonstrate that electrospraying is capable of producing sericin nanopowder with an average particle size of 25 nm, which is by far smaller than the particles produced by other techniques. The electrosprayed sericin nanopowder consists of small crystallites and exhibits a high moisture absorbance.