Study of Nanochitosan (Definition, Manufacture, Analysis of Characteristics and Utilization): Review
Radika Gilang Bayu Sektiaji *
Fisheries Department, Faculty of Fisheries and Marine Science, Padjadjaran University, Indonesia.
Emma Rochima
Fisheries Department, Faculty of Fisheries and Marine Science, Padjadjaran University, Indonesia.
Rusky Intan Pratama
Fisheries Department, Faculty of Fisheries and Marine Science, Padjadjaran University, Indonesia.
Gemilang Lara Utama
Faculty of Agro-Industrial Technology, Padjadjaran University, Jl. Raya Bandung-Sumedang, Hegarmanah Jatinangor, Sumedang 45363, West Java, Indonesia.
*Author to whom correspondence should be addressed.
Abstract
Nanochitosan is a nanoparticle of chitosan with a size between 100-400 nm. Nanochitosan has a higher antibacterial ability than ordinary chitosan. The manufacture of chitosan into nanochitosan can be done by ionic gelation method, namely the complexation of polyelectrolyte between positively charged of chitosan and negatively charged of sodium tripolyphosphate. The morphology of nanochitosan is in the form of a whole sphere and has typical chitosan functional groups such as amine, hydroxyl and carboxyl groups. Utilization of Nanochitosan can be used as a natural preservative because it has antibacterial properties in the form of edible coating. Fish filets coated with nanochitosan edible coating can extend the shelf life and maintain freshness which can be seen from the physiochemical characteristics.
Keywords: Antibacterial, edible coating, manufacture, nanochitosan, natural preservative, utilization