Introduction
Chitosan [(C6H11NO4)n] is a deacetylated product of chitin [(C8H13NO5)n], with the molecular weight of around 800 kDa. It is a cationic polymer with (2 000 to 3 000) monomers, and known to have the following important properties: biodegradable, non-toxic and edible (Kerry, 2012). More importantly, chitosan acts as an antimicrobial agent due to its positively charged polycation (El Ghaouth et al. 1994). Its nano particle form (nano-chitosan) was proven to be more compact and more potent antibacterial agent, as reported by Ramezani et al. (2015), when comparing the effectiveness of chitosan and nano-chitosan coatings on silver carp fillets (Hypophthalmicthys molitrix) in refrigerated storage at 4 °C.
Introduction Chitosan [(C6H11NO4)n] is a deacetylated product of chitin [(C8H13NO5)n], with the molecular weight of around 800 kDa. It is a cationic polymer with (2 000 to 3 000) monomers, and known to have the following important properties: biodegradable, non-toxic and edible (Kerry, 2012). More importantly, chitosan acts as an antimicrobial agent due to its positively charged polycation (El Ghaouth et al. 1994). Its nano particle form (nano-chitosan) was proven to be more compact and more potent antibacterial agent, as reported by Ramezani et al. (2015), when comparing the effectiveness of chitosan and nano-chitosan coatings on silver carp fillets (Hypophthalmicthys molitrix) in refrigerated storage at 4 °C.
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