title: Effect of chitosan on shelf life of restructured fish products from pangasius (pangasianodon hypophthalmus) surimi during chilled storage.
abstract: In the present study, restructured products were prepared from pangasius surimi and their qualities were analysed under chilled storage. Pangasius surimi had 75.82 % moisture, 16.91 % protein, 2.76 % fat and 0.95 % ash. Restructured products were prepared in three different formulations by incorporating corn starch (10 %) and chitosan (0.75 %). Formulation containing only corn starch (10 %) was served as control. In all the formulations, mono unsaturated fatty acids were higher (45.14 %). The total volatile base nitrogen (TVB-N) showed an increasing trend and it was found to be higher in control (4.8 mg/100 g) on 10(th) day than the chitosan incorporated sample (3.5-4.2 mg/100 g) on 17(th) day during chill storage. Similarly, peroxide value (PV) was found to higher (8.85 milliequivalent of O2/kg) in control than the chitosan incorporated sample (4.5-6.8 milliequivalent of O2/kg) on 10(th) day. All the three formulations had an acceptable level of thiobarbituric acid (TBA) value that ranged between 0.023-0.098 mg of malanoldehyde/kg during chilled storage. Based on the sensory and microbiological analysis, products prepared without chitosan had a shelf life of 10 day whereas, products incorporated with chitosan had an extended shelf life of 17 day.
authors.affiliation: ICAR- Mumbai Research Centre of Central Institute of Fisheries Technology (CIFT), CIDCO Admn. Bldg., Sector-1, Vashi, Navi Mumbai, Maharastra 400 703 India.
authors.lastname: Jeyakumari A
authors.affiliation: ICAR- Central Institute of Fisheries Technology, Willingdon Island, Cochin, India.
authors.lastname: George Ninan
authors.affiliation: ICAR- Central Institute of Fisheries Technology, Willingdon Island, Cochin, India.
authors.lastname: Joshy C G
authors.affiliation: ICAR- Mumbai Research Centre of Central Institute of Fisheries Technology (CIFT), CIDCO Admn. Bldg., Sector-1, Vashi, Navi Mumbai, Maharastra 400 703 India.
authors.lastname: Parvathy U
authors.affiliation: ICAR- Central Institute of Fisheries Technology, Willingdon Island, Cochin, India.
authors.lastname: Zynudheen A A
authors.affiliation: ICAR- Central Institute of Fisheries Technology, Willingdon Island, Cochin, India.
authors.lastname: Lalitha K V
keywords: Chitosan; Quality; Restructured products; Shelf life; Surimi