FT Vol.51(2)

Permanent URI for this collection

http://localhost:4000/handle/123456789/5046

Browse

Browsing FT Vol.51(2) by Author "Joshy, C.G."

Now showing 1 - 2 of 2
  • Item
    Comparison of collagen extracted from skin of double spotted queenfish and Malabar grouper
    (Society of Fisheries Technologists (India), Cochin, India, 2014) Hema, G.S.; Shyni, K.; Mathew, S.; Ninan, G.; Joshy, C.G.
    Acid soluble collagen (ASC) and pepsin digestible collagen (PDC) from the skin of double-spotted queenfish (Scomberoides lysan) and Malabar grouper (Epinephelus malabaricus), were isolated and characterized. On wet weight basis, the yields of ASC and PDC from queen fish and grouper were 7.82, 3.92, 12.5 and 6.49% respectively. Amino acid analysis revealed that they contained glycine as a major amino acid with high contents of alanine, proline and hydroxyproline. Based on sodium dodecyl sulfate polyacrylamide gel electrophoretic patterns and subunit compositions, all were identified to be type 1 collagens when compared with calf skin type 1 collagen. a1, a2 and b chains were the major components of the presently isolated collagens. While comparing these two species, queen fish skin had good yield of collagen which could be served as an alternative source of collagen for different applications.
  • Item
    Composition, textural quality and gel strength of surimi prepared from striped catfish (Pangasianodon hypophthalmus, Souvage, 1878)
    (Society of Fisheries Technologists (India), Cochin, India, 2014) Tanuja, S.; Viji, P.; Zynudheen, A.A.; Ninan, G.; Joshy, C.G.
    Surimi was prepared from the meat of striped catfish Pangasianodon hypophthalmus using single wash and double wash method and the composition, gel strength and textural properties were compared. Crude protein and fat content of double wash surimi was significantly low (p<0.05). Both single wash and double wash surimi gels exhibited high expressible drip and low water holding capacity with double wash surimi gel showing significantly higher values (p<0.05). The gel strength, and textural parameter like hardness, and stiffness were significantly (p<0.05) higher for single wash surimi. The additional washing resulted in a significant decrease (p<0.05) in total pigment content of the surimi.