Isolation and characterisation of collagens from the skin of largefin longbarbel catfish (Mystus macropterus)

Characterization of Collagen from Different Discarded Fish Species of the West Coast of the Iberian Peninsula

“…One important aspect of the policy is to find alternatives for dealing with discards; this may include the valorization of the whole fish or components of them. Fish collagen has been extracted mainly from fish skin; several works have addressed the use of fish skins as sources of collagen and gelatin (Senaratne et al, 2006;Nagai and Suzuki, 2002;Zhang et al, 2009;Gómez-Guillén et al, 2002). To our knowledge, this is one of the first studies reporting the extraction of skin collagen from discarded or underutilized fishes.…”

Isolation and Characterization of Pepsin-Solubilized Collagen from the Skin of Black Carp (<i>Mylopharyngdon piceus</i>)

“…As is shown, the main absorption bands are amide A (3300 cm −1 ), amide B (2924 cm ), which are similar to those of collagen from the skin of Rachycentron canadum [4]. The amide A band can be ascribed to N-H [15], where a slight shift to lower wave numbers is observed comparing to non-collagens proteins (3400 -3440 cm −1 ). When the N-H group of a peptide is involved in a hydrogen bond, the position is shifted to lower frequencies, indicating that many of the N-H groups of this collagen were involved in hydrogen , which is commonly associated with an asymmetrical stretch of CH 2 [16].…”

“…Generally, the shift to the lower wave number indicted the presence of hydrogen bonds in collagen. Amide III bands were observed at 1238 cm −1 for PSC, the peak of which is primarily associated with the combination peak between N-H deformation and C-N stretching vibrations as well as the triple helical of collagen [15].…”

Identification of a suitable sterilisation method for collagen derived from a marine Demosponge

“…These, however, carry the potential risk of transmissible spongiform encephalopathies and pathogens such as foot-and-mouth disease (Zhang, Liu, and Li, 2009). There is now a consensus that a safer alternative would be to use collagen from aquatic and, specifically, marine sources (Song et al, 2006); (Giraud-Guille et al, 2000).…”

“…Placing a value on the denaturation temperature of collagen is highly dependent on the species. Vertebrates, for example, have at least 27 different types of collagen (Myllyharju and Kivirikko, 2004) with denaturation temperatures ranging from the approximately 30 °C up to 160 °C depending on species and location within the body (Zhang, Liu, and Li, 2009); (Wang et al, 1999). C. reniformis belongs to a far less well studied phylum (Porifera) leading to a dearth of information on its collagen.…”