... (CFU/g)<50PathogenNegativeMolecular Weight(Dal)<30001) Molding moisture: Fish collagen can intensely absorb water in the air and ... , as having lots of hydrophilic groups.(2) Whitening: Fish collagen may prevent tyrosine translating into melanin, elimilate free ... hydroxyproline with aging. Because of containing plenty of hydroxyprolines, fish collage can provide raw materials for collagen's synthesis, ...