This study summarizes optimization of techniques for common carp artificial propagation including improvements of activation solution (AS), the process of insemination, and elimination of egg stickiness. The optimum gamete ratio for good fertilization and hatching rate ranged from 8490 to 23 672 spermatozoa per egg, when dechlorinated tap water was used. Optimal ratio between eggs (weight in g)...

Sea products are valuable resources of natural substances such as lipids, polysaccharides, enzymes, vitamins, and proteins. In this issue, a variety of fish proteases (trypsin, alcalase, etc.) have been characterized and sometimes purified. Many of these enzymes display potentially interesting new biochemical properties for industrial applications. Their potential adequacy for biotechnological ...

The fishing industry is often targeted as a producer of organic streams with low economic value. Biotechnological approaches can play crucial role in transforming and adding value to these for their further use upcycle. In this study, Atlantic codfish ( Gadus morhua ) frames, were subjected Alcalase hydrolysis, whose optimal conditions first fine-tuned established follows: 56.8 °C, pH 8.35, [Al...

The effect of enzymatic hydrolysis apricot kernel protein with different proteases (Alcalase, pancreatin, pepsin, and trypsin) on the amino acid content, degree (DH), antioxidant, antibacterial characteristics resulting hydrolyzates was investigated in this study. composition acids (hydrophobic: ~35%; antioxidant: ~13%), EAA/TAA ratio (~34%), PER index (~1.85) indicates ability hydrolyzate as a...

This work investigates the production of hyaluronic acid (H) by Streptococcus equi subsp. zooepidemicus in complex media formulated with peptones obtained from Scyliorhinus canicula viscera by-products. Initially, in batch cultures, the greatest productions were achieved using commercial media (3.03 g/L) followed by peptones from alcalase hydrolyzed viscera (2.32 g/L) and peptones from non-hydr...