1. Alemán, A., Giménez, B., Montero, P. and Gómez-Guillén, M.C., 2011. Antioxidant activity of several marine skin gelatins; LWT - Food Science and Technology, 44, 407-413. [DOI:10.1016/j.lwt.2010.09.003]

2. AOAC, 2000. Association of Official Analytical Chemists. 17th Ed., Official Method of Analysis, Washington D.C., USA.

3. Chalamaiah, M., Jyothirmayi, T., Diwan, P.V. and Dinesh Kumar, B., 2015. Antioxidant activity and functional properties of enzymatic protein hydrolysates from common carp (Cyprinus carpio) roe (egg). Journal of Food Science and Technology, 52, 5817-5825. [DOI:10.1007/s13197-015-1714-6] [PMID] []

4. Chi, C.F., Cao, Z.H., Wang, B., Hu, F.Y., Li, Z.R. and Zhang, B., 2014. Antioxidant and functional properties of collagen hydrolysates from Spanish mackerel skin as influenced by average molecular weight. Molecules, 19, 11211-11230. [DOI:10.3390/molecules190811211] [PMID] []

5. Chi, C.F., Hu, F.Y., Wang, B., Li, Z. R. and Luo, H.Y., 2015. Influence of amino acid compositions and peptide profiles on antioxidant capacities of two protein hydrolysates from skipjack tuna (Katsuwonus pelamis) dark muscle. Maine Drugs, 13, 2580-2601. [DOI:10.3390/md13052580] [PMID] []

6. Dong, S., Zeng, M, Wang, D., Liu, Z., Zhao, Y. and Yang, H., 2008. Antioxidant and biochemical properties of protein hydrolysates prepared from silver carp (Hypophthalmichthys molitrix). Food Chemistry, 107, 1485-1493. [DOI:10.1016/j.foodchem.2007.10.011]

7. Doucet, D., Otter, D.E., Gauthier, S.F. and Allen Foegeding, E., 2003. Enzyme-induced gelation of extensively hydrolyzed whey proteins by Alcalase: Peptide identification and determination of enzyme specificity. Journal of Agricultural and Food Chemistry, 51, 6300-6308. [DOI:10.1021/jf026242v] [PMID]

8. Gómez-Guillén M.C., López-Caballero M.E., Alemán A., López de Lacey, A., Giménez, B. and Montero, P., 2010. Antioxidant and antimicrobial peptide fractions from squid and tuna skin gelatin; In: Sea By-Products as Real Material: New Ways of Application, Section, 7, 89-115, Estelle Le Bihan (Edit.). Transworld Research Network, Kerala, India.

9. Gómez-Guillén, M.C.; Giménez, B., López -Caballero, M.E. and Montero, M.P., 2011. Functional and bioactive properties of collagen and gelatin from alternative resources: A review. Food Hydrocolloid, 25, 1813-1827. [DOI:10.1016/j.foodhyd.2011.02.007]

10. Gong, M., Mohan, A., Gibson, A. and Udenigwe, C.C., 2015. Mechanisms of plastein formation, and prospective food and nutraceutical applications of the peptide aggregates. Biotechnology Reports, 5, 63-69. [DOI:10.1016/j.btre.2014.12.003] [PMID] []

11. IFO (Iran Fisheries Organization), 2019. Statistic of cultured warm water fish in Iran. http://fisheries.ir/report_viwe.aspx?rep=parvaresh%20mahi%20garm. Accessed 12 December 2019.

12. Jalili, S.H., Farhoosh, R., Koocheki, A. and Motallebi, A.A., 2019. Microencapsulated Kilka fish oil stability using functional properties of Silver carp (Hypophthalmichthys molitrix) skin hydrolysate. Iranian Scientific Fisheries Journal, 27(6), 67-78.

13. Ovissipour, M.R., Abedian Kenari, A.M., Motamedzadegan, A. and Nazari, R.M., 2010. Optimization of enzymatic hydrolysis of visceral waste proteins of Yellowfin Tuna (Thunnus albacares). Food and bioprocess technology, 5, 696-705. [DOI:10.1007/s11947-010-0357-x]

14. Sun, L., Chang, W., Ma, Q. and Zhuang, Y., 2016. Purification of antioxidant peptides by high resolution mass spectrometry from simulated gastrointestinal digestion hydrolysates of Alaska pollock (Theragra chalcogramma) skin collagen. Marine Drugs, 14(10), 186, 14P. [DOI:10.3390/md14100186] [PMID] []

15. Valencia, P., Pinto, M. and Almonacid, S., 2014. Identification of the key mechanisms involved in the hydrolysis of fish protein by Alcalase. Process Biochemistry, 49, 258-264. [DOI:10.1016/j.procbio.2013.11.012]

16. Yi, J., Gobba, C.D., Skibsted, L.H. and Otte, J., 2017. Angiotensin-I converting enzyme inhibitory and antioxidant activity of bioactive peptides produced by enzymatic hydrolysis of skin from grass carp (Ctenopharyngodon idella). International Journal of Food Properties, 20, 1129-1144. [DOI:10.1080/10942912.2016.1203932]

17. Zhang, Y.; Duan, X. and Zhuang, Y., 2012. Purification and characterization of novel antioxidant peptides from enzymatic hydrolysates of tilapia (Oreochromis niloticus) skin gelatin. Peptides, 38, 13-21. [DOI:10.1016/j.peptides.2012.08.014] [PMID]

18. Zhang, L., Zheng, Y., Cheng, X., Meng, M., Luoa, Y. and Li, B., 2017. The anti-photoaging effect of antioxidant collagen peptides from silver carp (Hypophthalmichthys molitrix) skin is preferable to tea polyphenols and casein peptides. Food and Function, 8, 1698-1707. [DOI:10.1039/C6FO01499B] [PMID]

19. Zhong, S., Ma, C., Lin, Y.C. and Luo, Y., 2011. Antioxidant properties of peptide fractions from silver carp (Hypophthalmichthys molitrix) processing by-product protein hydrolysates evaluated by electron spin Resonance spectrometry. Food Chemistry, 126, 1636-1642. [DOI:10.1016/j.foodchem.2010.12.046] [PMID]