The Feasibility of Using Agarophyte Processing Waste
Abstract
When agarophytes are processed, 16-89% algal waste (AW) is formed. Due to the high content of minerals in this waste and the presence of proteins that are resistant to the action of proteolytic enzymes, such AW is mainly used in the production of feed for farm animals. The significant content of polysaccharides in dry AW indicates that it could be used as a raw material for the production of dietary fiber (DF). Due to the difference in the chemical composition of AW depending on the type of red algae, different approaches for its deproteinization have been used. Thus, a 3% alkali solution should be used for the deproteinization of algal waste from the red algae Gracilaria, a 0.5% alkali solution for GelidiumAW, and a 1% sodium carbonate solution for A. plicataAW.The duration of the deproteinization process is 30 min at a temperature of 97±2 ∘C for all types of AW. In this study, functional and technological solutions of DF from AW were developed. The results showed that their water binding capacity was 6-22 g of water per 1 g of the preparation, the fat binding capacity was 1.6-3.3 g of fat per 1 g of the preparation, and the swelling capacity was 46-312% depending on the type of red algae.The obtained DF was used in the production of minced fish food products of the ‘fish sticks’ type, based on minced fish and consisting of cod and pink salmon. The study of the chemical composition and calorie content of the developed food product showed the possibility of its use in dietary nutrition.
Keywords: red algae, algal waste, deproteinization, dietary fiber
References
[1] Boyko LI, Krasilnikova SV, Medvedeva EI, Panchenko KA, Petrenko EB.Biological assessment of protein substances of algae and the search for ways of their rational use. All-Union Meeting on Marine Algology - Macrophytobenthos. 1974: 124. 14-16.
[2] Boyko LI, Krasilnikova SV, Medvedeva EI, Panchenko KA, Petrenko EB. Development of a technology for obtaining a preparation containing amino acids and peptides from the processing of waste of agar-bearing algae. All-Union Meeting on Marine Algology - Macrophytobenthos.1974: 124. 16-17.
[3] Dudkin MS, Shchelkunov LF. New food products. ?oscow: Nauka, 1998.
[4] Duma LN,Shcherbina MA, Salkova IA. Use of phyllophora wastes in the production of agaroid in fish feeding.Biologically Active Substances of Hydrobionts - New Medical, Preventive and Technical Preparations. 1991; 1. 136-137.
[5] Zimina LS,Nasedkina EA, Shmelkova LP. Amino acid composition of some red algae. Research on Technology of Fish Products. 1972;3:40-45.
[6] Zimina LS, Kusheva OA, Vrishch EA.Ways of using agar production wastes in the national economy. Problems of technology for processing non-traditional raw materials from the objects of the Far East industry. Proceedings of All-Russian Research Institute of Fisheries and Oceanography1989: 1. 111-115.
[7] Zimina LS. Improving the quality of feed hydrolysate from algal waste of agar production. Research on the Technology of Hydrobionts of the Far Eastern Seas. 1986;9. 106-112.
[8] Krasilnikova SV,Medvedeva EI. Investigation of the particularity of proteins of red agar-bearing algae. All-Union Meeting on Marine Algology - Macrophytobenthos. 1974:3. 76-78.
[9] Makurina SV, Rumyantseva GN. Comparative characteristics of functional and technological characteristics of food fibers. Meat Industry.2006;6:28-29.
[10] Medvedeva EI. Development of the integrated process for the use of the Black Sea phyllophora. Biology of the Sea.1978;47:97-98.
[11] Podkorytova AV, Ignatova TA, Li BM, Van TTT. RF patent 2435443 Russian Federation, MPK8 A23 L 1/0532. A universally applicable approach of obtaining agar from red algae (agarophytes). applicant for a patent and patentee is Federal State Unitary Enterprise ‘Russian Federation Research Institute of Fishery and Oceanography’- No. 2010120014/13. 2010 May 20.
[12] Podkorytova AV, Ignatova TA, Rodina TV, Chimirov YI.RF patent 2445780 Russian Federation, MPK8 A23 L 1/0532. Method of obtaining dietary fiber from algal raw materials; applicant for a patent and patentee is Federal State Unitary Enterprise ‘Russian Federation Research Institute of Fishery and Oceanography’. - No. 2010146763/13. 2010 November 18.
[13] Podkorytova AV, Ignatova TA, Slapoguzova ZV. RF patent 2459456 Russian Federation, MPK8 A 23 L 1/325. Dietary product. applicant for a patent and patentee is Federal State Unitary Enterprise “Russian Federation Research Institute of Fishery and Oceanography”. No. 2011108970/13. 2012 August 27.
[14] Podkorytova AV, Kadnikova IA, Kusheva OA, Sokolova VM, Sukhoverkhov SV. RF patent No. 2189990 A method of obtaining highly purified agar and agarose from red algae Abnfeltiatobucbiensis.2002 September 27.
[15] Polshkov AN. Medico-biological and functional aspects of the use of food fibers. Bulletin Aromaros-M. 2006;3(17):65-70.
[16] Shenderov B.A. Functional nutrition and its rolein the prevention of metabolicsyndrome. Moscow: DeLiprint; 2008.