Development of Basic Technology for Obtaining Sodium Alginate from Brown Algae
The possibility of making sodium alginate from a by-product (fucus semi-finished product), obtained by producing an extract from brown algae of the Fucus family – fucus bubbly (F.vesiculosus), has been studied. It has been found that up to 80% of the alginic acids contained in the feedstock remain in the fucus semi-finished product, which can also be isolated and used. The principal technology of sodium alginate from the fucus semi-finished product is developed, consisting of the following main stages: preparation of raw materials, reduction, pretreatment, extraction of alginates, isolation of alginic acid, production of sodium alginate, drying. As a result of optimization of the technological scheme, it was possible to increase the yield and improve the quality of the product: the yield of sodium alginate was 4.5% (which is 20% higher than the original), the content of alginic acids increased by 7% and was 92% in terms of dry matter, kinematic the viscosity increased almost twofold - its value reached a value of 500 cSt. Investigations carried out by the Fourier method of IR spectroscopy on the Shimadzu IR Tracer-100 ( Japan) showed that the sodium alginate obtained from the fucus semi-finished by optimized technology is not inferior in quality to sodium alginate produced from laminaria (Sigma Aldrich (USA).) Sodium alginate, made from the fucus semi-finished product, can be used as one of the components of gelling fillings for the production of canned fish in jellies. A technological scheme for processing algae is proposed.
 Hecht, H., Srebnik, S. (2016). Structural characterization of sodium alginate and calcium alginate. Biomacromolecules, vol. 17, no. 6, pp. 2160–2167.
 Sellimi, S., Younes, I., Ayed, H.B., et al. (2015). Structural, physicochemical and antioxidant properties of sodium alginate isolated from a Tunisian brown seaweed. Int J Biol Macromol, vol. 72, pp.1358–1367.
 Sokolan, N., Voron’ko, N., Derkach, S., et al. (2017). The self-assembly phenomenon in sodium alginate-gelatin aqueous mixture, Conference Handbook of 16th European Student Colloid Conference ECS 2017, Florence, Italy: ECS.
 Javed, K., Umer, A. Ramzan, N., et al. (2015). Possible production of sodium alginate from naturally grown algae in Pakistan. Science International, vol. 27, no. 1, pp. 1235–1342.
 Peteiro, C. (2018). Alginate production from marine macroalgae, with emphasis on kelp farming. Alginates and Their Biomedical Applications, pp. 27–66.
 Voron’ko, N.G., Derkach, S.R., Kuchina, Y.A., et al. (2019). Influence of added gelatin on the rheological properties of a Fucus vesiculosus extract. Food Bioscience vol. 29, pp. 1–8.
 Zayed, A., et al. (2019). Phenomenological investigation of the cytotoxic activity of fucoidan isolated from Fucus vesiculosus. Process Biochemistry vol. 81, pp. 182–187.
 Torode, T.A., et al. (2016). Dynamics of cell wall assembly during early embryogenesis in the brown alga Fucus. Journal of experimental botany vol. 67.21, pp. 6089–6100.
 Jueterbock, A., et al. (2016). The fate of the Arctic seaweed Fucus distichus under climate change: an ecological niche modeling approach. Ecology and Evolution 6.6, pp. 1712–1724.
 Rickert, Esther, et al. (2016). Seasonally fluctuating chemical microfouling control in Fucus vesiculosus and Fucus serratus from the Baltic Sea. Marine biology 163.10, pp. 203.
 Oliveira, C., et al. (2019). Fucoidan from Fucus vesiculosus inhibits new blood vessel formation and breast tumor growth in vivo. Carbohydrate polymers 223, pp. 115034.
 Kautsky, L, Qvarfordt, S., Schagerström, E. (2019). Fucus vesiculosus adapted to a life in the Baltic Sea: impacts on recruitment, growth, reestablishment and restoration. Botanica Marina, vol. 62.1, pp. 17–30.
 Kadam, Shekhar U., Brijesh K. Tiwari, Colm P. O’Donnell. (2015). Extraction, structure and biofunctional activities of laminarin from brown algae. International Journal of Food Science & Technology, vol. 50.1, pp. 24–31.
 Kadam, Shekhar, et al. (2015). Laminarin from Irish brown seaweeds Ascophyllum nodosum and Laminaria hyperborea: ultrasound assisted extraction, characterization and bioactivity. Marine drugs, vol 13.7, pp. 4270–4280.
 Song, M., et al. (2015) Marine brown algae: a conundrum answer for sustainable biofuels production. Renewable and Sustainable Energy Reviews, vol. 50, 782–792.
 Wehr, John D. (2015). ”Brown algae. Freshwater Algae of North America. Academic Press, pp. 851–871.
 Wang, Hui-Min David, et al. (2015). Exploring the potential of using algae in cosmetics. Bioresource Technology, vol. 184, pp. 355–362.
 Wells, M.L., et al. (2017). Algae as nutritional and functional food sources: revisiting our understanding. Journal of applied phycology, vol. 29.2, pp. 949–982.