Extraction and characterization of sodium alginate from three brown algae collected from Sanur Coastal Waters, Bali as biopolymer agent

Abstract

Abstract. Permatasari AAAP, Rosiana IW, Wiradana PA, Lestari MD, Widiastuti NK, Kurniawan SB, Widhiantara IG. 2022. Extraction and characterization of sodium alginate from three brown algae collected from Sanur Coastal Waters, Bali as biopolymer agent. Biodiversitas 23: 1655-1663. Sodium alginate extracted algae are gaining attention as alternative biopolymer materials. This research aimed to extract and characterize the natrium alginate from three brown algae obtained from Sanur Beach, Denpasar, Bali, Indonesia. Alginate extraction was carried out using acid hydrolysis by Na2CO3 with further purification using isopropyl alcohol. Physicochemical characterization was carried out using FT-IR. The results showed that Sargassum aquifolium and Turbinaria ornata had higher yields (%) than Padina australis (P<0.05). There was no significant difference (P>0.05) in water content, protein content, fat content and pH of the three brown algae. Overall, these three types of brown algae have values ??that are close to the sodium alginate standard set by the Food Chemical Codex (FCC), except for the results of Padina australis in the yield parameter. The functional group Na which is characteristic of sodium alginate is present in all alginate isomers, but there are some functional groups that are still not available in the extraction process in this study based on FT-IR analysis. These findings indicate that sodium alginate extracts from various types of brown algae have specific characteristics as defined by the Food Chemical Codex (FCC) and show great potential to be used as biopolymer materials, especially in the biomedical field.

Extraction, Structural Characterization, and In Vivo Anti-Inflammatory Effect of Alginate from Cystoseira crinita (Desf.) Borry Harvested in the Bulgarian Black Sea

“…Moreover, the obtained yield was higher compared with other Cystoseira species, such as the Tunisian C. barbata (9.9%) [17] and C. sedoides alginate (11%) [18]. The alginate content of C. crinita algae determined in this study was similar to that found for other brown algae from different botanical genera such as Dictyota (D. dichotoma and D. ciliolata 20-21%), Sargassum (S. fluitans 21.1-22.8% and S. oligocystum 18.9-20.5%), Padina (P. boergesenii 24.3% and P. gymnospora 21.5%), Turbinaria (T. triquetra 22% and T. ornata 20.2%), [27][28][29][30]. Nevertheless, Bulgarian Black Sea alginate had a lower extraction yield compared with the species used for the industrial production of alginate, such as Durvillaea willana and D. antarctica (44-53%), Macrocystis pyrifera (43%), Laminaria digitata (40%), and Ecklonia cava (35-38%) [31][32][33].…”

Effect of Extraction Method from Brown Seaweeds Padina sp. on Quality of Alginate for Edible Film Application: A Review

“…The addition of 1% HCl is also a factor in decreasing the value of the ash content [41]. The ash content of research conducted by Permatasari, et al [40] is 17.34%. Meanwhile, in the research of Mushollaeni [46] and Septiani et al [45], the resulting ash content of sodium alginate is 28.59% and 31.24%.…”

Isolation and Molecular Identification of Endophytic Fungi Associated with Brown Algae for Inhibiting Escherichia coli ESBL

“…e marine environment is currently considered as one of the most important sources in the eld of natural products research, as marine organisms have demonstrated extraordinary biological, biochemical, and biosynthetic potential (Newman and Cragg, 2014). Research into marine natural products is o en considered important for the identi cation of new chemical structures, especially those with unconventional mechanisms of action (Permatasari et al, 2022;. e relationship between macroalgae and their endophytic fungus has been reported in the ecological eld.…”