Structural and Rheological Characteristics of Alginate from Sargassum cristaefolium Extracted by Twin Screw Extruder

Pharmacological and natural products diversity of the brown algae genusSargassum

“…This alginate had a molecular weight of 217.94 AE 7.14 kDa with a mannuronic acid to guluronic acid ratio (M/G) of 0.28, and the L-guluronic acid block was 0.78, which was higher than the D-mannuronic acid block. 20…”

A Brief Review on the Development of Alginate Extraction Process and Its Sustainability

“…The production of calcium alginate bead [77] and alginate based 3D printing ink [78] using extrusion process has been widely investigated. Recently, Sugiono et al, applied extrusion technology in the extraction of alginate from brown seaweed Sargassum cristaefolium [64,79]. In comparison to a conventional alginate extraction protocol, an extruder was introduced at the Na 2 CO 3 extraction stage to replace the beaker/reactor tank for hosting the reaction.…”

Multiscale investigation of viscoelastic properties of aqueous solutions of sodium alginate and evaluation of their biocompatibility

“…10,11 The understanding of these variable properties has attracted the attention of numerous researches in the last decades leading to a complete characterization of the molecular structure of a wide range of sodium alginates of different origins 5 and different extraction conditions. 12 The classical parameters that can contribute to easily identify the expected properties of a given alginate product are their molecular weight 13 and ratio M/G. 14 However, they are not enough to unambiguously define the molecular structure of a copolymer and the sequential structure of the alginate chains was completely determined by more time-consuming and costly techniques such as nuclear magnetic resonance (NMR) 15,16 to get a better understanding of the properties of the alginate.…”