Na-alginate

Na-alginate is natural polysaccharide extracted from seaweeds, with a large availability in nature. Chemically, alginate composed of block polymers namely polyguluronate [poly-G], poly-mannuromate [poly-M] and their copolymer in random sequence [8, 72]. 

Alginate is an excellent gel forming materials capable of holding a huge amount of water, in presence of polyvalent cations, e.g., Ca,  

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Effect of Na-alginate and bead diameter on lactic acid production from pineapple waste using immobilized Lactobacillus delbrueckii ATCC 9646... 

Lactic acid bacteria were immobilized in Ca-alginate beads prepared from different concentration of Na-alginate (1.0%, 2.0%, 4.0%, 6.0% and 8.0% w/v) and their fermentation efficiencies were investigated in liquid pineapple waste containing 31.3 gL of glucose... 

Fig.S.Effect of Na-alginate on lactic acid yield Fig.6.Effeot of bead diameter on lactic acid yield...

Guido, S., Simeone, M., Alfani, A. (2002). Interfacial tension of aqueous mixtures ofNa-caseinate and Na-alginate by drop deformation in shear flow. Carbohydrate Polymers, 48, 143-152. 

CA 53,7598(1959) [Flexible detong fuses, constg of a core(2.85g) of PETN or RDX 0.15g of Na carboxymethylcellulose or Na alginate per ft of fuse, are enclosed in a paper tube and wound with jute cotton yarn. A coating of wax or bitumen at 100° a waterproof coating of polyethylene are then/applied 249)H.P. Jenkins s/c.H.Shomate,USP 2865726(1958) ... 

Add 8 gramm Na-alginate powder to a mixtnre of 204 ml demineralized water and 30 ml NaCI-solution (8 g/1] while stirring vigorously. Remove any lumps by heating the solntion to 60 C. 

Schoeters GE, Luz A, Vanderborght OL. 1983. 226Ra induced bone-cancers The effects of a delayed Na-alginate treatment. Int J Radiat Biol 43 231-247. 

Yomota C, Miyazaki T, Okada S. Sustained-release effect of the direct compressed tablet based on chitosan and Na alginate. Yakugaku Zasshi 1994 114 257-263. 

Two hydrogels of calcium alginate and chitosan-calcium alginate composite were prepared from Na alginate and its composite with chitosan by soaking in O.IM aq. CaCla. A biomimic fixation of aqueous COa - ions as CaCOa was performed. Each of the hydrogels was put into a dialysis membrane tube, and was soaked in 0.1 M aq. NaaCOa (pH 11) at room temperature for 1 day to afford a white precipitate of CaCOa or chitosan-CaCOa and a water-soluble sodium alginate. The dry chitosan-CaCOs composite (60% chitosan and 23% COa -) was stable in aqueous alkaline solutions and unstable in aqueous acidic solutions. 

The hydrogel obtained above was put into a diaiysis membrane tube, and was soaked in 500 ml of aq. 0.1 M NazCOs solution (pH ii) with gentle stirring at room temperature for 1 day. Calcium carbonate appeared as a white precipitate (0.10 g), and Na alginate was solubilized. The precipitate was collected by filtration and dried to afford CaCOa in 0.10 g yield,... 

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