Erythorbic acid sodium salt

Synonyms E316 D-eryt/)ro-hex-2-enoic acid sodium salt erythorbic acid sodium salt. 

Synonyms Erythorbic acid sodium salt D-Erythro-hex-2-enonic acid, y-lactone, monosodium salt Sodium isoascorbate... 

Another group of compounds called oxygen scavengers retard oxidation by reducing the available molecular oxygen. Products in this group are water soluble and include erythorbic acid [89-65-6] C HgO, and its salt sodium erythorbate [6381-77-7] C HgO Na, ascorbyl pahnitate [137-66-6] 22 38 7 ascorbic acid [50-81-7] C HgO, glucose oxidase [9001-37-0] and sulfites (23). 

Ascorbic Acid and Ascorbic Acid Esters and Saits Vitamin C or ascorbic acid is widespread in nature but sparingly associated with fats of oils because of its hydrophilic nature (95). Ascorbic acid in the free form, salts of sodium and calcium, and esters of stearic and palmitic are commonly used as antioxidants in foods. Erythorbic acid is the D-isomer of naturally present L-ascorbic acid (Figure 10) and is often used as an antioxidant in dried fruits and a cure... 

The WHO has set an acceptable daily intake of erythorbic acid and its sodium salt in foods at up to 5 mg/kg body-weight. ... 

Other food additives have also shown an antifungal effect, for example oxalic acid, saccharin and its sodium salt, erythorbic acid and its salts, acrylamidated and hydroxyethylated starch. Saccharin (46) in an aqueous solution of 2000 mg/kg protects rice from infestation by Piricularia oryzae fungi (Misato et al., 1973). 

Sodium salt, sodium erythorbate, Mercate 20", Neo-Cebi-late. Crystals, sol in water. pH of aq solns of the sodium salt between 5 and 6. A 10% soln, made from commercial grade, may have a pH of 7.2 to 7.9. The free acid is more sol in water (40 g/100 ml H,0) than the sodium salt (16 g/100 ml HjO). 

D-Erythro-hex-2-enonic acid, y-lactone, monosodium salt. See Sodium erythorbate D-Erythro-3-ketohexonic acid lactone. See Erythorbic acid Erythrol. See Erythritol Erythrosin Erythrosin B. See Acid red 51 Erythrosine. See FD C Red No. 3 Acid red 51 Erythrosine bluish. See FD C Red No. 3 Erythrosine yellowish NA. See D C Orange No. 11 Acid red 95... 

Definition Sodium salt of erythorbic acid Empiricai CeHyNaOe H2O Properties Wh. free-flowing cryst. powd., odorless sol. in water forming alkaline sol ns. m.w. 216.12 pH 5-6 (aq. sol ns.)... 

Chemistry and mode of action. Ascorbic acid has two asymmetric carbon atoms at C5 and C9 positions. As depicted in Figure 9.11, the naturally occurring ascorbic acid is the L-ascorbic acid form, which is a diastereoisomer of D-isoascorbic acid (erythorbic acid). These diastereo-isomers have similar, but not necessarily the same, physicochemical properties. While ascorbic acid is an accepted additive in Australia, the EC and the USA, erythorbic acid and its sodium salt are not permitted in the EC for winemaking. Ascorbic acid occurs naturally in grapes in amounts between 10 and 100 mg/1, but may be rapidly oxidised after crushing and as a result of the associated aeration. 

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