D-Glucono-1,5-lacton Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R21:Gesundheitssch?dlich bei Berührung mit der Haut.
R36/38:Reizt die Augen und die Haut.
R46:Kann vererbbare Sch?den verursachen.
R62:Kann m?glicherweise die Fortpflanzungsf?higkeit beeintr?chtigen.
R63:Kann das Kind im Mutterleib m?glicherweise sch?digen.
S-S?tze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S25:Berührung mit den Augen vermeiden.
Beschreibung
Glucono delta-lactone (C6H10O6), molecular weight 178.14, is an
inner ester of gluconic acid. Commonly named gluconolactone,
other synonyms include D-gluconic acid delta-lactone, D-glucono-
1, 5-lactone, and D-delta-gluconolactone. Some of its earliest uses
as a food ingredient were as a flavoring (e.g., sherbets) and to
reduce fat absorption in doughnuts and cones. Glucono deltalactone
tastes sweet initially and has a slightly acid-aftertaste.
Chemische Eigenschaften
Powder
Verwenden
Geogard(R)Ultra is a synergistic blend of gluconolactone and sodium benzoate. This blend provides broad spectrum protection against product spoilage in a variety of personal care formulations. Product Data Sheet
synthetische
Glucono delta-lactone is prepared commercially by the oxidation of glucose with bromine water.
Allgemeine Beschreibung
Gluconolactone is a non-toxic component of the skin. It has anti-oxidant and free radical scavenging effects. Gluconolactone has antiaging and skin-firming properties. It acts as a?β-glucosidase inhibitor. Gluconolactone stimulates cellulase gene expression.
Sicherheitsprofil
Mutation data reported.
When heated to decomposition it emits
acrid smoke and irritating fumes.
l?uterung methode
Crystallise Dglucono-lactone from ethylene glycol monomethyl ether and dry for 1hour at 110o. It can be freed from other sugars via a column of Celite and charcoal (750g of each, 90 x 7.5cm) which is washed with 0.01N formic acid until the pH of the wash is equal to that of the entering acid. The lactone is applied in H2O and eluted with 0.01N formic acid (7L), then eluted with 7.5% EtOH/0.01N formic acid (8L), then 15% EtOH/0.01N formic acid (8L) which removes pentose and isomaltose (the optical rotation of the eluates are used for sugar detection) and finally elution with aqueous formic acid provides glucolactone which is obtained by evaporating or freeze drying. Its solubility in H2O is 60% and 1% in EtOH. A solution in H2O is slightly acidic, and the lactone dissolves in an equivalent of aqueous NaOH to form sodium D-gluconate [527-07-1] M 218.1, m 2002 0 6o(dec), [ ] D 25 +12o (c 10, H2O), pK2 5 3.6. [cf p 553, Smith & Whelan Biochemical Preparations 10 127 1963, Beilstein 3 IV 1255.]
D-Glucono-1,5-lacton Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
