グルコン酸

化学的特性d-Gluconic acid is an acid sugar composed of white crystals with a milk-acidic taste. In aqueous solutions, it is in equilibrium with gamma- and delta-gluconolactones. It is prepared by enzymatic oxidation of glucose and strains of the microorganisms used to supply the enzyme action are nonpathogenic and nontoxicogenic to man or other animals. This substance is used as a component of bottle rinsing formulations, at levels not to exceed good manufacturing practice.An FDA letter to a trade association revoking affirmation of general recognition of safety in dietary supplements was dated April 9, 1970.

解説D-グルコン酸,ヘキソン酸の一種．D-グルコン酸およびその6-リン酸エステルは，ペントースリン酸サイクルなど糖の代謝の中間体として，広く生物体中に見いだされる．森北出版「化学辞典（第2版）

用途医薬品原料、食料品原料

用途有機合成原料、呈味料及び酸味料原料。

説明Gluconic acid is an organic compound with molecular formula C6H12O7 and condensed structural formula HOCH2(CHOH)4COOH. It is one of the 16 stereoisomers of 2,3,4,5,6-penta hydroxy hexanoic acid. In aqueous solution at neutral pH, gluconic acid forms the gluconate ion. The salts of gluconic acid are known as "gluconates". Gluconic acid, gluconate salts, and gluconate esters occur widely in nature because such species arise from the oxidation of glucose. Some drugs are injected in the form of gluconates.

天然物の起源Gluconic acid occurs naturally in fruit, honey, kombucha tea, and wine. As a food additive ( E574 ), it is an acidity regulator. It is also used in cleaning products where it dissolves mineral deposits especially in alkaline solution. The gluconate anion chelates Ca2+,Fe2+, Al3+, and other metals. In 1929 Horace Terhune Herrick developed a process for producing the salt by fermentation. Calcium gluconate, in the form of a gel, is used to treat burns from hydrofluoric acid; calcium gluconate injections may be used for more severe cases to avoid necrosis of deep tissues. Quinine gluconate is a salt between gluconic acid and quinine, which is used for intramuscular injection in the treatment of malaria. Zinc gluconate injections are used to neuter male dogs. Iron gluconate injections have been proposed in the past to treat anemia.

使用Gluconic Acid is an acidulant that is a mild organic acid which is the hydrolyzed form of glucono-delta-lactone. it is prepared by the fermentation of dextrose, whereby the physiological d-form is produced. it is soluble in water with a solubility of 100 g/100 ml at 20°c. it has a mild taste and at 1% has a ph of 2.8. it functions as an antioxidant and enhances the function of other antioxidants. in beverages, syrups, and wine, it can eliminate calcium turbidities. it is used as a leavening component in cake mixes, and as an acid component in dry-mix desserts and dry beverage mixes.

使用用途1. 食品分野 グルコン酸は不揮発性であること、酸味度が低いという特徴から、食品添加物として使用されています。主な用途は、米飯、餅等の米加工品に対するpH調整剤や、各種飲料、漬物、ドレッシング、タレ等に対する調味料及びpH調味料です。 2. 医療分野 医療分野では、主に鉄の欠乏症に対する薬として利用されています。取り込まれたグルコン酸イオンには体内の金属イオンを効果的に吸収されやすくする作用があります。 3. 工業分野 工業分野では、金属塩の沈殿の除去や金属を洗浄する際に弱い酸として使われることもあります。