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D-Gluconolactone is used in cosmetic product and as a coagulant in tofu processing.
D-Gluconolactone is used Food Acidulant, Tofu Coagulant, pH Control Agent, Cosmetics, Sequestrant, Flavoring Agent, Baby Food, Baked Food, Canned Foods, Dairy Products, Cured Meats, Frankfurters, Genoa Salami, Sausages, Dessert Mixes, Processed Cheese, Fish Products, Spice, Salads, Sauces, Binder, Curing Accelerator, Pickling Agent, Leavening agent.
CAS Number: 90‑80‑2
EC Number: 202‑016‑5
IUPAC Name: D‑Glucono‑1,5‑lactone
Molecular formula: C₆H₁₀O₆
Molecular weight: 178.14 g/mol
SYNONYMS:
D‑Gluconic acid δ‑lactone, D‑glucono‑1,5‑lactone, Glucono‑δ‑lactone, D‑δ‑gluconolactone, GDL, D‑gluconic acid lactone, gluconolactone, D-glucono-1,5-lactone, Gluconic acid lactone, 1,5-Gluconolactone, Glucono delta-lactone, D-Gluconic acid lactone, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one, D-Gluconic acid delta-lactone, 1,5-D-Gluconolactone, Gluconic lactone, Glucono delta lactone, Gluconic delta-lactone, D-delta-Gluconolactone, delta-D-Gluconolactone, Deltagluconolactone, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-one, Fujiglucon, D-Gluconic delta-lactone, glucono-delta-lactone, beta-Glucono-1,5-lactone, Lysactone, Riken lactone, D-Gluconic acid-delta-lactone, HSDB 488, UNII-WQ29KQ9POT, WQ29KQ9POT, AI3-19578, EINECS 202-016-5, INS NO.575, DTXSID0026549, glucono-1,5-lactone, CHEBI:16217, INS-575, NSC-34393, NSC-758238, DTXCID406549, E-575, EC 202-016-5, RENACIDIN COMPONENT GLUCONOLACTONE, D-glucono-delta-lactone, GLUCONOLACTONE (II), GLUCONOLACTONE [II], GDL, GLUCONOLACTONE (MART.), GLUCONOLACTONE [MART.], GLUCONOLACTONE (USP-RS), GLUCONOLACTONE [USP-RS], 3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-one, GLUCONOLACTONE (USP MONOGRAPH), GLUCONOLACTONE [USP MONOGRAPH], gluconolactones, CHEBI:24267, GLUCONOLACTONE COMPONENT OF RENACIDIN, 202-016-5, D-GLUCONIC ACID DELTA-LACTONE (O'Neil, M.J. (ed.). The Merck Index-An Encyclopedia of Chemicals, Drugs, and Biologicals. 13th Edition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 793), GLUCONO DELTA LACTONE (O'Neil, M.J. (ed.). The Merck Index-An Encyclopedia of Chemicals, Drugs, and Biologicals. 13th Edition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 793), 90-80-2, delta-gluconolactone, d-(+)-Glucono-1,5-lactone, D-Gluconolactone, Glucarolactone, D-Aldonolactone, D-(+)-Gluconic acid delta-lactone, Gluconolactone [USP], 1335-57-5, MFCD00006647, D-threo-Aldono-1,5-lactone, Gluconic Acid Anhydride, Gluconic acid, delta-lactone, D-, Glucono .delta. lactone, Glucono .delta.-lactone, .delta.-D-Gluconolactone, Gluconic Acid delta-Lactone, 4253-68-3, d-Gluconic acid .delta.-lactone, D-(+)-Gluconic acid |A-lactone, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-one, Gluconolactone (USP), NSC 34393, 135820-79-0, Glucolactone, d-gluconic acid d-lactone, CAS-90-80-2, .delta.-Gluconolactone, LGC, D-Gluconic acid-1,5-lactone, D-(+)-Gluconic acid d-lactone, Gluconic acid lactone (6CI), NSC34393, delta-Aldonolactone, Gluconate, lactone, NCGC00095002-01, delta gluconolactone, 1,2,3,4,5-Pentahydroxycaproic acid delta-lactone, gamma-Gluconolactone, D-(+)-Dextronic acid delta-lactone, D-Glucono-d-lactone, Glucono gamma-lactone, Glucono 1,5-lactone, D-glucono1,5-lactone, gluconic acid d-lactone, delta-delta-Gluconolactone, 1,5-delta-Gluconolactone, bmse000230, delta-Gluconic acid lactone, delta-Glucono-delta-lactone, GLUCONOLACTONE [MI], delta-Glucono-1,5-lactone, delta-Gluconic delta-lactone, SCHEMBL15320, GLUCONOLACTONE [HSDB], delta-Gluconic acid d-lactone, MLS002207105, D-(+)-Glucono-delta-lactone, D-Gluconic acid 1,5-lactone, orb1310156, GLUCONOLACTONE [WHO-DD], CHEMBL1200829, HY-I0301R, delta-Gluconic acid 1,5-lactone, delta-Gluconic acid delta-lactone, delta-Gluconic acid-1,5-lactone, delta-Gluconic acid-delta-lactone, D(+)-Gluconic acid gamma-lactone, HMS6019E04, CS-M3768, D-(+)-Gluconic acid-delta lactone, delta-(+)-Gluconic acid d-lactone, GLUCONO DELTA-LACTONE [FCC], HY-I0301, GLUCONOLACTONE [ORANGE BOOK], Tox21_111383, Tox21_200429, BDBM50366565, MSK012394, GLUCONO-DELTA-LACTONE [VANDF], AKOS016843888, Tox21_111383_1, DB04564, delta-(+)-Gluconic acid-delta lactone, DS-4779, (3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)-tetrahydro-2H-pyran-2-one, NCGC00257983-01, NCGC00344522-01, AC-13150, D-(+)-Glucono-1,5-lactone (Standard), E575, SMR001306715, G0039, NS00074107, EN300-97037, C00198, D04332, P19765, D-(+)-Gluconic acid delta-lactone, >=99.0%, Gluconolactone, meets USP testing specifications, Q114174, 3,4,5-Trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-one, D-(+)-Gluconic acid delta-lactone, analytical standard, Z1255427181, A88519CB-A562-4C9C-B925-0A6B1701F841, Gluconolactone, United States Pharmacopeia (USP) Reference Standard, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)-tetrahydropyran-2-one, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one (non-preferred name), (3S,4R,5R,6S)-3,4,5-TRIHYDROXY-6-(HYDROXYMETHYL)TETRAHYDRO-2H-PYRAN-2-ONE; GLUCONOLACTONE, D-Glucono-1,5-lactone, (3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)oxan-2-one, D-dluconic acid, d-lactone, D-gluconic acid 1,5-lactone, d-gluconic acid d-lactone, D-(+)-gluconic acid d-lactone, D-gluconic acid delta-lactone, D-gluconic acid lactone, D-gluconic acid-1,5-lactone, D-(+)-gluconic acid-d lactone, glucono delta lactone, glucono delta-lactone, D-glucono-1,5-lactone, D-glucono-d-lactone, glucono-delta-lactone, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-one, (3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one, (3S,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one, Glucono delta-lactone, δ-Gluconolactone, 1,2,3,4,5-Pentahydroxycaproic acid δ-lactone, D-(+)-Dextronic acid δ-lactone, beta-Glucono-1,5-lactone, 1,5-D-Gluconolactone, 1,5-Gluconolactone, D-Gluconic acid delta-lactone, D-Gluconic acid lactone, D-Gluconic delta-lactone, D-Glucono-1,5-lactone, D-delta-Gluconolactone, Deltagluconolactone, Gluconic acid lactone (6CI), Gluconic delta-lactone, Glucono delta lactone, Glucono delta-lactone, delta-Gluconolactone, D-Gluconic acid, delta-lactone, D-Gluconic acid-delta-lactone, Gluconic acid, delta-lactone, D-, delta-D-Gluconolactone, [ChemIDplus] Fujiglucon, [Merck Index] Lysactone, GDL, Gluconic acid –1,5–lactone, Pentahydroxy hexane acid–1,5–lactone, [IUCLID] D(-)-Pentahydroxycaproic acid-1,5-lactone, Glucono-1,5-lactone, Pentahydroxycaproic acid 1,5-lactone, [OECD SIDS: IUCLID Data Set] D-(+)-Glucono-1,5-lactone, [Alfa Aesar MSDS], δ-Gluconolactone, 1,2,3,4,5-Pentahydroxycaproic acid δ-lactone, D-(+)-Dextronic acid δ-lactone, D-(+)-Gluconic acid δ-lactone, D-(+)-Dextronic acid delta-lactone, GDL, Glucono Delta Lactone, Glucono-delta-Lactone, d-Gluconolactone, D-(+)-Dextronic acid d-lactone, E575, Gluconic acid, δ-lactone, D-, δ-D-Gluconolactone, D-δ-Gluconolactone, D-Gluconic acid-1,5-lactone, D-Glucono-1,5-lactone, Gluconolactone, δ-Gluconolactone, 1,5-Gluconolactone, Glucono-δ-lactone, D-(+)-Gluconic acid-δ lactone, D-Glucono-δ-lactone, D-Gluconic δ-lactone, d-(+)-Glucono-1,5-lactone, Fujiglucon, GDL, Gluconic acid lactone, Gluconic δ-lactone, D-Gluconic acid lactone, gluconolactone, delta-gluconolactone, d-glucono-1,5-lactone, d-gluconolactone, 1,5-gluconolactone, d-gluconic acid lactone, gluconic acid lactone, glucono delta-lactone, 1,5-d-gluconolactone, gluconic lactone, Glucono-δ-lactone,
Delta gluconolactone, D-gluconolactone, Gluconic acid lactone, D-gluconic acid delta-lactone, D-glucono-1,5-lactone, (3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one, 1,5-D-Gluconolactone, 1,5-Gluconolactone, D-Aldonolactone, D-Gluconic acid delta-lactone, D-Gluconic acid lactone, D-Gluconolactone, D-threo-aldono-1,5-Lactone, delta-D-Gluconolactone, delta-Gluconolactone, Glucarolactone, Gluconic acid lactone, Gluconic delta-lactone, Gluconic lactone, D-Gluconate delta-lactone, D-Gluconate δ-lactone, D-Gluconic acid δ-lactone, D-Gluconate lactone, δ-D-gluconolactone, δ-Gluconolactone, Gluconate lactone, Gluconic δ-lactone, 1,5-delta-Gluconolactone, 3,4,5-Trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-one, D-(+)-Gluconic acid D-lactone, D-(+)-Gluconic acid-delta lactone, D-delta-Gluconolactone, D-Gluconic acid 1,5-lactone, D-Gluconic acid D-lactone, D-Gluconic acid-1,5-lactone, D-Gluconic acid-delta-lactone, D-Gluconic delta-lactone, D-Glucono-1,5-lactone, D-glucono-D-Lactone, delta-(+)-Gluconic acid D-lactone, delta-Aldonolactone, delta-Gluconic acid 1,5-lactone, delta-Gluconic acid D-lactone, delta-Gluconic acid lactone, delta-Gluconic acid-1,5-lactone, delta-Glucono-1,5-lactone, Fujiglucon, Gluconate, lactone, Glucono 1,5-lactone, Glucono delta lactone, Glucono delta-lactone, GDL (Gluconate), Glucono-delta-lactone, (3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)oxan-2-one, D-(+)-Gluconic acid delta-lactone, D-(+)-Gluconic acid δ-lactone, D-(+)-Glucono-1,5-lactone, D-(+)-Glucono-delta-lactone, D-(+)-Glucono-δ-lactone, D-(+)-Glucose delta-lactone, D-(+)-Glucose δ-lactone, D-Glucono-delta-lactone, D-Glucono-δ-lactone, Glucono-δ-lactone, Gluconolactone, Lysactone
D-Gluconolactone is a white, odourless crystalline powder or granular.
D-Gluconolactone is an aldono-1,5-lactone obtained from D-gluconic acid.
D-Gluconolactone has a role as an animal metabolite and a mouse metabolite.
D-Gluconolactone is a gluconolactone and an aldono-1,5-lactone.
D-Gluconolactone is functionally related to a D-gluconic acid.
Additionally, the Panel concluded the available data are insufficient to make a determination that Glucarolactone is safe under the intended conditions of use in cosmetic formulations.
D-Gluconolactone is a naturally-occurring food additive used as a sequestrant, an acidifier, or a curing, pickling, or leavening agent.
D-Gluconolactone is a cyclic ester of D-gluconic acid.
D-Gluconolactone is a white odorless crystalline powder.
D-Gluconolactone is a metabolite found in or produced by Escherichia coli.
D-Gluconolactone is a Calculi Dissolution Agent.
The mechanism of action of D-Gluconolactone is as an Irrigation.
D-Gluconolactone has been reported in Tetranychus urticae, Lotus burttii, and other organisms with data available.
D-Gluconolactone is a naturally occurring polyhydroxy acid (PHA) with metal chelating, moisturizing and antioxidant activity.
D-Gluconolactone can be produced by enzymatic oxidation of D-glucose oxidation.
D-Gluconolactone's ability in free radicals scavenging accounts for its antioxidant property.
D-Gluconolactone is a small molecule drug with a maximum clinical trial phase of IV that was first approved in 1990.
Glucono-δ-lactone (GDL), also known as D-Gluconolactone, is an organic compound with the formula (HOCH)3(HOCH2CH)CO2.
A colorless solid, D-Gluconolactone is an oxidized derivative of glucose.
D-Gluconolactone is typically produced by the aerobic oxidation of glucose in the presence of the enzyme glucose oxidase.
The conversion cogenerates hydrogen peroxide, which is often the key product of the enzyme:
C6H12O6 + O2 → C6H10O6 + H2O2
D-Gluconolactone spontaneously hydrolyzes to gluconic acid:
C6H10O6 + H2O → C6H12O7
D-Gluconolactone belongs to the class of organic compounds known as D-Gluconolactones.
These are polyhydroxy acids containing a D-Gluconolactone molecule, which is characterized by a tetrahydropyran substituted by three hydroxyl groups, one ketone group, and one hydroxymethyl group.
D-Gluconolactone is a polyhydroxy acid used in the dissolution of calculi and as an additive in various drug products to maintain consistency and other characteristics.
D-Gluconolactone is a naturally-occurring food additive used as a sequestrant, an acidifier, or a curing, pickling, or leavening agent.It is a cyclic ester of D-gluconic acid.
D-Gluconolactone is a white odorless crystalline powder.
D-Gluconolactone is a naturally-occurring food additive that is metabolized to glucose.
A lactone (cyclic ester) of D-gluconic acid.
D-Gluconolactone hydrolyzes in water to gluconic acid, giving fruit juices and wine a tangy taste.
D-Gluconolactone, a significant molecule with diverse applications, finds utility in various scientific disciplines.
This polyhydroxy acid (PHA) holds immense value in biochemistry.
D-Gluconolactone′s scientific research applications span wide.
Notably, D-Gluconolactone acts as an inhibitor of the enzyme β-galactosidase, which plays a pivotal role in carbohydrate metabolism.
This enzyme is essential for the breakdown and absorption of dietary carbohydrates.
By binding to the enzyme′s active site, D-Gluconolactone effectively hinders the breakdown of carbohydrates.
Glucono delta-lactone (abbreviation GDL) or D-Gluconolactone, an inner ester of gluconic acid, is a naturally occurring ingredient commonly used as a coagulant in tofu making, a leavening acid in bakery, a mild acidulant in cheese and meat products, and a sequestrant in some food applications.
The European food additive number for D-Gluconolactone is E575.
D-Gluconolactone is kosher, halal, vegan and GMO free.
In aqueous solution, D-Gluconolactone rapidly dissolves and the lactone ring opens up and slowly hydrolyzes to gluconic acid, thus producing mild acidification.
And there is an equilibrium between D-gluconic acid (55% – 66%) and the delta and gamma lactones.
USES and APPLICATIONS of D-GLUCONOLACTONE:
Other food uses of D-Gluconolactone: Cheese, dairy products, canned food, desserts, salads, sauces, soups, mayonnaise and so on.
Food additive (E number E575): D-Gluconolactone is used as acidifier, sequestrant, curing/pickling or leavening agent; often used in tofu/coagulation, cheese (especially feta), canned vegetables, dressings, bakery goods.
Acidulant: D-Gluconolactone hydrolyzes gradually to gluconic acid in water, providing controlled pH reduction and mild flavor in foods and beverages (salad dressings, instant drinks, energy drinks, syrups).
Chelating agent: D-Gluconolactone sequesters metal ions in cleaning formulations, dairy (prevents milkstone), breweries (beerstone) and textile-resin curing applications.
Cosmetics & personal care: D-Gluconolactone is used as skin-conditioning agent, chelator, anti-acne and anti-aging ingredient (e.g. hydrating, antioxidant, mild exfoliant).
Biological & analytical use: D-Gluconolactone forms via glucose oxidase oxidation of glucose; used in enzymatic assays and research; also used as enzyme inhibitor (e.g. β‑glucosidase).
D-Gluconolactone is used in cosmetic product and as a coagulant in tofu processing.
Use of D-Gluconolactone: Food Acidulant, Tofu Coagulant, pH Control Agent, Cosmetics, Sequestrant, Flavoring Agent, Baby Food, Baked Food, Canned Foods, Dairy Products, Cured Meats, Frankfurters, Genoa Salami, Sausages, Dessert Mixes, Processed Cheese, Fish Products, Spice, Salads, Sauces, Binder, Curing Accelerator, Pickling Agent, Leavening agent.
D-Gluconolactone is a neutral cyclic ester of gluconic acid, produced with the acid by fermentation of glucose.
D-Gluconolactone is separated from the acid by crystallisation.
D-Gluconolactone is a fine, white crystalline powder, freely soluble in water.
D-Gluconolactone is practically odourless and has a slightly sweet taste.
Non toxic, D-Gluconolactone is completely metabolised in the body like a carbohydrate.
When added into an aqueous solution, D-Gluconolactone rapidly dissolves, and subsequently slowly hydrolyses to gluconic acid, thus producing a gentle acidification in the same way as lactic acid-producing bacteria.
In solution both gluconic acid and D-Gluconolactone are always in balance.
The equivalent point and the rate of transformation are related to concentration, temperature and pH-value.
D-Gluconolactone, also known as glucono-delta-lactone or GDL (gluconate), belongs to the class of organic compounds known as D-Gluconolactones.
These are polyhydroxy acids (PHAs) containing a D-Gluconolactone molecule, which is characterized by a tetrahydropyran substituted by three hydroxyl groups, one ketone group, and one hydroxymethyl group.
D-Gluconolactone is a lactone of D-gluconic acid.
D-Gluconolactone can be produced by enzymatic oxidation of D-glucose via the enzyme glucose oxidase.
D-Gluconolactone is a fundamental metabolite found in all organisms ranging from bacteria to plants to animals.
D-Gluconolactone has metal chelating, moisturizing and antioxidant activities.
D-Gluconolactone's ability in free radicals scavenging accounts for its antioxidant properties.
D-Gluconolactone, is also used as a food additive with the E-number E575.
In foods, D-Gluconolactone is used as a sequestrant, an acidifier or a curing, pickling, or leavening agent.
D-Gluconolactone is also used as a coagulant in tofu processing.
D-Gluconolactone is widely used as a skin exfoliant in cosmetic products, where it is noted for its mild exfoliating and hydrating properties.
Pure D-Gluconolactone is a white odorless crystalline powder.
D-Gluconolactone is pH-neutral, but hydrolyses in water to gluconic acid which is acidic, adding a tangy taste to foods.
Gluconic acid has roughly a third of the sourness of citric acid.
One gram of D-Gluconolactone yields roughly the same amount of metabolic energy as one gram of sugar.
D-Gluconolactone is a food additive with the E-number E575 used as a sequestrant, an acidifier, or a curing, pickling, or leavening agent.
D-Gluconolactone is a lactone of D-gluconic acid.
D-Gluconolactone is a white odorless crystalline powder.
D-Gluconolactone has been marketed for use in feta cheese.
D-Gluconolactone is pH-neutral, but hydrolyses in water to gluconic acid which is acidic, adding a tangy taste to foods, though it has roughly a third of the sourness of citric acid.
It is metabolized to 6-phospho-D-gluconate; one gram of D-Gluconolactone yields roughly the same amount of metabolic energy as one gram of sugar.
Upon addition to water, D-Gluconolactone is partially hydrolysed to gluconic acid, with the balance between the lactone form and the acid form established as a chemical equilibrium.
The rate of hydrolysis of D-Gluconolactone is increased by heat and high pH.
The yeast Maudiozyma bulderi can be used to ferment D-Gluconolactone to ethanol and carbon dioxide.
The pH value greatly affects culture growth.
D-Gluconolactone at 1 or 2% in a mineral media solution causes the pH to drop below 3.
D-Gluconolactone is also a complete inhibitor of the enzyme amygdalin beta-glucosidase at concentrations of 1 mM.
D-Gluconolactone is used in cleaning compounds, the dairy and brewery industries, textile printing, and tofu production (coagulant).
D-Gluconolactone is used as a curing or pickling agent, flavoring agent, formulation aid, leavening agent, pH control agent, and sequestrant for foods.
D-Gluconolactone is permitted for use as an inert ingredient in non-food pesticide products.
D-Gluconolactone is important intermediate in carbohydrate metabolism in mammals.
D-Gluconolactone is used for industrial cleaning, metal surface treatment, textile bleach stabilizing, aluminum processing, and as a chelating agent in cement set retarding, cleaning products, personal care products, pharmaceuticals, and foods.
-Cosmetics uses of D-Gluconolactone:
D-Gluconolactone is commonly called D-Gluconolactone when used in cosmetics and personal care products.
D-Gluconolactone is generally used for its chelating and skin conditioning properties which are suggested by the European Commission database for information on cosmetic substances and ingredients.
We may find products that contain D-Gluconolactone: Skin care products, Hair products, toothpaste, deodorant, Cream, and lotions.
-Leavening acid in bakery ues of D-Gluconolactone:
The combination of D-Gluconolactone and baking soda would be a good choice to form a baking powder as a leavening agent in baked food.
When the baking powder in contact with water, D-Gluconolactone reverts to gluconic acid that reacts with sodium bicarbonate to produce carbon dioxide, which increases dough volume and the bread to rise.
The following are the preparation steps to make the bakery with D-Gluconolactone.
Step 1: Mix D-Gluconolactone with baking soda to form a quick-acting leavening agent with a ratio of 2:1.
Step 2: 1. Weight 500 grams of flour. 2. Weight 10.25g the mixture of D-Gluconolactone with baking soda which prepared in step 1. 2.5% of the weight of the flour. 3 Put the mixture in flour and stir.
Step 3: Add 300 grams of cold water into the mixture prepared in step 2.
Step 4: Knead the dough to be soft and there is no need to add any fermented material.
Step 5: Steam it and you can get a soft bakery product.
-Acidifier in meat products uses of D-Gluconolactone:
Glucono delta-lactone can be used as an acidity regulator and a color enhancer in meat products, especially for dry-cured sausages, where a slow release of acid is required.
D-Gluconolactone also function as a preservative as it inhibits the growth of bacteria by lowering the pH.
D-Gluconolactone can enhance meat preservation by reducing the level of nitrite, accelerate the curing process and produce a more stable product with an extended shelf life.
-Color stabilizer ues of D-Gluconolactone:
D-Gluconolactone can provide a bright color and make the color unchanged/stable in meat products.
Also, D-Gluconolactone can keep the meat products fresh & tender, at the same time offer a good preservative effect, and reduce the residual amount of nitrosamines by lowering the usage of nitrites.
-Acidifier uses of D-Gluconolactone:
Acidification is essential for the coagulation of meat proteins in the production of raw sausages.
The ripening and curing process of sausages will be efficient if added with D-Gluconolactone.
And the sensory is easy to mask as the acidification of D-Gluconolactone is mild compared with other food acidulants, a third of the sourness of citric acid.
-Approved uses and usage of D-Gluconolactone:
D-Gluconolactone is classified in class I with the use level “quantum satis”, which means there is no specific limit in its uses.
The following food may contain D-Gluconolactone:
*Mozzarella.
*Ripened cheese (products), whey cheese.
*Canned or bottled fruit and vegetables.
*Fresh (pre-cooked) pasta.
*Biscuits and rusks for infants and young children.
USES of D-GLUCONOLACTONE:
D-Gluconolactone is a multifunctional ingredient that can be used as a coagulant in tofu, a leavening acid in the bakery (e.g. bread, cakes & pastries), controlled release acidulant & curing accelerator in processed meat & seafood, mild acidulant, chelating agent, and buffering agent in food.
-COAGULANT IN TOFU
D-Gluconolactone can be used as a coagulant in tofu for its gradual acidification initiates the curdling of the protein.
D-Gluconolactone can replace the function of nigari or in combination uses with nigari in tofu.
The following steps are how to make silken tofu with GDL.
Step 1: Select beans
D-Gluconolactone is recommended to pick light white soybeans with good color and high protein content.
Step 2: Soaking beans
The time and temperature of soaking beans should be appropriate.
Beans are easy to ferment and protein is easy to lose if soaking time is too long.
The quality & yield of tofu will be decreased if with a short soaking time, along with less soy milk.
Quantity: for example, soak 500 g of dry soybeans to obtain 1000 g – 1100 g of wet soybeans.
Temperature and time: Soak 6 – 7 hours at 15 °C, or 5 hours at 20 °C, and 10 hours or more if in winter.
Water & PH: it is better to use soft water, such as surface water or tap water to soak beans.
It is also recommended to add baking soda, about one-thousandth of the weight of the bean to adjust the pH value of the water to promote protein leach.
The amount of water used should make sure to submerge soybeans completely.
Step 3: Refining
D-Gluconolactone can be used with stone grinding or refining machine.
D-Gluconolactone is required to grind the wet beans twice and adding water while grinding.
1500 grams added at the first refining, and 750 g for the second refining.
Step 4: Discharge Air Out
Put 20-30 grams of edible oil in the heated pot until the oil is boiling, then add a small amount of warm water (about 50 °C), and pour into the soy milk and stir for 5 minutes.
This step is mainly to discharge the air out of the soy milk and reduce the viscosity to make sure soy milk can filter quickly and filter thoroughly.
Step 5: Filter
Cloth or gauze can be used as a filter to separate the soy dregs and soy milk.
60°C water is used several times, and stir the filter residue while adding water.
Totally, around 1750 grams of water is used in this process and finally get the pure soy milk.
This step is to filter soy dregs and get soy milk or obtain protein completely.
Step 6: Cooking
Cooking pure soy milk with a fierce fire.
Step 7: Making Tofu
There are two ways to make soft tofu, Cold process or thermal process.
Cold process: cool the soy milk down below 30 °C, then add 9 (can be less if with nigari) grams of GDL and stir it.
Then put soy milk in a smooth box or in a food bag, steam it for 25 minutes or directly place the box or bag in boiling water for 25 minutes and wait it cools to form tofu.
Thermal process: cool the soy milk down to 90 °C, then put GDL and stir it.
Soon put soy milk into the box for 15 minutes.
PROPERTIES of D-GLUCONOLACTONE:
D-Gluconolactone is the less commonly used than other food acidity regulators, such as citric acid, malic acid and fumaric acid.
D-Gluconolactone has two major differentiating properties:
*A slow-release acidulant:
D-Gluconolactone provides a progressive and continuous decrease of pH due to the slow hydrolysis to gluconic acid.
*Less tart than other common acidulants:
the initial slightly sweet taste making the final flavour of an aqueous solution of D-Gluconolactone Less tart.
SOLUBILITY of D-GLUCONOLACTONE:
In water: freely soluble in water, 59g/100 mL (water) at 25°C.
In organic solvents: sparingly soluble in alcohol.
