Tagatose
| Names | |
|---|---|
| IUPAC name
(3S,4S,5R)-2-(hydroxymethyl)oxane-2,3,4,5-tetrol
| |
| Other names
D-Lyxo-Hex-2-ulo-Pyranose
D-Tag D-Tagatopyranose D-Tagatopyranoside | |
| Properties | |
| C6H12O6 | |
| Molar mass | 180.16 g/mol |
| Appearance | Colorless crystalline solid |
| Odor | Odorless |
| Melting point | 133–135 °C (271–275 °F; 406–408 K) (decomposes) |
| Boiling point | Decomposes |
| 55 g/100 ml (20 °C) 85 g/100 ml (90 °C) | |
| Solubility | Insoluble in esters, ethers, hydrocarbons |
| Vapor pressure | ~0 mmHg |
| Hazards | |
| Safety data sheet | Sigma-Aldrich (D-(−)-Tagatose) |
| Related compounds | |
| Related compounds
|
Fructose Glucose |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Tagatose is an organic chemical compound, a hexose monosaccharide.
Contents
Properties
Chemical
When mixed in powdered form with an oxidizer, such as potassium nitrate, it will burn vigorously.
Physical
Tagatose is a crystalline solid, soluble in water. It is odorless, but it's about 92% as sweet as sucrose.
Availability
Tagatose is sold by many food stores. Can also be bought online. Higher purity tagatose can be bought from chemical suppliers, either as individual isomers or racemic mixture.
Preparation
Hydrolysis of lactose yields glucose and galactose. The galactose is isomerized under alkaline conditions to D-tagatose by using calcium hydroxide. The crude tagatose is purified by recrystallization from the mixture.
Projects
- Artificial sweetener
Handling
Safety
Tagatose is generally recognized as safe by the Food and Agriculture Organization and the World Health Organization and has low toxicity. Since it is metabolized differently than sucrose, tagatose has a minimal effect on blood glucose and insulin levels. Tagatose is also approved as a tooth-friendly ingredient for dental products. However, consumption of more than about 30 grams of tagatose in a dose can cause gastric disturbance, as it is mostly processed in the large intestine.
Storage
In clean closed plastic or glass bottles.
Disposal
No special disposal is required. Discard it as you wish.
