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D-Tagatose Produkt Beschreibung

D-TAGATOSE Struktur
87-81-0
CAS-Nr.
87-81-0
Bezeichnung:
D-Tagatose
Englisch Name:
D-TAGATOSE
Synonyma:
TAGLOSE;d-tagatos;P-TAGATOSE;D-TAGATOSE;TAGATOSE, D-;D-(-)-TAGATOSE;Beta-D-tagatose;D-LYXO-HEXULOSE;keto-D-tagatose;TAGATOSE, D-(RG)
CBNumber:
CB5343858
Summenformel:
C6H12O6
Molgewicht:
180.16
MOL-Datei:
87-81-0.mol

D-Tagatose Eigenschaften

Schmelzpunkt:
130-136 °C
Siedepunkt:
232.96°C (rough estimate)
alpha 
D25 -5° (c = 1 in water)
Dichte
1.2805 (rough estimate)
Brechungsindex
-5.5 ° (C=1, H2O)
Löslichkeit
H2O: 0.1 g/mL, clear, colorless
pka
11.86±0.20(Predicted)
Aggregatzustand
neat
Optische Aktivität
[α]/D -5.8±0.8°, c = 1 in H2O
Merck 
14,9030
BRN 
1724555
CAS Datenbank
87-81-0(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher Xi
R-Sätze: 36/37/38
S-Sätze: 24/25-36-26
WGK Germany  3
RTECS-Nr. WW1100000
3-10
HS Code  29400000

D-Tagatose Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-Sätze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

Beschreibung

D-tagatose is a carbohydrate occurring in small amounts in several foods. The solubility in water is approximately 580 g/L at room temperature. As a ketohexose, tagatose reacts in foods in browning reactions like other ketohexoses, for example, fructose.
Tagatose is, depending on the concentration, approximately 92 % as sweet as sucrose and noncariogenic. The caloric value of tagatose is generally set to 1.5 kcal/g.
In the European Union, tagatose is approved as a novel food. In the United States, tagatose has GRAS status and it is also approved in many other countries.

Chemische Eigenschaften

Tagatose is a white, anhydrous crystalline solid. It is a carbohydrate, a ketohexose, an epimer of D-fructose inverted at C-4. It can exist in several tautomeric forms.

Chemische Eigenschaften

white to off-white crystalline powder

Verwenden

A monosaccharide (hexose) that can be used as a low-calorie sweetener, as an intermediate for synthesis of other optically active compounds, and as an additive in detergent, cosmetic, and pharmaceutical formulation.

Verwenden

Sweetener; bulking agent

Vorbereitung Methode

Tagatose is obtained from D-galactose by isomerization under alkaline conditions in the presence of calcium.

Biotechnologische Produktion

Tagatose is produced from galactose, which can be obtained by enzymatic hydrolysis of lactose, the main carbohydrate of milk. Galactose is separated from glucose by chromatography and either isomerized by treatment with calcium hydroxide, subsequent precipitation of calcium carbonate with carbon dioxide, filtration, demineralization with ion exchangers and crystallization [15], or converted enzymatically.
Especially high conversion rates of 96.4 % were obtained with an enzyme extract of an engineered E. coli, and of 60 % at 95 C for A. flavithermus in the presence of borate. Conversion rates of 58 % were reported for an enzyme obtained from a mutant of G. thermodenitrificans [100], of 54 % at 60 C for a recombinant enzyme of Thermus sp. expressed in E. coli, and of more than 50 % at 75 C for E. coli containing an enzyme of A. cellulolytics.
Immobilized enzymes or whole cells were used for practical applications. In some studies, high yields and productivities were achieved.
Immobilized L-arabinose isomerase in calcium alginate produced 145 g/L of tagatose with 48 % conversion of galactose and a productivity of 54 g/Lh in a packed-bed reactor. An enzyme of T. mathranii immobilized in calcium alginate had its optimum at 75 C with a conversion rate of 43.9 % and a productivity up to 10 g/Lh with, however, lower conversion. After incubation of the resulting syrup with S. cerevisiae, purities above 95 % were achieved. The enzyme of T. neapolitana immobilized on chitopearl beds gave a tagatose concentration of 138 g/L at 70 C.
Lactobacillus fermentum immobilized in calcium alginate had a temperature optimum of 65 C. A conversion rate of 60 % and a productivity of 11.1 g/Lh were obtained in a packed-bed reactor after addition of borate.
Direct production of tagatose in yogurt was possible by expressing the enzyme of B. stearothermophilus in Lactobacillus bulgaricus and Streptococcus thermophilus.

Pharmazeutische Anwendungen

Tagatose is used as a sweetening agent in beverages, foods, and pharmaceutical applications. A 10% solution of tagatose is about 92% as sweet as a 10% sucrose solution. It is a low-calorie sugar with approximately 38% of the calories of sucrose per gram. It occurs naturally in low levels in milk products. Like other sugars (fructose, glucose, sucrose), it is also used as a bulk sweetener, humectant, texturizer, and stabilizer, and may be used in dietetic foods with a low glycemic index.

Sicherheit(Safety)

Tagatose is safe for use in food and beverages. It has been used in pharmaceutical products.

Lager

Tagatose is stable under pH conditions typically encountered in foods (pH>3). It is a reducing sugar and undergoes the Maillard reaction.
Tagatose is stable under typical storage conditions. It caramelizes at elevated temperature.

läuterung methode

Crystallise D(-)-tagatose from EtOH/H2O (6:1). It mutarotates from [] 22D +2o (2minutes) to –5.0o (30minutes) (c 4, H2O). The phenylosazone crystallises from aqueous EtOH with m 185-187o(dec), and [] 23D +47o (c 0.82, 2-methoxyethanol). [Totton & Lardy J Am Chem Soc 71 3076 1949, Gorin et al. Canad J Chem 33 1116 1955, Reichestein & Bossard Helv Chem Acta 17 753 1934, Wolfrom & Bennett J Org Chem 30 1284 1965, Beilstein 1 IV 4414.] In D2O at 27o 1H NMR showed the following ratios: -pyranose (79), -pyranose (16), -furanose (1) and -furanose (4) [Angyal Adv Carbohydr Chem 42 15 1984, Angyal & Pickles Aust J Chem 25 1711 1972].

Inkompatibilitäten

A Maillard-type condensation reaction is likely to occur between tagatose and compounds with a primary amine group to form brown or yellow-brown colored Amidori compounds. Reducing sugars will also interact with secondary amines to form an imine, but without any accompanying yellow-brown discoloration.

Regulatory Status

GRAS listed. Included in the FDA Inactive Ingredients Database (oral and rectal solutions).

D-Tagatose Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


D-Tagatose Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 249)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Anhui Hegeng Biotech Engineering Co., Ltd.
+86 13917222891 +86-21-65953622
+86-21-65955999 sales@hegengbt.com CHINA 10 58
Xi'an ZB Biotech Co.,Ltd

sales03@xazbbio.com CHINA 1128 58
Capot Chemical Co.,Ltd.
+86(0)13336195806 +86-571-85586718
+86-571-85864795 sales@capotchem.com China 20012 60
Henan DaKen Chemical CO.,LTD.
+86-371-66670886
info@dakenchem.com China 20911 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hangzhou FandaChem Co.,Ltd.
008615858145714
+86-571-56059825 fandachem@gmail.com CHINA 8909 55
SHANDONG ZHI SHANG CHEMICAL CO.LTD
+86 18953170293
+86 0531-67809011 sales@sdzschem.com CHINA 2941 58
Jinan Carbotang Biotech Co.,Ltd.
+86 15866703830
figo.gao@foxmail.com CHINA 2778 58
hdzhl biotechnology co., ltd
86-13032617415
sales@luchibiology.com CHINA 1275 58
Xi'an Kono chem co., Ltd.,
13289246953 029-86107037
info@konochemical.com CHINA 3000 58

87-81-0(D-Tagatose)Verwandte Suche:


  • d-tagatos
  • TAGATOSE, D-
  • TAGLOSE
  • P-TAGATOSE
  • D-(-)-TAGATOSE
  • (2S,3S,4S,5R)-2-(hydroxymethyl)oxane-2,3,4,5-tetrol
  • D-(-)-Tagatose,mixture of anomers
  • D-lyxo-2-Hexulose
  • Beta-D-tagatose
  • Tagatose (200 mg)
  • D-(-)-TAGATOSE, 96%, MIXTURE OF ANOMERS
  • D-TAGATOSE MIXED ANOMERS
  • D-(-)-TAGATOSE 99+%
  • (3S,4S,5R)-1,3,4,5,6-pentahydroxyhexan-2-one
  • TAGATOSE, D-(RG)
  • D-TAGATOSE
  • D-LYXO-HEXULOSE
  • d-[UL-13C6]tagatose
  • D-tagatopyranose
  • keto-D-tagatose
  • (2R,3S,4S,5R)-2-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol
  • D-TAGATOSE USP/EP/BP
  • D-Tagatose/Tagatose
  • 87-81-0
  • Sugars
  • Tagatose
  • Basic Sugars (Mono & Oligosaccharides)
  • Specialty Synthesis
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  • Carbohydrate Library
  • Carbohydrate Synthesis
  • BioChemical
  • carbohydrate
  • Carbohydrates & Derivatives
  • Intermediates & Fine Chemicals
  • Pharmaceuticals
  • Basic Sugars (Mono & Oligosaccharides)
  • Biochemistry
  • Sugars
  • Tagatose
  • Dextrins、Sugar & Carbohydrates
  • Carbohydrate LibraryCarbohydrates
  • Carbohydrates
  • Carbohydrates A to
  • Carbohydrates P-ZBiochemicals and Reagents
  • Metabolic Libraries
  • Metabolomics
  • Monosaccharide
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