D-tagatose synthesis
- Product Name:D-tagatose
- CAS Number:87-81-0
- Molecular formula:C6H12O6
- Molecular Weight:180.16
Yield:57-48-7 29% ,87-81-0 26%
Reaction Conditions:
with water in ethanol at 200; under 75007.5 Torr;Supercritical conditions;
Steps:
Isomerization or hydrolysis of saccharides in subcriticalaqueous ethanol
General procedure: Isomerization of each saccharidewas carried out in a continuous reaction system, inwhich the feed saccharide solution was delivered usingan LC-10AD VP HPLC pump (Shimadzu, Kyoto,Japan), into a stainless steel tubular reactor (0.8 mmI.D. × 1.0 m length) heated in a temperature-controlledsilicone oil bath (Dow Corning Toray Silicone, Tokyo,Japan). Upon exiting the reactor, the effluent wasdirectly introduced to a stainless steel tube immersed inan ice water bath in order to quench the reaction. Thepressure inside the reactor was regulated at ca. 10 MPaand reduced to ambient after cooling using a back-pressurevalve (Upchurch Scientific Inc., Oak Harbor, WA,USA). The residence time was set in the range of 50-500 s. The reaction temperature was set at 180-220 °C.Ethanol concentration was adjusted from 0 to 80 wt%and the substrate feed concentration ranged from 0.5 to5 wt% for maltose isomerization. For other saccharides,the reaction temperature was set at 200 °C; ethanolconcentration was adjusted at 0 (subcritical water) and60 wt% and the feed concentration was 0.5 wt%
References:
Gao, Da-Ming;Kobayashi, Takashi;Adachi, Shuji [Bioscience, Biotechnology and Biochemistry,2016,vol. 80,# 5,p. 998 - 1005]
59-23-4
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$6.00/25g
87-81-0
366 suppliers
$12.50/5g
57-48-7
559 suppliers
$12.00/250G
849585-22-4
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4573-78-8
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87-79-6
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87-81-0
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551-68-8
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96-26-4
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56-82-6
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57-48-7
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$12.00/250G
87-81-0
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$12.50/5g