Isomerization and Epimerization of Galactose to Tagatose and Talose in a Phosphate Buffer Containing Organic Solvents under Subcritical Water Conditions
Isomerization and Epimerization of Galactose to Tagatose and Talose in a Phosphate Buffer Containing Organic Solvents under Subcritical Water Conditions
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亚临界水条件下含有机溶剂的磷酸盐缓冲液中半乳糖异构化和差向异构化为塔格糖和塔罗糖
DOI:
10.1021/acs.iecr.1c00682
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发表时间:
2021
影响因子:
4.2
通讯作者:
Kobayashi Takashi
中科院分区:
文献类型:
--
作者:
Onishi Yuichiro;Furushiro Yuya;Adachi Shuji;Kobayashi Takashi
In this study, galactose was treated under subcritical water conditions at 140 °C and 5 MPa in a mixture of 10 mmol/L sodium phosphate buffer (pH 7.0) and ethanol using a tubular reactor. The effects of ethanol concentration (0–60 wt %) on the isomerization and epimerization of galactose, respectively, to tagatose and talose were investigated. Both ethanol and buffer synergistically improved the isomerization behavior. Increasing the ethanol concentration up to 60 wt % improved the tagatose yield from 13 to 16% at 300 s. In contrast, the yield of talose slightly decreased from 1.5 to 1.2% at 300 s when ethanol was added to the phosphate buffer. The pH of treated solution at 25 °C decreased with an increase in the duration of treatment under each treatment condition. However, the decrease in pH was moderately suppressed by the addition of ethanol, which could be one of the reasons for the improvement in tagatose yield. The addition of other organic solvents, such as alkanols, polyols, acetonitrile, and pyridine, also improved the tagatose yield.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Hualing Xiao;Guangfa Wang;Peng Wang;Yingxia Li
通讯作者:
Yingxia Li
影响因子:
0.6
作者:
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通讯作者:
Takashi Kobayashi
影响因子:
0.6
作者:
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通讯作者:
S. Adachi
影响因子:
1.1
作者:
Nagasawa T;Sato K;Kasumi T
通讯作者:
Kasumi T
影响因子:
3.9
作者:
Da-Ming Gao;Takashi Kobayashi;S. Adachi
通讯作者:
Da-Ming Gao;Takashi Kobayashi;S. Adachi