摘要:
The present invention relates to a fermentation process to have a high productivity with a novel mutant of Torula sp. DS101 (KCMM-10171), more specifically, for preparing erythritol using mother liquor produced from purification process, which comprises 30˜60% of trehalulose, 10˜30% of palatinose, 5˜15% of fructose, 5˜25% of glucose and 0˜10% of sucrose.
摘要:
The present invention relates to a fermentation process for preparing erythritol with high productivity with novel mutant of Trigonopsis variabilis, more specifically, for preparing erythritol under optimal fermentation conditions for maximum erythritol production by optimizing the environmental conditions of culture such as pH, temperature and controlling osmotic pressure. A two-stage fermentation was performed to control osmotic pressure. Osmotic pressure was adjusted to a low level during growth phase and to a high level during production phase by adding glucose and NaCl. Therefore, erythritol production could be increased due to the increased mutant cells.
摘要:
The present invention relates to a fermentation process to have a high productivity with a novel mutant of Pichia sp., more specifically, for preparing erythritol under optimal fermentation conditions for maximum erythritol production by optimizing the environmental conditions of culture such as pH, temperature and by controlling osmotic pressure. A two-stage fermentation was performed to control osmotic pressure. Osmotic pressure was adjusted to a low level during growth phase and to a relatively high level during production phase by adding continuously glucose and NaCl or KCl. Therefore, erythritol production could be increased.
摘要:
The present invention relates to a fermentation process to have a high productivity with a novel mutant of Pichia sp., more specifically, for preparing erythritol under optimal fermentation conditions for maximum erythritol production by optimizing the environmental conditions of culture such as pH, temperature and by controlling osmotic pressure. A two-stage fermentation was performed to control osmotic pressure. Osmotic pressure was adjusted to a low level during growth phase and to a relatively high level during production phase by adding continuously glucose and NaCl or KCl. Therefore, erythritol production could be increased.
摘要:
The present invention relates to a fermentation process for preparing xylitol with high productivity and high yield using a novel strain of Candida tropicalis, more specifically, for preparing xylitol under optimal fermentation conditions for maximum xylitol production by optimizing the composition of medium containing xylose and the environmental conditions of culture such as pH, temperature and DO concentration.
摘要:
The present invention relates to a fermentation process for preparing erythritol with high productivity with novel mutant of Trigonopsis variabilis, more specifically, for preparing erythritol under optimal fermentation conditions for maximum erythritol production by optimizing the environmental conditions of culture such as pH, temperature and controlling osmotic pressure. A two-stage fermentation was performed to control osmotic pressure. Osmotic pressure was adjusted to a low level during growth phase and to a high level during production phase by adding glucose and NaCl. Therefore, erythritol production could be increased due to the increased mutant cells.
摘要:
The present invention relates to a fermentation process for preparing xylitol with high productivity using novel mutant cells of Candida parapsilosis, more specifically, for preparing xylitol under optimal fermentation conditions for maximum xylitol production by optimizing the composition of medium containing xylose and the environmental conditions of culture such as pH, temperature and DO concentration, anal controlling the concentration of mutant cells.
摘要:
New mannose-6-phasphate isomerase, mutant enzyme thereof, and a method of producing L-ribose using the enzyme are provided, and more specifically, mannose-6-phosphate isomerase, mutant enzyme thereof, recombinant expression vectors including relevant genes, microorganisms transformed with the vectors, a method of producing mannose-6-phosphate isomerase or mutant thereof in bulk using them, and a high yield method of producing L-ribose using the mannose-6-isomerase or the mutant thereof, are provided.
摘要:
The present invention relates to a D-psicose 3-epimerase variant with improved thermostability by substituting an amino acid at a specific position of an amino acid sequence of a wild type D-psicose 3-epimerase. Further, the present invention provides a recombinant expression vector including a gene of the D-psicose 3-epimerase variant, and a recombinant strain transformed with the recombinant expression vector. Furthermore, the present invention provides an immobilized reactor prepared using the D-psicose 3-epimerase variant or the recombinant strain, and a method of continuously producing D-psicose using the immobilized reactor.
摘要:
New mannose-6-phasphate isomerase, mutant enzyme thereof, and a method of producing L-ribose using the enzyme are provided, and more specifically, mannose-6-phosphate isomerase, mutant enzyme thereof, recombinant expression vectors including relevant genes, microorganisms transformed with the vectors, a method of producing mannose-6-phosphate isomerase or mutant thereof in bulk using them, and a high yield method of producing L-ribose using the mannose-6-isomerase or the mutant thereof, are provided.