摘要:
The present teachings provide a beta amylase with maltogenic properties. Non-naturally occuring nucleic acids encoding the beta amylase and variants thereof, expression vectors, formulations, and host cells are also provided. Additional embodiments of the present teachings provide various methods of use and methods of manufacturing.
摘要:
Disclosed are compositions and methods relating to an alpha-amylase from a Bacillaceae family member. The compositions and methods are useful, for example, for starch liquefaction and saccharification, for cleaning starchy stains in laundry, dishwashing, and other applications, for textile processing ( e.g. , desizing), in animal feed for improving digestibility, and for baking and brewing.
摘要:
A fungal alpha-amylase is provided from Aspergillus fumigatus (AfAmyl). AfAmyl has an optimal pH of 3.5 and is operable at 30 - 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and an isoamylase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AfAmyl also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DPI + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii. This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
摘要:
A fungal alpha-amylase is provided from Aspergillus terreus (AtAmy1). AtAmy1 has an optimal pH of 4.5 and is operable at 30 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and a pullulanase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AtAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii. This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
摘要:
Fungal glucoamylases from Aspergillus fumigatus - expressed in Trichoderma reesei host cells (AfGATR) are provided. Trichoderma reesei host cells express AfGATRs at higher, or at least comparable, levels to natively expressed AfGA Aspergillus fumigatus . AfGATRs, including AfGA1TR and AfGA2TR, exhibit high activity at elevated temperatures and at low pH, so AfGATRs can be used efficiently in a process of saccharification in the presence of alpha-amylase, such as Aspergillus kawachii alpha-amylase (AkAA). AfGATRs advantageously catalyze starch saccharification to an oligosaccharide composition significantly enriched in DP1 (i.e., glucose) compared to the products of saccharification catalyzed by Aspergillus niger glucoamylase (AnGA) or native AfGA expressed in Aspergillus fumigatus . AfGATRs such as AfGA1TR, AfGA2TR or a variant thereof can be used at a lower dosage than AnGA and natively expressed AfGAs to produce comparable levels of glucose.
摘要:
The present compositions and methods relate to a beta-mannanase from Bacillus licheniformis , polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
摘要:
The present compositions and methods relate to a beta-mannanase from Paenibacillus kribbensis, polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
摘要:
Disclosed are compositions and methods relating to an alpha-amylase from Streptomyces xiamenensis . The compositions and methods are useful, for example, for starch liquefaction and saccharification, for cleaning starchy stains in laundry, dishwashing, and other applications, for textile processing (e.g., desizing), in animal feed for improving digestibility, and for baking and brewing.
摘要:
A fungal alpha-amylase is provided from Aspergillus terreus (AtAmy1). AtAmy1 has an optimal pH of 4.5 and is operable at 30 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and an isoamylase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AtAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha amylase from Aspergillus kawachii . This facilitates the utilization of the ligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
摘要:
A fungal alpha-amylase is provided from Aspergillus fumigatus (AfAmy1). AfAmy1 has an optimal pH of 3.5 and is operable at 30 - 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and a pullulanase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AfAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii . This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.