by Petulance » Fri Feb 07, 2014 10:41 am
These are the stats of the two enzymes I've been looking at. See if they make any sense to you ('cos I'm a bit foggy all the time)
SEBstar HTL®
Heat-Stable Liquid Bacterial Alpha-Amylase
Description:
SEBstar HTL is a heat-stable, liquid alpha-amylase enzyme. It is produced by controlled fermentation of a non-GMO strain of Bacillus licheniformis. This enzyme is food-grade, Kosher Certified and can be used to produce certified-organic beverages. SEBstar HTL is an endo-amylase that randomly hydrolyzes alpha-1,4-glycosidic bonds in gelatinized starch. The prolonged action of SEBstar HTL rapidly reduces the viscosity of gelatinized starch and produces large amounts of lower molecular weight dextrins.
Application:
SEBstar HTL is used in the starch industry to continuously liquefy and dextrinize gelatinized, wet-milled corn and wheat starch for the production of low-dextrose (DE 7 – 15) starch syrups. Because of its heat stability, broad pH tolerance and low calcium requirement, SEBstar HTL can be used to liquefy starch slurries at temperatures as high as 90oC without the addition of calcium. In the alcohol industry it is used for high-temperature liquefaction of starch containing grain mashes (corn, wheat, barley, sorghum, rice etc.) for production neutral spirits. In the brewing industry, SEBstar HTL is used to rapidly liquefy and reduce the viscosity of grain adjuncts.
Benefits:
Excellent thermal stability for liquefaction of steam jet-cooked starch.
Produces low-viscosity, liquid dextrose syrups in 90 minutes at 80 – 90oC.
Whole corn or grain liquefaction at pH 5.8 and 80 - 85oC
Increases wort yield and grain adjunct cooking capacity
Produced by fermentation of non-GMO, organism. All natural, non-synthetic ingredients
Enzyme Properties:
SEBstar HTL is a brown liquid. The enzyme has a slight odor typical of fermented products. It is completely soluble in water. When used to liquefy cereal grain starch, the optimum pH pH 5.6 – 6.5. SEBstar HTL has a temperature range of 50 – 90oC. For liquefaction hold times longer than 30 minutes, the optimum temperature is 80 – 85oC. Temperature inactivation begins to occur at or above 95oC and pH 6.5. SEBstar HTL can be completely inactivated in 5 minutes at pH 4.0 and 95oC. The activity of SEBstar HTL is stabilized by the presence of Ca++ ions and is inhibited by high concentrations of heavy metals.
Dosage:
The optimum dosage of SEBstar HTL depends on:
nature and dry solids (DS)% of the substrate to be liquefied
final starch-syrup dextrose equivalent (DE, %) required
liquefaction temperature and pH
liquefaction time (typically 30 – 120 minutes)
recommended dose: 200 – 800g/metric ton starch DS or whole grain.
Packaging:
SEBstar HTL is available in 25kg Jerry Cans, 225 kg Drums and 1,100 kg tote-bins.
SEBamyl® GL
Liquid GlucoAmylase
Description:
SEBamyl-GL is an enzyme produced by controlled fermentation of a non-GMO strain of
Aspergillus niger. This enzyme is food-grade, Kosher, non-synthetic and can be used to produce
certified-organic beverages. SEBamyl-GL is considered an exo-alpha-amylase, glucoamylase or amyloglucosidase enzyme. It acts to hydrolyze the alpha-D-1,4-glycosidic bonds on the non-reducing end of liquefied starch. In addition, SEBamy-GL has side alpha-D-1,6 glycosidic activity to increase hydrolysis of starch and amylopectin branch points. The prolonged action of SEBamyl-GL produces large amounts of glucose.
Application:
SEBamyl GL is used in the starch industry to produce glucose from liquefied starch. It is used in the distillery and fuel-alcohol industries for saccharification, and for simultaneous saccharification and fermentation of whole-grain mashes. In the brewing industry it is used to reduce residual grain-starch dextrins in the production of low-carbohydrate beer.
Benefits:
Excellent temperature range of 30 – 65oC
pH range of 2.8 – 5.5
Produces high-DE, glucose syrups in less than 48 hours
Whole-corn or grain starch saccharification
Produced by fermentation of non-GMO, organism
All-natural, non-synthetic ingredients
Enzyme Properties:
SEBamyl GL is a brownish liquid. The enzyme has a slight odor typical of fermented products. It is completely soluble in water. When used to saccharify starch, the optimum pH range is pH 2.8 - 5.5. pH inactivation occurs at a pH below pH 2.5 or above pH 5.5 SEBamyl GL is stable over a temperature range of 30 – 65oC. For saccharifications longer than 24 hours, the optimum temperature range is 55 – 60oC. Temperature inactivation occurs at or above 75oC. Complete inactivation can be achieved by heating to 95oC for approximately 10 minutes at pH 4.5 or to 75oC for 40 minutes.
Dosage:
The optimum dosage of SEBamyl GL depends on:
Nature of the substrate to be saccharified
Dry substance (DS) percent of the starch substrate
Final syrup DE, % glucose required
Saccharification temperature and pH
Saccharification time (typically 24 – 96 hours)
Recommended dose: 400 – 800 mL/metric ton starch DS (2,200 lbs.)
Packaging:
SEBamyl GL is available in 25-kg jerry cans, 225-kg drums, 1,100-kg tote-bins, and in bulk.