VINALASE DHT-100
Heat-stabilized bacterial amylase for starch decomposition
PROPERTIES
Chemical character
Appearance
pH-value of a
10 % solution
Specific weight
at 20 oC
Stabilities
Bacterial amylase
Brown liquid
6 ± 1
1.07 – 1.09
VINALASE DHT-100 is impaired a lot by heavy metal ions and salt thereof, oxidizing agents, alkalis (> pH 9.0) and acids (<pH 4.0). A number of tensides, especially the ones with anionic reaction may impair the enzymatic decomposition.
The product is to a limited extent sensitive to frost
changes occurring at low temperatures are reversible on warming and after thorough stirring..
DILUTION
VINALASE DHT-100 can be diluted with water in every ratio.
APPLICATION
VINALASE DHT-100 is an enzymatic product which decomposes starch at temperatures
normally used for desizing process (50 – 110 Cº ) and a pH range between 5.0 – 7.0.
Due to heat stability of VINALASE DHT-100 the product can be used on Pad-Steam
process with 1-20 min. steaming time.
Heavy metal ions impair the enzymatic decomposition of the amylases very much.
Therefore it is of advantage to add to the desizing liquor a sequestering agent, e.g.
VINAQUEST CEP / VINAQUEST SF 40 with a high heavy metal sequestering capacity
.
VINALASE DHT 100 can be applied in all common desizing methods, pad-batch methods,
processes in long liquors and continuous processes.
RECIPE PROPOSAL
ENZYMATIC DESIZING:
Long Liquors (e.g. winch beck, jigger)
0.5 – 2.0 g/l VINALASE DHT-100
1.0 – 2.0 g/l VINAPOL NSD / VINAPOL GR
0.5 – 1.0 g/l VINAQUEST CEP
or
1 – 3 g/l VINAQUEST SF 40
Treatment temperature: 70- 95 °C
Treatment time: 10 – 30 min.
Wash out : hot and cold