Biotech in bating
For as long as leather has been produced, enzymes have played an important role in the bating process.
Over the years enzyme-‐containing bating products have developed from rather unsophisticated formulations based on animal excrement via pancreatic extracts to highly elaborate biotech-‐based solutions.
As well as providing the same benefits as standard pancreatic bates, these new bating products offer the following additional benefits:
100% microbial origin; Highly standardized activity that improves final formulation quality; Granulated formulation; Safety in use.
The activity of the products is standardized and expressed in MTU/g. This activity is based on the ability to release p-nitro-anilide from Arg-pNA and is determined relative to an 0enzyme standard. One way to make a 0practical comparison of different bating products is to test them against each other in the standard bating process used. Such a test is given be-low.
The effect of our bates was tested in a series of trials performed in collaboration with Reutlingen Leather Research Institute. The enzyme was applied in a standard bating process (100% float, pH 8-8.5, 30°C for 45 minutes) com-pared to a bating process using a standard pancreatic trypsin product (PTNP) on bovine pelt for shoe upper.
Three kinds of evaluations were made: Bating effect (scud removal, float colour, thumb mark, etc.); General leather quality on crust (grain quality, colour egality, soft-ness); DIN tests (lastometer, tear strength, tensile strength and elongation at break).
Two important observations were made:
1.A similar bating effect 0was achieved with a dosage of 0~22,000 MTU/kg pelt.
This means that, under these conditions, it was possible to achieve a sufficient bating effect with Hostachem bates using minimal quantities.
2. A higher dosage may improve the bating process without damaging the quality of the final leather. In general, the following advantages are seen:
- Mild and gentle bating
- Excellent scud loosening
- Fine and delicate grain
- High-quality leather as the out-come
Our products can be used to bate any type of hide or skin. We recommend using a prolonged bating process at normal pH and temperature in order to achieve complete reaction, i.e. 60 to 90 minutes for tighter leathers and 120 minutes or longer for soft articles.
- Hostazyme NB-100
- Hostazyme 01-P
- Hostazyme BF CONC
- Hostazyme GT EXTRA
- Hostazyme 5046
- Hostazyme 600