The X-Zyme process can be controlled very accurately and reproducibly by means of parameters such as the temperature and the pH of the float
Lanxess, specialty chemicals company, launched an innovative X-Zyme process, a groundbreaking technology for the beamhouse stage of the leather production process.
The new, enzyme-based technology was developed in collaboration with Danish biotechnology specialists Novozymes A/S, Bagsværd, who also manufacture the two pure enzymes by means of bacterial fermentation.
According to Lanxess, Peltec X-Zyme S, which is used in the soak, is a glucosidase – i.e. a carbohydrate-splitting enzyme – with customized properties which include rapid opening-up and accelerated rehydration of the hide. This means that excellent soaking results can be obtained after just four to six hours. And as the enzyme has no proteolytic activity, the soaking process can be extended – e.g. overnight – without damaging the collagen.
In the liming process, Peltec X-Zyme U, a specific protease with high selectivity for pre-keratin, is applied to remove the hair and the epidermis. This product primarily targets the basal membrane of the epidermis, thereby loosening the hair roots and preparing the subsequent unhairing. There is no need for reductive chemicals that are required in conventional hair-saving processes and yet Peltec X-Zyme U tackles the residual hair root problem. Further advantages of the new process are a lower effluent load and reduced need for chemicals.
The X-Zyme process is fully in line with Lanxess’ Sustainable Leather Management initiative. It offers a potentially higher area yield and improved quality of the pelts. Furthermore, compared with conventional processes, it reduces the need for wetting agents (surfactants) and liming chemicals such as lime, sulfur compounds and amines. This is resulting in more favorable wastewater values like sludge, COD, sulfide and nitrogen. In addition the rapid opening-up of the hide in the soak and the reduced amount of alkali ensure high-quality pelts.
The X-Zyme process was developed specially for the Peltec product line, which in turn is geared specifically to the requirements of the beamhouse. The range includes leather chemicals for all four process stages – soaking, liming, deliming and bating.
The X-Zyme process is a groundbreaking technology for the beamhouse stage of the leather production process