Proviera Biochemicals vs. Enzymes
Application, differences, and synergies
Enzymes are types of metabolites that have been extensively used in the leather-making process since the beginning of the XXth century, when Dr. Otto Rohm first tapped into this technology and began using pancreatic extracts in the bating operation. Over the years, knowledge of enzymes has been further developed. As such, chemical suppliers of the leather industry are now able to offer several enzymes with specific features that can be used in several stages, other than bating. Enzymes can now also be applied in the soaking, unhairing, and degreasing processes.
Enzymes are obtained through the biotechnological processes of microbial fermentation. These enzymes have complex molecules that are harnessed because of their specific catalytic properties. They do not chemically combine with the collagen structure of hides and skins or other chemicals, but accelerate degradation of protein and fats that become soluble. They are also easily removed when draining the floats.
Proviera biochemicals are metabolites derived from a fermentation process of natural selected raw materials and probiotics. The organic molecules from these raw materials break down, maintaining their functional groups. These groups are responsible for conferring specific properties that are useful during leather processing. Such properties, namely hydrating, solubilizing, dispersing, and degreasing, can replace chemical or biological auxiliaries like surfactants and enzymes. Alternatively, such properties can synergistically improve the performance of traditional auxiliaries. This application has a positive impact on effluent pollution. Furthermore, the probiotic nature of Proviera’s biochemicals eliminates the need for biocides in pre-soaking and soaking processes.
The soakingprocess aims to rehydrate hides and skins and to clean off dirt, manure, blood, unstructured proteins, and other non-leather-making substances that are not suitable to be converted into leather. The products used in the soaking process have to open up the febrile structure of collagen and allow the penetration of the tanning products that stabilize the protein from biological decomposition. An effective soaking process will also facilitate a more efficient uptake of the other leather chemicals that confer properties to the final leather articles, making them a valuable final material.
Hides and skins contain an adipose tissue composed of insoluble fats. The degreasing process aims to remove greasy substances from hides and skins that have to be eliminated or dispersed uniformly throughout the leather. It consists of three different phases. The first step cleaves off fats from the hide and skin structure. The second stage disperses the fat in the water float, and the third step solubilizes fats by emulsification or hydrolysis. Enzymes break down fats, converting fats into soluble fatty acids.
Application Properties: Main Differences.
Application Properties: Potential Synergies.