THE STUDY OF CHEMICAL AND TECHNOLOGICAL PROPERTIES OF THE ETHANOL EXTRACT OF PINE OBTAINED FROM DEBARKING AND ITS POSSIBLE APPLICATION IN THE LEATHER AND FUR INDUSTRY

Article Russian OPEN
Гончарова, Наталья Викторовна ; Сячинова, Наталья Владимировна ; Думнова, Екатерина Александровна (2014)
  • Publisher: Altai State University
  • Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material) (issn: 1029-5143, eissn: 1029-5151)
  • Related identifiers: doi: 10.14258/jcprm.1402243
  • Subject: The products of dissolution of collagen (PDC), differential scanning calorimetry, extract of pine | продукт растворенного коллагена (ПРК), дифференциально-сканирующая калориметрия, экстракт сосны

This paper investigated the effect of ethanol on the quality of the extract of pine produced from low-grade raw materials and their processing properties. We studied the relationship between views of the extractant and the degree of modification of collagen - the main skins' protein by simulating the process of tanning. The products of dissolution of collagen (PDC) treated with ethyl extract of pine were used as the model. The degree of modification was determined by differential scanning calorimetry. The investigations revealed that the alcohol extract of pine features a large tar content and a high degree of purity (~92,6%). Interaction between extractives and collagen goes mainly on amide nitrogen and the side carboxyl groups, with ε-amino groups and phenolic hydroxyl groups - that have probably been blocked by hydrogen bondsare – are being released. Heat resistance of coats derived from the tanned PDC is high enough, it can be concluded that there may be the possible use of alcohol extracts of pine in the leather and fur industry as a tanning agent.
Share - Bookmark