Hidden treasure of the nature: PAs. The effects of grape seeds on free formaldehyde of leather
Articles > Article · 2012
Authors: Elif Eser BAYRAMOĞLU
Industrial Crops and Products, Journal Indexed in SCI Expanded, International, WoS, 2012, vol 41, pp 53-56
DOI: 10.1016/j.indcrop.2012.03.040
Summary
Grape seeds are increasingly on demand as a side product of wine industry. Having oligomeric proanthocyanides (PAs) in their structure, grape seeds can be used as antioxidising agents in a wide area of applications. In the present study, a variety of grape seeds (powder, grape seed extract and modified extract) have been tested for their effects on free formaldehyde readily found on leather. Formaldehyde was quantified with two methods; AATCC test method 112 was employed to measure free formaldehyde and that of hydrolysed form obtained at 49 degrees C for 20 h. By IUC 19 (ISO IS 17226) method, free formaldehyde and a little formaldehyde from the hydrolysis was obtained at 40 degrees C for 1 h. The results indicated that the grape seeds in all forms used at the step of retanning process lowered free formaldehyde at appreciable levels. (C) 2012 Elsevier B.V. All rights reserved.