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Vol. 79, Issue 5, May 2007, pp. 1202-1216




A Novel Noninvasive Sensing Approach of Assessment of Pelt Quality


S. C. Mukhopadhyay1, S. Deb Choudhury1,Vijayant Suri1, T. Allsop2

and G. E. Norris1

1Massey University, Palmerston North, New Zealand

2New Zealand Leather and Shoe Research Association

E-mail: S.C.Mukhopadhyay@massey.ac.nz



Received: 3 January 2007   /Accepted: 11 May 2007   /Published: 31 May 2007


Abstract: The separation of the upper dermal of the skin (the papillary layer or grain) from the lower dermis (corium) is regarded as a defect in leather making. It is difficult to detect pelts at an early processing stage and it only becomes really apparent once the skin is made into leather. There would be great advantages in detecting the problem at the pickled pelt stage (skins treated with sodium sulphide and lime, bated with enzymes, and then preserved in NaCl and sulphuric acid) so that adjustments to the processing could be made to mitigate the effect. A novel bio-sensor for inspection of leather in a non-invasive way has been fabricated and developed. The sensor has the planar Interdigital structure and the consecutive fingers are connected to positive and negative electrodes respectively. The experimental results show that the sensor has a great potential to estimate the leather quality in a non-invasive and non-destructive way.


Keywords: Pelt quality, Biosensor, Interdigital sensor


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