Joseph Pesek Department of Chemistry, San Jose State University, USA, USA,
1 protocol

Rafea Naffa
  • Rafea Naffa
Research focus
  • Biochemistry
  • 1 Author merit


PhD, Massey University, New Zealand, 2017

Current position

Dr, Research, New Zealand Leather & Shoe Research Association Inc., New Zealand


  1. Rafea Naffa, Seiichiro Watanabe, Wenkai Zhang, Catherine Maidment, Preet Singh, Paul Chamber, Maria T Matyska, Joseph J Pesek. “Rapid Analysis of Pyridinoline and Deoxypyridinoline in Biological Samples by Liquid Chromatography-Mass Spectrometry and Silica Hydride Column.”, Journal of Separation Science, 2019, 
  2. Rafea Naffa, Patrick JB Edwards, Gillian Norris. “Isolation and characterization of collagen type I crosslink from skin: high resolution NMR reveals diastereomers of hydroxylysinonorleucine crosslink”, Amino acids, 51, 2019, 705-715. 
  3. Rafea Naffa, Catherine Maidment, Meekyung Ahn, Bridget Ingham, Simon Hinkley, Gillian Norris. “Molecular and structural insights into skin collagen reveals several factors that influence its architecture”, Journal of Biological Macromolecules, 128, 2019, 509-520. 
  4. Rafea Naffa, Catherine Maidment, Geoff Holmes, Gillian Norris. “Insights in the compositions of the skins and hides used in leather manufacture”. Journal of American Leather Chemists Association, 114(1), 2019, 29-37. 
  5. Yi Zhang, Bradley William Mansel, Rafea Naffa, Soshan Cheong, Yin Yao, Geoff Holmes, Hsin-Lung Chen, Sujay Prabakar. “Revealing molecular level indicators of collagen stability: minimizing chrome usage in leather processing”. ACS Sustainable Chemistry & Engineering, 6(5), 2018, 7096-7104. 
  6. Yi Zhang, Bridget Ingham, Soshan Cheong, Nicholas Ariotti, Richard D Tilley, Rafea Naffa, Geoff Holmes, David J Clarke, Sujay Prabakar. “Real-time synchrotron SAXS studies of collagen structure during leather processing”, Industrial & Engineering Chemistry Research, 57 (1), 2017, 63-69.
1 Protocol published
Authors:  Rafea Naffa and Joseph Pesek, date: 05/05/2019, view: 2883, Q&A: 0
In this protocol we describe the separation of collagen crosslinks in biological tissues and samples including skin, tendon, cartilage, bone and urine. The existing methods use either cation exchange chromatography followed by post-column ...
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