Renewable fillers for leather

Whey Protein Isolate as potential filler for Blue Stock Eduard Hern àndez Balada ERRC Research Liaison Committee April 29 th , 2008

Main Goal To assess the feasibility of using Whey Protein Isolate , an abundant, inexpensive and readily available by-product of the cheese industry and gelatin , a byproduct of the meat industry rich in collagen, as alternatives to petroleum-based fillers. From US Dairy Export Council web site From GEA filtration web site Flow Diagrams of Whey Protein Isolate and Gelatin Production

Introduction Introduction – Experimental – Results – Conclusions – Future work Why using WPI with a dash of gelatin?… Biopolymer composition : 10% (w/w) WPI, 2 U mTGase/g protein (Test), 1% (w/w) DTT T C T C T C 3 % 1.5 % 0 % C: Control (no mTGase) T: Test ( 2 U mTGase/g protein) Amount of gelatin

Introduction Introduction – Experimental – Results – Conclusions – Future work ,[object Object],[object Object],[object Object],[object Object],[object Object],Questions…

Experimental Introduction – Experimental – Results – Conclusions – Future work ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Note : Weights calculated with respect to the weight of B.S.

Experimental Introduction – Experimental – Results – Conclusions – Future work Blue Stock Neutralization with 4 % (w/w) NaHCO 3 Addition of mTGase solution (various concentrations) Addition of WPI + gelatin solution (various concentrations) 200% Float – 16 rpm Weights calculated with respect to the weight of B.S. Retan-Color-Fatliquor Drain Tumble 1h @ RT Drain 1 h @ RT 5 h @ 45 °C Drain Wash x 2

Results- Upholstery Introduction – Experimental – Results – Conclusions – Future work Effect of mTGase pretreatment on protein uptake ,[object Object],[object Object],[object Object]

Results - Upholstery Introduction – Experimental – Results – Conclusions – Future work Effect of mTGase pretreatment on protein uptake ,[object Object],[object Object],[object Object],X ~4

Introduction – Experimental – Results – Conclusions – Future work Results – Upholstery Control -> untreated Test 1 -> 2.5% (w/w) WPI + 0.25% (w/w) gelatin Test 2 -> 2.5% (w/w) mTGase, followed by 2.5% (w/w) WPI + 0.25% (w/w) gelatin

Results – Upholstery Introduction – Experimental – Results – Conclusions – Future work ,[object Object],[object Object],[object Object],Effect on Spring Break

Results – Upholstery Introduction – Experimental – Results – Conclusions – Future work Effect on Color

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Effect of mTGase concentration on protein uptake ,[object Object],[object Object],[object Object],[object Object]

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Effect of mTGase concentration on protein uptake ,[object Object],[object Object],[object Object],X ~1.5 X ~1.3 X ~2

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Belly - Control Belly - Test ,[object Object],Coarse break Tight break

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Effect on Color

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Belly Butt Neck Cont. Test

Results – Shoe Upper Introduction – Experimental – Results – Conclusions – Future work Butt Area Control Test

Background – Experimental – Results – Conclusions – Future work Results – Shoe Upper Belly Area Control Test

Introduction – Experimental – Results – Conclusions – Future work Results – Shoe Upper Neck Area Control Test

Conclusions Introduction – Experimental – Results – Conclusions – Future work ,[object Object],[object Object],[object Object],[object Object],[object Object]

Conclusions Introduction – Experimental – Results – Conclusions – Future work ,[object Object],[object Object],[object Object]

Acknowledgments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],THANK YOU !!

Renewable fillers for leather

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Renewable fillers for leather