Protein reduction of natural rubber films through leaching solvent Lih Jiun Yu, Christopher Wong Yoke Chi, Vishantini Tangavaloo, Keuw Wei Lim and Mou’ad A Tarawneh MATEC Web Conf., 268 (2019) 01011 Published online: 20 February 2019 DOI: 10.1051/matecconf/201926801011