Wahab, S., Gunasekaran, B., Shaharuddin, N.A., Johari, W., Halmi, M., Said, N., Shukor, M. and Masdor, N. 2013. A novel method for the determination of mercury in herbal preparation using an inhibitive assay based on the protease papain. Journal of Environmental Microbiology and Toxicology. 1, 1 (Dec. 2013), 1–4. DOI:https://doi.org/10.54987/jemat.v1i1.16.