Nasser, N. E. ., Al-abdli, Y. A. J., & Al-Jumaily, E. F. A. . (2011). Extraction of Catechin from green tea plants Camellia sinensis. Journal of Biotechnology Research Center (JOBRC), 5(3), 9–14. https://doi.org/10.24126/jobrc.2011.5.3.173