During charcoal manufacture, mangrove bark is removed fromtimbers to reduce the ash content of the charcoal product and it isregarded as solid waste (Tan and Jain, 2012). However, it is reportedthat these mangrove barks are rich in tannin (ranging from 15 to36%) and can produce reddish brown dyes (. The major coloring components of tannin foundin mangrove barks are condensed types, which are composed offour flavanoid monomers namely catechin, epicatechin, epigallo-catechin and epicatechin gallate as illustrated in Fig. 1 (Rahim et al.,2007).