The yield percentage of Avicennia marina extracts at different maceration time and organ is presented in Table 1. The highest yield of Avicennia marina was obtained from the leaves extracted for 72 hours while the lowest yield was found in the stem extracted for 24 hours. From the data obtained, it is evident that the leaves extracts experienced a dramatic increase in yield percentage as the extraction time gets longer while the yield of stem extracts slightly increased over time. In addition, leaves extracts have higher yield compared to the stems from all three different maceration time. This could be explained by the similarity of the compounds and the used solvent in the terms of polarity properties. Leaves as an initial place to produce and accumulate a wide range of compounds before they are transported to other parts of the plant could also affects the high percentage of yield produce in leaves.