3. Results and discussion
3.1. Composition of kiam wood and cashew bark extracts
Total phenolic contents of EKWE and ECBE were 43970.4 and 25470.5 g tannic acid equivalent/kg, respectively. The differences might be attributed to the variation in environmental conditions, tree species, plant nutrition and stage of plant
growth (Tian et al., 2009). Both extracts were brown in color and EKWE was slightly darker than ECBE.