Optimization of the process condition for the extraction of bioactive compounds from indigenous kembayau (Dacryodes rostrata) fruits TEELEE HONG 2017 In recent years, increasing demand leads to the need in searching new source of natural antioxidant. Kembayau (Dacryodes rostrata), an indigenous fruit found in Malaysia, is reported to possess significant nutritional content and rich in antioxidants. Present study aimed to explore and develop a systematic approach to retrieve its valuable natural antioxidant for valorisation purpose. In particular, this study focused on the characterisation of oil, selection of the preferred part of fruit with highest antioxidant content for the assessment of optimization of different method of extractions, followed by partial purification to reduce the impurities from the crude extract.