Turmeric is one of the prominently use herbal plants due to its diverse beneficial effects especially in Indian medicine. The rhizome part of the turmeric contains valuable compounds which have been said to owe its antimicrobial effects, anti-cancer, anti-inflammatory and enhance wound healing. Due to its short-life span and perishable properties, the conversion of the rhizome into turmeric extract is desirable. Several methods have been used for extraction such as Soxhlet extraction and pressurized liquid extraction (PLE). However, these techniques are tedious, laborious, time consuming and involves the usage of toxic organic solvent, of which safeness of the end product is doubtful. In this study, a rapid, reliable and green extraction method of supercritical fluid extraction (SFE) and ultrasonic assisted extraction (UAE) were used. SFE without modifier has resulted in 0.0006 mg/100 g of curcuminoids concentration and 5.62 % of yield (dry weight basis). UAE using ethanol was able to produce significantly the highest yield (6.40 %, dry weight basis) and the highest curcuminoids concentration (0.1020 mg/100 g). However, SFE was able to produce extract that contain significantly higher major volatile compounds; tumerone, ar-turmerone and curlone. Therefore, this study proves that both extraction methods were able to produce high quality turmeric extract.Keywords: Supercritical fluid extraction, Ultrasonic assisted extraction, percentage yield, curcuminoids, volatile compounds Abstrak Kunyit merupakan tumbuhan herba yang terkenal disebabkan kebaikannya yang pelbagai terutamanya dalam perubatan masyarakat India. Bahagian rizom kunyit mengandungi sebatian berkhasiat yang dipercayai mempunyai kesan antimikrobial, anti-kanser, anti-keradangan dan juga mempercepatkan kadar penyembuhan luka. Disebabkan kitar hidup yang singkat dan ciri mudah rosak yang terdapat pada kunyit, maka penukaran rizom kunyit kepada ekstrak kunyit adalah amat wajar. Beberapa kaedah pengekstrakan telah digunakan seperti pengekstrakan Soxhlet dan pengekstrakan cecair bertekanan (PLE). Bagaimanapun, kaedah-kaedah tersebut amat rumit, sukar, mengambil masa yang lama serta melibatkan penggunaan pelarut organik bertoksik yang menyebabkan keraguan terhadap tahap keselamatan produk iaitu ekstrak kunyit. Di dalam kajian ini, kaedah pengekstrakan yang pantas, dipercayai serta mesra alam iaitu pengekstrakan cecair supergenting (SFE) dan pengekstrakan ultrasonik berbantu (UAE) telah digunakan. SFE tanpa bahan pengubahsuai telah menghasilkan 0.0006 mg/100 g kepekatan kurkuminoids dan 5.62 % hasil ekstrak kunyit (berdasarkan berat kering). UAE menggunakan etanol telah menghasilkan hasil ekstrak yang ketara tinggi (6.40 %, berdasarkan berat kering) dan nilai kepekatan kurkuminoids tertinggi iaitu 0.1020 mg/100 g. Walaubagaimanapun, SFE telah menghasilkan ekstrak yang mengandungi sebatian meruap yang

Fast, selective and reliable extraction technique namely Supercritical Carbon Dioxide Extraction (SC-CO2) has been proposed in this study. Experiments were carried out to determine the optimum conditions for pressure and temperature of SC-CO2 extraction for Curcuma longa L. using response surface methodology (RSM) based on central composite design (CCD) with the aim to obtain the highest percentage of yield and curcuminoid concentration. At a pressure of 4807 psi and temperature of 90°C, extraction of turmeric rhizome using SC-CO2 extraction resulted in oil yield of 7.54% (dry weight basis) and curcuminoid concentration of 0.023 mg 100-1g of dry turmeric rhizome. From the study, it can be concluded that the percentage yield and curcuminoid concentration was significantly influenced by pressure and temperature.