Pengaruh Kandungan Air Pelarut dan Solid Loading terhadap Perolehan Ekstrak Kurkumin dari Kunyit (Curcuma longa L.) pada Proses Sekuensial Microwave-Ultrasound-Assisted Extraction = Effect of Solvent Water Content and Solid Loading on the Extraction of Curcumin from Turmeric (Curcuma longa L.) in Sequential Microwave-Ultrasound-Assisted Extraction Process