Water Contamination Emergencies: Managing the Threats
Optimization of Ultrasound-Assisted Extraction of Konjac Flour From Amorphophallus Muelleri Blume
Published:01 Jul 2013
Simon Bambang Widjanarko, Anni Faridah, Aji Sutrisno, 2013. "Optimization of Ultrasound-Assisted Extraction of Konjac Flour From Amorphophallus Muelleri Blume", Water Contamination Emergencies: Managing the Threats, Ulrich Borchers, John Gray, K Clive Thompson, K Clive Thompson, Ulrich Borchers, John Gray
Download citation file:
This paper reports the optimization of the ultrasound-assisted extraction of commercial konjac flour (KGM), using response surface methodology (RSM) from Amorphophallus muelleri Blume. Amorphophallus muelleri Blume is one of the most abundant Amorphophallus species in the Indonesia forest, and is specifically cultivated for chips production. Konjac flour from Amorphophallus konjac K. Koch – one family of Amorphophallus muelleri. – is a vital source of glucomannan, a polysaccharide used in the food, cosmetics and pharmaceutical industries. The consistent palatibility problems, due to 2.1% calcium oxalate, hindered the use of crude konjac flour (CKF) for food consumption. Previous experiments (dipping CKF in ethanol solutions) resulted in a lower calcium oxalate, higher glucomannan content and viscosity compared to untreated flour (CKF); however, the degree of whiteness of PKF remained nearly the same to CKF. The application of ultrasound seems to be very promising to obtain a high yield and activity, and it has been reported to improve the extraction of bioactives from roots and tubers, apple pomace, oil seed tobacco, and citrus peel. RSM – a collection of statistical techniques – was employed to optimize purification process conditions which could bring improvement to the existing product design.