A STUDY OF TECHNOLOGICAL PROCESS FOR PILOT SCALE GLUCOMANNAN PRODUCTION LINE USING AMORPHOPHALLUS KRAUSEI RIZHOMES CULTIVATED IN AN GIANG PROVINCE

Abstract

This paper focuses on the development and optimazation of the technological process to produce purified GM powder on small scale production line using An Giang cultivated Amorphophallus Krausei rizhomes (200 kg per batch). The study includes improvement for technical parameters, solvents selection, production temperature conditions, quality assessment of refined glucomannan powder according to the preliminary standards approved in previous publication. The results showed that high yield and optimal product quality were achived when using an antibrowning agent of 0.2% NaHSO₃; wet grinding technology in ethanol: water ( 1.5:1) solvent; ratio of solvents/ raw materials 2:1, grinding time is 20 minutes; followed by filteration by membrane filter (pore size <0.15 mm); GM powder is separated by horizontal centrifugation at 500 rpm and then dried in a refrigerating equipment at 10°C for up to 10 hours.