Recovery of starch from sago pith waste and waste water treatment

Abstract

The objective of this study was to investigate sago starch recovery from sago pith waste (SPW) using wet milling and its physical properties. For comparative purposes, the same parameters were evaluated for untreated sago starch. As a result of the super mass colloider mill (SMCM), a 21% dry basis of sago starch can be recovered from SPW. Scanning electron microscopy showed that the granule morphology was not changed. X-ray diffraction showed that relative crystallinity and diffractogram patterns between SMCM sago starch and untreated sago starch were similar. Particle size distribution analysis demonstrated that untreated and SMCM sago starch were relatively narrow and uniform size distribution and the particle size distribution index were not different. The results indicate that wet milling of SPW using a SMCM can increase sago starch yield and the physical properties of SMCM sago starch were similar to untreated sago starch.