Hydrocyclone procedure for starch-protein separation in laboratory wet milling
1995
Singh, N. | Eckhoff, S.R.
A hydrocyclone system for starch-protein separation was developed for use with 1-kg samples in laboratory corn wet milling. A Doxie 5 hydrocyclone with all but one cyclone plugged and a five-pass starch washing system was compared to a traditional starch tabling procedure using both regular dent and waxy corn hybrids. The tabling procedure gave 3-4% higher starch yields in dent corn and 2-3% higher starch yields in waxy corn. Tabled starch had less protein (0.33 and 0.45% for dent and waxy, respectively) than the Doxie 5 hydrocyclone-separated starch (0.64 and 0.65% for dent and waxy, respectively). Using a Doxie Type A single hydrocyclone instead of the Doxie 5 increased the starch yield; however, protein in starch increased to 1.29 and 0.97% for dent and waxy, respectively. Design and operational differences may account for the different results. The hydrocyclone procedure reduced the time required for starch-protein separation by 75%. It also eliminated the requirement of a large floor area for starch tables, reduced the potential for operator error, and more closely simulated the starch-protein separation process used in industrial operations. The reduced testing time and ease of use will make the hydrocyclone procedure useful for comparing milling procedures or different corn hybrids.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library