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Paper Information

Journal:   JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH   FALL 2006 , Volume 7 , Number 28; Page(s) 119 To 132.
 
Paper: 

CLARIFICATION AND DECOLORIZATION OF GLUCOSE SYRUP BY POLYSULPHONIC ULTRAFILTRATION

 
 
Author(s):  SADEGHI RAMIN, EMAM JOMEH ZAHRA, SOTOUDEH GHARAHBAGH RAHMAT, MOUSAVI S.M., VOSOUGHI MANOUCHEHR
 
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Abstract: 

The refinement of starch hydrolysate is an important stage in glucose syrup production. This paper aimed to study the effect of operational parameters on the permeate flux and the properties of clarified syrup. Glucose syrup (DE = 41) obtained from corn starch using acid conversion method. A polysulphonic Membrane with 30kDa molecule weight cut-off (MWCO), spiral module and 0.75m2 surface area was used. The optimum transmembrane pressure for syrup with the concentration about 40 Brix and 10 or 12LPM velocity was respectively 724 and 793kPa. Decreasing the concentration of syrup led to an increase in optimum transmembrane pressure. The tangential velocity had a linear effect on the increase of permeate flux. Clarified syrup has the good quality aspects such as turbidity (less than 0.2 NTU). Ultrafiltration can reduce the color of hydrolysates. Results show that decolorization effect of membrane increases with the increase of transmembrane pressure. Also ultrafiltration can reduce the protein content of syrup about 79.4% but it has no effect on the sulphated ash content.

 
Keyword(s): CLARIFICATION, DECOLORIZATION, GLUCOSE SYRUP, PURIFICATION, ULTRAFILTRATION
 
References: 
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