Jutharat Pongnoree and Teeraporn Kongbangkerd

pp. 191 - 199

Abstract

The extraction of fat from corncob powder was determined using hexane and 95% ethanol solution for 4, 8 and 12 hrs. The selected powder was subjected to protein separation using 10, 15 and 20% NaOH for 15, 30 and 45 min. The obtained product was then bleached using 10, 15 and 20% H₂O₂ for 1.5, 3.0 and 4.5 hrs. It was found that the suitable condition for fat extraction was using 95% ethanol for 8 hrs. The optimal condition for protein extraction was using 15% NaOH for 30 min. and the bleaching condition was using 10% H₂O₂ for 1.5 hrs. The obtained product contained 76.90% cellulose (dry basis) and the chemical composition and physical properties were also determined.

Keywords

• preparation
• corncob
• cellulose
• extraction