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Acetylated starch adipate glycerides and acetylated two starch Preparation and Properties of

Author: HouChengJie
Tutor: DongHaiZhou
School: Shandong Agricultural University
Course: Agricultural Products Processing and Storage
Keywords: Acetylated starch adipate Acetylated glycerides two starch Crafts Nature
CLC: TS231
Type: Master's thesis
Year: 2008
Downloads: 147
Quote: 1
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Abstract


In this study, waxy corn starch as raw material for the preparation of acetylated starch adipate, acetylated glycerides two starch processing conditions and acetylated starch adipate, acetylated glycerides two main properties of starch were studied systematically . The main results are as follows: 1, acetylated distarch adipate Preparation of the single factor test, research over anhydrous sodium sulfate, reaction temperature, reaction time, pH, mixed acid anhydride with starch mass ratio of adipic acetylated preparation acid bis starch affected. According to the results of single factor test, to determine the reaction temperature, reaction time, pH, mixed acid anhydride with starch mass ratio of experimental factors, product cold viscosity index by Box-Behnken four factors and three levels of testing to determine the preparation of acetylated adipic acid bis starch optimum parameters: pH value of 9.02, the reaction temperature was 51.9 ℃, mixed acid anhydride with starch mass ratio of 9.69%, and the reaction time was 2.4hr. 2, acetylated glycerides Preparation of two starch by crosslinking and acetylation reaction sequence studies identified two acetylated starch ester preparation process route; through single factor test, study the reaction temperature, pH value, epoxy chloropropane mass ratio of the starch, the starch mass ratio of acetic anhydride, the crosslinking reaction time, the reaction time on the preparation of acetylated distarch acetylated glycerides of. According to the results of a single factor test, to determine the reaction temperature, pH value, epichlorohydrin and the starch mass ratio, the mass ratio of acetic anhydride with starch, the crosslinking reaction time, the acetylation reaction time as the test factor to the product cold viscosity as an indicator by Box-Behnken six factors and three levels of testing to determine the two starch acetylated glycerides prepared by the best process parameters: pH value of 9.91, the reaction temperature is 43.2 ℃, epichlorohydrin and starch mass ratio of 0.26% the starch mass ratio of acetic anhydride and 7.94%, the crosslinking reaction time is 4.9hr, acetylation reaction time was 1.4hr. 3, acetylated starch adipate glycerides and acetylated two properties of starch by waxy corn starch, acetylated starch adipate, acetylated glycerides two starches, two starches glycerides and acetylated starch transmittance, freeze-thaw stability and paste solution stability analysis and comparison, the following conclusions: waxy corn starch of high transmittance, acetylated di glycerides and acetylated starch starch adipate transmittance compared with waxy maize starch decreased, but more variability two single crosslinked starch esters have improved significantly. Waxy corn starch freeze-thaw stability is poor, acetylated starch adipate glycerides and acetylated starch two freeze-thaw stability than waxy corn starch has improved significantly. Waxy corn starch fluid shear stability and acid, alkali stability are poor, acetylated starch adipate shear stability and acid stability, alkali stability is poor, acetylated starch glycerides two shear stability and acid, alkali stability are good.

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CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Starch Industry > Basic theory
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