Method for producing modified starch

Method for producing modified starch

  • CN 101,724,083 B
  • Filed: 01/15/2010
  • Issued: 05/08/2013
  • Est. Priority Date: 01/15/2010
  • Status: Active Grant
First Claim
Patent Images

1. a method of producing modified starch, comprise the steps:

  • (1) tapioca (flour) is mixed with water, obtain starch slurry;

    In described starch slurry, the quality percentage composition of starch is 30-50%;

    (2) add acetic anhydride in the starch slurry that step (1) obtains, 20-35 ℃

    , pH8.0-10.0 reaction 30-120 minute;

    Wherein, the add-on of acetic anhydride is the 3-15% of starch quality in described starch slurry;

    (3) add sodium-chlor in the reaction product of step (2), 25-35 ℃

    , pH6.5-12.5 reaction 10-60 minute;

    Wherein, the add-on of sodium-chlor is the 5-30% of starch quality in described starch slurry;

    (4) add 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride in the reaction product of step (3), 35-50 ℃

    , pH8.0-10.0 reaction 60-300 minute;

    Wherein, the add-on of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride is the 5-10% of starch quality in described starch slurry;

    (5) reaction product of step (4) is carried out aftertreatment, obtain modified starch.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×