Dissertation > Excellent graduate degree dissertation topics show

Study on Preparation of Composite Cross-linked Modified Modified Potato Starch

Author: ZhaoDan
Tutor: XuZhong
School: Harbin University of Commerce
Course: Cereals, Oils and Vegetable Protein Engineering
Keywords: potato starch crosslinked esterifying etherifying composite modified
CLC: TS236.9
Type: Master's thesis
Year: 2011
Downloads: 22
Quote: 0
Read: Download Dissertation

Abstract


Using potato starch as raw materials,epoxy propane for etherifying agent,sodium trimetaphosphate and acetic anhydride for esterification agents respectively,preparation of potato composite modified starch. Firstly, the process of composite modified starch was studied, and based on this, synthesized compound crosslinked starch.Then its performance and structure is analyzed.Effects of temperature,time,pH and amounts of modifying agent on modified potato starch have been studied.Based on orthogonal experiments,substituted degree as indexes, the optimum conditionsof acetic acid-esterified potato starch are resulted as follows:pH10,amounts of acetic anhydride 7%,time 2.Oh and temperature 30℃for esterification reaction.Sediment volume as indexes,the optimum conditions of cross-linking potato starch are resulted as follows:pHll,time2.0h,amounts of sodium trimetaphosphate 1.5%and temperature 45℃for cross-linking reaction.The single element and orthogonal experiment showed the optimum hydroxypropyl starch reaction condition as follows:propylene oxide additives for 10%,reaction time was 18h,temperature53℃,anhydrous sodium sulfate amount 8%, hydrogen of sodium usage of 1.1% of starch.In each single degeneration, based on experimental results in accordance with hydroxypropyl-crosslinking-acetylation order preparation potato crosslinking hydroxypropyl composite modified starch.Using X-ray diffraction analyzer, Infra-red spectrometris,modified starch particles structure was analysised. X-ray diffraction revealed that after compound modifieds,starch particles crystal shape was not changed,still belong to type B crystal structure. The infrared spectrum union chemistry analytical table has proven the compound modified reaction process occurrence. The results show that potato starch, potato crosslinking hydroxypropyl starch,potato crosslinking acetylation starch comparison,composite modified starch pasting temperature of reduced,free-thaw stability,viscositeand acid proof,transparency and anti-aging sex increased significantly.

Related Dissertations

  1. Structure and Characterization of Room Temperature Self-crosslinked Acrylonitrile-butadiene-styrene,TQ325.2
  2. Modified guar gum superabsorbent Preparation and Properties,TQ324.8
  3. Containing disulfide bonds , glycosylation end trimethoxysilane polycaprolactone - polyethylene glycol block copolymer synthesis and properties of,O631.3
  4. Cu (Ⅱ) imprinted chitosan crosslinked Membrane and adsorption studies,TB383.2
  5. Study on the Treatment of Potato Starch Wastewater and Method for COD Removal in Utilization Technique of Potato Starchy Residue,X703
  6. Study on Wheat Gluten-Based Composite Protein Edible Films,TS206.4
  7. Study on Sythesis and Adsorption Performance of Chitosan Resin with Template of Ni-Ion,TF815
  8. The Study on Comparision of Raw Materials and Creep Properties of Ultra-High Molecular Weight Polyethylene Fiber,TQ342.61
  9. Studies on the Preparation and Hierarchical Self-assembly of Polymeric Nanoparticles,O631.3
  10. Properties of Solid Polymer Electrolytes Composite Modified by Sca/Inorganic Particles,O631.3
  11. Application of Crosslinked Carboxymethyl Konjac Glucomannan to Trace Elements Analysis and Elemental Speciation,O651
  12. Study on Preperation, Characterization and Properties of Biodegradable Plastics of Potato Starch-MA Ester,TB383.2
  13. Research of Acid Fracturing Temperature Field Model with Considering Acid-rock Reaction Heat,TE357.2
  14. Studies on Membrane Preparation and Performance of Poly [2, 2’-(m-phenylene)-5, 5’-bibenzimidazole] as the High Temperature Proton Exchange Membrane Material,TM911.4
  15. Design and Implementation of Non-Avionics Monitoring Processor Crosslinking Aeroengine Systems,V242
  16. Preparation of Acidolysis-esterification Composite Modified Rice Starch and Its Application in Starch Film,TS236.9
  17. Preparation, Properties and Application of Crosslinked and Esterified Porous Rice Starch,TS231
  18. Treatment of Bovine Milk by Horseradish Peroxidase and Its Impact on the Quality of Set-Yoghurt and Cheese Prepared,TS252.5
  19. Cross-linking of Casein or Soy Protein Isolates with Gelatin by Transglutaminase and Some Functional Properties of the Product Prepared,TS201.2
  20. Isolation and Identification of Propionidacterium from Pit Mud and Its Application in Production of Te-type Liqour,TS262.3

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Starch Industry > Starch processing products > Other
© 2012 www.DissertationTopic.Net  Mobile