Dissertation
Dissertation > Industrial Technology > Light industry,handicrafts > Food Industry > Brewing industry > Production of condiments > Food coloring

Study on Mothods of Crude Pigments Extraction by Emulsion

Author LiuQingWei
Tutor ZhangMingJie
School Tianjin University
Course Organic Chemistry
Keywords Emulsion Polymerization Polymer Surfactants Natural pigments Extract
CLC TS264.4
Type Master's thesis
Year 2007
Downloads 176
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Natural pigment , food additive , it is an inevitable trend to replace synthetic chemical pigment in Europe and the United States and other developed countries have banned synthetic pigment used in food, medicine . Natural pigments come from fruits, vegetables , flowers and other natural products on human security , higher health functions easy to absorb and both have a good preventive effect on cancer, heart disease , eye disease . Natural pigment of various extraction methods , solvent extraction process is simple , less investment in equipment , the technology is easy to grasp , the widest application , is more commonly used method . However, the use of organic solvents to extract the presence cause serious pollution to the environment . Through a simple, quick test method , the use of acrylic acid, butyl acrylate, styrene , n-butanol , distilled water, sodium hydroxide , potassium persulfate, emulsion polymerization , and thus synthesis of a polymer surfactant . A series of fat-soluble natural pigment extracted and then take advantage of this polymer surfactant , these natural pigments including lycopene , capsanthin , chlorophyll , carotene , the orange pigment . The method with water as the solvent , to avoid the toxicity of the organic solvent extraction , severe pollution , expensive shortcomings and can be seen through the comparison of the effect of the extract with organic solvent extraction , the extraction efficiency is not less than the organic solvents extraction method. Experiments prove that the new method of extraction of the fat-soluble natural pigment is a practical use of the polymeric surfactant .

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