Dissertation > Excellent graduate degree dissertation topics show

Microencapsulation of Glycerol Monolaurate

Author: LiXiang
Tutor: FengFengQin
School: Zhejiang University
Course: Food Engineering
Keywords: Microencapsulation GML Spray drying Antibacterial
CLC: TS202.3
Type: Master's thesis
Year: 2012
Downloads: 94
Quote: 0
Read: Download Dissertation

Abstract


Glycerol Monolaurate (GML) naturally exists in breast milk, it has good emulsification and antimicrobial properties simultaneously. However, the water unsoluble and unpleasant taste properties of GML restrict its application in food industry. The microencapsulated GML with micro capsule technology can not only can maintain the functional property of GML, but also improve its fluidity, water solubility and taste, that can expand its application in food industry.The wall materials were selected according to the results of encapsulation as following:starch sodium octenyl succinate (SSOS) and maltodextrane (MD) were used as wall materials, sucrose ester (SE) was emulsifier. The microencapsulated GML was obtained by spray drying process. The result of the orthogenesis test of optimizing compose based on the single factor experiment showed that the optimum formulation of the microencapsulated GML was as follow:the ratio of SSOS to MD is 23(w/w), the ratio of core to wall is 2:7(w/w), the content of emulsifier is 1%, the total solid concentration of the emulsion is 32%. The optimum homogenizing pressure and spray drying technological parameters were confirmed as follows:homogenizing pressure is 35MPa, feed temperature is 55℃, feeding rate is 30mL/min, inlet temperature is 165℃.The microencapsulated GML is of milky white color, showed good fluidity and solubility, the microencapsulation efficiency was 77.69%, the moisture content was 3.41%, the average particle size was 6.670μm The particles were irregular ball under electron microscope, and the glass transition temperature (Tg) was 39.0℃which indicated that the microencapsulated GML has good stability on the room temperature. The result of organoleptic test of the baby formula and nutrition rice meal added microencapsulated GML and GML respectively showed that, the threshold of the microencapsulated GML (0.41% and 1.2%, respectively) were higher than that of GML(0.037% and 0.14%,). The results of the inhibitory effects against Escherichia coli and staphylococcus aureus were as follows:the antibacterial ability of GML was affected by the encapsulation, the greater the concentration of GML, the less the influence.

Related Dissertations

  1. Recovery Whey Soy Protein by Microfiltration and Development of Whey Powder,TQ936.2
  2. Study on Phylogenetic Diversity and Bioactivity of Symbiotic Fungi of Coral,R284
  3. Properties and Application Research of Multi-Antibacterial Polyamide Fibers,TQ342.1
  4. Study on the Enrichment of Antimicrobial Peptides and Purification Technology in Wheat Germ,TQ936.16
  5. Study on Screening of Bacterial Quorum Sensing from Plant Extraction and Their Inhibitions on Biofilm Formation,Q93
  6. Synthesis and Research of Waterborne Acrylate Resin for Antibacterial Varnish,TQ316.334
  7. Research on the Inhibition Effect of Different Preservatives on Staphylococcus Aureus Rosenbach in Cantonese Cured Meat,TS251.1
  8. An Indoor Navigation System Based on GML,TN967.3
  9. The Research on Forestry Geographic Information Sharing Mechanism Based on GML,P208
  10. The fecal Coprinus mycelium preservation and biological activity of,TQ920.1
  11. A charcoal -like Micromonospora antibacterial antibiotics produced and Thermal Mutants,TQ465
  12. Acetophenone derivatives and biological activity of antifungal,TQ455.4
  13. Study on the Extraction and Antibacterial Activity of Turmeric Oil and the Purification of Curcumin,TQ461
  14. Preparation, Identification and Biological Evaluation of Oxidation Products of (-)-Epigallocatechin-3-O-gallate,TQ463
  15. Synthesis and Biological Activities Evaluation of 1, 3-Thiazolidin-4-one and 1, 3, 5-Triazine Derivatives,TQ463.53
  16. Studies on Preparation Processo for the Fufanghongdoushan Granule,R283
  17. Design and Implementation of city-level geographic information sharing interactive systems based on XML Web Service,P208
  18. Research on Expression and Transfer of 3D Spatial Data Based on Web Services,P208
  19. Synthesis and Application Research of Polyhexamethylene Guanidine,TQ316.3
  20. Antibacterial deodorant polyester fiber,TQ342.2

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > General issues > Food ingredients and additives > Food Additives
© 2012 www.DissertationTopic.Net  Mobile