Dissertation > Excellent graduate degree dissertation topics show

Studies on the Properties of Starch from Germinated Polished-rice-with-germ

Author: ZhangDongSheng
Tutor: LiuYongLe
School: Changsha University of Science and Technology
Course: Of Food Science
Keywords: Golished-rice-with-germ germination starch physical and chemical characterist Molecule characteristi
CLC: TS235.1
Type: Master's thesis
Year: 2011
Downloads: 8
Quote: 0
Read: Download Dissertation

Abstract


Golished-rice-with-germ is used as the raw material. The mechanism of germination ,the physical and chemical characteristics of starch and the Molecule Characteristics of Starch from germinated polished–rice–with–germ (GPRG), brown rice,germinated brown rice and polished-rice-with-germ(PRG) as the comparison. The aim is to change the characteristics of PRG by germination.It provides technological foundation for the further development and utilization of rice resource The main conclusions are as follows:A study was made on water–absorbing curve of PRG and brown rice in the soaked temperature 25℃, Inspecting the various of enzyme activity and the content of composition by the time single factor test in the process of germination of PRG and brown rice.The results show that:The water–absorbing curve of Polished-rice-with-germ and brown rice presented the same tendency,both of them could absorb a large mount of water and achieve the saturated concentration in eight hour, the PRG began to absorb water earlier and the speed of water absorption rapider than brown rice; The activities ofα–Amylase andβ–Amylase increased during and following germination; The activity of Endoglucanase increased during and following germination; The results showed that total and reductive sugar increased and then decreased during the germination development;The content of total and reductive sugar in PRG higher than brown rice during and following germination; The conlent of starch decreased during the germination development ,but the content of Amylose Having Hot-water Solubility increased continuously along with germination.The physical and chemical characteristics of starch from germinated polished– rice– with– germ (GPRG) were studied with brown rice, germinated brown rice and polished– rice– with– germ as the comparison. Results show that the amylose content of GPRG decreased. The swelling power, solubility, transmittance of GPRG increased and freezing-thawing stability of GPRG was improved. The peak viscosity and breakdown of starch of GPRG decreased; while the lowest viscosity, setback viscosity, consistence viscosity increased remarkably. Germination also influenced the rheological properties of GPRG. The storage modulus(G′)during heating is lowest among the four kinds of starch because of the lowest amylose content.To study the Molecule characteristics of starch from germinated polished-rice-with-germ (GPRG).Methods: using SEM, HPLC, X– Ray Diffractometer and FT–IR to study the changes of the particle morphology,Molecular weigh,crystalli–nity and characteristic structure. Results: the granule morphology of starches underwent little change,the molecular weight,crystallinity has decreased,the ratio of absorbances 1047/1022 cm-1 has decreased. Conclusions: Through the germination, GPRG amylase and GPRG amylopectin were degradated , the Molecule characteristics of starch from germinated polished - rice-with-germ (GPRG) has a obvious change.

Related Dissertations

  1. Study on Preparation of Composite Cross-linked Modified Modified Potato Starch,TS236.9
  2. The Preparation of Aluminum-Ammonium Cationic Starch and Its Application in Papermaking,TS727
  3. Cellular and Proteomic Analyses of Endocytosis Mechanism Involved in Pollen-tube Growth in Nicotiana Tabacum,Q942
  4. Concentrations of Lipids in Grains of Japonica Rice: In Response to Nitrogen Fertilizer and in Relation to Physicochemical Properties of Rice Flour,S511.22
  5. Study on the Mechanism of Night Temperature to Grain Filling of Inferior in Rice,S511
  6. Hemerocallis Species Selection and Seed Production Technology,S682.19
  7. Study on the Characteristics of Endoproteases and Changes of Main Nitrogenous Components during Brown Rice Germination,TS210.1
  8. Study on Comparing the Biology of Weedy Rice (Oryza Sativa L.) and Cultivated Rice (O.Sativa L.),S511
  9. Identification、Diversity and Phylogenetic Analysis of Antagonistic Bacillus Isolated from Different Chinese Areas,S476.1
  10. Studies on Regulating Effect of Nitrogen Rates on Starch Granule Distribution in Grain of Wheat,S512.1
  11. Study on Preparation and Eating Quality of Germinated Polished-rice-with-germ,S511
  12. The Characteristic of Starch Content of Flue-Cured Tobacco Leaves in Different Tobacco-growing Areas and the Relationship with Flavor Type of Flue-Cured Tobacco and Sensory Quality,S572
  13. Correlations between Physicochemical Properties, Molecular Structure of Rice Starch and Rice Eating Quality,S511
  14. Study on Technique of Protein and Starch Extracted from Wheat Bran,S512.1
  15. Differences of Resistant Starch Content and Its Its Correlation with Flour Quality in Different Wheat Cultivars,S512.1
  16. Research on the Physiology Mechanism of Grain Filling of inferior Grain during Day and Night Chemical Regulations,S511
  17. Temperature Study on the Dormancy of Seeds of Idesia Polycarpa Maxim from Different Provenances,S792.99
  18. The Preparation and the Properties of the Composite Films from Cassava Starch and Guar Gum,TS236.9
  19. Study on Processing of Se-Enrichment Germinating Soybean and Distribution of Se in Its Sporut,TS214.2
  20. Effect of Flaxseed Gum on Pasting and Retrogradation of Corn Starch and Application on Flaxseed Gum on Emulsion-Type Sausage,TS231

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Starch Industry > Various starch manufacturing > Cereal starch
© 2012 www.DissertationTopic.Net  Mobile