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甘薯果胶的特性、超声波改性及体外抗癌活性研究

摘要第6-8页
Abstract第8-10页
Abbreviations第18-20页
CHAPTER 1. INTRODUCTION第20-23页
    1.1. GENERAL INTRODUCTION第20-23页
CHAPTER 2 LITERATURE REVIEW第23-39页
    2.1. SWEET POTATO PRODUCTION AND PROCESSING IN CHINA第24-25页
    2.2. PLANT CELL WALL STRUCTURE第25-26页
    2.3. PECTIN第26-34页
        2.3.1. Classes of pectins第28-29页
        2.3.2. Bioactivity of pectin第29-31页
            2.3.2.1. Prebiotic ability第30页
            2.3.2.2 Anti-cancer properties and Antioxidant capacity第30-31页
        2.3.3. Pectin as a functional ingredient第31-32页
        2.3.4. Pectin Modification第32-34页
            2.3.4.1. Ultrasonic sonochemistry第32-33页
            2.3.4.2. Sonication of polymers第33-34页
    2.4. PECTIN PRODUCTION第34-37页
        2.4.1. Quality of sweet potato pectin第34-35页
        2.4.2. Sweet Potato as pectin resource第35-37页
    2.5. THE CURRENT STUDY第37-39页
        2.5.1. Aim and objective of the current study第38-39页
Chapter 3 CHARACTERIZATION AND FUNCTIONAL PROPERTY OF SODIUM HEXAMETAPHOSPHATE EXTRACTED PECTIN FROM SWEET POTATO STARCH EXTRACTION RESIDUES第39-67页
    3.1. INTRODUCTION第40-43页
    3.2. MATERIAL AND METHODS第43-53页
        3.2.1. Materials第43页
        3.2.2. Chemicals and solvents第43-44页
        3.2.3. Proximate composition of sweet potato residues第44页
        3.2.4. Preparation of starch free residues第44页
        3.2.5. Pectin extraction from starch free residues第44-46页
        3.2.6. Pectin Yield第46页
        3.2.7. Degree of methoxylation第46-47页
        3.2.8. Galacturonic Acid content第47-48页
            3.2.8.1. Titrimetric method第47页
            3.2.8.2. Carbazole-Sulphuric acid method第47-48页
        3.2.9. The weight average molecular weight (MW)第48-49页
        3.2.10. Neutral sugar composition第49-50页
        3.2.11. Fourier transfer infrared spectra of pectin isolated第50页
        3.2.12. Antioxidant activity of pectin第50-52页
            3.2.12.1. FRAP第50-51页
            3.2.12.2. Oxygen radical antioxidant capacity (ORAC)第51-52页
        3.2.13. Ferrous ion chelating activity第52-53页
        3.2.14. Data Analysis第53页
    3.3. RESULTS AND DISCUSSION第53-66页
        3.3.1. Proximate composition of sweet potato residues第53-54页
        3.3.2. Pectin yield, purity and degree of methoxylation第54-56页
        3.3.3. Proximate composition of pectin第56-57页
        3.3.4. The neutral sugar composition of pectin第57-58页
        3.3.5. Molecular weight of pectin第58-60页
        3.3.6. FTIR profile of pectin第60-62页
        3.3.7. Antioxidant activity of pectin第62-64页
        3.3.8. Fe~(2+)chelation activity第64-66页
    3.4. CONCLUSION第66-67页
CHAPTER 4 ULTRASONIC DEGRADATION OF SWEET POTATO PECTIN ANDITS ANTIOXIDANT ACTIVITY第67-99页
    4.1. INTRODUCTION第68-71页
    4.2. MATERIAL AND METHODS第71-79页
        4.2.1. Material第71页
        4.2.2. Pectin preparation第71-72页
        4.2.3. Sonochemical reactor第72页
        4.2.4. Effect of pectin concentration and sonication time on pectin sonolysis第72-73页
        4.2.5. Effect of ultrasonic power on pectin sonolysis第73页
        4.2.6. Effect of ultrasonic duty cycle on pectin sonolysis第73页
        4.2.7. Neutral sugar content第73-74页
        4.2.8. Molecular weight determination第74-75页
        4.2.9. Degree of methoxylation (DM) and galacturonic acid (Gal A) content第75-76页
        4.2.10. FTIR profile of pectin第76页
        4.2.11. Antioxidant activity of modified pectin第76-78页
            4.2.11.1. Oxygen radical absorbance capacity (ORAC)第76-78页
            4.2.11.2. Ferric reducing antioxidant power assay (FRAP)第78页
        4.2.12. Ferrous ion chelating activity第78-79页
        4.2.13. Optical density of sonicated pectin solutions第79页
        4.2.14. Statistical analysis第79页
    4.3. RESULTS AND DISCUSSIONS第79-98页
        4.3.1. Effect of pectin concentration and sonication time on pectin sonolysis第79-81页
        4.3.2. Effect of sonication power on pectin sonolysis第81-84页
        4.3.3. Effect of sonication duty cycle on pectin sonolysis第84-86页
        4.3.4. Neutral sugar composition of pectin第86-87页
        4.3.5. Degree of methoxylation (DM) and Galacturonic (Gal A) acid content第87-89页
        4.3.6. FTIR analysis of pectin structure第89-91页
        4.3.7. Antioxidant capacity第91-95页
        4.3.8. Ferrous ion chelation activity第95-96页
        4.3.9. Optical density of pectin solutions第96-98页
    4.4. CONCLUSION第98-99页
CHAPTER 5 ULTRASONIC MODIFIED SWEET POTATO PECTIN INDUCES APOPTOSIS LIKE CELL DEATH IN COLON CANCER (HT-29) CELLAND BREAST (MCF-7) CANCER LINES第99-137页
    5.1. INTRODUCTION第100-103页
    5.2. METHODOLOGY第103-115页
        5.2.1. Materials第103页
        5.2.2. Ultrasonic treatment of pectin第103-104页
        5.2.3. Cell lines and cultural conditions第104页
        5.2.4. Property of ultrasonic modified pectin第104页
        5.2.5. Pectin neutral sugar composition analysis第104-105页
        5.2.6. MTT cell proliferation assay第105-106页
        5.2.7. 4'-6-Diamidino-2-phenylindole (DAPI) confocal microscopy staining of cells第106-107页
        5.2.8. Acridine Orange/Ethidium Bromide (AO/EB) dual staining-Apoptosis第107-108页
        5.2.9. Annexin V-FITC/PI (propidium iodide) assay第108-109页
        5.2.10. Measuring Caspase-3 Activity第109-110页
        5.2.11. DNA ladder assay第110-113页
        5.2.12. Neutral red autophagic assay第113页
        5.3.13. Clonogenic assay第113-114页
        5.2.14. Statistical Analysis第114-115页
    5.3. RESULTS AND DISCUSSION第115-134页
        5.3.1. Neutral sugar composition of Pectin第115页
        5.3.2. Cell Culture Condition第115-116页
        5.3.3. MTT Cell proliferation assay第116-118页
        5.3.4. Cell cytotoxicity LDH assay第118-120页
        5.3.5. DAPI (4', 6-diamidino-2-phenylindole)fluorescence microscopy第120-122页
        5.3.6. Acridine orange/Ethidium bromide staining (AO/EB)第122-124页
        5.3.7. Annexin V FITIC-Propidium iodide第124-126页
        5.3.8. Caspase-3 activity第126-129页
        5.3.9. DNA laddering Assay第129-130页
        5.3.10. Neutral red autophagic assay第130-132页
        5.3.11. Clonogenic assay第132-134页
    5.4. CONCLUSION第134-137页
CHAPTER 6 OVERALL CONCLUSION AND RECOMMENDATION第137-142页
    6.1. CONCLUSION第137-140页
    6.2. RECOMMENDATIONS第140-142页
BIBLIOGRAPHY第142-163页
Acknowledgement第163-164页
RESUME第164-165页
PUBLICATIONS第165页

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