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水牛乳酪蛋白与牛乳酪蛋白生物活性肽的对比分析

ACKNOWLEDGEMENT第6-14页
ABSTRACT第14-15页
摘要第16-18页
LIST OF ABBREVIATIONS第18-19页
CHAPTER ONE GENERAL INTRODUCTION AND REVIEW OF LITRATURE第19-56页
    1.1. Introduction第19-22页
    1.2. General composition and properties between buffalo and bovine milk第22-23页
    1.3. Production of bioactive peptides第23-31页
        1.3.1 Enzymatic hydrolysis第24-26页
        1.3.2 Purification and fractionation of bioactive peptides第26-30页
            1.3.2.1 Preparation and clean-up of bioactive Peptides第26页
            1.3.2.2 Fractionation of bioactive peptides by Ultrafiltration第26-27页
            1.3.2.3 Purification of bioactive peptides by chromatography第27-30页
        1.3.3. Identification of bioactive peptides第30-31页
    1.4. Biological activities of casein hydrolysates第31-40页
        1.4.1 Antioxidant activity第33-40页
            1.4.1.1 Effects of amino acid on antioxidant properties第34-38页
            1.4.1.2 Antioxidant Capacity Evaluation第38-40页
                1.4.1.2.1 Antioxidant assay by ABTS Method第39-40页
    1.5. Absorption and metabolism of casein-derived bioactive peptides第40-41页
        1.5.1. Absorption第40-41页
        1.5.2. Metabolism第41页
    1.6. Significant of research topic第41-42页
    1.7. Objectives第42-43页
    1.8 Literature cited第43-56页
CHAPTER TWO PHYSICOCHEMICAL AND STRUCTURAL PROPERTIES OF BUFFALO AND BOVINECASEIN第56-70页
    2.1.Introduction第56-57页
    2.2. Materials and Methods第57-59页
        2.2.1. Materials第57页
        2.2.2. Preparation of buffalo sodium caseinate第57页
        2.2.3. Chemical properties analysis第57-58页
        2.2.4. Physicochemical properties analysis第58-59页
            2.2.4.1. Measurement of solubility and water activity第58页
            2.2.4.2. Scanning electron microscopy (SEM)第58页
            2.2.4.3. Color measurements第58-59页
            2.2.4.4. Practical size of casein analysis第59页
            2.2.4.5. Zeta-potential (ζ potential) measurement第59页
        2.2.5. Statistical analysis第59页
    2.3. Results and Discussion第59-66页
        2.3.1. Chemical composition第59-60页
        2.3.2. Physical properties of buffalo and bovine casein第60-61页
        2.3.3. Scanning electron microscopy (SEM)第61页
        2.3.4. Particle Size Distribution of the buffalo and bovine casein第61-64页
        2.3.5. Color parameters第64-65页
        2.3.6. ζ –potential第65-66页
    2.4. Conclusions第66-67页
    2.5. Literature cited第67-70页
CHAPTER THREE RELEASE OF ANTIOXIDANT PEPTIDES FROM BUFFALO AND BOVINE CASEINS:INFLUENCE OF PROTEASES ON RADICAL SCAVENGING ACTIVITIES AND PROTECTIONAGAINST DNA STRAND DAMAGE第70-97页
    3.1. Introduction第70-71页
    3.2. Materials and Methods第71-77页
        3.2.1. Materials第71-72页
        3.2.2 Preparation of buffalo sodium caseinate第72页
        3.2.3. Preparation of casein hydrolysates第72页
        3.2.4. Enzymatic hydrolysis and degrees of hydrolysis (DH)第72-73页
        3.2.5. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE)第73页
        3.2.6. Determination of total amino acid compositions第73-74页
        3.2.7. Reversed-phase HPLC第74页
        3.2.8. Determination of antioxidant activities第74-77页
            3.2.8.1. ABTS radical scavenging activity第74-75页
            3.2.8.2. Hydroxyl (OH~(·-)) radical scavenging activity第75页
            3.2.8.3. Superoxide anion (O_2~(·-)) radical scavenging activity第75-76页
            3.2.8.4. Oxygen radical absorbance capacity (ORAC) assay第76页
            3.2.8.5. Ferrous ion chelating ability第76页
            3.2.8.6. Ferric reducing antioxidant power (FRAP) assays第76-77页
            3.2.8.7. DNA nicking assays第77页
        3.2.9. Statistical analyses第77页
    3.3.Results and Discussion第77-90页
        3.3.1. Degrees of enzymatic hydrolysis of CB and CN第77-78页
        3.3.2. SDS-PAGE第78-79页
        3.3.3. Amino acid analyses第79-80页
        3.3.4. Characterization of casein hydrolysates using RP-HPLC第80-83页
        3.3.5. Antioxidant activities of CNH and CBH第83-90页
            3.3.5.1. ABTS free radical scavenging activity第83-84页
            3.3.5.2. OH~(·-) radical scavenging activity第84-85页
            3.3.5.3. O_2~(·-) radical scavenging activities第85-87页
            3.3.5.4. ORAC assays第87-88页
            3.3.5.5. Ferrous ion chelating activities第88-89页
            3.3.5.6. FRAP activities第89-90页
            3.3.5.7. DNA nicking assays第90页
    3.4. Conclusions第90-92页
    3.5. Literature cited第92-97页
CHAPTER FOUR FRACTIONATION AND IDENTIFICATION OF NOVEL ANTIOXIDANT PEPTIDES FROMBUFFALO AND BOVINE CASEIN HYDROLYSATES第97-127页
    4.1.Introduction第97-99页
    4.2.Materials and methods第99-102页
        4.2.1. Materials第99页
        4.2.2. Preparation of sodium caseinate from buffalo milk (CB)第99页
        4.2.3. Preparation of casein hydrolysates第99页
        4.2.4. Preparation of peptide fractions第99-100页
        4.2.5. Determination of total amino acids composition第100页
        4.2.6. Fractionation of the UF-VI by RP-HPLC第100-101页
        4.2.7. Estimation of ABTS radical scavenging activity第101页
        4.2.8. Analysis by RP-HPLC-MS/MS第101-102页
        4.2.9. Statistical analysis第102页
    4.3. Results and discussions第102-121页
        4.3.1. Fractionation of CBH and CNH by ultrafiltration第102-105页
        4.3.2. Amino acids composition of UF-VI fraction第105-106页
        4.3.3. Fractionations of UF-VI trypsin CBH and CNH by semi-preparative RP-HPLC第106-110页
        4.3.4. Fractionations of UF-VI alcalase CBH and CNH by semi-preparative RP-HPLC第110-113页
        4.3.5. Identification of the antioxidant peptides from fractions trypsin CBH and CNH by LC-MS/MS第113-115页
        4.3.6. Identification of the antioxidant peptides from fractions alcalase CBH and CNH by LCMS/MS第115-119页
        4.3.7. The proposed model for interaction between active peptide with ABTS第119-121页
    4.4.Conclusion第121-122页
    4.5.Literature cited第122-127页
General conclusion and recommendations第127-129页
List of puplication第129页

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