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Study on the Effects of High Hydrostatic Pressure, Ultrasonication, and Heat on Mulberry (Morus Moraceae) Juice Quality Characteristics

ACKNOWLEDGMENT第6-8页
ABSTRACT第8-10页
摘要第11-13页
TABLE OF CONTENTS第13-19页
LIST OF TABLES第19-21页
LIST OF FIGURES第21-25页
DEDICATION第25-26页
CHAPTER 1 INTRODUCTION第26-36页
    REFERENCES第31-36页
CHAPTER 2 OBJECTIVES第36-38页
CHAPTER 3 LITERATURE REVIEW第38-62页
    3.1 INTRODUCTION第38-41页
    3.2 New trend in food processing第41页
    3.3 Thermal processing第41-42页
    3.4 High hydrostatic pressure processing technology第42-46页
        3.4.1 Effect of high hydrostatic pressure on microorganisms第43-44页
        3.4.2 Effect of high hydrostatic pressure on enzymes第44-45页
        3.4.3 Effect of high hydrostatic pressure on colour第45-46页
    3.5 Principle of ultrasonic treatment of food第46-49页
        3.5.1 Effect of ultrasound on microorganisms第47-49页
        3.5.2 Effect of ultrasound on enzymes第49页
        3.5.3 Effect of ultrasound on colour第49页
    3.6 Enzymes in food第49-50页
    3.7 Anthocyanins第50-51页
    3.8 Colour第51-52页
    REFERENCES第52-62页
CHAPTER 4 A STUDY OF THE EFFECT OF HIGH HYDROSTATIC PRESSURE PROCESSING ON ANTHOCYANINS COMPOSITION OF MULBERRY JUICE USING HPLC-ESI-MS第62-86页
    ABSTRACT第62-63页
    4.1 INTRODUCTION第63页
    4.2 MATERIAL AND METHODS第63-66页
        4.2.1 Reagents第63-64页
        4.2.2 Source and sample preparation第64页
        4.2.3 Pigment extraction第64页
        4.2.4 Extract purification第64-65页
        4.2.5 HHP treatment第65页
        4.2.6 HPLC-ESI-MS analysis第65-66页
    4.3 RESULTS AND DISCUSSION第66-83页
        4.3.1 Control sample第66-70页
        4.3.2 Sample treated at 200 MPa for 20 min第70-75页
        4.3.3 Sample treated at 400 MPa for 20 min第75-78页
        4.3.4 Sample treated at 600 MPa for 20 min第78-83页
    4.4 CONCLUSION第83页
    REFERENCES第83-86页
CHAPTER 5 A STUDY OF THE EFFECT OF HEAT AND HIGH HYDROSTATIC PRESSURE ONANTHOCYANINS AND ENZYMES OF MULBERRY(Morus nigra) JUICE USINGRESPONSE SURFACE METHODOLOGY第86-112页
    ABSTRACT第86-87页
    5.1 INTRODUCTION第87-88页
    5.2 MATERIALS AND METHODS第88-93页
        5.2.1 Sample source and preparation第88页
        5.2.2 Experimental design第88-89页
        5.2.3 Heat and pressure treatment第89-90页
        5.2.4 Analysis conducted第90页
        5.2.5 Anthocyanin determination第90-91页
        5.2.6 Enzyme activity determination第91-92页
            5.2.6.1 Enzyme extraction第91-92页
            5.2.6.2 PPO assay第92页
            5.2.6.3 POD assay第92页
        5.2.7 Optimization of the treatment Process第92-93页
        5.2.8 Statistical analysis第93页
    5.3 RESULTS AND DISCUSSION第93-107页
        5.3.1 The effect of the independent variables on per cent anthocyanin retained第95-98页
        5.3.2 Polyphenol oxidase activity第98-102页
        5.3.3 Peroxidase activity第102-106页
        5.3.4 Optimization第106-107页
    5.4 CONCLUSION第107-108页
    REFERENCES第108-112页
CHAPTER 6 ULTRASONICATION TREATMENT EFFECT ON ANTHOCYANINS, COLOUR,MICROORGANISMS AND ENZYME INACTIVATION OF MULBERRY (Moraceae nigra)JUICE第112-132页
    ABSTRACT第112-113页
    6.1 INTRODUCTION第113-115页
    6.2 MATERIALS AND METHODS第115-119页
        6.2.1 Source and sample preparation第115页
        6.2.2 Ultrasonic treatment第115-116页
        6.2.3 Anthocyanin content determination第116-117页
        6.2.4 Enzyme extraction and activity determination第117-118页
        6.2.5 Colour measurement第118页
        6.2.6 Microbiological analysis第118-119页
        6.2.7 Statistical analysis第119页
    6.3 RESULTS AND DISCUSSION第119-125页
        6.3.1 Effect of ultrasound on microorganism population in mulberry juice第119-120页
        6.3.2 Effect of ultrasound on mulberry juice Anthocyanin第120-121页
        6.3.3 Colour analysis第121-123页
        6.3.4 Residual enzyme activity第123-125页
    6.4 CONCLUSION第125页
    REFERENCES第125-132页
CHAPTER 7 OPTIMIZATION OF ULTRASONIC AND HIGH HYDROSTATIC PRESSURECONDITIONS ON QUALITY PARAMETERS OF MULBERRY(Morus moraceae)JUICEUSING RESPONSE SURFACE METHODOLOGY第132-168页
    ABSTRACT第132页
    7.1 INTRODUCTION第132-133页
    7.2 MATERIALS AND METHODS第133-138页
        7.2.1 Source and sample preparation第133-134页
        7.2.2 EXPERIMENTAL DESIGN第134-135页
        7.2.3 Ultrasonic and pressure treatments第135页
        7.2.4 Anthocyanin determination第135页
        7.2.5 Enzyme extraction and activity determination第135-136页
        7.2.6 Microbiological analysis第136页
        7.2.7 Colour measurement第136-137页
        7.2.8 Optimization of the manosonication process第137页
        7.2.9 Statistical analysis第137-138页
    7.3 RESULTS AND DISCUSSION第138-163页
        7.3.1 The influence of the independent variables on per cent anthocyanin retained第139-142页
        7.3.2 The impact of the independent variables on RA of polyphenol oxidase第142-146页
        7.3.3 The effect of the independent variables on RA of peroxidase activity第146-150页
        7.3.4 The influence of the independent variables on colour brightness(L~*)第150-154页
        7.3.5 The influence of the independent variables on hue angle(H~(?))第154-158页
        7.3.6 The effect of the independent variables on chroma(C~*)第158-161页
        7.3.7 Microorganism population第161-162页
        7.3.8 Optimization第162-163页
    7.4 CONCLUSION第163-164页
    REFERENCES第164-168页
CHAPTER 8 THE IMPACT OF HIGH HYDROSTATIC PRESSURE TREATMENT ONANTHOCYANINS, COLOUR, MICROORGANISMS, AND ENZYME ACTIVITY OFMULBERRY JUICE第168-184页
    ABSTRACT第168页
    8.1 INTRODUCTION第168-170页
    8.2 MATERIALS AND METHODS第170-173页
        8.2.1 Sample source and preparation第170页
        8.2.2 High hydrostatic pressure treatment第170-171页
        8.2.3 Anthocyanin determination第171页
        8.2.4 Enzyme extraction第171-172页
            8.2.4.1 PPO activity measurement第172页
            8.2.4.2 POD activity measurement第172页
        8.2.5 Colour measurement第172-173页
        8.2.6 Microbiological count determination第173页
        8.2.7 Statistical analysis第173页
    8.3 RESULTS AND DISCUSSION第173-180页
        8.3.1 Effect of HHP on enzyme activity of mulberry juice第173-175页
        8.3.2 Effect of HHP on anthocyanin content of mulberry juice第175-176页
        8.3.3 Effect of HHP on colour parameters of mulberry juice第176-179页
        8.3.4 Effect of HHP on microorganism of mulberry juice第179-180页
    8.4 CONCLUSION第180-181页
    REFERENCES第181-184页
CHAPTER 9 GENERAL CONCLUSIONS第184-187页
    9.1 HHP effect on anthocyanin profile第184-185页
    9.2 Effect of heat and high hydrostatic pressure第185页
    9.3 Effect of ultrasonic treatment第185-186页
    9.4 Synergistic effect of manosonication on quality characteristics of mulberry juice第186页
    9.5 HHP processing on quality parameters第186-187页
    9.6 Comparison of various treatment methods第187页
        9.6.1 In terms of anthocyanin retention by various treatment methods第187页
        9.6.2 In terms of inactivation of PPO and POD activity第187页
        9.6.3 In terms of colour retention after treatment第187页

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