超高压处理对多酚氧化酶活性的影响

曾庆梅 潘见 谢慧明 杨毅 黄训端

曾庆梅, 潘见, 谢慧明, 杨毅, 黄训端. 超高压处理对多酚氧化酶活性的影响[J]. 高压物理学报, 2004, 18(2): 144-148 . doi: 10.11858/gywlxb.2004.02.009
引用本文: 曾庆梅, 潘见, 谢慧明, 杨毅, 黄训端. 超高压处理对多酚氧化酶活性的影响[J]. 高压物理学报, 2004, 18(2): 144-148 . doi: 10.11858/gywlxb.2004.02.009
ZENG Qing-Mei, PAN Jian, XIE Hui-Ming, YANG Yi, HUANG Xun-Duan. Effect of High Pressure (HP) Treatments on Polyphenoloxidase (PPO) Activity in Pear Juices[J]. Chinese Journal of High Pressure Physics, 2004, 18(2): 144-148 . doi: 10.11858/gywlxb.2004.02.009
Citation: ZENG Qing-Mei, PAN Jian, XIE Hui-Ming, YANG Yi, HUANG Xun-Duan. Effect of High Pressure (HP) Treatments on Polyphenoloxidase (PPO) Activity in Pear Juices[J]. Chinese Journal of High Pressure Physics, 2004, 18(2): 144-148 . doi: 10.11858/gywlxb.2004.02.009

超高压处理对多酚氧化酶活性的影响

doi: 10.11858/gywlxb.2004.02.009
详细信息
    通讯作者:

    曾庆梅

Effect of High Pressure (HP) Treatments on Polyphenoloxidase (PPO) Activity in Pear Juices

More Information
    Corresponding author: ZENG Qing-Mei
  • 摘要: 研究了超高压中温协同处理对砀山梨汁中多酚氧化酶活性的影响,实验压力为0.1~500 MPa,温度为20~60 ℃。此外,考察了不同pH值(3~7)和保压时间(2~34 min)超高压处理对酶活性的影响。实验结果分析表明:在处理温度为50 ℃、保压时间为10 min和梨汁pH值为5的条件下,200~300 MPa处理梨汁时多酚氧化酶被激活,活性表现最高;500 MPa时酶的活性下降到75.3%。协同温度为30 ℃处理梨汁时,酶的活性反而增大;30 ℃以后,酶活性随温度升高而迅速降低;有效协同高压处理的温度为40 ℃。随着保压时间的延长,梨汁中过氧化物酶的活性减小;18 min以前下降速度较快些,之后下降速度变缓。pH在5~6之间,酶的残留活性最大;pH值为6时,梨汁中多酚氧化酶最为耐压。

     

  • Thomas L H. The Calculation of Atomic Fields [J]. Proc Camb Phil Soc, 1927, 23: 542.
    Fermi E. Un Metodo Statistico per la Determinazione di Alcune Priorieta dell'atome [J]. Rend Ac Lincei, 1927, 6: 602.
    Fermi E. Sulla Deduzione Statistica di Alcune Propriet dell'atomo. Applicazione alla Teoria del Sistema Periodico Degli Elementi [J]. Z Physik, 1928, 48: 73.
    Xu X S, Zhang W X. Introduction to the Theory of Practical Equation of States [M]. Beijing: Science Press, 1986: 138-149. (in Chinese)
    徐锡申, 张万箱. 实用物态方程理论导引 [M]. 北京: 科学出版社, 1986: 138-149.
    Yuan J M. Self-Consistent Average-Atom Scheme for Electronic Structure of Hot and Dense Plasmas of Mixtures [J]. Phys Rev E, 2002, 66: 047401.
    Yuan J M. Opacity of Hot and Dense Plasmas of a Mixture Using an Average-Atom Approach [J]. Chin Phys Lett, 2002, 19: 1459.
    Zhao Y J, Zhang Z J. Angular Momentum and the Energy of Atom [M]. Beijing: Science Press, 1982. (in Chinese)
    赵伊君, 张志杰. 角动量与原子能量 [M]. 北京: 科学出版社, 1982.
    Zhao Y J, Zhang Z J. Calculations of Atomic Structure [M]. Beijing: Science Press, 1987: 134-147. (in Chinese)
    赵伊君, 张志杰. 原子结构的计算 [M]. 北京: 科学出版社, 1987: 134-147.
    Dharma-Wardana M W C, Taylor R. Exchange and Correlation Potentials for Finite Temperature Quantum Calculations at Intermediate Degeneracies [J]. J Phys C: Solid State Phys, 1981, 14: 629.
    Bennett B T, Johnson J D, Kerley G I, et al. Recent Developments in the Sesame Equation-of-State Library [R]. LA 7130, 1978.
    Zink J W. Shell Structure and the Thomas-Fermi Equation of State [J]. Phys Rev, 1968, 176: 279.
    Lee C M, Thorsos B I. Properties of Matter at High Pressures and Temperatures [J]. Phys Rev A, 1978, 17: 2073.
  • 加载中
计量
  • 文章访问数:  11649
  • HTML全文浏览量:  738
  • PDF下载量:  949
出版历程
  • 收稿日期:  2003-09-09
  • 修回日期:  2003-11-17
  • 发布日期:  2004-06-05

目录

    /

    返回文章
    返回