华北农学报 ›› 1997, Vol. 12 ›› Issue (1): 81-85. doi: 10.3321/j.issn:1000-7091.1997.01.017

所属专题: 苹果

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苹果叶片过氧化物酶理化性质分析

宋金耀, 孟庆祥, 刘永军   

  1. 河北农业技术师范学院, 昌黎 066600
  • 收稿日期:1995-06-29 出版日期:1997-03-28

Physical and Chemical Properties of Peroxidase from Leaves of Apple(Murus pumila Mill)

Song Jinyao, Meng Qingxiang, Liu Yongjun   

  1. Department of Horticulture,Hebei Agrotechnical Teachers'College, Changli 066600
  • Received:1995-06-29 Published:1997-03-28

摘要: 以“青富13”苹果叶片为试材,研究了苹果过氧化物酶(POD)的理化性质。结果表明:苹果叶片POD同工酶可粗分为酸性酶和碱性酶两大类,酸性酶的最适pH在6.0左右,碱性酶的最适pH在9.0左右;在最适pH条件下,不同的缓冲液体系对POD活性有一定的影响;该酶系最适温度综合表现为25℃左右,热稳定性试验表明苹果POD相当耐热,80℃可维持活性2min左右,55℃可保持活性72h;底物试验证明,该酶系可催化H2O对酚、胺类化合物的氧化作用

关键词: 苹果叶片, 过氧化物酶, 理化性质

Abstract: The physical and chemical properties of peroxidase(POD)in leaves of apple tree were researched by taking apple strain Qingfu 13 as samples.The results suggested that the POD might be divided into two types:the acidic(optimum pH 6.0)and the basic(optimum pH 9.0)enymes.At optimum pH different buffer systems could affect the POD activity.The enzymes are heat stable,and can keep the activity at 80℃ for 2~3 min and at 55℃ for 72 h.The substrate test results revealed that the POD of apple leaves could impel H2Oto oxidize phenol and amine compounds.

Key words: Apple leaves, Peroxidase, Physiochemical property

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引用本文

宋金耀, 孟庆祥, 刘永军. 苹果叶片过氧化物酶理化性质分析[J]. 华北农学报, 1997, 12(1): 81-85. doi: 10.3321/j.issn:1000-7091.1997.01.017.

Song Jinyao, Meng Qingxiang, Liu Yongjun. Physical and Chemical Properties of Peroxidase from Leaves of Apple(Murus pumila Mill)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(1): 81-85. doi: 10.3321/j.issn:1000-7091.1997.01.017.

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