Effect of Pressure Combined with Metal Ions on Polyphenol Oxidase (PPO) Activity from Raspberry
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摘要: 树莓多酚氧化酶具有较强的耐压性,在600 MPa压力下处理45 min,其残余酶活仍高达40%以上。为了进一步钝化树莓内源多酚氧化酶的活性,研究了金属离子辅助高静压对树莓多酚氧化酶钝化的影响。在树莓多酚氧化酶粗酶液中添加对酶活性有抑制、激活、无改变的金属离子,研究其辅助400、600 MPa压力处理钝化树莓多酚氧化酶的效果。发现添加金属离子后,多酚氧化酶的活性随压力增大、时间延长而降低;Fe2+、Mn2+以及Cu2+均有不同程度的协同高静压钝化作用,而Ca2+在钝化树莓多酚氧化酶时与高静压出现拮抗现象,对树莓多酚氧化酶活性无影响的Zn2+未出现协同/拮抗作用。Abstract: The activity of polyphenol oxidase from red raspberry treated at 600 MPa for 45 min is even up to 40%, indicating strong pressure resistance. In order to further inactivate polyphenol oxidase from red raspberry, the combination effect of high hydrostatic pressure and metal ions on polyphenol oxidase activity was investigated. The change of polyphenol oxidase activity treated at 400 and 600 MPa after adding metal ions was revealed. The activity of raspberry polyphenol oxidase gradually decreases with the pressure increasing and/or the holding time extending with/without adding metal ions. Fe2+, Mn2+ (both inhibited polyphenol oxidase) and Cu2+ (activated polyphenol oxidase) in combination with pressure have synergistic effects, Ca2+ (inhibited polyphenol oxidase) combined with pressure has antagonistic effect, and Zn2+ (not change polyphenol oxidase activity) has no synergistic/antagonistic effect.
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Key words:
- high hydrostatic pressure /
- polyphenol oxidase /
- metal ions
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Jiang J, Zhang Y, Liao X J, et al. Kinetics study of high hydrostatic pressure processing on polyphenol oxidase from Raspberry [J]. Science and Technology of Food Industry, 2010, 31(11): 127-129. (in Chinese) 江俊, 张燕, 廖小军, 等. 高静压钝化树莓多酚氧化酶的动力学分析 [J]. 食品工业科技, 2010, 31(11): 127-129. Han Y B, Liu G L, Feng L, et al. Effect of high hydrostatic pressure and browning inhibitors on polyphenoloxidase activity in Yam puree [J]. Food Science, 2005, 26(5): 111-115. (in Chinese) 韩永斌, 刘桂林, 冯莉, 等. 高静压和酶抑制剂对山药泥中多酚氧化酶活性的影响 [J]. 食品科学, 2005, 26(5): 111-115. Weemaes C A, Cordt S V, Ludikhuyze L R, et al. Influence of pH, benzoic acid, EDTA, and glutathione on the pressure and/or temperature inactivation kinetics of mushroom polyphenoloxidase [J]. Biotechnol Prog, 1997, 13: 25-32. Aydemir T. Partial purification and characterization of polyphenol oxidase from artichoke (Cynara scolymus L. ) heads [J]. Food Chem, 2004, 87: 59-67. Jiang Y M, Zauberman G, Fuchs Y. Partial purification and some properties of polyphenol oxidase extracted from litchi fruit pericarp [J]. Postharvest Biol Tech, 1997, 10: 221-228. Xiao H R, Wang Z F, Yang H, et al. Studying on the interaction between Zn2+ and polyphenol oxidase from apple [J]. Journal of Anqing Teachers College(Natural Science Edition), 2009, 15(2): 67-71. (in Chinese) 肖厚荣, 王中风, 杨红, 等. Zn2+与苹果多酚氧化酶相互作用研究 [J]. 安庆师范学院学报自然科学版, 2009, 15(2): 67-71. Gao Z J, Han X H, Xiao X G. Purification and characterisation of polyphenol oxidase from red Swiss chard (Beta vulgaris subspecies cicla) leaves [J]. Food Chem, 2009, 117: 342-348. Sanitation and Antiepidemic Station, Jiangsu Province, China. GB 14880-1994 Hygienic standard for the use of nutritional fortification substances in foods [S]. Beijing: China Standard Press, 1994. (in Chinese) 江苏省卫生防疫站. GB 14880-1994 食品营养强化剂使用卫生标准 [S]. 北京: 中国标准出版社, 1994. Zhao G Y, Li C Y, Zhang P Q, et al. Effect of high pressure and heating synergy on content of polyphenols and VC in fresh apple juice [J]. Food Machinery, 2007, 23(4): 34-37. (in Chinese) 赵光远, 李春艳, 张培旗, 等. 热协同高压处理对鲜榨苹果汁中酚类和Vc的影响 [J]. 食品与机械, 2007, 23(4): 34-37. Zeng Q M, Pan J, Xie H M, et al. 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. (in Chinese) 曾庆梅, 潘见, 谢慧明, 等. 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. Jiang Y. Purification and some properties of polyphenol oxidase of longan fruit [J]. Food Chem, 1999, 66: 75-79. Motoda S. Purification and characterization of polyphenol oxidase from Trametes sp. MS39401 [J]. J Biosci Bioeng, 1999, 87(2): 137-143. Feng W, Wang M, Cao J, et al. Regeneration of denatured polyphenol oxidase in Toona sinensis (A. Juss. ) Roam [J]. Process Biochem, 2007, 42: 1155-1159. Sun N, Lee S, Song K B. Effect of high pressure treatment on the molecular properties of mushroom polyphenoloxidase [J]. LWT-Food Sci Technol, 2002, 35(4): 315-318.
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