Results 141 to 150 of about 1,069 (177)

Transient kinetic studies of dopa oxidation by polyphenoloxidase

Biochimica et Biophysica Acta (BBA) - Enzymology, 1971
The oxidation of DOPA (o-dihydroxyphenylalanine) to dopachrome as catalyzed by polyphenoloxidase (o-diphenol:O2 oxidoreductase, EC 1.10.3.1., also called tyrosinase) has been followed in transient-state experiments. The progress of the reaction depends on the wavelength of observation and in the spectral region where dopachrome is the major ...
D, Kertesz, M, Brunori, R, Zito, E, Antonini   +3 more
openaire   +2 more sources

Different modes of inhibition for organic acids on polyphenoloxidase

Food Chemistry, 2016
It is still unclear whether the inhibitory effect of organic acid on polyphenoloxidase (PPO) is due to the reversible inhibition or decrease of pH. In this study, cinnamic acid, citric acid and malic acid inhibited PPO in different modes. Results showed that the inhibition by cinnamic acid resulted from reversible inhibition, while the decrease of pH ...
Lei, Zhou, Wei, Liu, Zhiqiang, Xiong, Liqiang, Zou, Jun, Chen, Junping, Liu, Junzhen, Zhong   +6 more
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Polyphenoloxidase and the Respiration of Ivy Leaves

Journal of Experimental Botany, 1954
SUMMARY 1. Polyphenoloxidase is present in ivy leaves but not in those of Aucuba or Euonymus. 2. Respiration of intact ivy leaves was markedly stimulated by catechol (R.Q. approximately = i), gallic acid, caffeic acid, and dihydroxyphenylalanine. The stimulation was not related to injury as far as could be detected and was not followed by inhibition ...
openaire   +1 more source

Study on the Barley and Malt Polyphenoloxidase. II. Characterization of Barley and Steeped Barley Polyphenoloxidase

Journal of the American Society of Brewing Chemists, 1978
N. Van Huynh, J. Jerumanis
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An experiment in enzyme characterization: Banana polyphenoloxidase

Biochemical Education, 1975
MICHAEL C ARCHER, JAMES K PALMER
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Polyphenoloxidase

2000
openaire   +1 more source

Mushroom ( Agaricus bisporus ) polyphenoloxidase inhibited by apigenin: Multi-spectroscopic analyses and computational docking simulation

Food Chemistry, 2016
Shengfeng Peng, Liqiang Zou, Jun Chen
exaly  

Characterization of polyphenoloxidase of prawns (Penaeus japonicus). Alternatives to inhibition

Food Chemistry, 2001
Miriam Perez-Mateos
exaly  

Activation and alteration of plant and fungal polyphenoloxidase isoenzymes in sodium dodecylsulfate electrophoresis

Phytochemistry, 1984
William H Flurkey
exaly  

On the Role of Polyphenoloxidase in Lignin Biosynthesis

Journal of the American Chemical Society, 1955
H. S. Mason, M. Cronyn
openaire   +1 more source