Results 231 to 240 of about 8,233 (250)

EPR Spectroskopy of Dog-Rose Polyphenoloxidase

1997
Polyphenoloxidase(PPO) of dog-rose fruit was extracted and purified through (NH4)(2)SO4 precipitation and dialysis. The optimum conditions for this purpose, i.e., pH and temperature, were determined with 4-methylcatechol optimum pH and temperature and found to be pH 8.5 and 20 degrees C, respectively.
Kufrevioglu, I, NUHOGLU, C, Sakiroglu, Halis, YOGURTCU, YK, UCUN, F, AYYILDIZ, Eyüp   +5 more
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Characterization of Polyphenoloxidase from Stanley Plums

Journal of Food Science, 1992
ABSTRACT Five plum cultivars were investigated for polyphenoloxidase. Stanley cultivar, which showed highest PPO activity, was selected for characterization of this enzyme. The activity of crude enzyme was 3.5 times greater in the flesh than in the skin of the fruit. The enzyme showed a K m
M. SIDDIQ, N. K. SINHA, J. N. CASH
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Strawberry Polyphenoloxidase: Extraction and Partial Characterization

Journal of Food Science, 1990
ABSTRACT Mixing strawberries ground under liquid nitrogen with polyvinylpyrrolidone alone or combined with Amberlite XAD‐4 in pH 4.5 buffer yielded stable polyphenoloxidase (PPO) extracts. Temperature stability of the enzyme varied with substrate and followed first order kinetics of inactivation.
PEDRO WESCHE‐EBELING, MORRIS W. MONTGOMERY   +1 more
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Purification of polyphenoloxidase from coffee fruits

Food Chemistry, 2003
Abstract Polyphenoloxidase (PPO) was purified from coffee beans at the pinhead stage. Purification was carried out by precipitation of contaminating proteins with 30% (NH4)2SO4, dialysis of the supernatant and chromatography on phenyl sepharose and DEAE columns. A purification factor of 364 was obtained.
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Polyphenoloxidase enzymes from wood-inhabiting Hyphomycetes.

Česká Mykologie, 1971
Oxidase tests were applied to 35 wood-inhabiting saprophytic Hyphomycetes to determine their ability to produce polyphenoloxidase enzymes. Most produced laccase, some tyrosinase, and a few peroxidase. The presence of these enzymes, especially tyrosinase, has taxonomic significance. This is the first report of such enzymes in Hyphomycetes.
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An experiment in enzyme characterization: Banana polyphenoloxidase

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

2000
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Characterization of polyphenoloxidase from pepper seed

40th Congress of the Federation-of-European-Biochemical-Societies (FEBS) - The Biochemical Basis of Life -- JUL 04-09, 2015 -- Berlin ...
Guven, R. Gul, Guler, C., Aslan, N., Guven, K., Dogru, M.   +4 more
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[Polyphenoloxidases].

Naunyn-Schmiedebergs Archiv fur experimentelle Pathologie und Pharmakologie, 2004
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