Caroline Magnani

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Luminometric methods show that melanosomes in liver pigment cells of Rana esculenta L. have endogenous ATP and ATPase activity. The Km value of ATPase is 0.42 x 10(-8) mol/l at pH 7.0. Inhibition of ATPase by antimycin and by ouabain is not effective. In the presence of an excess of ADP and Pi, ATP synthesis was observed.
Phenolic compounds are abundant in the Brazilian plant kingdom and they are part of a large and complex group of organic substances. Cinnamic acids are part of this group of organic compounds, and caffeic acid is one of its representatives. Besides exhibiting a powerful antioxidant activity, increasing the collagen production and preventing the premature(More)
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