Within individual polyphenols (þ)-catechin, neochlorogenic
acid and quercetin-3-rutinoside contents presented no significant
differences within treatments. The effect of pasteurization was
determined on fresh and frozen samples and compared with results
obtained before pasteurization. Chlorogenic acid content increased
38% after pasteurization of fresh peach and after pasteurization of
frozen peach increased 24%. Breaking of cell membranes by
freezing release enzymes, and this could lead to the formation of
other physiological compounds. Cano, Lobo, and De Ancos (1998)
observed that, freezing process produces a significant increase
solubility of some peroxidase fractions linked to cellular membranes
such as polyphenol oxidase and peroxidase, which use
chlorogenic acid as a substract.
Within individual polyphenols (þ)-catechin, neochlorogenicacid and quercetin-3-rutinoside contents presented no significantdifferences within treatments. The effect of pasteurization wasdetermined on fresh and frozen samples and compared with resultsobtained before pasteurization. Chlorogenic acid content increased38% after pasteurization of fresh peach and after pasteurization offrozen peach increased 24%. Breaking of cell membranes byfreezing release enzymes, and this could lead to the formation ofother physiological compounds. Cano, Lobo, and De Ancos (1998)observed that, freezing process produces a significant increasesolubility of some peroxidase fractions linked to cellular membranessuch as polyphenol oxidase and peroxidase, which usechlorogenic acid as a substract.
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