[Determination of polyphenolic complex in wines by electrochemical methods and using the enzymes tyrosinase and laccase].
Several red wines were studied to find a correlation between physicochemical parameters characterizing the antioxidant status of wine and total content of phenols in samples. The content of dissolved oxygen (its value varied from 0.75 to 3.28 mg/ml), pH (3.10-3.63), redox potential (-186 to -106 mV), mass concentration of free and total sulfur dioxide (10-30 and 36-200 mg/dm3, respectively), absorption spectra, and total phenol content were determined. The wines fell into two main groups-with a relatively low (1850-2050 mg/dm3) and high (2300-2900 mg/dm3) contents of polyphenols. It was demonstrated that physicochemical parameters (except for the content of sulfur dioxide) correlate with the total phenol content in the wines studied.
Shleev
S V
SV
Bach Institute of Biochemistry, Russian Academy of Sciences. Leninskii pr. 33, Moscow, 119071 Russia.
Chekanova
S A
SA
Koroleva
O V
OV
Stepanova
E V
EV
Telegin
Iu A
IuA
Sen'kina
Z E
ZE
D000975:Antioxidants / Q000032:analysis; D015374:Biosensing Techniques; D004563:Electrochemistry; D005419:Flavonoids / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D042845:Laccase; D014442:Monophenol Monooxygenase; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis; D010636:Phenols / Q000032:analysis*; D059808:Polyphenols; D013458:Sulfur Dioxide / Q000032:analysis; D014920:Wine / Q000032:analysis* / Q000592:standards
D000975:Antioxidants; D005419:Flavonoids; D010636:Phenols; D059808:Polyphenols; D013458:Sulfur Dioxide; D042845:Laccase; D014442:Monophenol Monooxygenase; D010100:Oxygen