Premium
Antioxidant activities of organic grape, pomace, juice, must, wine and their correlation with phenolic content
Author(s) -
Yıldırım Hatice K.,
Akçay Yasemin D.,
Güvenç Ulgar,
Altındişli Ahmet,
Sözmen Eser Y.
Publication year - 2005
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.2004.00921.x
Subject(s) - pomace , phenols , gallic acid , chemistry , food science , wine , antioxidant , organic chemistry
Summary The highest values of antioxidant activity (AOA), inhibition of low‐density lipoproteins (LDL‐diene, LDL‐MDA) and total phenols were determined in pomace (82.30 and 82.60%), grapes (68.91%) and must [2750 mg L −1 gallic acid equivalents (GAE)], respectively. For all parameters (AOA, iLDL‐diene, iLDL‐MDA, total phenols) the highest values were obtained in Cabernet Sauvignon and Merlot grape varieties. Positive correlations were determined between AOA and iLDL‐diene ( r = 0.809); AOA and total phenols ( r = 0.528); total phenols and iLDL‐diene ( r = 0.451) with significance of P < 0.005. The results of principal component analysis demonstrated that the location of iLDL‐diene and AOA is the same for pomace, must and red wines. The total phenols are found in the same place in red wines, red grapes, pomace and must. The results emphasize the importance of must, pomace and red wine for inhibiting LDL‐oxidation.