Fatty acid profile and in vitro antioxidant and antibacterial activities of red grape (Vitis vinifera L. cvs. Oküzgözü and Boğazkere) Marc extracts.
The marcs of two red grape (V. vinifera L.) varieties (Boğazkere and Oküzgözü), grown in eastern Anatolia (Elazig), were evaluated for their fatty acid composition, and antioxidant and antibacterial activities. The hexane extracts of both varieties were found to contain linoleic, palmitic, stearic and oleic acids by GC-MS analyses. The major fatty acid (linoleic acid) was detected relatively as 57.13% in Oküzgözü and 59.07% in Bogazkere in methylated hexane extracts. In addition, myristic and palmitoleic acids were observed in Boğazkere as minor components. The free radical (DPPH) scavenging activity of Oküzgözü was higher than that of Bogazkere. The IC50 values were calculated as 403.0 +/- 7.8 microg/mL for Oküzgozü and 552.0 +/- 23.6 microg/mL for Bogazkere. The extracts were found to be effective on the four gram (+) and four gram (-) test bacteria, but not as good as standard antibiotic, gentamycine by MIC method.
Department of Chemistry, Ege University, 35100, Izmir, Turkey.
Bilge
B
Cibik
Zuhal
Z
Ozaydin
Nazli
N
Böke
Ulkü
U
Karabay
Murat
M
Pekmez
Nazhi
N
Arda
Süheyla
S
Kirmizigüla
D000900:Anti-Bacterial Agents / Q000032:analysis*; D000975:Antioxidants / Q000032:analysis*; D001713:Biphenyl Compounds; D005227:Fatty Acids / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006586:Hexanes; D020128:Inhibitory Concentration 50; D010851:Picrates; D014421:Turkey; D027843:Vitis / Q000737:chemistry*
D000900:Anti-Bacterial Agents; D000975:Antioxidants; D001713:Biphenyl Compounds; D005227:Fatty Acids; D006586:Hexanes; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl