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Croatian journal of food science and technology, Vol. 4 No. 1, 2012.

Izvorni znanstveni članak

Antioxidant and antimicrobial activity of extracts obtained from rosemary (Rosmarinus officinalis) and vine (Vitis vinifera) leaves

Helena Abramovič orcid id orcid.org/0000-0001-6356-2068 ; University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia
Petra Terpinc ; University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia
Ivana Generalić ; University of Split, Faculty of Chemistry and Technology, Teslina 10, 21000 Split, Croatia
Danijela Skroza ; University of Split, Faculty of Chemistry and Technology, Teslina 10, 21000 Split, Croatia
Anja Klančnik ; University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia
Višnja Katalinić ; University of Split, Faculty of Chemistry and Technology, Teslina 10, 21000 Split, Croatia
Sonja Smole Možina ; University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia

Puni tekst: engleski pdf 146 Kb

str. 1-8

preuzimanja: 4.864

citiraj

Sažetak

The antioxidant properties and antimicrobial activity of rosemary extracts were compared to those of vine leaf extracts. The phenolics were quantified by HPLC. Rosemary extracts were stronger in reducing power than vine leaf extracts but possessed weaker superoxide anion radical (O2•−) scavenging capability. The antimicrobial activity was confirmed by the broth microdilution test using minimal inhibitory (MIC) concentrations against gram-positive (Staphylococcus aureus, Bacillus cereus, Listeria monocytogenes) and gram-negative bacteria (Campylobacter jejuni, Salmonella Infantis, Escherichia coli O157:H7). The kinetics of survival was assessed using the broth macrodilution method. The study confirmed the stronger antibacterial activity of rosemary extracts, especially against gram-positive bacteria and C. jejuni. The antioxidant and antimicrobial activity of vine leaf extracts did not correlate with their contents of flavan-3-ols and flavonols. For rosemary extracts the absence of a correlation between their activities and the content of carnosic acid suggests that protective efficiency is achieved through interactions among phenolic constituents.

Ključne riječi

rosemary extracts; vine leaf extracts; antioxidant activity; antimicrobial activity

Hrčak ID:

84714

URI

https://hrcak.srce.hr/84714

Datum izdavanja:

19.7.2012.

Posjeta: 6.531 *