Chemical compositions, antioxidant and antimicrobial activity of the essential oils of Piper officinarum (Piperaceae).

Nat Prod Commun 2012 Dec;7(12):1659-62

Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, 81310 Johor Bahru, Johor, Malaysia.

This study was designed to investigate the antioxidant and antimicrobial activities of the essential oils from Piper officinarum C. DC. GC and GC/MS analysis of the leaf and stem oils showed forty one components, representing 85.6% and 93.0% of the oil, respectively. The most abundant components in the leaf oil were beta-caryophyllene (11.2%), alpha-pinene (9.3%), sabinene (7.6%), beta-selinene (5.3%) and limonene (4.6%), while beta-caryophyllene (10.9%), alpha-phellandrene (9.3%), linalool (6.9%), limonene (6.7%) and alpha-pinene (5.0%) were the main components of the stem oil. The antioxidant activities were determined by using complementary tests: namely beta-carotene-linoleic acid, DPPH radical scavenging and total phenolic assays. The stems oil showed weak activity (IC50 = 777.4 microg/mL) in the DPPH system, but showed moderate lipid peroxidation inhibition in the beta-carotene-linoleic acid system (88.9 +/- 0.35%) compared with BHT (95.5 +/- 0.30%). Both oils showed weak activity against P. aeruginosa and E. coli with M IC values of 250 microg/mL.

Download full-text PDF

Source
December 2012

Publication Analysis

Top Keywords

piper officinarum
8
beta-carotene-linoleic acid
8
oils piper
8
essential oils
8
antioxidant antimicrobial
8
weak activity
8
determined complementary
4
stem oil
4
activities determined
4
antioxidant activities
4
oil antioxidant
4
tests beta-carotene-linoleic
4
scavenging total
4
total phenolic
4
radical scavenging
4
dpph radical
4
components stem
4
acid dpph
4
complementary tests
4
alpha-pinene 50%
4

Similar Publications