Abstract Book - 3rd International Symposium on Medicinal Plants ...

leaves, the contents of phenolics and flavonoids exhibited good correlation with antioxidant activity
and antibacterial against three bacteria Escherichia coli, Klebsiella pneumoniae and Salmonella
typhimurium. However, a non-significant correlation was found between those compounds and the
inhibition growth of Pseudomonas aeruginosa.
Key words: Bioactive molecules extraction, olive leaves, optimization, Swebea elgia.
3.49 Flavonoids from the Andemic Plant Henophyto deserti
Smadi Abla 1 , Bitam Fatma 1 , Ciavatta Maria Letizia 2 , and Dridi, Seloua 1
1 Faculté des sciences, département de Chimie, Université de Batna, Batna 05000, Algérie. 2
Istituto di Chimica Biomolecolare, C.N.R., Via Campi Flegrei 34, I-80078 Pozzuoli, Naples,
Italy.
<strong>Abstract</strong>: The Brassicaceae family is one of the largest families in the plant kingdom and it
contains many medicinal plants. It includes about 19 tribes, 350 genera and more than 3500
species. Many of the Brasssicaceae plants serve as a source of food and condiment such as
cabbage turnip radish and mustard. All of them contained unusual flavonoids and glucosinolates.
Flora of Algeria appears to be a rich and interesting source for supplementary ethnomedicinal and
phytochemical studies. Henophyto deserti is an endemic plant found in north Algerian Sahara
commonly known as Hannet l'ibel, this shrub has great potentialities to provide different products
and services as forage, traditional medicine, halting desert encroachment and stabilizing sand
dunes. The seeds and leaves of these plants are usually prepared and used to treat digestive
problems, arthritis, colds and flu, fevers, irritability, and scorpion bites. To the best to our
knowledge, very few chemical studies have been reported from this species. The phytochemical
investigation of the ethyl acetate extract of the aerial parts of this plant yielded two flavonoids
glycosides and two steroids. The characterization of the compounds was achieved by various
spectroscopic methods mainly 1 H NMR, 13 C NMR and mass spectrometry.
Key words: Brassicaceae, flavonoids glycosides, Henophyto deserti, steroids.
3.50 Chemical Composition and Antimicrobial Activity of the Essential Oils
of Senecio perralderianus, An Endemic Species of Algeria
T. Lograda 1 , M. Ramdani 1 , J. C. Chalchat 2 , P. Chalard 2 and G. Feguiredo 3
1 Laboratory of Natural Resource Valorization, Sciences Faculty, Ferhat Abbas University, 19000
Setif, Algeria. 2 Ecole nationale Supérieure de Chimie de Clermont Ferrand, Laboratoire de Chimie
des Hétérocycles et des glucides, EA987, 63174 Aubière Cedex 01. 3 LEXVA Analytique, 460 rue
du Montant, 63110 Beaumont, France.
<strong>Abstract</strong>: The aim of the present study is to investigate the antimicrobial activity of the essential
oil prepared from aerial parts of the Algerien endemic Senecio perralderianus Coss. & Dur.
(Asteraceae). The dried-in-shade at ambient temperature aerial parts of the plant were hydrodistilled
for 3h, using a modified Clevenger-type apparatus. The extract is analysed by gas
chromatography-mass spectrometry. 50 compounds were identified, constituting over 96.1%, of
total oil composition. The main compounds in the essential oils of S. perralderianus were γ-
cadinene (15.3%), α-pinene (8.8%), D-germacrene (5.8%), α-caryophyllene (5.5%) and γ-eudismol
(4.9%). In vitro antibacterial studies were carried out against four bacteria strains and Candida
albicans. The antimicrobial activity of the essential oil was carried out with the disc diffusion
method. The results indicated that the essential oil remarkably inhibited the growth of tested
microorganisms except Candida albicans.
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