@article {1390, title = {Antibacterial and Antioxidant Activities of Ethanol Extracts of Some Plants Selected from South Jordan}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {March 2021}, pages = {528-534}, type = {Research Article}, chapter = {528}, abstract = {

Three Jordanian medicinal plants; Peganum harmala (P. harmala), Geropogon hybridus (G. hybridus), and Salvia officinalis (S. officinalis) were selected from Al-karak region in order to investigate their antibacterial and antioxidant activities. The crude extract yield of all used plants were varied from 10.6\% in Salvia officinalis and 15.6\% in P. harmala, to 18 \% in G. hybridus. The antibacterial activity of these plants was carried out on four bacterial strain (S. aureus, E.coli, E. aerogenes and B. subtilis). These plant ethanol extracts have effects on the gram positive strains and gram negative bacteria except S. officinalis did not show activity against E. Coli. The minimal inhibition concentration (MIC) of P. harmala S. officinalis and G. hybridus (MIC) ranged from 125 μg/ml to 500 μg/ml. The ethanol crude extract of G. hybridus gave 10 fractions using TLC method, fraction 1,3 and 10 exhibited antibacterial activity against all bacterial strains. Their total phenolic contents were evaluated; the highest total phenol content was observed in G. hybridus with 410 mgGAE/g plant extract followed by P. harmala and S. officinalis with 305 and 203.7 mg/g plant extract, respectively. The antioxidant activity was estimated by using DPPH method. The highest antioxidant activity was obtained with G. hybridus extract and found to be 0.89 mg Trolox/g plant extract. The lowest antioxidant activity was obtained with S. officinalis which was 0.53 mg Trolox/g plant extract. The lowest IC50 (highest antioxidant activity) was observed in G. hybridus with 0.83 mg/ml. Intermediate effect observed in P. harmala with IC50 1.1 mg/ml. The lowest antioxidant activity was obtained in S. officinalis with IC50 1.38 mg/ml.

}, keywords = {Antibacterial, Antioxidant, Ethanol extracts, Peganum harmala}, doi = {10.5530/pj.2021.13.66}, author = {Waleed Khaled Al ani and Ali Abdallah Alqudah and Khaled. A. Tarawneh} } @article {124, title = {Comparative Study of Antioxidant Activity of Ethanol and Aqueous Extracts of Different Parts of Nyctanthes Arbor-tristis Linn.}, journal = {Pharmacognosy Journal}, volume = {8}, year = {2016}, month = {December 2015}, pages = {113-116}, type = {Original Article}, chapter = {113}, abstract = {

Background: Antioxidants play a major role in curing degenerative disease. In present time many synthetic antioxidants are commonly used but due to their toxic and carcinogenic effects, their use has been restricted. So the search for natural antioxidants is important. Studies on natural compounds is of interest due to their satisfactory health benefits with low toxicity. Objective: The antioxidant activity of ethanol and aqueous extract of shoot, seed and leaf of an important medicinal tree Nyctanthes arbor-trist is (Harsingar) were evaluated by DPPH scavenging antioxidant assays. Materials and Methods: Different concentrations 25, 50, 75, 100\% of the aqueous and ethanol extracts were prepared with standard solutions (ascorbic acid 0.01, 0.03, 0.05, 0.07, 0.09, 0.1 mg/ml). To 1.5 ml solution of DPPH (0.1 mM), 0.5 ml of various concentrations of the extract and standard were added. Results: In the present study a comparative evaluation of antioxidant activity of seed, shoot and leaf of Nyctanthes arbor-tristis Linn was performed for their aqueous and ethanol extracts. Ethanol and aqueous extracts of shoot revealed more antioxidant activity then seed and leaf. Conclusion: All aerial parts of Nyctanthes arbor-tristis Linn possess antioxidant activity. The plant may be functioned out for its anticancerous properties in future.

}, keywords = {antioxidant activity, Aqueous extract, DPPH assay, Ethanol extracts, Nyctanthes arbor-tristis Linn.}, doi = {10.5530/pj.2016.2.3}, author = {Saraswati Patel and Mamta Gokhale} }