Antioxidant and Free Radical-Scavenging Potential of Essential Oil from E nteromorpha linza  L. Prepared by Microwave-Assisted Hydrodistillation

2015 ◽  
Vol 39 (1) ◽  
pp. 80-90 ◽  
Author(s):  
Jayanta Kumar Patra ◽  
Sung Hong Kim ◽  
Kwang-Hyun Baek
Keyword(s):  
Free Radical ◽  
Essential Oil ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Microwave Assisted

MICROWAVE-ASSISTED SEED ESSENTIAL OIL OF ELEUTHEROCOCCUS SENTICOSUS AND ITS ANTIOXIDANT AND FREE RADICAL-SCAVENGING ACTIVITIES

2012 ◽  
Vol 37 (1) ◽  
pp. 119-127 ◽  
Author(s):  
VIVEK K. BAJPAI ◽  
AJAY SHARMA ◽  
SUNG HONG KIM ◽  
YONGHO KIM ◽  
JONG-JOO KIM ◽  
...  
Keyword(s):  
Free Radical ◽  
Essential Oil ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Eleutherococcus Senticosus ◽  
Microwave Assisted ◽  
Free Radical Scavenging Activities

scholarly journals Free radical scavenging capacity, antibacterial activity and essential oil composition of turmeric (Curcuma domestica) varieties grown in Ethiopia

Heliyon ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. e06239
Author(s):  
Belay Haile Kebede ◽  
Sirawdink Fikreyesus Forsido ◽  
Yetenayet B. Tola ◽  
Tessema Astatkie
Keyword(s):  
Antibacterial Activity ◽  
Free Radical ◽  
Essential Oil ◽  
Radical Scavenging ◽  
Essential Oil Composition ◽  
Free Radical Scavenging ◽  
Oil Composition ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity

scholarly journals Composition and biological assays of the leaf essential oil of Asparagus flagellaris (Kunth) Bak

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Oluwakayode O. Odeja ◽  
Michael Gabriel Ibok ◽  
Ejike O. Okpala
Keyword(s):  
Free Radical ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Salmonella Typhi ◽  
Antimicrobial Activities ◽  
Free Radical Scavenging ◽  
Gas Chromatography Mass Spectrometry ◽  
Klebsiella Pneumonia ◽  
Leaf Essential Oil

Abstract Background Asparagus flagellaris leaves are ethnomedicinally used to treat syphilis, gonorrhea and other sexually transmitted diseases (STDs), with no reports on the volatile constituents. This study was aimed to quantitatively and qualitatively characterise the composition of essential oil, evaluates the free radical scavenging and antimicrobial capacity of the essential oil. Methods The essential oil was isolated by hydrodistillation method using all-glass Clevenger-type apparatus, while the identification and quantification of constituents were performed by gas chromatography-mass spectrometry (GC-MS) technique. The antioxidant activity on 2, 2-diphenyl-1-picrylhydrazyl (DPPH) was evaluated and the oil was also tested against 10 strains of microorganisms consisting of 6 bacteria: Escherichia coli, Salmonella typhi, Klebsiella pneumonia, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus subtilis and 4 fungi: Candida albicans, Penicillium notatum, Aspergillus niger and Rhizopus spp. using broth dilution and surface plate methods, respectively. Results A pale yellow essential oil with a characteristic scent was obtained, with a yield of 0.80% (w/w). A total of 28 compounds accounting for 97.41% of the total oil contents were identified. The oil was predominated by Thymol and its derivatives, accounting for 57.48%. The most abundance (% area) constituents of the essential oil were 5-Thymyl tiglate (18.49%), Thymyl-2-methyl butyrate (17.34%), Thymol hydroquinone dimethyl ether (10.52%), Thymol methyl ether (9.42%) and 5-Propyl-1, 3-benzodioxole (4.59%). The essential oil showed a significant free radical scavenging activity compared to the standard antioxidant drugs used in this study, with % inhibition varying from 88.06 ± 0.0001 to 93.05 ± 0.0006. The leaf essential oil exhibited antimicrobial activity on all the tested organisms at 500–125 μg/mL, with an 18–10 mm inhibitory zone. Conclusion The leaf essential oil of A. flagellaris contains notable chemical compounds responsible for its antioxidant and antimicrobial activities.

scholarly journals Chemical Composition, Free Radical Scavenging and Antimicrobial Activities of Essential Oil of Vahl

2016 ◽  
Vol 07 (1) ◽  
pp. 160-167 ◽  
Author(s):  
Patricia A. Onocha ◽  
Ganiyat K. Oloyede ◽  
Jamiu A. Akintola
Keyword(s):  
Free Radical ◽  
Chemical Composition ◽  
Essential Oil ◽  
Radical Scavenging ◽  
Antimicrobial Activities ◽  
Free Radical Scavenging

scholarly journals Chemical Composition of the Essential Oil of Ligularia hodgsonii and Free Radical Scavenging Activity of the Oil and Crude Extracts

2014 ◽  
Vol 9 (10) ◽  
pp. 1934578X1400901
Author(s):  
Zihao Zhou ◽  
Jun Tang ◽  
Xueping Song
Keyword(s):  
Free Radical ◽  
Chemical Composition ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Free Radical Scavenging ◽  
Total Oil ◽  
Lower Capacity ◽  
Free Radical Scavenging Activities

The chemical composition of the essential oil from roots and rhizomes of Ligularia hodgsonii was analyzed by gas chromatography (GC) and GC-mass spectrometry (MS). Forty-seven components were identified, representing 77.0% of the total oil. The main constituents were l-(+)-ascorbic acid 2,6-dihexadecanoate (15.7%), selina-6-en-4-ol (8.4%) and 9,10-dimethyl-1,2,3,4,5,6,7,8-octahydroanthracene (6.6%). The free radical scavenging activities of the essential oil, aqueous extract, ethanolic extract, and crude polysaccharides of L. hodgsonii, as well as some of their major components, were investigated using DPPH and ABTS assays. The essential oil displayed a lower capacity to quench free radicals than the extracts; the ethanolic and aqueous extracts showed considerably higher antioxidant potential that deserves further study.

Chemical composition and free radical-scavenging, anticancer and anti-inflammatory activities of the essential oil from Ocimum kilimandscharicum

Phytomedicine ◽  
2014 ◽  
Vol 21 (11) ◽  
pp. 1298-1302 ◽  
Author(s):  
V.T. de Lima ◽  
M.C. Vieira ◽  
C.A.L. Kassuya ◽  
C.A.L. Cardoso ◽  
J.M. Alves ◽  
...  
Keyword(s):  
Free Radical ◽  
Chemical Composition ◽  
Essential Oil ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Anti Inflammatory
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