scholarly journals Fatty Acids analysis and Antioxidant activity of Fixed oil of Quercus Infectoria, Grown in Jordan

2018 ◽  
Vol 34 (3) ◽  
pp. 1368-1374 ◽  
Author(s):  
Zaha A. El-Agbar ◽  
Rajashri R. Naik ◽  
Ashok K. Shakya
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Fatty Acids Analysis ◽  
Quercus Infectoria

scholarly journals Antioxidant, Antimicrobial Activities and Fatty Acid Components of Flower, Leaf, Stem and Seed of Hypericum scabrum

2011 ◽  
Vol 6 (11) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Ali Shafaghat
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Hexane Extracts ◽  
Hypericum Scabrum ◽  
Different Parts

The hexane extracts of flower, leaf, stem, and seed of Hypericum scabrum, which were collected from northwestern Iran, were obtained by extraction in a Soxhlet apparatus. The fatty acids were converted to methyl esters and determined by gas chromatography/flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS) systems. The hexane extract from the flower, leaf, stem, and seed contained 39.1%, 43.2%, 29.0%, and 37.6% of omega-3 fatty acids, respectively. The other main components of the flower extract were tetracosane (12.2%) and palmitic acid (9.3%), and that of the leaf extract was palmitic acid (7.4%). The stem and seed extracts contained bis(2-ethylhexyl)phthalate (18.7% and 35.7%), nonacosane (11.7% and 3.9%) and linoleic acid (6.5% and 6.9%) as major components. The hexane extracts of different parts from H. scabrum represent an important source of omega-3 fatty acids in several Hypericum species. The antioxidant activity of all hexane extracts was evaluated by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method. The results indicate that hexane extracts from different parts of H. scabrum possess considerable antioxidant activity. The highest radical scavenging activity was detected in seed, which had an IC50 = 165 μg/mL. The antimicrobial activity of the extracts of those samples were determined against seven Gram-positive and Gram-negative bacteria ( Bacillus subtilis, Enterococcus faecalis, Staphylococcus aureus, S. epidermidis, Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae), as well as three fungi ( Candida albicans, Saccharomyces cerevisiae, and Aspergillus niger). The bioassay showed that the oil exhibited moderate antimicrobial activity. This study reveals that the all parts of this plant are attractive sources of fatty acid components, especially the essential ones, as well as of effective natural antioxidants.

scholarly journals COMPOSITION OF BIOLOGICALLY ACTIVE SUBSTANCES OF THE HORSE CHESTNUT (AECULUS HIPPOCASTANUM L.)

ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 33-39
Author(s):  
V.P. Kurchenko ◽  
◽  
N.V. Sushinskaya ◽  
K.I. Maiorava ◽  
E.I. Tarun ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Horse Chestnut ◽  
Hazard Class ◽  
Active Substances

The study of the composition of biologically active substances, alcoholic extracts from flowers of Aeculus hippocastanum L. According to the results of HPLC-MS and GC-MS analyzes, the extract contains the main amounts of phenolic compounds: quercetin, epicatechin, kaempferol. In addition, the extract contains fatty acids and their esters, alcohols, 3-deoxy-d-manno lactone, 1,2,3,5-cyclohexantethrol, α-methyl-mannofuranoside, γ sitosterol. Antioxidant activity of an extract from flowers of A. hippocastanum is associated with the peculiarities of the compositionof biologically active substances. The toxological-hygienic assessment of flowers of this species in acute and subacute experiments showed that it belongs to the 4th hazard class (low hazard).

Phospholipids fatty acids analysis of microbial communities in sewage sludge composting with inorganic bulking agent

2016 ◽  
Vol 57 (56) ◽  
pp. 27181-27190 ◽  
Author(s):  
Chuandong Wu ◽  
Wei Wang ◽  
Ke Wang ◽  
Xiangkun Li ◽  
Wei Qiu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sewage Sludge ◽  
Microbial Communities ◽  
Bulking Agent ◽  
Fatty Acids Analysis ◽  
Sludge Composting

Phenolic Compounds, Antioxidant Activity, Fatty Acids and Volatile Profiles of 18 Different Walnut (Juglans regia L.) Cultivars and Genotypes

2022 ◽  
Author(s):  
Volkan Okatan ◽  
Muhammet Ali Gündeşli ◽  
Nesibe Ebru Kafkas ◽  
Şule Hilal Attar ◽  
İbrahim Kahramanoğlu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Juglans Regia ◽  
Volatile Profiles

scholarly journals Ability of phenolic acids to protect naturally present alfa-tocopherol during the heating of plant oils  

2012 ◽  
Vol 30 (No. 4) ◽  
pp. 351-357 ◽  
Author(s):  
Z. Réblová ◽  
J. Fišnar ◽  
D. Tichovská ◽  
M. Doležal ◽  
K. Joudalová
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Phenolic Acids ◽  
Sunflower Oil ◽  
Phenolic Acid ◽  
Half Life ◽  
Tocopherol Content ◽  
Plant Oils ◽  
Hot Plate ◽  
Experimental Conditions

The ability of phenolic acids (ferulic, gallic, protocatechuic, and sinapic; 600 mg/kg) to protect naturally present a-tocopherol was tested during the heating of sunflower oil on a hot plate set at 120, 150, 180, 210, or 240°C, and during the heating of rapeseed, olive and soybean oils on a hot plate set at 180°C. In all the studied conditions, a-tocopherol was significantly protected only by gallic acid. This phenolic acid prolonged the half-life of a-tocopherol (calculated as the time needed for the a-tocopherol content to decrease to 50% of the original value) typically two- to four-fold. Hence the ability of phenolic acids to protect a-tocopherol in bulk oils does not markedly depend on the experimental conditions as is seen in antioxidant activity, i.e. in the ability of antioxidants to protect fatty acids.  

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