scholarly journals Efficacy of Essential Oils from Persea americana Stem Bark and Seed Extracts

2018 ◽  
Vol 01 (03) ◽  
Author(s):  
Oludare temitope Osuntokun ◽  
Akinola MO ◽  
Aladejana OM ◽  
Ogunlade AO
Keyword(s):  
Essential Oils ◽  
Stem Bark ◽  
Persea Americana ◽  
Seed Extracts

Chemical composition of root and stem bark essential oils from Ivorian Isolona dewevrei: structural elucidation of a new natural germacrone

2021 ◽  
pp. 1-7
Author(s):  
Didjour Albert Kambiré ◽  
Jean Brice Boti ◽  
Zana Adama Ouattara ◽  
Acafou Yapi Thierry ◽  
Nelly Barat ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Stem Bark ◽  
Structural Elucidation

scholarly journals Amburana cearensis: Pharmacological and Neuroprotective Effects of Its Compounds

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3394
Author(s):  
Juliana Helena Castro e Silva ◽  
Rafael Short Ferreira ◽  
Erica Patricia Pereira ◽  
Suzana Braga-de-Souza ◽  
Monique Marylin Alves de Almeida ◽  
...  
Keyword(s):  
Inflammatory Diseases ◽  
Biological Effects ◽  
Folk Medicine ◽  
Stem Bark ◽  
Northeastern Brazil ◽  
Glutamate Excitotoxicity ◽  
Neuroprotective Effects ◽  
Therapeutic Properties ◽  
Toxic Drugs ◽  
Seed Extracts

Amburana cearensis A.C. Smith is an endemic tree from Northeastern Brazil used in folk medicine as teas, decocts and syrups for the treatment of various respiratory and inflammatory diseases, since therapeutic properties have been attributed to compounds from its stem bark and seeds. Numerous pharmacological properties of semi-purified extracts and isolated compounds from A. cearensis have been described in several biological systems, ranging from antimicrobial to anti-inflammatory effects. Some of these activities are attributed to coumarins and phenolic compounds, the major compounds present in A. cearensis seed extracts. Multiple lines of research demonstrate these compounds reduce oxidative stress, inflammation and neuronal death induced by glutamate excitotoxicity, events central to most neuropathologies, including Alzheimer’s disease (AD) and Parkinson’s Disease (PD). This review focuses on the botanical aspects, folk medicine use, biological effects and pharmacological activities of A. cearensis compounds and their potential as novel non-toxic drugs for the treatment of neurodegenerative diseases.

scholarly journals Comparison of the Essential Oils of Leaves and Stem Bark from Two Different Populations of Drimys Winteri a Chilean Herbal Medicine

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Orlando Muñoz ◽  
Phlippe Christen ◽  
Silvian Cretton ◽  
Alejandro F. Barrero ◽  
Armando Lara ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Herbal Medicine ◽  
Essential Oils ◽  
Stem Bark ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Different Populations ◽  
Main Components ◽  
Chemical Groups ◽  
Drimys Winteri

The chemical composition of the essential oils obtained by hydrodistillation of stem bark and leaves of Drimys winteri J.R. et G. Foster var. chilensis /DC A. Gray ( Winteraceae) from Chiloe Island (ID) and Continental Chile (Santiago) (CD) were studied by GC and GC/MS. Sesquiterpene hydrocarbons constituted the main chemical groups in the stem bark oils, with α-santalene, trans-β-bergamotene and curcumenes as the major components. Monoterpenes constituted the main chemical groups in the leaves of Island plants with α-pinene (23.1%) β-pinene (43.6%) and linalool (10.5%) as the main components whereas sesquiterpenes (germacrene D 17.6%) and phenylpropanoids (safrole 20.8%) are the most abundant in the leaves of Continental plants.

scholarly journals Recovery of Iron Nanoparticles from Mine Wastewater Using Plant Extracts of Eucalyptus Globulus, Callistemon Viminalis and Persea Americana

Minerals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 859
Author(s):  
Lovasoa C. Razanamahandry ◽  
Assumpta C. Nwanya ◽  
Michael O. Akharame ◽  
Badeggi U. Muhammad ◽  
Seteno K.O. Ntwampe ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Plant Extracts ◽  
Eucalyptus Globulus ◽  
Solid Phase ◽  
Persea Americana ◽  
Precipitation Reaction ◽  
Mine Wastewater ◽  
Callistemon Viminalis ◽  
Seed Extracts

Mine wastewater (MW) is often rich in heavy metals that can have measurable effects on humans. The storage and treatment of MW remains a challenge for most mining companies. Iron (Fe) in MW was removed by using extracts from Eucalyptus globulus (EG); Callistemon viminalis (CV); and Persea americana (AS). Fe was removed from MW samples with an initial concentration of 5.53 mg Fe mL−1; 4.63 mg Fe mL−1 and 4.40 mg Fe mL−1 using EG leaves, CV flowers and AS seed extracts, respectively. Conditions of the MW decontamination were studied by varying the dosage of the plant extracts, the temperature of the medium and the contact time between the MW and the plant extracts. Undiluted plant extracts—which were mixed with the MW and heated at 45 °C for 3 h—gave the highest Fe-removal efficiency for CV (70%) and AS (53%) extracts, respectively. Similarly, EG extracts, albeit heated at 25 °C, showed a higher Fe-removal efficiency (85%) than the CV and AS extracts at low to high temperatures. The residual Fe concentration in the MW was 0.83 mg Fe mL−1, 1.39 mg Fe mL−1 and 2.07 mg Fe mL−1 for EG, CV and AS extracts, respectively. Residue solid-phase deposits from the precipitation reaction of the MW with the plant extracts were collected and analyzed. Fe was among the byproducts detected in the deposited material. The characterization of the annealed solid-phase deposits revealed Fe precipitates as maghemite-C (Fe2O3) and magnetite (FeFe2O4) nanoparticles. Therefore, the MW quality and form were improved, making it reusable for other purposes.

scholarly journals Constituents and Anthelmintic Activity Evaluation of Albizia Adiantifolia (Schumach) W.F. Wright Essential Oils FromNigeria

2018 ◽  
Vol 10 (2) ◽  
pp. 10 ◽  
Author(s):  
Akinsola Akande ◽  
Sherifat Aboaba ◽  
Guido Flamini
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Anthelmintic Activity ◽  
Stem Bark ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Root Bark ◽  
Dependent Manner ◽  
Caryophyllene Oxide ◽  
Significant Difference

Albizia adiantifolia (Schumach) W.F. Wright (Fabaceae) is a plant used traditionally in treating different health ailments which includes worm infections. The essential oils (EOs) were obtained by hydrodistillation in an all glass Clevenger apparatus, and characterized by gas chromatography (GC) and gas chromatography-mass spectrometry analysis (GC-MS). In vitro petri-dish anthelmintic activity was carried out using adult earthworm, Eudrilus eugeniae. The leaves, stem bark and root bark EOs afforded a total of 40, 26 and 20 constituents representing 90.9%, 94.1% and 90.9% of the total oil fractions respectively. The classes of compounds identified in the leaves, stem bark and root bark are oxygenated monoterpenes (4.1%, 1.7% and 4.0% respectively), sesquiterpene hydrocarbons (39.5%, 67.3% and 42.6% respectively), oxygenated sesquiterpenes (18.7%, 22.3% and 30.1% respectively), non-terpene derivatives (12.1%, 2.6% and 14.2% respectively) and apocarotenoids (16.5% and 0.2% in the leaves and stem-bark). β-caryophyllene (23.0%), E-geranylacetone (7.4%), acorenone (6.4%), viridiflorol (6.4%), α-zingiberene (6.3%) and ar-curcumene (4.6%) were the major constituents in the leaves oil, β-caryophyllene (39.3%), selin-11-en-4-α-ol (10.4%), α-zingiberene (9.6%), ar-curcumene (7.2%), caryophyllene oxide (6.4%) and α-humulene (5.6%) were the major constituents in the stem bark oil, while β-caryophyllene (32.1%), selin-11-en-4-α-ol (13.1%), caryophyllene oxide (8.4%), pentadecanal (6.1%) and α -humulene (4.4%) were the major constituents in the root bark oil. β -caryophyllene dominated the oils. The leaf EO was the most active against E. eugeniae worm. All the oils showed a relatively higher activity compared to Albendazole, in a concentration dependent manner. There was significant difference (p<0.001) in activity.

scholarly journals Assessment of in-vitro Antioxidant/Enzymes Inhibitory Potentials of Aframomum melegueta [Roscoe] K. Schum (Grains of Paradise) Leaf, Stem Bark, Seed Bark and Seed Extracts

2020 ◽  
pp. 40-57
Author(s):  
Oludare Temitope Osuntokun ◽  
V. O. Olumekun ◽  
A. O. Ajayi ◽  
I. O. Omotuyi ◽  
A. Olonisakin
Keyword(s):  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Free Radical ◽  
Reduced Glutathione ◽  
Research Work ◽  
Radical Scavenging ◽  
Stem Bark ◽  
Oh Radical ◽  
Seed Extracts

The purpose of this research work is to evaluates the in-vitro antioxidant and antioxidant enzymes inhibition potentials of Aframomum melegueta [Roscoe] K. Schum (Grains of Paradise) Leaf, Stem Bark, Seed Bark and Seed Extracts. Aframomum melegueta is a spice with a similar composition as Ginger, that belongs to the same Zingiberaceae family, used in Nigeria, West Africa and it is used for the treatment of infectious diseases such as urinary tract infections, cancer and diabetes. Antioxidants neutralize the effect of free radicals through different ways and may prevent the body from various diseases. The plant extract were collected from a rain forest in Akugba Akoko, Ondo state, Nigeria. The plant sample was dried, pulverized, filtered with Whatman No 1 filtered paper and the filtrates was concentrated in-vacuum using vacuum rotary evaporator at 40°C and was later concentrated to dryness in a hot-air oven at 40°C. Assessment of antioxidant potentials were performed using Singleton method Total flavonoids (mg/g), Phenol (mg/g), Ferric reducing (FRAP) potentials (mg/g), Free radical scavenging ability (DPPH) (1, 1- diphenyl-2-picryhydrazyl) potentials (%),2,2’-azino-bis(3-ethylbenthiazoline-6-sulphonic acid), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) scavenging potentials (mMol/g), Fe2+ chelation potentials (%) and OH Radical Scavenging potentials (%) were evaluated. Antioxidant enzymes of plant were assessed using Bentller method, Superoxide Dismutase (SOD) (%), Reduced Glutathione (GSH) (%), Catalase (CAT) and Glutathione Peroxidise (GPX) were evaluated. Seed extract among other extracts of Aframomum melegueta has the highest quantity of flavonoids, Phenol, FRAP, DPPH, ABTS, Fe2+ chelation and OH radical scavenging potential. The leaf extract of A. meleguata has the highest percentage of Superoxide Dismutase (SOD) and Catalase (CAT) while stem bark of Aframomum melegueta has the highest percentage of Reduced Glutathione (GSH) and Glutathione Peroxidise (GPX).it can be deduced from this research work that all parts of the A. melegueta has pharmacological and therapeutic activities judging from literature that A. melegueta can be used to prevent oxidative damage by ROS (Reactive oxygen species) reacting with free radical chelating and catalytic metals  which can be used to reduce and prevent various diseases like heart disease, cancer, DNA degeneration, pulmonary and neurological disorder. SOD, GPX, GSH help to control cytokins induced peroxidise level and mediate signal transduction in mammalian cells. It can be deduced that Aframomum melegueta should be the focal point in human diet, natural herbal drug supplement and even in addition to conventional drug to improve the potency and quality of natural drug system. The use of Aframomum melegueta should be encouraged. These results show the potential of Aframomum melegueta as a source of bioactive compounds to be used for pharmaceutical, nutraceutical, and cosmeceutical applications.

scholarly journals Effectiveness of Three Fruit Seed Extracts as Larvicide against Three Major Mosquito Vectors Aedes aegypti Linnaeus, Culex quinquefasciatus Say and Anopheles gambiae Giles (Diptera: Culicidae)

2020 ◽  
pp. 16-29
Author(s):  
Lame Younoussa ◽  
Kary Mallam Oumarou ◽  
Theodora Kopa Kowa ◽  
Serge Eteme Enama ◽  
Gabriel Agbor Agbor ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Anopheles Gambiae ◽  
Culex Quinquefasciatus ◽  
Tap Water ◽  
Mosquito Species ◽  
Mangifera Indica ◽  
Larval Mortality ◽  
Persea Americana ◽  
Plant Seed ◽  
Seed Extracts

The CH2Cl2-MeOH (30:70 v/v) extracts of the seeds of Mangifera indica (Mango), Persea americana (Avocado) and Dacryodes edulis (African plum) were evaluated for potential mosquito larvicidal activity against 3rd and 4th instar larvae of Aedes aegypti, Culex quinquefasciatus and Anopheles gambiae. Extracts were diluted with 1 mL of methanol and concentrations ranging from 1000 to 125 mg/L in 4 replicates each, were prepared in the volume of 100 mL in the plastic cups (250 mL). A volume of 1 mL of methanol added to 99 mL of tap water was prepared as negative control and Bi-one (1000 mg/L) constituted a positive control. In each test solution, 25 larvae of each mosquito species were separately transferred and larval mortality was recorded after 24 h post-treatment. As results, the three plant seed extracts applied at 1000 mg/L caused for at least 79% mortality of each mosquito species larvae assessed. The seed extract of P. americana (LC50 of 98.31, 129.24 and 136.26 mg/L, respectively against An. gambiae, Ae. aegypti and Cx. quiquefasciatus larvae) was the most potent followed by D. edulis (LC50 of 176.87 mg/L for An. gambiae, 198.68 mg/L for Ae. aegypti and 201.70 mg/L for Cx. quinquefasciatus) and M. indica (LC50 of 258.98 mg/L for An. gambiae, 297.35 mg/L for Ae. aegypti and 435.45 mg/L for Cx. quinquefasciatus).  Globally, all the seed extracts were more toxic against An. gambiae larvae compared to other mosquito species and need further exploration for the development of a new botanical larvicide to reduce mosquito densities.

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