Cyanide Removal by ZnTiO/TiO/HO/UVB System: A Theoretical-Experimental Approach.

Cyanide is a highly toxic substance present in wastewater from various industries. This study investigates the removal of cyanide species (CS) from aqueous solutions using the ZnTiO/TiO/HO/UVB system. ZnTiO/TiO nanoparticles synthesized by the sol-gel method were characterized by powder X-ray diffractometry (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS).

A Study of the Essential Oil Isolated from (Spreng.) R.M. King & H. Rob.: Chemical Composition, Enantiomeric Distribution, and Antimicrobial, Antioxidant, and Anticholinesterase Activities.

is an aromatic species native to Ecuador. In this study, the chemical composition, enantiomeric distribution, and antifungal, antibacterial, antioxidant, and anticholinesterase activities of the essential oil isolated from aerial parts of were determined. The quantitative chemical composition was determined using gas chromatography equipped with a flame ionization detector.

Therapeutic Applications of Essential Oils from Native and Cultivated Ecuadorian Plants: Cutaneous Candidiasis and Dermal Anti-Inflammatory Activity.

Essential oils are a complex mixture of aromatic substances whose pharmacological actions, including antimicrobial, antioxidant, anticancer, and anti-inflammatory activities, have been widely reported. This study aimed to evaluate the anti- and dermal anti-inflammatory activity of essential oils from native and cultivated Ecuadorian plants. Essential oils from , , , and were isolated by hydrodistillation and were characterized physically and chemically.

Porous Geopolymer/ZnTiO/TiO Composite for Adsorption and Photocatalytic Degradation of Methylene Blue Dye.

In this study, GP (geopolymer) and GTA (geopolymer/ZnTiO/TiO) geopolymeric materials were prepared from metakaolin (MK) and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), energy dispersive X-rays (EDX), specific surface area (SSA), and point of zero charge (PZC). The adsorption capacity and photocatalytic activity of the compounds prepared in the form of pellets was determined by degradation of the methylene blue (MB) dye in batch reactors, at pH = 7.0 ± 0.

Faujasite-Type Zeolite Obtained from Ecuadorian Clay as a Support of ZnTiO/TiO NPs for Cyanide Removal in Aqueous Solutions.

In this study, zeolites prepared by the hydrothermal method from Ecuadorian clay were combined with the precursor clay and with the semiconductor ZnTiO/TiO prepared by the sol-gel method to adsorb and photodegrade cyanide species from aqueous solutions. These compounds were characterized by X-ray powder diffraction, X-ray fluorescence, scanning electron microscopy, energy-dispersive X-rays, point of zero charge, and specific surface area. The adsorption characteristics of the compounds were measured using batch adsorption experiments as a function of pH, initial concentration, temperature, and contact time.

Study of Essential Oil Isolated from Achiote () Leaves: Chemical Composition, Enantiomeric Distribution and Antimicrobial, Antioxidant and Anticholinesterase Activities.

is a native and cultivated species of Ecuador commonly known as achiote (annatto), this species is very versatile with a wide variety of uses and applications of its leaves, fruits and seeds. In this study, the chemical composition, enantiomeric distribution and biological activity of essential oil isolated from the leaves of were determined. Hydrodistillation was used to isolate the essential oil.

Chemical Profiling, Anticholinesterase, Antioxidant, and Antibacterial Potential of the Essential Oil from (Kunth) McVaugh, an Aromatic Tree from Southern Ecuador.

an aromatic native tree from southern Ecuador, was collected to determine the chemical composition and the biological activity of its essential oil (EO). The EO was obtained by steam-distillation and analyzed by gas chromatography coupled to a mass and a FID detector (GC-MS and GC-FID) and a non-polar DB5-MS column. Enantioselective GC-MS analysis was performed in a chiral capillary column.

Study of the Chemical Composition and Biological Activity of the Essential Oil from Congona ( Ruiz and Pav.).

The species , commonly known as congona, is a succulent herbaceous plant belonging to the Piperaceae family, which is used for different purposes in traditional medicine. In this study, the chemical composition, enantiomeric distribution, and biological activity of essential oil isolated from the leaves of this species was determined. Hydrodistillation was used to isolate the essential oil.

Chemical Composition, Enantiomeric Distribution and Biological Activity of Essential Oil from (Humb. & Bonpl. ex Willd.) Wilbur.

The species , commonly known as wax laurel, is a tree belonging to the Myricaceae family that can be found from Costa Rica to Bolivia. In this study, the chemical composition, enantiomeric distribution, and biological activity of essential oil isolated from the leaves of this species was determined. Hydrodistillation was used to isolate the essential oil (EO).

Chemical Composition and Biological Activity of Essential Oil from Leaves and Fruits of Limoncillo ( (Ruiz & Pav.) A. DC.).

is an aromatic native shrub or tree from Ecuador known as "limoncillo" or "limón de la sierra" due to its citrus odor. In this study, the chemical composition and biological activity of essential oil from the leaves and fruits of this species was determined. The essential oil was isolated by subjected to hydrodistillation.

Characterization and In Vivo Anti-Inflammatory Efficacy of Copal ( (Loes.) H.J. Lam) Essential Oil.

Essential oils are natural aromatic substances that contain complex mixtures of many volatile compounds frequently used in pharmaceutical and cosmetic industries. (Loes.) H.

Chemical and Biological Activity Profiling of Hedyosmum strigosum Todzia Essential Oil, an Aromatic Native Shrub from Southern Ecuador.

The present study aimed to determine the chemical composition, enantiomeric distribution and the biological profile of Hedyosmum strigosum essential oil (EO). The antioxidant properties and anticholinesterase effect were measured by spectroscopic methods and antimicrobial potency assessed against 8 bacteria and two fungi. H.

La's Effect on the Surface (101) of Anatase for Methylene Blue Dye Removal, a DFT Study.

Density functional theory (DFT) is a widely used method for studying matter at the quantum level. In this study, the surface (101) of TiO (anatase phase) was considered to develop DFT calculations and explain the effect of lanthanum ion (La) on the electronic properties, adsorption capacity, and photocatalytic activity of this semiconductor. Due to the presence of the La ion, the bandgap energy value of La/TiO (2.

Chemical Composition, Enantiomeric Distribution and Anticholinesterase and Antioxidant Activity of the Essential Oil of .

The aim of this study was to extract and identify the chemical compounds of Diplosthephium juniperinum essential oil (EO) from Ecuador and to assess its anticholinesterase and antioxidant properties. The EO chemical composition was determined by GC−MS. A total of 74 constituents of EO were identified, representing 97.

Enantiomeric Composition, Antioxidant Capacity and Anticholinesterase Activity of Essential Oil from Leaves of Chirimoya ( Mill.).

Mill. is a native species of Ecuador cultivated worldwide for the flavor and properties of its fruit. In this study, hydrodistillation was used to isolate essential oil (EO) of fresh leaves collected in Ecuadorian Sierra.

Acaricidal Efficacy of Plants from Ecuador, (Asteraceae) and (Lamiaceae) against Larvae and Engorged Adult Females of the Common Cattle Tick, .

Control measures against common cattle tick are of the upmost importance because of considerable, deleterious impact on a farm's economy. Due to resistance phenomena to synthetic acaricides being a constraint in affected farms, the search for plant derivatives as acaricides has increased dramatically in recent years. In this work, essential oils obtained from two Ecuadorian plants, and (EO, EO), traditionally used as insecticides in indigenous communities, were studied on larvae and engorged females at the parasitic stages of .

Variability of the Chemical Composition and Bioactivity between the Essential Oils Isolated from Male and Female Specimens of (Ruiz & Pav.) G. Don.

(Ruiz & Pav.) G. is a native species of Ecuador used in traditional medicine for treatment of rheumatism, bronchitis, cold, cough, asthma, bone pain, and stomach pain.

Chemical Constituents of the Essential Oil from Ecuadorian Endemic Species and Its Antimicrobial, Antioxidant and α-Glucosidase Inhibitory Activity.

Kunth is an endemic species of Ecuador used in traditional medicine both for wound healing and as an antiseptic. In this study, fresh leaves were collected and subjected to hydrodistillation for extraction of the essential oil. The chemical composition of the essential oil was determined by gas chromatography equipped with a flame ionization detector and gas chromatography coupled to a mass spectrometer using a non-polar and a polar chromatographic column.

Variability of the Chemical Composition of the Essential Oil from the Amazonian Ishpingo Species ().

(Lam.) Kosterm. is an aromatic tree native to Ecuador, whose leaves are used to prepare aromatic beverages to which different health benefits are attributed.

Study of Volatile Secondary Metabolites Present in Leaves and in the Traditional Ecuadorian Beverage Guaviduca.

Ruiz & Pav. is an aromatic shrub native to Ecuador, the leaves of which are used to prepare the traditional beverage Guaviduca. Different health benefits are attributed to the guaviduca beverage, which is consumed as a traditional and folk medicine.

Extraction and Study of the Essential Oil of Copal (), an Amazonian Fruit with the Highest Yield Worldwide.

Essential oils are highly demanded substances worldwide. They can be used without modification due to their different chemical and biological properties or as natural sources of chemical compounds. The limit in the use of these metabolites is their low yield.

Phytochemical profile, antimicrobial and antioxidant activities of essential oil extracted from Ecuadorian species sodiro.

In the present research, the essential oil from was analysed by GC/MS and GC/FID techniques. A total of forty-four chemical compounds were identified which represent 98.65% of the essential oil composition.

Volatile Metabolites in Liverworts of Ecuador.

Volatile metabolites from Raddi, (Sw.) Grolle, (Nees) Grolle, and (Lindenb. & Gottsche) Steph collected in the south of Ecuador were investigated.

Acaricidal effect of Schinus molle (Anacardiaceae) essential oil on unengorged larvae and engorged adult females of Rhipicephalus sanguineus (Acari: Ixodidae).

The current concern about resistance to acaricides and the impact of toxic waste on the environment has led to the search of vegetal alternatives in the control of the brown tick of the dog Rhipicephalus sanguineus. Schinus molle L. (Anacardiaceae) derivatives have been associated with insecticidal, antimicrobial and antiprotozoal activities and essential oil showed to be lethal to R.