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Showing 1-30 of 31 results for "09258" within Papers
Determination of major bioactive compounds from olive leaf.
Guinda, Angeles, et al.
LWT--Food Science and Technology, 64.1 , 431-438 (2015)
Lucía Olmo-García et al.
Food chemistry, 261, 184-193 (2018-05-10)
Several analytical methods are available to evaluate virgin olive oil (VOO) minor compounds; however, multi-class methodologies are yet rarely studied. Herewith, LC-MS and GC-MS platforms were used to develop two methods capable of simultaneously determine more than 40 compounds belonging
Aadil Bajoub et al.
Food chemistry, 179, 127-136 (2015-02-28)
Current knowledge of the quality and composition of Moroccan olive oil is still incomplete and no consistent database compiling its properties is available. This study was carried out to achieve a comprehensive characterisation of north Moroccan olive oils. Thus, 279
J H Sung et al.
Archives of pharmacal research, 22(6), 633-637 (2000-01-01)
Activity-guided fractionation of the whole plant of Solidago virga-aurea var. gigantea M(IQ). (Compositae) has led to the isolation of three cytotoxic compounds, erythrodiol-3-acetate (1), alpha-tocopherol-quinone (2), and trans-phytol (3) from the hexane soluble fraction. It is the first report of
S Máñez et al.
European journal of pharmacology, 334(1), 103-105 (1997-11-05)
The activity of four natural triterpenoids on a 12-O-tetradecanoylphorbol-13-acetate multiple-dose model of skin chronic inflammation was studied. Erythrodiol and ursolic acid were significantly effective. The most important features concerning structure-activity relationship and previous data on the effect of these triterpenoids
Ghayth Rigane et al.
Journal of the science of food and agriculture, 93(3), 527-534 (2012-08-14)
The aim of this work was to study the chemical characteristics of two Tunisian cultivars, namely Dhokar and Gemri-Dhokar, to analyse the fatty acids, sterols, triacylglycerols, triterpenic alcohols, and to determine the phenolic composition and oxidative stability. Among the rare
Yosra Allouche et al.
Journal of agricultural and food chemistry, 57(9), 3604-3610 (2009-03-31)
Forty olive cultivars (Olea europaea, L.) from the World Olive Germoplasm Bank Collection of Cordoba (Spain) were studied for their oil triterpenic dialcohol (uvaol and erythrodiol) and acid (oleanolic, ursolic, maslinic) composition. Dialcohol content ranged from 8.15 to 85.05 mg/kg
Elenilze Figueiredo Batista et al.
Natural product research, 27(1), 1-8 (2011-12-14)
Chemical investigation of extracts from the stems and leaves of Alchorneopsis floribunda Müll. Arg., collected in the Amazon region, was performed. The main isolated compounds were triterpenes (α-amyrin, β-amyrin, lupeol, betulin, betulinic acid, uvaol, erythrodiol and oleanolic acid) and phenolic
Baocheng Xu et al.
Food chemistry, 245, 415-425 (2017-12-31)
A method based on comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC-TOF/MS) was developed to analyze steroidal compounds in vegetable oils, which could provide better separation and higher sensitivity than conventional one dimensional gas chromatography, and allowed determination
Camille Gaube Guex et al.
Regulatory toxicology and pharmacology : RTP, 95, 395-399 (2018-04-22)
Olea europaea L., popularly known as olive, is a plant widely used worldwide. Its leaves, fruit and oil are extensively consumed and present important pharmacological properties. However, studies regarding the toxicity of olive leaves are still limited in the literature.
Yunseok Oh et al.
Journal of pharmaceutical sciences, 107(6), 1713-1723 (2018-02-21)
Betulinic acid (BA), a plant-derived pentacyclic triterpenoid, may interact with the members of the organic anion transporting polypeptide 1B subfamily. Here, we investigated the interactions of BA and its analogs with OATP1B1/3 and rat Oatp1b2 in vitro and in vivo. BA inhibited
Georgios Koutrotsios et al.
Journal of agricultural and food chemistry, 66(24), 5971-5983 (2018-06-06)
Pleurotus ostreatus, P. eryngii, and P. nebrodensis were cultivated on nonconventional substrates containing grape marc (GMC) or olive mill byproducts (OMB); wheat straw (WHS) served as control. GMC-based media demonstrated equal/better mushroom productivity than WHS for P. eryngii and P.
Rosalía Rodríguez-Rodríguez et al.
The British journal of nutrition, 92(4), 635-642 (2004-11-04)
'Orujo' olive oil is obtained by chemical processes from the waste resulting from the mechanical extraction of virgin olive oil. The aim of the present study was to evaluate a new pharmacological property of two natural triterpenoids contained in olive
M Emília Juan et al.
Molecular nutrition & food research, 52(5), 595-599 (2008-04-04)
Erythrodiol is the precursor of pentacyclic triterpenic acids present in Olea Europaea. Although olive oil and some of its constituents are reported to have anticarcinogenic activities, erythrodiol has not been assessed in its cell biological functions in detail. We therefore
Ana Marquez-Martin et al.
Cytokine, 36(5-6), 211-217 (2007-02-13)
Olive pomace oil, also known as "orujo" olive oil, is a blend of refined-pomace oil and virgin olive oil, fit for human consumption. Maslinic acid, oleanolic acid, erythrodiol, and uvaol are pentacyclic triterpenes, found in the non-glyceride fraction of orujo
O B Kazakova et al.
Bioorganicheskaia khimiia, 37(3), 414-424 (2011-09-09)
The synthesis of aminopropoxy derivatives of betulin, erythrodiol, uvaol and oleantriol via cyanoethylation of triterpenoids hydroxyl groups and subsequent reduction of cyanoethyl fragments is described. High and specific in vitro antitumor activity (cytotoxicity) of 3beta,28-di-O-[3-(aminopropoxy)]lupa-20(29)-ene and 3beta-O-hydroxy-28-O-[3-(aminopropoxy)]olean-12-ene towards a wide
Maria Carelli et al.
The Plant cell, 23(8), 3070-3081 (2011-08-09)
Saponins, a group of glycosidic compounds present in several plant species, have aglycone moieties that are formed using triterpenoid or steroidal skeletons. In spite of their importance as antimicrobial compounds and their possible benefits for human health, knowledge of the
Hédia Manai-Djebali et al.
Journal of oleo science, 67(4), 379-388 (2018-03-13)
The chemical composition of extra virgin olive oils (EVOOs) from six new progenies, obtained through controlled crossings between the main Tunisian variety Chemlali and autochthonous (Chemcheli) and foreign cultivars (Sigoise, Coratina, Koroneiki, and Arbequina) used as pollen acceptor or pollinator
Rubén Martín et al.
PloS one, 4(6), e5975-e5975 (2009-06-23)
Triterpene alcohols and acids are multifunctional compounds widely distributed throughout the plant kingdom that exhibit a variety of beneficial health properties, being synthetic analogs of oleanolic acid under clinical evaluation as anti-tumoral therapeutic agents. However, the antineoplastic activity of two
Dalila Smati et al.
Journal of ethnopharmacology, 95(2-3), 405-407 (2004-10-28)
3beta-(3,4-Dihydroxycinnamoyl)-erythrodiol was isolated as the cytotoxic constituent of the roots of Zygophyllum geslini.
Jean Wandji et al.
Planta medica, 68(9), 822-826 (2002-10-03)
Chemical studies of the CH2 Cl2 -MeOH extract of the seeds of Gambeya africana (Baker) Pierre led to the isolation of 15 compounds. Their structures were established on the basis of spectroscopic methods and chemical reactions. They comprised five new
Ayumi Ohsaki et al.
Journal of natural products, 67(3), 469-471 (2004-03-27)
Four new triterpenoids with various skeletons, maytefolins A-C (1-3) and uvaol-3-caffeate (4), were isolated from the leaves of a Brazilian medicinal plant, Maytenus ilicifolia, together with five known triterpenoids. Of these triterpenoids only erythrodiol exhibited significant cytotoxicity against KB/S, KB/VJ300
Angeles Guinda et al.
Journal of agricultural and food chemistry, 58(17), 9685-9691 (2010-08-18)
This work establishes a new procedure for the extraction and analysis of pentacyclic triterpenes, with which fruits and leaves from three Spanish olive cultivars ("Picual", "Hojiblanca", and "Arbequina") has been studied. The leaf contains important amounts of oleanolic acid (3.0-3.5%
M Amelio et al.
Journal of chromatography, 606(2), 179-185 (1992-08-14)
A method is described for the determination of the sterol, erythrodiol, uvaol and alkanol content in olive oils by means of solid-phase extraction and high-performance liquid chromatography, instead of liquid-liquid and thin-layer chromatographic separations, the following step being high-resolution gas
Ruben Martín et al.
PloS one, 7(7), e41545-e41545 (2012-07-31)
The natural triterpenes, erythrodiol and uvaol, exert anti-inflammatory, vasorelaxing and anti-proliferative effects. Angiotensin II is a well-known profibrotic and proliferative agent that participates in the cardiac remodeling associated with different pathological situations through the stimulation and proliferation of cardiac fibroblasts.
R Martín et al.
British journal of pharmacology, 166(5), 1708-1723 (2012-01-21)
Multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE), are inflammatory demyelinating diseases that develop as a result of deregulated immune responses causing glial activation and destruction of CNS tissues. Oleanolic acid and erythrodiol are natural triterpenes that
R de la Puerta et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 55(9-10), 814-819 (2000-12-01)
Interest in the health-promoting effects of virgin olive oil, an important part of the "Mediterranean diet", prompted us to determine the antiinflammatory effects of erythrodiol, beta-sitosterol and squalene, identified as major components of the so-called "unsaponifiable fraction" of virgin olive
Javier S Perona et al.
Journal of agricultural and food chemistry, 53(3), 730-735 (2005-02-03)
In contrast to other metabolic functions, the role of dietary antioxidants and oil on microsomal lipid oxidation has been less extensively studied. This study examines ascorbate-Fe(2+) and NADPH-induced lipid peroxidation of hepatic microsomes of rats that were fed for three
Gassan Hodaifa et al.
Journal of AOAC International, 95(6), 1720-1724 (2013-03-05)
Mixing of refined olive-pomace oil with virgin olive oil is a fraud that has been tried often. Normally, the tests that detected the fraud were determinations of wax esters, erythrodiol+uvaol, and stigmastadienes contents. The most common is the determination of
Lucía Olmo-García et al.
Food chemistry, 239, 631-639 (2017-09-07)
Pentacyclic triterpenes are minor, but very relevant compounds found in virgin olive oil (VOO). A rapid and reliable LC-MS method for determining the triterpenic acids and dialcohols (after ultrasound assisted extraction) from VOO has been developed, giving an alternative to
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