Results 41 to 50 of about 7,068 (252)

Antioxidant activity and ultrastructural alterations in Leishmania amazonensis promastigotes induced by limonoid-rich fractions from andiroba oil [PDF]

open access: yesActa Amazonica
In the Amazon region, andiroba (Carapa guianensis) oil is among the most used products by the local population due to its medicinal properties. Previously, our group described the leishmanicidal activity of three limonoid-rich fractions from andiroba oil.
Fernando ALMEIDA-SOUZA   +5 more
doaj   +1 more source

Limonoides isolados dos frutos de Carapa guianensis Aublet (Meliaceae)

open access: yesQuímica Nova, 2012
Six limonoids were isolated in hexane extract obtained from the seeds and pericarps of Carapa guianensis. The structures of the limonoids were determined based on the analysis of High Resolution Mass Spectroscopy and Nuclear Magnetic Resonance (uni-and ...
Suniá Gomes Silva   +2 more
doaj   +1 more source

Total Synthesis of (+)-Granatumine A and Related Bislactone Limonoid Alkaloids via a Pyran to Pyridine Interconversion.

open access: yesJournal of the American Chemical Society, 2019
We report the first total synthesis of (+)-granatumine A, a limonoid alkaloid with PTP1B inhibitory activity, in ten steps. Over the course of this study, two key methodological advances were made: a cost-effective procedure for ketone α,β ...
Alexander W. Schuppe   +3 more
semanticscholar   +1 more source

Citrus Limonoids [PDF]

open access: yes, 2000
Preface 1. Citrus Limonoid Research: An Overview 2. Biochemistry of Limonoids in Citrus 3. Analysis of Limonoids by Thin-Layer Chromatography 4. LC-MS and NMR Techniques for the Analysis and Characterization of Citrus Limonoids 5. Analysis of Limonin and Flavonoids in Citrus Juices and Byproduct Extracts by Direct Injection and In-Line Sample Clean-up ...
openaire   +1 more source

Limonoids in Phellodendron amurense (Kihada)

open access: yesYAKUGAKU ZASSHI, 1992
Limonoids and their glucosides in the seeds and barks of Phellondendron amurense (Kihada) were analyzed. The seeds contained limonin (1950 ppm), obakunone (20 ppm), limonin 17-beta-D-glucopyranoside (820 ppm) and obakunone 17-beta-D-glucopyranoside (1360 ppm). The barks contained limonin (6760 ppm), obakunone (1240 ppm) and nomilin (270 ppm).
M, Miyake   +6 more
openaire   +3 more sources

Limonoids from the Seeds of Swietenia macrophylla and Their Anti-Inflammatory Activities

open access: yesMolecules, 2015
A new limonoid, swietemacrophin (1), was isolated from the seeds of Swietenia macrophylla, together with five known compounds 2–6. The structure of 1 was determined through extensive 1D/2D-NMR and mass-spectrometric analyses.
Li-Chai Chen   +7 more
doaj   +1 more source

Potential Nutritional Benefits of Current Citrus Consumption

open access: yesAgriculture, 2013
Citrus contains nutrients and phytochemicals that may be beneficial for health. We collected citrus production and consumption data and estimated the amount of these compounds that are consumed.
Tami Turner, Betty J. Burri
doaj   +1 more source

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt   +4 more
wiley   +1 more source

Phytochemistry and Biological Activities of Guarea Genus (Meliaceae)

open access: yesMolecules, 2022
Guarea is one of the largest genera of the American Meliaceae family, consisting of over 69 species which are widely distributed in Mexico, Argentina, and Africa and are used in traditional medicine for several diseases.
Wahyu Safriansyah   +3 more
doaj   +1 more source

Studies on the extraction and characterization of pectin and bitter principles from New Zealand grapefruit and Philippine calamansi : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Food Technology at Massey University [PDF]

open access: yes, 1981
A study was conducted to determine the presence of bitter components in NZ grapefruit and Philippine calamansi; describe the effect of maturity on the bitter components and other chemical constituents of grapefruit; reduce the bitterness of grapefruit ...
Nisperos, Myrna Ordoña
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