Results 101 to 110 of about 18,034 (188)

Green extraction of poplar type propolis: ultrasonic extraction parameters and optimization via response surface methodology

open access: yesBMC Chemistry
Optimizing the extraction of natural products is an important step to obtain products rich in bioactive compounds with less energy use and costs. The aim of this study was to optimize the ultrasonic extraction process of poplar type propolis with natural
Milena Popova   +4 more
doaj   +1 more source

Synthetic Derivatives of Natural Alkaloid Harmine

open access: yesEurasian Chemico-Technological Journal, 2009
The indole alkaloid harmine was extracted from underground part of Peganum harmala L. With the purpose of obtaining the new biological active derivatives on base of alkaloid harmine the chemical modification was carried out.
M. M. Ismagulova   +4 more
doaj   +1 more source

Phytochemistry meets genome analysis, and beyond...

open access: yes, 2003
Editorial article on phytochemistry meeting genome analysis, and ...
Dixon, R. A., Strack, Dieter
core   +1 more source

The "new" chemosystematics : Phylogeny and phytochemistry

open access: yes, 2007
For almost a decade it has been acknowledged that the flowering plant dichotomy of monocotyledons and dicotyledons does not reflect the evolution of angiosperms. Despite this, conclusions in the field of chemosystematics are still drawn from, and rely on,
Larsson, Sonny,
core   +1 more source

Structure characterization and immunoactivity on dendritic cells of two neutral polysaccharides from Dictyophora rubrovalvata

open access: yesNatural Products and Bioprospecting
Dictyophora rubrovalvata is a valuable fungus homologous to food and medicine, and its polysaccharide have been gaining increasing attention because of its plentiful activity. However, the structure and activity of its homogeneous polysaccharide have not
Ni Huang   +9 more
doaj   +1 more source

Phytochemistry of Australian Plants

open access: yes, 2017
Phytochemistry of Australian Plants is a database on compounds isolated from Australian plants, including data from work by international chemists on those plants that are also indigenous in some other countries, and on plants such as species of ...
David Collins (2195629)   +1 more
core   +1 more source

Identification of Nine Compounds known as “Smart Drugs” in Japan from 2020 to 2022

open access: yesEmerging Trends in Drugs, Addictions, and Health
Introduction: In recent years, several compounds known as “smart drugs”, also known as “nootropics”, have been detected in Japan. The smart drugs have been claiming to enhancing human brain activity.
R. Tanaka   +3 more
doaj   +1 more source

Lysine-ketoglutarate Reductase Activity In Maize: Its Possible Role In Lysine Metabolism Of Developing Endosperm

open access: yes, 2015
Lysine-ketoglutarate reductase has been isolated from maize (Zea mays) endosperm during development. The enzyme activity was dependent upon lysine, 2-oxoglutarate and NADPH as substrates.
da Silva P.A.W.J.
core   +1 more source

13c Nmr Spectral And Conformational Analysis Of 8-o-4′ Neolignans

open access: yes, 2015
The 13C NMR spectra of the erythro and threo forms of representative members of the 8-O-4′ type of neolignans were recorded and the signals assigned. Based on these assignments and on the comparison with previously reported 1H NMR data, the most probable
Badano H.   +4 more
core   +1 more source

Saponins in the genus Panax L. (Araliaceae): A systematic review of their chemical diversity

open access: yes, 2014
The Panax genus is a crucial source of natural medicines that has benefited human health for a long time. Three valuable medicinal herbs, namely Panax ginseng, Panax quinquefolius, and Panax notoginseng, have received considerable interest due to their ...
Hu, Ying   +4 more
core   +1 more source

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