Now showing items 1-10 of 37
Conformational analysis of oligomeric profisetinidins
(University of the Free State, 2007-02)
English: The profisetinidins are an important class of condensed tannins, or proanthocyanidins. Historically, studies towards the structure and conformation of proanthocyanidins were done on their peracetate and permethyl ...
Identification and expression analysis of flavonoid biosynthetic genes in the genus Clivia
(University of the Free State, 2010)
English: Anthocyanins belong to a large group of secondary plant metabolites, the flavonoids, and fulfil a range of biological functions that include the cyanic pigmentation they provide to flowers, fruits, vegetables and ...
The constitution of oligomeric benzofuranoids
(University of the Free State, 1999-05)
English: Berchemia zeyheri is known for its unique red heartwood, a property that was probably responsible for the first phytochemical investigation into the flavonoid content of this tree. The heartwood contains a unique ...
Struktuurondersoek van die isoflavanoïde uit Neorautanenia ficifolia (Benth ex Harv.) C.A. Sm.
(University of the Free State, 1965-01)
Abstract not available
Photochemistry of (+)-catechin and (-)-epicatechin
(University of the Free State, 2008-01)
Despite the well known fact that photolysis of free phenolic catechins give rise to isomerisation at the C-2 position (e.g. (-)-cis epicatechin converts to the sterically less hindered (-)-trans isomer), researchers have ...
Development of new "green" methodology for the synthesis of substituted phenylacetic acid derivatives as precursors to isoflavonoids and related compounds
(University of the Free State, 2013-01)
English: Flavonoids and isoflavonoids are known to exhibit many important physiological properties and are especially promising candidates for cancer chemoprevention. Similar to most natural products, studies directed at ...
Development of a viable protocol aimed at the synthesis of a selected natural product with possible application in the industry
(University of the Free State, 2007)
Since the introduction of synthetic analogues in both the health-related and cosmetic industry, a new generation has emerged in search of beneficial bioactivity compounds. This generation of “natural and green” focuses ...
Biflavonoied diastereo-isomere en hul biogenetiese voorlopers uit Berchemia SPP.: pogings tot sintese van analoe
(University of the Free State, 1976-02)
Afrikaans: Hierdie studie behels die struktuurondersoek, omskakelingsreaksies en pogings tot sintese van sommige van die mono- en biflavonoïede uit die kernhout van Berchernia zeyheri met 'n aanvullende studie op die ...
An investigation into the biocatalytic and antimicrobial properties of Eucomis autumnalis Mill. bulbs
(University of the Free State, 2003)
English: Over the past number of years a renewed interest in the search for natural alternative products, with the aim to replace existing synthetic antimicrobial, herbicidal and pesticidal chemicals in organic crop ...
Structure and synthesis of flavan oligomers from Cassia petersiana
(University of the Free State, 1999-04)
English: The bark of Cassia petersiana afforded the known flavan-f-ols (+)-catechin, (-)- epicatechin, (+)-gallocatechin and epigallocatechin which co-occured with three new procassinidins namely cassiaflavan-( ...