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List of works by Alvaro Viljoen

"Wild cannabis": A review of the traditional use and phytochemistry of Leonotis leonurus

scientific article published on 17 August 2015

'Buchu' -Agathosma betulina and Agathosma crenulata (Rutaceae): a review.

scientific article published on 03 August 2008

10-Hydroxyaloin B 6‘-O-Acetate, an Oxanthrone fromAloe claviflora

scientific article published on 01 February 1998

1H-NMR and UPLC-MS metabolomics: Functional tools for exploring chemotypic variation in Sceletium tortuosum from two provinces in South Africa

scientific article published on 21 May 2018

6′-O-Coumaroylaloesin from Aloe castanea — a taxonomic marker for Aloe section Anguialoe

scientific article published on 01 September 2000

A chemotaxonomic and morphological appraisal of Aloe series Purpurascentes, Aloe section Anguialoe and their hybrid, Aloe broomii.

scientific article published in June 2001

A comprehensive scientific overview of Garcinia cambogia.

scientific article

A novel approach in herbal quality control using hyperspectral imaging: discriminating between Sceletium tortuosum and Sceletium crassicaule

scientific article published on 17 April 2013

Activity of a traditional South African epilepsy remedy in the GABA-benzodiazepine receptor assay.

scientific article published on 10 December 2004

An untargeted metabolomic approach in the chemotaxonomic assessment of two Salvia species as a potential source of α-bisabolol.

scientific article published on 14 September 2012

Antibacterial Screening, Biochemometric and Bioautographic Evaluation of the Non-Volatile Bioactive Components of Three Indigenous South African Salvia Species

scientific article published on 06 July 2022

Antimicrobial Essential Oil Combinations to Combat Foot Odour.

scientific article

Antimicrobial activity and chemometric modelling of South African propolis.

scientific article published on 17 July 2015

Antimicrobial monomeric and dimeric diterpenes from the leaves of Helichrysum tenax var tenax.

scientific article published on 24 January 2006

Camphor--a fumigant during the Black Death and a coveted fragrant wood in ancient Egypt and Babylon--a review.

scientific article published on 10 May 2013

Chemical Fingerprinting Profile and Targeted Quantitative Analysis of Phenolic Compounds from Rooibos Tea (Aspalathus linearis) and Dietary Supplements Using UHPLC-PDA-MS

scientific article published in 2022

Chromones and anthrones from Aloe marlothii and Aloe rupestris

scientific article published on 01 December 2000

Constituents of cinnamon inhibit bacterial acetyl CoA carboxylase.

scientific article published on 8 April 2010

Devil's Claw—A review of the ethnobotany, phytochemistry and biological activity of Harpagophytum procumbens ⬇️

scientific article published on August 21, 2012

Differentiation between two "fang ji" herbal medicines, Stephania tetrandra and the nephrotoxic Aristolochia fangchi, using hyperspectral imaging.

scientific article

Effects of dietary fruits, vegetables and a herbal tea on the in vitro transport of cimetidine: comparing the Caco-2 model with porcine jejunum tissue

scientific article published on 01 February 2012

Essential Oil Variation within Warburgia salutaris-A Coveted Ethnomedicinal Aromatic Tree

scientific article published on 01 November 2020

Eugenol--from the remote Maluku Islands to the international market place: a review of a remarkable and versatile molecule.

scientific article published on 06 June 2012

From arrow poison to herbal medicine--the ethnobotanical, phytochemical and pharmacological significance of Cissampelos (Menispermaceae)

scientific article (publication date: 11 September 2014)

Gingerols and shogaols: Important nutraceutical principles from ginger

scientific article

Herb-drug pharmacokinetic interactions reviewed.

scientific article

Hoodia gordonii: an up-to-date review of a commercially important anti-obesity plant.

scientific article published on 21 January 2011

Hyperspectral imaging and chemometric modeling of echinacea - a novel approach in the quality control of herbal medicines.

scientific article published on 26 August 2014

Hyperspectral imaging in the quality control of herbal medicines - the case of neurotoxic Japanese star anise.

scientific article published on 7 December 2012

Identification, Isolation and Determination of Biomarkers for Quality Control of Bush Tea (Athrixia phyllicoides).

scientific article published on 13 April 2018

In Vitro Drug Absorption Enhancement Effects of Aloe vera and Aloe ferox ⬇️

scientific article published on April 1, 2012

In vitro evidence of phyto-synergy for plant part combinations of Croton gratissimus (Euphorbiaceae) used in African traditional healing.

scientific article

In vitro permeation of mesembrine alkaloids from Sceletium tortuosum across porcine buccal, sublingual, and intestinal mucosa. ⬇️

scientific article

In vitro transport of the steroidal glycoside P57 from Hoodia gordonii across excised porcine intestinal and buccal tissue.

scientific article

Intestinal drug transport enhancement by Aloe vera

scientific article published on 12 February 2009

Investigating the effect of Aloe vera gel on the buccal permeability of didanosine

scientific article published on 12 December 2011

Lawsonia inermis L. (henna): ethnobotanical, phytochemical and pharmacological aspects

scientific article

Menthol: a simple monoterpene with remarkable biological properties.

scientific article

Myricetin: A Dietary Molecule with Diverse Biological Activities

scientific article

NMR structural elucidation of channaine, an unusual alkaloid from Sceletium tortuosum

article published in 2018

Natural products in anti-obesity therapy.

scientific article published on 07 July 2011

Novel Natural Products for Healthy Ageing from the Mediterranean Diet and Food Plants of Other Global Sources-The MediHealth Project.

scientific article published on 6 May 2018

Osmitopsis asteriscoides (Asteraceae)-the antimicrobial activity and essential oil composition of a Cape-Dutch remedy.

scientific article published in October 2003

Pharmacological actions of the South African medicinal and functional food plant Sceletium tortuosum and its principal alkaloids

scientific article (publication date: 11 October 2011)

Phytochemistry and in vitro pharmacological activities of South African Vitex (Verbenaceae) species.

scientific article published on 16 July 2008

Plant-based antimicrobial studies--methods and approaches to study the interaction between natural products.

scientific article published on 31 January 2011

Polymeric plant-derived excipients in drug delivery.

scientific article published on 16 July 2009

Potential Herb-Drug Pharmacokinetic Interactions between African Wild Olive Leaf Extract and Selected Antihypertensive Drugs.

scientific article

Rapid analysis of the skin irritant p-phenylenediamine (PPD) in henna products using atmospheric solids analysis probe mass spectrometry

scientific article published on 12 May 2016

Safety and efficacy of Sclerocarya birrea (A.Rich.) Hochst (Marula) oil: A clinical perspective.

scientific article

Sceletium--a review update

scientific article

Simple 1,4-benzoquinones with antibacterial activity from stems and leaves of Gunnera perpensa.

scientific article published in August 2005

Skullcap and germander: preventing potential toxicity through the application of hyperspectral imaging and multivariate image analysis as a novel quality control method.

scientific article published on 3 September 2014

South African Helichrysum species: a review of the traditional uses, biological activity and phytochemistry.

scientific article published on 19 June 2008

The Application of Vibrational Spectroscopy Techniques in the Qualitative Assessment of Material Traded as Ginseng.

scientific article

The In Vitro Antimicrobial Activity of Lavandula angustifolia Essential Oil in Combination with Other Aroma-Therapeutic Oils

scientific article published on 13 May 2013

The In Vitro Antimicrobial Effects of Lavandula angustifolia Essential Oil in Combination with Conventional Antimicrobial Agents

scientific article

The In Vitro and In Vivo Effects of Hypoxis hemerocallidea on Indinavir Pharmacokinetics: Modulation of Efflux.

scientific article published on 19 April 2018

The additive and synergistic antimicrobial effects of select frankincense and myrrh oils - a combination from the pharaonic pharmacopoeia ⬇️

scientific article published on February 20, 2012

The chemotaxonomic significance of the phenyl pyrone aloenin in the genus Aloe

scientific article published on 01 December 2000

The composition, geographical variation and antimicrobial activity of Lippia javanica (Verbenaceae) leaf essential oils.

scientific article published in January 2005

The impact of plant volatiles on bacterial quorum sensing.

scientific article published on 25 November 2014

The in vitro Antimicrobial Activity and Chemometric Modelling of 59 Commercial Essential Oils against Pathogens of Dermatological Relevance.

scientific article published on 22 August 2016

The in vitro antibiofilm activity of selected culinary herbs and medicinal plants against Listeria monocytogenes.

scientific article published in January 2010

The in vitro antimicrobial activity of Cymbopogon essential oil (lemon grass) and its interaction with silver ions.

scientific article published on 29 April 2015

The in vitro antimicrobial evaluation of commercially essential oils and their combinations against acne.

scientific article

The in vitro biological activity of selected South African Commiphora species.

scientific article

The major flavonoid of Dodonaea angustifolia

scientific article published on 01 September 2000

The occurrence and taxonomic distribution of the anthrones aloin, aloinoside and microdontin in Aloe

scientific article published on 01 January 2001

Toxicity and anti-prolific properties of Xysmalobium undulatum water extract during short term exposure to two-dimensional and three-dimensional spheroid cell cultures.

scientific article

Transport of aspalathin, a Rooibos tea flavonoid, across the skin and intestinal epithelium.

scientific article

Unravelling the complex antimicrobial interactions of essential oils--the case of Thymus vulgaris (thyme).

scientific article published on 6 March 2014

Validation of smoke inhalation therapy to treat microbial infections.

scientific article published on 19 August 2008

Vibrational spectroscopy as a rapid quality control method for Melaleuca alternifolia cheel (tea tree oil).

scientific article published on 10 August 2013

Volatile flavor constituents of fruits from Southern Africa: Mobola plum (Parinari curatellifolia).

scientific article published in April 2004

Warburgia: a comprehensive review of the botany, traditional uses and phytochemistry

scientific article

What the devil is in your phytomedicine? Exploring species substitution in Harpagophytum through chemometric modeling of 1H-NMR and UHPLC-MS datasets.

scientific article published on 17 July 2014

Wound pathogens: Investigating commercial essential oil combinations

scientific article published on 17 December 2018

Xysmalobium undulatum (uzara) - review of an antidiarrhoeal traditional medicine.

scientific article published on September 2014

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