Sw. (Myrtaceae) is a shrub distributed all over South America and Brazil. Its leaves are traditionally used to treat digestive problems and infections. Several biological activities have been reported for extracts, however phytochemical studies are scarce. The present study is on the isolation of compounds from leaf extracts using chromatographic and spectroscopic techniques and evaluation of their antibacterial activity. Araçain, a tyrosol derivative was isolated as a natural product for the first time. Other compounds isolated were ursolic acid, a phaeophorbide and three flavonoids. The extracts were tested for their antimicrobial activity against strains and they showed moderate to high antibacterial activity.

Download full-text PDF

Source
http://dx.doi.org/10.1080/14786419.2019.1672683DOI Listing

Publication Analysis

Top Keywords

araçain tyrosol
8
tyrosol derivative
8
antibacterial activity
8
derivative phytochemicals
4
phytochemicals myrtaceae
4
myrtaceae shrub
4
shrub distributed
4
distributed south
4
south america
4
america brazil
4

Similar Publications

Phenylethanoid glycosides (PhGs) are widely occurring secondary metabolites of medicinal plants with interesting biological activities such as antioxidant, anti-inflammatory, neuroprotective, antiviral, hepatoprotective, immunomodulatory, etc. They are characterized by a structural core formed by a phenethyl alcohol, usually tyrosol or hydroxytyrosol, attached to β-D-glucopyranose via a glycosidic bond. This core is usually further decorated by attached phenolic acids or another saccharide.

View Article and Find Full Text PDF

This study explores approaches to enhancing the biostability of extra virgin olive oil (EVOO) supplemented with olive fruit extract (OFE) enriched with hydroxytyrosol (HTyr). The investigation focuses on prolonged deep frying (DF) conditions at 170 °C and 210 °C, over durations ranging from 3 to 48 h, with the aim of improving sensorial attributes, polyphenolic content, and thermal oxidative stability. Parameters, such as acidity, peroxide value (PV), K, K, ΔK, phenolic compounds, and sensory attributes, were monitored.

View Article and Find Full Text PDF

Complete pathway elucidation of echinacoside in Cistanche tubulosa and de novo biosynthesis of phenylethanoid glycosides.

Nat Commun

January 2025

Modern Research Center for Traditional Chinese Medicine, Beijing Institute of Traditional Chinese Medicine, Beijing University of Chinese Medicine, 102488, Beijing, PR China.

Echinacoside (ECH), one of the most representative phenylethanoid glycosides (PhGs), has considerable neuroprotective effects and is an effective ingredient in numerous commercial drugs. Here, we elucidate the complete ECH biosynthetic pathway in the medicinal plant Cistanche tubulosa. In total, 14 related genes are cloned and functionally characterized.

View Article and Find Full Text PDF

The so-called Mediterranean diet, with olive oil as a key component, is effective in reducing cardiometabolic disease risk. Olive oil consumption improves blood pressure, insulin levels and resistance, supporting heart health and glycemic control. Its phenolic compounds, including oleuropein (OLE), hydroxytyrosol (HT), and tyrosol (TYR) are hypothesized to likely contribute to these benefits.

View Article and Find Full Text PDF

Fungal quorum sensing molecules as potential drugs in the treatment of chronic wounds and their delivery.

Expert Opin Drug Deliv

January 2025

Smart Materials, Istituto Italiano di Tecnologia, Genova, Italy.

Introduction: Chronic non-healing wounds have emerged as a significant global healthcare challenge. Biofilm induced wound infections has been widely acknowledged. Despite the advanced understanding of biofilm formation, the existing approaches for diagnosing biofilms in wounds remain considerably suboptimal.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!