Phenolic composition and antioxidant properties of some traditionally used medicinal plants affected by the extraction time and hydrolysis

2010 ◽  
Vol 22 (2) ◽  
pp. 172-180 ◽  
Author(s):  
Draženka Komes ◽  
Ana Belščak-Cvitanović ◽  
Dunja Horžić ◽  
Gordana Rusak ◽  
Saša Likić ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Antioxidant Properties ◽  
Extraction Time ◽  
Phenolic Composition

scholarly journals A Review on the Biological Activity of Camellia Species

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2178
Author(s):  
Ana Margarida Teixeira ◽  
Clara Sousa
Keyword(s):  
Biological Activity ◽  
Medicinal Plants ◽  
Green Tea ◽  
Antioxidant Properties ◽  
Antitumoral Activity ◽  
Camellia Oleifera ◽  
Camellia Japonica ◽  
Detailed Review ◽  
Additional Information ◽  
Camellia Species

Medicinal plants have been used since antiquity to cure illnesses and injuries. In the last few decades, natural compounds extracted from plants have garnered the attention of scientists and the Camellia species are no exception. Several species and cultivars are widespread in Asia, namely in China, Japan, Vietnam and India, being also identified in western countries like Portugal. Tea and oil are the most valuable and appreciated Camellia subproducts extracted from Camellia sinensis and Camellia oleifera, respectively. The economic impact of these species has boosted the search for additional information about the Camellia genus. Many studies can be found in the literature reporting the health benefits of several Camellia species, namely C. sinensis, C. oleifera and Camellia japonica. These species have been highlighted as possessing antimicrobial (antibacterial, antifungal, antiviral) and antitumoral activity and as being a huge source of polyphenols such as the catechins. Particularly, epicatechin (EC), epigallocatechin (EGC), epicatechin-3-gallate (ECG), and specially epigallocatechin-3-gallate (EGCG), the major polyphenols of green tea. This paper presents a detailed review of Camellia species’ antioxidant properties and biological activity.

scholarly journals Antibacterial, antioxidant, and sun protection potential of selected ethno medicinal plants used for skin infections in Uganda

2021 ◽  
Vol 49 (1) ◽  
Author(s):  
Jane Namukobe ◽  
Peter Sekandi ◽  
Robert Byamukama ◽  
Moses Murungi ◽  
Jennifer Nambooze ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Medicinal Plants ◽  
Inhibitory Concentration ◽  
Antioxidant Properties ◽  
Sun Protection ◽  
Albino Rats ◽  
Skin Infections ◽  
Double Beam ◽  
Protection Potential ◽  
Bacterial Skin Infections

Abstract Background Rural populations in Uganda rely heavily on medicinal plants for the treatment of bacterial skin infections. However, the efficacy of these medicinal plants for their pharmacological action is not known. The study aimed at evaluating the antibacterial, antioxidant, and sun protection potential of Spermacoce princeae, Psorospermum febrifugum, Plectranthus caespitosus, and Erlangea tomentosa extracts. Methods The plant samples were extracted by maceration sequentially using hexane, dichloromethane, ethyl acetate, methanol, and distilled water. Antibacterial activity of each extract was carried out using an agar well diffusion assay against Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli, Klebsiella pneumonie, Streptococcus pyogenes, and Salmonella typhi. Acute dermal toxicity of the aqueous extract of S. princeae and P. febrifugum, and E. tomentosa was assessed in young adult healthy Wistar albino rats at a dose of 8000 and 10,000 mg/kg body weight. The antioxidant activity of each extract was carried out using a 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging assay. The sun protection factor was determined using Shimadzu UltraViolet-Visible double beam spectrophotometer between 290 and 320 nm. Results The plant extracts showed good antibacterial activity against the tested bacterial strains with minimum inhibitory concentration (MIC) ranging between 3.12 and 12.5 mg/ml. There was no significant change in the levels of creatinine, alanine aminotransferase, and aspartate aminotransferase in the rats even at a higher dose of 10,000 mg/kg, which was related to the results of biochemical analysis of the blood samples from the treated and control groups. The aqueous and methanol extracts of S. princeae showed potential antioxidant properties, with half maximal inhibitory concentration (IC50) values of 59.82 and 61.20 μg/ml respectively. The organic and aqueous extracts of P. caespitosus showed high levels of protection against Ultraviolet light with sun protection potential values ranging between 30.67 and 37.84. Conclusions The study demonstrated that the selected medicinal plants possessed good antibacterial, antioxidant, and sun protection properties. Therefore, the plants are alternative sources of antibacterial, antioxidant, and sun protection agents in managing bacterial skin infections.

Effects of potassium supply on growth, gas exchange, phenolic composition, and related antioxidant properties in the forage legume Sulla carnosa

Flora ◽  
2016 ◽  
Vol 223 ◽  
pp. 38-45 ◽  
Author(s):  
Chokri Hafsi ◽  
Hanen Falleh ◽  
Mariem Saada ◽  
Mokded Rabhi ◽  
Khaoula Mkadmini ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Antioxidant Properties ◽  
Phenolic Composition ◽  
Forage Legume ◽  
Potassium Supply

scholarly journals Characterization of phenolic compounds and antioxidant properties of Glycyrrhiza glabra L. rhizomes and roots

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26991-26997 ◽  
Author(s):  
Natália Martins ◽  
Lillian Barros ◽  
Montserrat Dueñas ◽  
Celestino Santos-Buelga ◽  
Isabel C. F. R. Ferreira
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Glycyrrhiza Glabra ◽  
Phenolic Composition ◽  
Glycyrrhiza Glabra L

The present work aims to characterize and quantify the phenolic composition and to evaluate the antioxidant activity of Glycyrrhiza glabra L. (commonly known as licorice) rhizomes and roots.

scholarly journals Use of water-alcohols treatment of medicinal plants under conditions modeling intoxication by lead and cadmium

2021 ◽  
pp. 80-88
Author(s):  
Yu. I. Koval ◽  
T. I. Bokova ◽  
A. F. Petrov
Keyword(s):  
Heavy Metals ◽  
Medicinal Plants ◽  
Blood Serum ◽  
Raw Materials ◽  
Antioxidant Properties ◽  
Live Weight ◽  
The Body ◽  
Laboratory Animals ◽  
Lead And Cadmium ◽  
Water Alcohol

The results of studying the effects of water-alcohol infusions of medicinal plants - rhizomes of thick-leafed incense (Bergenia crasslifolia L. Fritsch), dioica nettle leaves (Urtica dioca L.), burdock roots (Arctium lappa L.), and mother-and-leaf leaves - are presented. ordinary machichi (Tussilago farfara L.) on the organism of laboratory rats under conditions of short-term intoxication with heavy metals in doses of 25 mg of lead and 2.5 mg of cadmium per 1 kg of live weight. In the course of studies it was found that the effect of heavy metals on the body of laboratory animals is selective - the main “depot” of lead was bone tissue, and cadmium - the kidneys and liver. The addition of 1 ml of water-alcohol infusions from medicinal raw materials to the diet of rats as detoxicants caused a decrease in the level of lead in the animal organism to 6.32 times, cadmium to 3.46 times. The greatest detoxification ability was shown by infusions of the roots of burdock and leaves of nettle dioecious. Under the influence of elevated doses of lead and cadmium in laboratory animals there was an increase in heart mass by 40.34 % and spleen by 89.91 %, a decrease in the content of alkaline phosphatase in blood serum by 25.81 %. Water-alcohol infusions normalized the biochemical parameters of rat blood serum. Studies have shown that the infusions of rhizomes of thick-leafed frangipani, burdock roots, dioecious nettles and coltsfoot leaves with antioxidant properties can be the basis for the development of an effective herbal preparation used for the prevention and treatment of animals from intoxication with salts of heavy metals.

scholarly journals Anti-Iipase and antioxidant properties of 30 medicinal plants used in Oaxaca, México

2013 ◽  
Vol 46 (2) ◽  
pp. 153-160 ◽  
Author(s):  
Nemesio Villa-Ruano ◽  
Guilibaldo G Zurita-Vásquez ◽  
Yesenia Pacheco-Hernández ◽  
Martha G Betancourt-Jiménez ◽  
Ramiro Cruz-Durán ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Antioxidant Properties

Phenolic Composition and Antioxidant Properties of Some Spices

2007 ◽  
Vol 2 (5) ◽  
pp. 414-420 ◽  
Author(s):  
M. Muchuweti ◽  
E. Kativu ◽  
C.H. Mupure ◽  
C. Chidewe ◽  
A.R. Ndhlala ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Phenolic Composition
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