keyword
MENU ▼
Read by QxMD icon Read
search

Plant extract

keyword
https://www.readbyqxmd.com/read/27936494/five-new-c19-diterpenoid-alkaloids-from-delphinium-tianshanicum-w-t-wang
#1
By Ji-Fa Zhang, Lian-Hai Shan, Feng Gao, Shuai Huang, Xian-Li Zhou
Five new diterpenoid alkaloids tianshanitine A-E (1-5), along with ten known compounds (6-15), were isolated from the ethanolic extracts of the whole plant of Delphinium tianshanicum W. T. Wang. Their structures were determined based on extensive spectroscopic analyses, including 1D, 2D NMR, HRESIMS, and the structure of tianshanitine C (3) was confirmed by X-ray diffraction analysis. Tianshanitine A (1) is the first example of natural diterpenoid alkaloid containing a benzoyl group at C-1 position. Tianshanitine B (2) is a rare natural diterpenoid alkaloid including a hydroxyl group at C-16 position...
December 9, 2016: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/27936072/delonix-regia-leaf-extract-drle-a-potential-therapeutic-agent-for-cardioprotection
#2
Lung-Shuo Wang, Chun-Ting Lee, Wei-Lieh Su, Shih-Che Huang, Shu-Chi Wang
Delonix regia (Boj. Ex. Hook) is a flowering plant in the pea family found in tropical areas and its leaves are used informally to treat diseases in folk medicine. However, the cardioprotective effects in this plant are still unclear. In this study, we found that the Delonix regia leaf extract (DRLE) (400 mg/kg/d) can reduce the mortality rate in an isoproterenol (ISO)-induced heart injury and hypertrophy mouse model. Decreased serum levels of creatine phosphokinase, LDH, GOT, TNF-alpha and increased nitric oxide levels were found in DRLE-treated ISO-injured mice...
2016: PloS One
https://www.readbyqxmd.com/read/27935764/morphofunctional-renal-alterations-in-progeny-of-mice-fed-rhodiola-kirilowii-extracts-or-epigallocatechin-during-pregnancy-and-lactation
#3
Sławomir Lewicki, Ewa Skopińska-Różewska, Barbara Joanna Bałan, Bolesław Kalicki, Janusz Patera, Jacek Wilczak, Aleksander Wasiutyński, Robert Zdanowski
Treating infections in pregnant patients is potentially dangerous even when herbal medicines are used. Many herbal medicines, among them extracts from plants of Rhodiola genus, have antimicrobial, anti-inflammatory, and immunostimulatory properties owing to their polyphenol content; they may, however, affect fetal development due to their antiangiogenic properties. The aim of this study was to explain whether daily feeding pregnant and lactating mice with 20 mg/kg Rhodiola kirilowii aqueous (RKW) or 50% hydro-alcoholic (RKW-A) extracts, or 0...
December 9, 2016: Journal of Medicinal Food
https://www.readbyqxmd.com/read/27935129/performance-comparison-of-esi-and-apci-in-untargeted-and-targeted-lc-ms-based-metabolomics-analysis-of-grapeberry-metabolites
#4
Mauro Commisso, Andrea Anesi, Silvia Dal Santo, Flavia Guzzo
RATIONALE: Electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) are both used to generate ions for the analysis of metabolites by liquid chromatography/mass spectrometry (LC-MS). We compared the performance of these methods for the analysis of Corvina grapevine berry methanolic extracts, which are complex mixtures of diverse metabolites. METHODS: Corvina berries representing three ripening stages (veraison, early-ripening and full-ripening) were collected during two growing seasons, powdered and extracted with methanol...
December 9, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27934911/effect-of-kelp-waste-extracts-on-the-growth-and-development-of-pakchoi-brassica-chinensis-l
#5
Shiyan Zheng, Jie Jiang, Meilin He, Shanmei Zou, Changhai Wang
To explore the effects of kelp waste extracts (KWE) on the growth and development of Brassia chinensis L., germination and greenhouse experiments were carried out under different concentrations of KWE. The results showed that a higher germination percentage (95%), associated with high germination index (8.70), germination energy (71.67%) and seedling vigor index (734.67), was obtained under a lower KWE concentration (2%) compared with the control. The radicle length (4.97 cm), fresh weight (0.32 g/10 seedlings) and dry weight (0...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27934494/monoterpene-indole-alkaloid-like-compounds-based-on-diversity-enhanced-extracts-of-iridoid-containing-plants-and-their-immune-checkpoint-inhibitory-activity
#6
Haruhisa Kikuchi, Keisuke Ichinohe, Shinya Kida, Shinya Murase, Osamu Yamada, Yoshiteru Oshima
A library of iridoid-conjugated indole alkaloid-like compounds was constructed from diversity-enhanced extracts, which constitutes an approach for increasing the chemical diversity of natural-product-like compounds by combining natural product chemistry and diversity-oriented synthesis. Pharmacological screening of the library revealed a seed compound that can be used for the development of small molecular immune checkpoint inhibitors.
November 18, 2016: Organic Letters
https://www.readbyqxmd.com/read/27934294/label-free-proteomic-reveals-that-cowpea-severe-mosaic-virus-transiently-suppresses-the-host-leaf-protein-accumulation-during-the-compatible-interaction-with-cowpea-vigna-unguiculata-l-walp
#7
Ana L S Paiva, Jose T A Oliveira, Gustavo A de Souza, Ilka M Vasconcelos
Viruses are important plant pathogens that threaten diverse crops worldwide. Diseases caused by Cowpea severe mosaic virus (CPSMV) have drawn attention because of the serious damages they cause to economically important crops including cowpea. This work was undertaken to quantify and identify the responsive proteins of a susceptible cowpea genotype infected with CPSMV, in comparison with mock-inoculated controls, using label-free quantitative proteomics and databanks, aiming at providing insights on the molecular basis of this compatible interaction...
December 2, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27934098/plantmat-a-metabolomics-tool-for-predicting-the-specialized-metabolic-potential-of-a-system-and-for-large-scale-metabolite-identifications
#8
Feng Qiu, Dennis D Fine, Daniel J Wherritt, Zhentian Lei, Lloyd W Sumner
Custom software entitled Plant Metabolite Annotation Toolbox (PlantMAT) has been developed to address the number one grand challenge in metabolomics, which is the large-scale and confident identification of metabolites. PlantMAT uses informed phytochemical knowledge for the prediction of plant natural products such as saponins and glycosylated flavonoids through combinatorial enumeration of aglycone, glycosyl, and acyl subunits. Many of the predicted structures have yet to be characterized and are absent from traditional chemical databases, but have a higher probability of being present in planta...
December 6, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27933902/3-sulfanyl-4-methylpentan-1-ol-in-dry-hopped-beers-first-evidence-of-glutathione-s-conjugates-in-hop-humulus-lupulus-l
#9
Marie-Lucie Kankolongo Cibaka, Laura Decourrière, Celso-José Lorenzo-Alonso, Etienne Bodart, Raphaël Robiette, Sonia Collin
Monovarietal dry-hopped beers were produced with the dual-purpose hop cultivars Amarillo, Hallertau Blanc, and Mosaic. The grapefruit-like 3-sulfanyl-4-methylpentan-1-ol was found in all three beers at concentrations much higher than expected on the basis of the free thiol content in hop. Even cysteinylated precursors proved unable to explain our results. As observed in wine, the occurrence of S-glutathione precursors was therefore suspected in hop. The analytical standards of S-3-(4-methyl-1-hydroxypentyl)glutathione, never described before, and of S-3-(1-hydroxyhexyl)glutathione, previously evidenced in grapes, were chemically synthesized...
November 16, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27932085/development-of-a-sensitive-and-false-positive-free-pma-qpcr-viability-assay-to-quantify-vbnc-escherichia-coli-and-evaluate-disinfection-performance-in-wastewater-effluent
#10
Richard Kibbee, Banu Örmeci
The detection and quantification of viable Escherichia coli cells in wastewater treatment plant effluent is very important as it is the main disinfection efficacy parameter for assessing its public health risk and environmental impact. The aim of this study was to develop a sensitive and false-positive free propidium monoazide-quantitative polymerase chain reaction (PMA-qPCR) assay to quantify the viable but non-culturable (VBNC) E. coli present in secondary wastewater effluent after chlorine disinfection. The qPCR target was the E...
December 5, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27931683/in-silico-pass-analysis-and-determination-of-antimycobacterial-antifungal-and-antioxidant-efficacies-of-maslinic-acid-in-an-extract-rich-in-pentacyclic-triterpenoids
#11
Prasad G Jamkhande, Shahbaz K Pathan, Shailesh J Wadher
OBJECTIVE/BACKGROUND: Microbial infections such as tuberculosis is a major cause of mortality worldwide. Plant-derived phytochemicals have a long history of providing much-needed novel therapeutics. Triterpenoids are among the prominent phytochemicals that possess numerous biological activities. Among them is maslinic acid (MA), a biologically active olean-type pentacyclic triterpenoid. In search of a novel antimicrobial agent, we aimed to evaluate the antimicrobial potential of MA. METHODS: Antibacterial and antifungal activity was evaluated through the agar well diffusion method...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/27931178/chemical-composition-and-cytotoxic-properties-of-clinacanthus-nutans-root-extracts
#12
Peik Lin Teoh, Angelina Ying Fang Cheng, Monica Liau, Fui Fui Lem, Grace P Kaling, Fern Nie Chua, Bo Eng Cheong
CONTEXT: Clinacanthus nutans Lindau (Acanthaceae) is a medicinal plant that has been reported to have anti-inflammatory, antiviral, antimicrobial and antivenom activities. In Malaysia, it has been widely claimed to be effective in various cancer treatments but scientific evidence is lacking. OBJECTIVE: This study investigates the chemical constituents, anti-proliferative, and apoptotic properties of C. nutans root extracts. MATERIALS AND METHODS: The roots were subjected to solvent extraction using methanol and ethyl acetate...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27931177/cholinesterase-inhibitory-anti-amyloidogenic-and-neuroprotective-effect-of-the-medicinal-plant-grewia-tiliaefolia-an-in-vitro-and-in-silico-study
#13
Dicson Sheeja Malar, Rajamohamed Beema Shafreen, Shunmugiah Karutha Pandian, Kasi Pandima Devi
CONTEXT: Grewia tiliaefolia Vahl. (Tiliaceae) is a sub-tropical plant used as an indigenous medicine in India. However, its efficacy has not been evaluated against Alzheimer's disease. OBJECTIVES: The objective of this study is to evaluate cholinesterase inhibitory, anti-aggregation and neuroprotective activity of G. tiliaefolia. MATERIALS AND METHOD: Grewia tiliaefolia leaves were collected from Eastern Ghats region, India, and subjected to successive extraction (petroleum ether, chloroform, ethyl acetate, methanol and water)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27931153/the-mutagenic-antimutagenic-and-antioxidant-properties-of-hypericum-lydium
#14
Rukiye Boran, Aysel Ugur
CONTEXT: There is a growing market demand for Hypericum sp., a pharmacologically active plant that has been traditionally used to treat various ailments. However, there have been limited studies on the extract or essential oil of Hypericum lydium Boiss (Hypericaceae). OBJECTIVE: This study investigates for the first time the antioxidant, mutagenic and antimutagenic activity of an ethanol extract of H. lydium. MATERIAL AND METHODS: Ethanol extract from aerial parts of H...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27931115/secretory-structures-and-essential-oil-composition-in-stachys-officinalis-l-trevisan-subsp-officinalis-lamiaceae-from-italy
#15
Claudia Giuliani, Roberto Maria Pellegrino, Roberta Selvaggi, Corrado Tani, Bruno Tirillini, Laura Maleci Bini
The secretory structures and the volatile fraction of Stachys officinalis (L.) Trevisan subsp. officinalis (Lamiaceae) from Italy were studied for the first time. Peltate and small capitate trichomes were observed on the whole plant (leaves and inflorescences). In the peltate trichomes, an unusual polyphenols content was evidenced by the histochemical methods. The volatile fraction was obtained by a solvent extract from the distillation water of leaves and inflorescences and analysed by GC-MS. Forty-four constituents for leaves, representing 94...
December 8, 2016: Natural Product Research
https://www.readbyqxmd.com/read/27930987/antiproliferative-effects-of-extracts-from-salvia-officinalis-l-and-saliva-miltiorrhiza-bunge-on-hepatocellular-carcinoma-cells
#16
Yuanyuan Jiang, Li Zhang, H P Vasantha Rupasinghe
Salvia species have been used as valuable medicinal and herbal plant in many countries. Salvia officinalis L. and Salvia miltiorrhiza Bunge are widely used in traditional medicine for a long time. In the present study, cytotoxicity of ethanol and acetone extracts prepared from leaves and roots of two Salvia species was investigated using hepatocellular carcinoma cells (HepG2) and normal human liver cells (WRL-68). The cytotoxicity and anti-proliferative abilities of the extracts were evaluated by measuring cell viability (MTS assay), lactate dehydrogenase (LDH) leakage, the cellular ATP level, morphological changes using an inverted microscope, and apoptosis using flow cytometry...
December 5, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27930975/adaptogenic-herb-ginseng-panax-as-medical-food-status-quo-and-future-prospects
#17
REVIEW
Seema Patel, Abdur Rauf
Ginseng, an herbaceous plant, belonging to the family Araliaceae is a traditional medicinal herb. Also, it is emerging as a functional food and potent adjunct medicine. Saponin ginsenosides (protopanaxadiol and protopanaxatriol) are the signature phytochemicals of this plant. With the surfacing of scientific validations, ginseng is gaining unprecedented attention from consumers as well as researchers. As a number of drug-herb interaction-caused health issues have emerged, the medicinal relevance of this plant has been critically assessed here...
December 5, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27929093/plant-based-foods-containing-cell-wall-polysaccharides-rich-in-specific-active-monosaccharides-protect-against-myocardial-injury-in-rat-myocardial-infarction-models
#18
Sun Ha Lim, Yaesil Kim, Ki Na Yun, Jin Young Kim, Jung-Hee Jang, Mee-Jung Han, Jongwon Lee
Many cohort studies have shown that consumption of diets containing a higher composition of foods derived from plants reduces mortality from coronary heart disease (CHD). Here, we examined the active components of a plant-based diet and the underlying mechanisms that reduce the risk of CHD using three rat models and a quantitative proteomics approach. In a short-term myocardial infarction (MI) model, intake of wheat extract (WE), the representative cardioprotectant identified by screening approximately 4,000 samples, reduced myocardial injury by inhibiting apoptosis, enhancing ATP production, and maintaining protein homeostasis...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27929032/ecdysteroid-containing-food-supplements-from-cyanotis-arachnoidea-on-the-european-market-evidence-for-spinach-product-counterfeiting
#19
Attila Hunyadi, Ibolya Herke, Katalin Lengyel, Mária Báthori, Zoltán Kele, András Simon, Gábor Tóth, Kálmán Szendrei
Phytoecdysteroids like 20-hydroxyecdysone ("ecdysterone") can exert a mild, non-hormonal anabolic/adaptogenic activity in mammals, and as such, are frequently used in food supplements. Spinach is well-known for its relatively low ecdysteroid content. Cyanotis arachnoidea, a plant native in China, is among the richest sources of phytoecdysteroids, and extracts of this plant are marketed in tons per year amounts via the internet at highly competitive prices. Here we report the investigation of a series of food supplements produced in Germany and claimed to contain spinach extracts...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27928750/phytoextraction-of-arsenic-contaminated-soil-with-pteris-vittata-in-henan-province-china-comprehensive-evaluation-of-remediation-efficiency-correcting-for-atmospheric-depositions
#20
Mei Lei, Xiaoming Wan, Guanghui Guo, Junxing Yang, Tongbin Chen
Research on the appropriate method for evaluating phytoremediation efficiency is limited. A 2-year field experiment was conducted to investigate phytoremediation efficiency using the hyperaccumulator Pteris vittata on an arsenic (As)-contaminated site. The remediation efficiency was evaluated through the removal rate of As in soils and extraction rate of heavy metals in plants. After 2 years of remediation, the concentration of total As in soils decreased from 16.27 mg kg(-1) in 2012 to 14.58 mg kg(-1) in 2014...
December 7, 2016: Environmental Science and Pollution Research International
keyword
keyword
23197
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"