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https://www.readbyqxmd.com/read/29236089/sequential-combination-of-microwave-and-ultrasound-assisted-extraction-of-total-flavonoids-from-osmanthus-fragrans-lour-flowers
#1
Jianfeng Yu, Qi Lou, Xiangyang Zheng, Zhengwei Cui, Jian Fu
Microwave-assisted and ultrasound-assisted extraction assays were used to isolate total flavonoids (TF) from Osmanthus fragrans flowers. The effects of the solid-liquid ratio, ethanol concentration, microwave power, microwave extraction time, ultrasonic power and ultrasonic extraction time on the yield of TF were studied. A sequential combination of microwave- and ultrasound-assisted extraction (SC-MUAE) methods was developed, which was subsequently optimized by Box-Behnken design-response surface methodology (BBD-RSM)...
December 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29236070/lc-ms-ms-tandem-mass-spectrometry-for-analysis-of-phenolic-compounds-and-pentacyclic-triterpenes-in-antifungal-extracts-of-terminalia-brownii-fresen
#2
Enass Y A Salih, Pia Fyhrquist, Ashraf M A Abdalla, Abdelazim Y Abdelgadir, Markku Kanninen, Marketta Sipi, Olavi Luukkanen, Mustafa K M Fahmi, Mai H Elamin, Hiba A Ali
Decoctions and macerations of the stem bark and wood of Terminalia brownii Fresen. are used in traditional medicine for fungal infections and as fungicides on field crops and in traditional granaries in Sudan. In addition, T. brownii water extracts are commonly used as sprays for protecting wooden houses and furniture. Therefore, using agar disc diffusion and macrodilution methods, eight extracts of various polarities from the stem wood and bark were screened for their growth-inhibitory effects against filamentous fungi commonly causing fruit, vegetable, grain and wood decay, as well as infections in the immunocompromised host...
December 13, 2017: Antibiotics
https://www.readbyqxmd.com/read/29235295/-study-on-correlation-between-color-and-effective-components-contents-of-glycyrrhiza-uralensis
#3
Ting-Ting Ma, Mu-Xin Gong, Zhi-Min Wang, Rui He, Sha Wu, Cun Zhang, Jing Li, Zhao-Xia Li, Yun Lu, Yong-Song Xu
To explore the correlation between color of Glycyrrhiza uralensis and its quality evaluation,the colors of root bark and transverse section were determined by Precision Color Reader and Visual Analyzer,and the contents of six flavonoids and two saponins in G.uralensis were determined by high performance liquid chromatography(HPLC).The partial least squares regression(PLSR)method was employed to correlate the colors with component contents in G.uralensis. The results showed that there were no significant differences in the colors of root bark but significant or very significant differences(P<0...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29235279/-advance-of-a-representative-traditional-tibetan-medicine-meconopsis-horridula-on-its-phytochemical-and-pharmacological-aspects
#4
REVIEW
Feng Zhao, He-Xin-Ge Zhang, Rui-Feng Bai, Bing-Zhao Tu, Xiao-Li Gao, Peng-Fei Tu, Xing-Yun Chai
Meconopsis horridula is one of alpine plants belonging to family Papaveraceae, mainly distributed in Himalaya Range area. M. horridula is a rare alpine flower, and is a kind of traditional Tibetan medicine, which has been included in more than 40 compound formulae, having efficacies of clearing away heat and alleviating pain, activating blood circulation to remove stasis, traditionally used for the treatment of fractures, injuries, and chest and back pains. Modern research shows that the whole plant of M. horridula contains alkaloids, flavonoids, and terpenes, and its pharmacological activities including antitumor, antivirus and myocardial protection etc...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29235159/the-effect-of-green-tea-ointment-on-episiotomy-pain-and-wound-healing-in-primiparous-women-a-randomized-double-blind-placebo-controlled-clinical-trial
#5
Hadis Shahrahmani, Nourossadat Kariman, Sharareh Jannesari, Mahmoud Rafieian-Kopaei, Moghadameh Mirzaei, Sahar Ghalandari, Nasim Shahrahmani, Gashtasb Mardani
The delayed healing of episiotomy wound and its associated pain is a major problem in obstetrics. Because green tea has analgesic and wound-healing properties, the present study was conducted to determine the effect of green tea ointment on episiotomy pain and wound-healing. The green tea extract was also standardized by measuring its Phenolic and flavonoid compounds, antioxidant activity, and one of its active components, that is, Epigallocatechin gallate. The present clinical trial was conducted on 99 primiparous women visiting Afzalipour Hospital in Kerman in 2015...
December 13, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29234473/synthesis-of-naturally-derived-macromolecules-through-simplified-electrochemically-mediated-atrp
#6
Paweł Chmielarz, Tomasz Pacześniak, Katarzyna Rydel-Ciszek, Izabela Zaborniak, Paulina Biedka, Andrzej Sobkowiak
The flavonoid-based macroinitiator was received for the first time by the transesterification reaction of quercetin with 2-bromoisobutyryl bromide. In accordance with the "grafting from" strategy, a naturally-occurring star-like polymer with a polar 3,3',4',5,6-pentahydroxyflavone core and hydrophobic poly(tert-butyl acrylate) (PtBA) side arms was synthesized via a simplified electrochemically mediated ATRP (seATRP), utilizing only 78 ppm by weight (wt) of a catalytic CuII complex. To demonstrate the possibility of temporal control, seATRP was carried out utilizing a multiple-step potential electrolysis...
2017: Beilstein Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29234421/comparative-phytochemical-profiling-and-in-vitro-antioxidant-activity-of-extracts-from-raw-materials-tissue-cultured-plants-and-callus-of-oroxylum-indicum-l-vent
#7
Piyanuch Rojsanga, Somnuk Bunsupa, Adelheid H Brantner, Pongtip Sithisarn
Extracts from raw materials from different plant parts, tissue-cultured plants, and callus cultures of Oroxylum indicum were analyzed for in vitro antioxidant activities determined by DPPH radical scavenging assay and evaluated for phytochemical profiles by TLC and LC-MS methods. The results were analyzed by principal component analysis (PCA) to evaluate the similarity. Stalk, pedicel, flower, seed, and whole fruit and callus extracts promoted strong antioxidant activity with high total phenolic and total flavonoid contents...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234420/mmp-inhibitory-effects-of-flavonoid-glycosides-from-edible-medicinal-halophyte-limonium-tetragonum
#8
Min Joo Bae, Fatih Karadeniz, Jung Hwan Oh, Ga Hyun Yu, Mi-Soon Jang, Ki-Ho Nam, Youngwan Seo, Chang-Suk Kong
Limonium tetragonum has been well-known for its antioxidative properties as a halophyte. This study investigated the antimetastasis effect of solvent-partitioned L. tetragonum extracts (LTEs) and isolated compounds on HT1080 mouse melanoma cell model with a focus on matrix metalloproteinase (MMP) activity and TIMP and MAPK pathways. Upregulation and stimulation of MMPs result in elevated degradation of extracellular matrix which is part of several complications such as metastasis, cirrhosis, and arthritis. The anti-MMP capacity of LTEs was confirmed by their MMP-inhibitory effects, regulation of MMP and TIMP expression, and suppression of MAPK pathway...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234399/antimicrobial-activities-and-time-kill-kinetics-of-extracts-of-selected-ghanaian-mushrooms
#9
Theresa Appiah, Yaw Duah Boakye, Christian Agyare
The rapid rise of antimicrobial resistance is a worldwide problem. This has necessitated the need to search for new antimicrobial agents. Mushrooms are rich sources of potential antimicrobial agents. This study investigated the antimicrobial properties of methanol extracts of Trametes gibbosa, Trametes elegans, Schizophyllum commune, and Volvariella volvacea. Agar well diffusion, broth microdilution, and time-kill kinetic assays were used to determine the antimicrobial activity of the extracts against selected test organisms...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234389/rapid-screening-of-chemical-constituents-in-rhizoma-anemarrhenae-by-uplc-q-tof-ms-combined-with-data-postprocessing-techniques
#10
Lanlan Shan, Yuanyuan Wu, Lei Yuan, Yani Zhang, Yanyan Xu, Yubo Li
Rhizoma Anemarrhenae, a famous traditional Chinese medicine (TCM), is the dried rhizome of Anemarrhena asphodeloides Bge. (Anemarrhena Bunge of Liliaceae). The medicine presents anti-inflammatory, antipyretic, sedative, and diuretic effects. The chemical constituents of Rhizoma Anemarrhenae are complex and diverse, mainly including steroidal saponins, flavonoids, phenylpropanoids, benzophenones, and alkaloids. In this study, UPLC-Q-TOF/MS was used in combination with data postprocessing techniques, including characteristic fragments filter and neutral loss filter, to rapidly classify and identify the five types of substances in Rhizoma Anemarrhenae...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234387/antioxidant-activity-of-a-geopropolis-from-northeast-brazil-chemical-characterization-and-likely-botanical-origin
#11
Joselena M Ferreira, Caroline C Fernandes-Silva, Antonio Salatino, Dejair Message, Giuseppina Negri
Geopropolis is a product containing wax, plant resin, and soil particles. It is elaborated by stingless bees of tribe Meliponini. Methanol extracts of sample of geopropolis produced by Scaptotrigona postica ("mandaguari") in the state of Rio Grande do Norte (RN, northeast Brazil) were analyzed for the determination of standard parameters (total phenols, total flavonoids, and radical scavenging activity) and chemical characterization by HPLC-DAD-MS/MS analysis. The sample analyzed has high contents of total phenols and flavonoids, as well as high antioxidant activity...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234384/screening-of-natural-bioactive-metabolites-and-investigation-of-antioxidant-antimicrobial-antihyperglycemic-neuropharmacological-and-cytotoxicity-potentials-of-litsea-polyantha-juss-ethanolic-root-extract
#12
Nripendra Nath Biswas, Amit Kumar Acharzo, Shams Anamika, Shamsunnahar Khushi, Bishwajit Bokshi
This study was designed to identify some bioactive phytochemicals from ethanolic extract of roots of Litsea polyantha and to evaluate some of its pharmacological activities. Phytochemical tests indicated the presence of reducing sugar, combined reducing sugar, tannins, flavonoids, alkaloids, terpenoids, and phenol. In the antioxidant assay using 2-diphenyl-1-picryl-hydrazyl (DPPH) free radical scavenging method, the IC50 value was found to be 82.31 μg/mL. Total content of phenolic compounds, flavonoid, and tannin was found to be 152...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234372/hawthorn-leaf-flavonoids-protect-against-diabetes-induced-cardiomyopathy-in-rats-via-pkc-%C3%AE-signaling-pathway
#13
Qing Min, Yuting Bai, Yuchen Zhang, Wei Yu, Minli Zhang, Dongyang Liu, Tingting Diao, Wei Lv
Objectives: DCM has become one of the main reasons of death in diabetic patients. In this study, we aimed to explore the hawthorn leaf flavonoids (HLF) protective effect against diabetes-induced cardiac injury and the underlying mechanisms in experimental rats. Methods: Experimental diabetic model was induced by intraperitoneal injection of streptozotocin (STZ, 40 mg/kg) in rats after feeding with high-fat diet for 8 weeks. The diabetic rats received a 16-week treatment of different doses of HLF (50, 100, and 200)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234365/ethnopharmacological-uses-phytochemistry-and-pharmacological-properties-of-croton-macrostachyus-hochst-ex-delile-a-comprehensive-review
#14
REVIEW
Alfred Maroyi
Croton macrostachyus is widely used as herbal medicine by the indigenous people of tropical Africa. The potential of C. macrostachyus as herbal medicine, the phytochemistry, and pharmacological properties of its parts used as herbal medicines are reviewed. The extensive literature survey revealed that C. macrostachyus is traditionally used to treat or manage at least 81 human and animal diseases and ailments. The species is used as herbal medicine for diseases and ailments such as abdominal pains, cancer, gastrointestinal disorders, malaria, pneumonia, sexually transmitted infections, skin infections, typhoid, and wounds and as ethnoveterinary medicine...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29233744/a-flavonoid-compound-library-screen-revealed-potent-antiviral-activity-of-plant-derived-flavonoids-on-human-enterovirus-a71-replication
#15
Nyo Min, Leong Pok Thim, Regina Ching Hua Lee, Jeffery Seng Eng Khuan, Justin Jang Hann Chu
Hand Foot Mouth Disease (HFMD), resulting from human enterovirus A71 (HEVA71) infection can cause severe neurological complications leading to fatality in young children. Currently, there is no approved antiviral for therapeutic treatment against HEVA71 infection. In this study, a 500-compound flavonoid library was screened to identify potential inhibitors of HEVA71 using high-throughput immunofluorescence-based phenotypic screening method. Two lead flavonoid compounds, ST077124 and ST024734 at the non-cytotoxic concentration of 50 μM were found to be effective antivirals that inhibited replication of HEVA71, reducing infectious viral titers by 3...
December 9, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29233039/characterization-antibacterial-total-antioxidant-scavenging-reducing-power-and-ion-chelating-activities-of-green-synthesized-silver-copper-and-titanium-dioxide-nanoparticles-using-artemisia-haussknechtii-leaf-extract
#16
Mehran Alavi, Naser Karimi
Recently, major problem related to pathogenic bacteria is augmentation of antibiotic resistance which has been changed treatment and recovery of millions of infectious patients. The present study reports an eco-friendly, rapid and easy method for synthesis of silver (Ag), copper (Cu) and titanium dioxide (TiO2) nanoparticles (NPs) using Artemisia haussknechtii leaf aqueous extract with antibacterial activities against multi-drug resistance (MDR) bacteria species. Three different concentrations (0.001, 0.01 and 0...
December 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29232935/extraction-optimization-of-flavonoids-from-hypericum-formosanum-and-matrix-metalloproteinase-1-inhibitory-activity
#17
Ho-Shin Huang, Ean-Tun Liaw
Hypericum formosanum is a valuable herb in Taiwan. In this study, response surface methodology was employed to optimize the ultrasound-assisted extraction of flavonoids from Hypericum formosanum. A central composite design with three variables (ethanol concentration, extraction time, and extraction temperature) was applied. Experimental results were fitted to the second order polynomial model and one-way analysis of variance was used to determine the goodness of fit of the model and the optimal conditions for responses...
December 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29232889/preparation-characterization-and-biological-activities-of-topical-anti-aging-ingredients-in-a-citrus-junos-callus-extract
#18
Deepak Adhikari, Vijay Kumar Panthi, Rudra Pangeni, Hyun Jung Kim, Jin Woo Park
In this study, we prepared and characterized a callus extract from Citrus junos and assessed its utility as a source of topical anti-aging ingredients. Callus extract was produced by aqueous extraction from Citrus junos grown on Murashige and Skoog medium with picloram as a growth regulator. After measuring the total phenolic and flavonoid contents, the major phenolic compound in calli was identified as p-hydroxycinnamoylmalic acid (1) by spectroscopic analysis. The total phenol content in the extract was determined to be 24...
December 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29232373/disentangling-metabolic-functions-of-bacteria-in-the-honey-bee-gut
#19
Lucie Kešnerová, Ruben A T Mars, Kirsten M Ellegaard, Michaël Troilo, Uwe Sauer, Philipp Engel
It is presently unclear how much individual community members contribute to the overall metabolic output of a gut microbiota. To address this question, we used the honey bee, which harbors a relatively simple and remarkably conserved gut microbiota with striking parallels to the mammalian system and importance for bee health. Using untargeted metabolomics, we profiled metabolic changes in gnotobiotic bees that were colonized with the complete microbiota reconstituted from cultured strains. We then determined the contribution of individual community members in mono-colonized bees and recapitulated our findings using in vitro cultures...
December 2017: PLoS Biology
https://www.readbyqxmd.com/read/29230827/occurrence-of-variable-levels-of-health-promoting-fruit-compounds-in-horn-shaped-italian-sweet-pepper-varieties-assessed-by-a-comprehensive-approach
#20
Giuseppe Mennella, Antonietta D'Alessandro, Gianluca Francese, Daniela Fontanella, Mario Parisi, Pasquale Tripodi
BACKGROUND: Cultivated pepper is a rich source of diverse bioactive compounds with potential properties related to the prevention of major degenerative and proliferative diseases. In the present study, 15 sweet pepper varieties highly appreciated on the Italian market, were assessed for variation in the content of ascorbic acid, isoprenoids, flavonoids, morpho-agronomic performances and molecular diversity. RESULTS: The collection under study showed a wide variability for all traits considered...
December 12, 2017: Journal of the Science of Food and Agriculture
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