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Quercetin glycoside

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https://www.readbyqxmd.com/read/28633497/genome-wide-identification-and-functional-characterization-of-udp-glucosyltransferase-genes-involved-in-flavonoid-biosynthesis-in-glycine-max
#1
Qinggang Yin, Guoan Shen, Shaokang Di, Cunying Fan, Zhenzhan Chang, Yongzhen Pang
Flavonoids, natural products abundant in the model legume Glycine max, confer benefits to plants and animals health. Flavonoids are present in soybean mainly as glycoconjugates. However, the biosynthesis mechanisms of flavonoid glycosides are largely unknown in G. max. In the present study, 212 putative UDP-glycosyltransferase (UGTs) genes were identified in G. max by genome-wide searching. The GmUGT genes were distributed differentially among the twenty chromosomes, and they were expressed in various tissues with distinct expression profile...
June 19, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28623737/rumpictuside-a-unusual-9-10-anthraquinone-glucoside-from-rumex-pictus-forssk
#2
Walaa A El-Kashak, Abdelsamed I Elshamy, Tarik A Mohamed, Abd El-Nasser G El Gendy, Ibrahim A Saleh, Akemi Umeyama
A new 8-ionized hydroxylated 9,10-anthraquinone namely, 1-hydroxy-3-methyl-9,10-anthraquinone-6-O-β-D-glucopyranoside-8-olate (Rumpictuside A, 1) along with five known flavonoids, apigenin 7-O-β-D-glucoside (2), vitexin (3), quercetin 3-O-β-D-glucouronide (4), orientin (5), and isorientin (6) were isolated from Rumex pictus. The structures of isolated compounds were identified by the extensive spectroscopic techniques such as, UV, FT-IR, 1D, 2D NMR and HR-FAB-ESI-MS. The ionized hydroxyl group in the new anthraquinone (1) was rarely found for anthraquinone glycosides isolated from natural sources...
June 9, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28597993/one-step-extraction-and-hydrolysis-of-flavonoid-glycosides-in-rape-bee-pollen-based-on-soxhlet-assisted-matrix-solid-phase-dispersion
#3
Xijuan Tu, Shuangqin Ma, Zhaosheng Gao, Jing Wang, Shaokang Huang, Wenbin Chen
INTRODUCTION: Flavonoids are frequently found as glycosylated derivatives in plant materials. To determine contents of flavonoid aglycones in these matrices, procedures for the extraction and hydrolysis of flavonoid glycosides are required. The current sample preparation method is both labour and time consuming. OBJECTIVE: Develop a modified matrix solid phase dispersion (MSPD) procedure as an alternative methodology for the one-step extraction and hydrolysis of flavonoid glycosides...
June 9, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28572959/bioactive-phytochemicals-in-an-aqueous-extract-of-the-leaves-of-talinum-triangulare
#4
Catherine C Ikewuchi, Jude C Ikewuchi, Mercy O Ifeanacho
An aqueous leaf extract of Talinum triangulare was screened for the presence of bioactive molecules, using gas chromatography coupled with pulse and flame ionization detectors. It had high carotenoids; moderate benzoic acid derivatives, hydroxycinnamates and flavonoids; and low terpenes, alkaloids, phytosterols, allicins, glycosides, saponins, and lignans contents. Ten known carotenoids (mainly 50.42% carotene and 33.30% lycopene), nine benzoic acid derivatives (mainly 84.63% ferulic acid and 11.92% vanillic acid), and six hydroxycinnamates (55...
May 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28569164/omega-3-fatty-acids-phenolic-compounds-and-antioxidant-characteristics-of-chia-oil-supplemented-margarine
#5
Muhammad Nadeem, Muhammad Imran, Imran Taj, Muhammad Ajmal, Muhammad Junaid
BACKGROUND: Chia (Salvia hispanica L.) is known as power house of omega fatty acids which has great health benefits. It contains up to 78% linolenic acid (ω-3) and 18% linoleic acid (ω-6), which could be a great source of omega-3 fatty acids for functional foods. Therefore, in this study, margarines were prepared with supplementation of different concentrations of chia oil to enhance omega-3 fatty acids, antioxidant characteristics and oxidative stability of the product. METHODS: Margarines were formulated from non-hydrogenated palm oil, palm kernel and butter...
May 31, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28561159/new-constituents-from-gymnocarpos-decander
#6
Houria Bechlem, Teresa Mencherini, Mohamed Bouheroum, Samir Benayache, Roberta Cotugno, Alessandra Braca, Nunziatina De Tommasi
The phytochemical investigation of Gymnocarpos decander aerial parts extract afforded two new saponins, 3-O-β-D-glucuronopyranosyl-2β,3β,16α,23-tetrahydroxyolean-12-en-28-O-β-D-apiofuranosyl-(1 → 3)-β-D-xylopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranosyl ester (1), 3-O-β-D-glucuronopyranosyl-2β,3β,16α-trihydroxyolean-12-en-28-O-α-L-rhamnopyranosyl-(1 → 3)-β-D-xylopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranosyl ester (2), and three new flavonol glycosides, isorhamnetin 3-O-2''''-O-acetyl-β-D-xylopyranosyl-(1 → 6)-[β-D-apiofuranosyl-(1 → 2)]-β-D-glucopyranoside (3), isorhamnetin 3-O-2‴-O-acetyl-β-D-xylopyranosyl-(1 → 6)-β-D-glucopyranoside (4), and quercetin 3-O-2‴-O-acetyl-β-D-xylopyranosyl-(1 → 6)-β-D-glucopyranoside (5), together with three known compounds...
May 29, 2017: Planta Medica
https://www.readbyqxmd.com/read/28558824/the-cruciferous-diplotaxis-simplex-phytochemistry-analysis-and-its-protective-effect-on-liver-and-kidney-toxicities-and-lipid-profile-disorders-in-alloxan-induced-diabetic-rats
#7
Hamida Jdir, Rihab Ben Abdallah Kolsi, Sami Zouari, Khaled Hamden, Nacim Zouari, Nahed Fakhfakh
BACKGROUND: Type 2 diabetes mellitus is a prevalent systemic disease affecting an important proportion of the population worldwide. It has been suggested that excessive reactive oxygen species generation and therefore development of an oxidative stress status is a key factor leading to diabetic complications. Accordingly, it seems that medicinal plants can offer a wide range of new antidiabetic drugs. Diplotaxis simplex (Viv.) Spreng. (Brassicaceae) is an edible plant largely distributed in the Mediterranean region...
May 30, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28554615/utilization-of-quercetin-and-quercetin-glycosides-from-onion-allium-cepa-l-solid-waste-as-an-antioxidant-urease-and-xanthine-oxidase-inhibitors
#8
Shivraj Hariram Nile, Arti Shivraj Nile, Young Soo Keum, Kavita Sharma
This study aimed to determine the flavonol glycosides from onion solid waste (OSW) using HPLC analysis, with antioxidant and enzyme inhibitory activities. We found considerable amount of quercetin-4'-O-monoglucoside (QMG: 254.85), quercetin-3,4'-O-diglucoside (QDG: 162.34), quercetin (Q: 60.44), and isorhamnetin-3-glucoside (IMG: 23.92) (mg/100g) dry weight (DW) of OSW. For OSW, the methanol and ethanol showed the strongest antioxidant activities, followed by ethyl acetate, chloroform, and n-hexane extracts...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28550653/phytochemical-profile-and-angiotensin-i-converting-enzyme-ace-inhibitory-activity-of-limonium-michelsonii-lincz
#9
Janar Jenis, Jeong Yoon Kim, Zia Uddin, Yeong Hun Song, Hyeong-Hwan Lee, Ki Hun Park
Members of the genus Limonium are widely used as medicinal herbs due to their health-promoting effects, such as an ability to improve blood circulation by inhibiting angiotensin I converting enzyme (ACE). While the potential of L. michelsonii Lincz. (a medicinal plant endemic to Kazakhstan) to inhibit ACE has been demonstrated, the inhibitory activities of its secondary metabolites have not been explored. In this work, the principal phenolic compounds (1-20) among these metabolites were isolated to determine the components responsible for ACE inhibition...
May 26, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28513167/quercetin-morin-luteolin-and-phloretin-are-dietary-flavonoid-inhibitors-of-monocarboxylate-transporter-6
#10
Robert S Jones, Mark D Parker, Marilyn E Morris
Monocarboxylate transporter 6 (MCT6; SLC16A5) has been recognized for its role as a xenobiotic transporter, with characterized substrates probenecid, bumetanide, and nateglinide. To date, the impact of commonly ingested dietary compounds on MCT6 function has not been investigated, and therefore, the objective of this study was to evaluate a variety of flavonoids for their potential MCT6-specific interactions. Flavonoids are a large group of polyphenolic phytochemicals found in commonly consumed plant-based products that have been recognized for their dietary health benefits...
May 31, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28512639/inhibitory-effect-of-chemical-constituents-isolated-from-artemisia-iwayomogi-on-polyol-pathway-and-simultaneous-quantification-of-major-bioactive-compounds
#11
Yoon Kyoung Lee, Eun Young Hong, Wan Kyunn Whang
Blocking the polyol pathway plays an important role preventing diabetic complications. Therefore, aldose reductase (AR) and advanced glycation endproducts (AGEs) formation has significant effect on diabetic complications. Artemisia iwayomogi has long been used as treatment of various diseases in Korea. However, no literatures have reported on AR and AGEs formation inhibitory activities of A. iwayomogi. For these reasons, we aimed to assess that A. iwayomogi had potential as anti-diabetic complications agents...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28503053/pea-pisum-sativum-and-its-anticancer-activity
#12
REVIEW
Runchana Rungruangmaitree, Wannee Jiraungkoorskul
Pisum sativum (Family: Fabaceae), as known as green pea or garden pea, has long been important in diet due to its content of fiber, protein, starch, trace elements, and many phytochemical substances. It has been shown to possess antibacterial, antidiabetic, antifungal, anti-inflammatory, antihypercholesterolemia, and antioxidant activities and also shown anticancer property. Its nonnutritive biologically active components include alkaloids, flavonoids, glycosides, isoflavones, phenols, phytosterols, phytic acid, protease inhibitors, saponins, and tannins...
January 2017: Pharmacognosy Reviews
https://www.readbyqxmd.com/read/28503048/antifertility-effect-of-bougainvillea-spectabilis-or-paper-flower
#13
REVIEW
Anisa Ghogar, Wannee Jiraungkoorskul
Bougainvillea spectabilis (Family: Nyctaginaceae), commonly referred to as Great Bougainvillea or Paper Flower, is one of the traditional medicinal plants with potential antifertility activity. The aqueous extract and decoction of this plant have been used as fertility control among the tribal people in many countries. Furthermore, it has been shown to possess anticancer, antidiabetic, antihepatotoxic, anti-inflammatory, antihyperlipidemic, antimicrobial, antioxidant, and antiulcer properties. Its phytoconstituents such as alkaloids, essential oils, flavonoids, glycosides, oxalates, phenolics, phlobotannins, quinones, saponins, tannins, and terpenoids were reported as the basis of its efficacious therapeutic properties...
January 2017: Pharmacognosy Reviews
https://www.readbyqxmd.com/read/28497036/reversed-phase-hplc-dad-profiling-of-carotenoids-chlorophylls-and-phenolic-compounds-in-adiantum-capillus-veneris-leaves
#14
Alam Zeb, Fareed Ullah
Adiantum capillus-veneris is important endangered fern species with several medicinal properties. In this study, the leaves samples were extracted and separated using reversed phase HPLC with DAD for carotenoids, chlorophylls and phenolic compounds. Separation of carotenoids and chlorophylls were carried out using a tertiary gradient system of water, MTBE and methanol-water, while a binary gradient system of methanol-water-acetic acid was used for phenolic profiling. Results revealed eight carotenoids, four pheophytins, and two chlorophylls...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28494336/metabolite-profiling-of-flavonols-and-in-vitro-antioxidant-activity-of-young-shoots-of-wild-humulus-lupulus-l-hop
#15
Annalisa Maietti, Virginia Brighenti, Gianpiero Bonetti, Paola Tedeschi, Francesco Pio Prencipe, Stefania Benvenuti, Vincenzo Brandolini, Federica Pellati
Humulus lupulus L., commonly named hop, is well-known for its sedative and estrogenic activity. While hop cones are widely characterized, only few works have been carried out on the young shoots of this plant. In the light of this, the aim of this study was to identify for the first time the flavonoids present in young hop shoots and to compare the composition of samples harvested from different locations in Northern Italy with their antioxidant activity. The samples were extracted by means of dynamic maceration with methanol...
April 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28475935/a-comparative-study-on-the-radioprotective-potential-of-the-polyphenolic-glycoconjugates-from-medicinal-plants-of-rosaceae-and-asteraceae-families-versus-their-aglycones
#16
Magdalena Szejk, Tomasz Poplawski, Anna Czubatka-Bienkowska, Alicja Klaudia Olejnik, Izabela Pawlaczyk-Graja, Roman Gancarz, Halina Malgorzata Zbikowska
Radioprotective potential of the polyphenolic glycoconjugates, isolated from flowers of Sanguisorba officinalis L. (So) and Erigeron canadensis L. (Ec), and from leaves of Fragaria vesca L. (Fv) and Rubus plicatus Whe. Et N. E. (Rp) as well as their aglycones (SoA, EcA, FvA and RpA, respectively), against γ-radiation-induced lipid peroxidation in human plasma and DNA damage in lymphocytes, were investigated in vitro. These properties were assessed by measuring the concentration of thiobarbituric acid reactive substances (TBARS) and using the alkaline comet assay, and were compared to the protective effects of rutin (R) and quercetin (Q)...
June 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28460970/3-4-dihydroxyphenylacetic-acid-is-a-predominant-biologically-active-catabolite-of-quercetin-glycosides
#17
Yue Tang, Sayaka Nakashima, Shunya Saiki, Yui Myoi, Naomi Abe, Shoko Kuwazuru, Beiwei Zhu, Hitoshi Ashida, Yoshiyuki Murata, Yoshimasa Nakamura
Since dietary flavonoid glycosides, including quercetin 4'-glucoside from onion, are poorly absorbed from the gastrointestinal tract, they are converted into smaller phenolic acids, which can be absorbed into the circulation. The purpose of this study was to compare the effects of the major phenolic acid catabolites of quercetin 4'-glucoside, including 3,4-dihydroxyphenylacetic acid (DOPAC), 3-hydroxyphenylacetic acid, 3,4-dihydroxybenzoic acid (protocatechuic acid) and hippuric acid, on the antioxidant activity and phase II cytoprotective enzyme induction in vitro...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28433637/inhibition-of-pro-inflammatory-enzymes-by-medicinal-plants-from-the-argentinean-highlands-puna
#18
Romina Torres-Carro, María Inés Isla, Samanta Thomas-Valdes, Felipe Jiménez-Aspee, Guillermo Schmeda-Hirschmann, María Rosa Alberto
ETHNOPHARMACOLOGICAL RELEVANCE: Human groups in the Argentinean Andes highlands (Puna) selected native plants as anti-inflammatory agents. The indications of use are mainly to relieve pain, in infusions, ethanolic extracts or plasters. AIM OF THE STUDY: The objective of the study was to assess the effect of hydroalcoholic extracts from native highland plants as anti-inflammatory according to the traditional indications of use. The chemical profile of the three most active species was analyzed by HPLC-ESI-MS to get in insight into the constituents and the effects observed, according to the ethnopharmacological information...
April 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28431473/structures-and-bioactivities-of-seven-flavonoids-from-osmanthus-fragrans-jinqiu-essential-oil-extraction-residues
#19
Jiang-Lian Zhou, Xian-Ying Fang, Jing-Qiu Wang, Lin-Guo Zhao, Yi Li, Feng Tang, Yong-De Yue
Osmanthus fragrans are well-known for their fragrance, but it is wasteful if to discard O. fragrans flower after extracting their essential oils. In this paper, we found that O. fragrans flower residues were rich in flavonoids. Six flavonoids and one phenylethanoid glycoside were isolated from the ethanol extract of O. fragrans flower residues, identified as quercetin (1), rutin (2), verbascoside (3), genistin (4), kaempferol (5), isorhamnetin (6) and naringin (7). In bioactivity study, kaempferol (IC50 = 1...
April 21, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28412883/polyphenols-of-virgin-coconut-oil-prevent-pro-oxidant-mediated-cell-death
#20
Soorya Parathodi Illam, Arunaksharan Narayanankutty, Achuthan C Raghavamenon
Virgin coconut oil (VCO), extracted from the fresh coconut kernel, is a food supplement enriched with medium chain saturated fatty acids and polyphenolic antioxidants. It is reported to have several health benefits including lipid lowering, antioxidant and anti-inflammatory activities. The pharmacological benefits of VCO have been attributed to its polyphenol content (VCOP), the mechanistic basis of which is less explored. Liquid chromatography/mass spectroscopy (LC/MS) analysis of VCOP documented the presence of gallic acid, ferulic acid (FA), quercetin, methyl catechin, dihydrokaempferol and myricetin glycoside...
April 26, 2017: Toxicology Mechanisms and Methods
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