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Syringic acid

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https://www.readbyqxmd.com/read/27914721/corrigendum-to-reversal-of-ethanol-induced-hepatotoxicity-by-cinnamic-and-syringic-acids-in-mice-food-chem-toxicol-98-pt-b-2016-oct-25-119-126
#1
Sheng-Lei Yan, Zhi-Hong Wang, Hsiu-Fang Yen, Yi-Ju Lee, Mei-Chin Yin
No abstract text is available yet for this article.
November 30, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27914260/the-extent-of-fermentative-transformation-of-phenolic-compounds-in-the-bioanode-controls-exoelectrogenic-activity-in-a-microbial-electrolysis-cell
#2
Xiaofei Zeng, Maya A Collins, Abhijeet P Borole, Spyros G Pavlostathis
Phenolic compounds in hydrolysate/pyrolysate and wastewater streams produced during the pretreatment of lignocellulosic biomass for biofuel production present a significant challenge in downstream processes. Bioelectrochemical systems are increasingly recognized as an alternative technology to handle biomass-derived streams and to promote water reuse in biofuel production. Thus, a thorough understanding of the fate of phenolic compounds in bioanodes is urgently needed. The present study investigated the biotransformation of three structurally similar phenolic compounds (syringic acid, SA; vanillic acid, VA; 4-hydroxybenzoic acid, HBA), and their individual contribution to exoelectrogenesis in a microbial electrolysis cell (MEC) bioanode...
November 27, 2016: Water Research
https://www.readbyqxmd.com/read/27877156/a-chitosan-coating-containing-essential-oil-from-origanum-vulgare-l-to-control-postharvest-mold-infections-and-keep-the-quality-of-cherry-tomato-fruit
#3
Tainá A Barreto, Sonalle C A Andrade, Janeeyre F Maciel, Narciza M O Arcanjo, Marta S Madruga, Bruno Meireles, Ângela M T Cordeiro, Evandro L Souza, Marciane Magnani
The efficacy of an edible chitosan coating (CHI; 4 mg/mL) and Origanum vulgare L. essential oil (OVEO; 1.25 μL/mL) for maintaining the quality of cherry tomato fruit during storage at room (25°C; 12 days) and cold (12°C; 24 days) temperatures was assessed. CHI and OVEO in combination showed in vitro fungicidal effects against R. stolonifer and Aspergillus niger. CHI-OVEO coating reduced the incidence of black mold and soft rot caused by these fungi in artificially contaminated cherry tomato fruit during storage at both temperatures...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27862112/qualitative-and-quantitative-analysis-of-major-constituents-from-dazhu-hongjingtian-capsule-by-uplc-q-tof-ms-ms-combined-with-uplc-qqq-ms-ms
#4
Guang-Da Liu, Yi-Wu Zhao, Yan-Jing Li, Xue-Jing Wang, Hai-Hong Si, Wen-Zhe Huang, Zhen-Zhong Wang, Shi-Ping Ma, Wei Xiao
In this work, a sensitive and efficient method was established and validated for qualitative and quantitative analysis of major bioactive constituents in Dazhu Hongjingtian capsule by liquid chromatography tandem mass spectrometry (LC-MS). A total of 32 compounds were tentatively identified using ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF MS/MS). Furthermore, twelve constituents, namely gallic acid, 3,4-dihydroxybenzoic acid, salidroside, p-coumaric acid-4-O-β-D-glucopyranoside, bergeninum, 4-hydroxybenzoic acid, 4-hydroxyphenylacetic acid, syringate, 6''-O-galloylsalidroside, rhodiosin, rhodionin and kaempferol-7-O-α-L-rhamnoside, were simultaneously quantified by the developed ultra-performance liquid chromatography coupled with a triple quadrupole mass spectrometry (UPLC-QQQ-MS/MS) method in 9 min...
November 9, 2016: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/27860429/antibacterial-nanocomposite-bone-filler-based-on-silver-nanoparticles-and-polysaccharides
#5
Davide Porrelli, Andrea Travan, Turco Gianluca, Matteo Crosera, Borgogna Massimiliano, Ivan Donati, Sergio Paoletti, Gianpiero Adami, Eleonora Marsich
Injectable bone fillers represent an attractive strategy for the treatment of bone defects. These injectable materials should be biocompatible, capable of supporting cell growth and possibly able to exert antibacterial effects. In this work, nanocomposite microbeads based on alginate, chitlac, hydroxyapatite and silver nanoparticles were prepared and characterized. The dried microbeads displayed a rapid swelling in contact with simulated body fluid and maintained their integrity for more than 30 days. The evaluation of silver leakage from the microbeads showed that the antibacterial metal is slowly released in saline solution, with less than 6% of silver released after 1 week...
November 15, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27818668/an-approach-based-on-hplc-fingerprint-and-chemometrics-to-quality-consistency-evaluation-of-matricaria-chamomilla-l-commercial-samples
#6
Agnieszka Viapiana, Wiktoria Struck-Lewicka, Pawel Konieczynski, Marek Wesolowski, Roman Kaliszan
Chamomile has been used as an herbal medication since ancient times and is still popular because it contains various bioactive phytochemicals that could provide therapeutic effects. In this study, a simple and reliable HPLC method was developed to evaluate the quality consistency of nineteen chamomile samples through establishing a chromatographic fingerprint, quantification of phenolic compounds and determination of antioxidant activity. For fingerprint analysis, 12 peaks were selected as the common peaks to evaluate the similarities of commercial samples of chamomile obtained from different manufacturers...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27806168/safety-and-efficacy-of-a-volumizing-hyaluronic-acid-filler-for-treatment-of-hiv-associated-facial-lipoatrophy
#7
Derek Ho, Jared Jagdeo
Importance: Facial lipoatrophy (FLA) is associated with human immunodeficiency virus (HIV) disease and the use of highly active antiretroviral therapy. The condition is primarily characterized by facial volume loss that affects the contours of the cheeks, temples, and orbits and may negatively affect patients' adherence to highly active antiretroviral therapy, psychological health, and quality of life. A single treatment of hyaluronic acid (HA) filler, 20 mg/mL, may provide an immediate, natural-appearing facial enhancement outcome...
November 2, 2016: JAMA Dermatology
https://www.readbyqxmd.com/read/27793734/reversal-of-ethanol-induced-hepatotoxicity-by-cinnamic-and-syringic-acids-in-mice
#8
Sheng-Lei Yan, Zhi-Hong Wang, Hsiu-Fang Yen, Yi-Ju Lee, Mei-Chin Yin
Ethanol was used to induce acute hepatotoxicity in mice. Effects of cinnamic acid (CA) and syringic acid (SA) post-intake for hepatic recovery from alcoholic injury was investigated. Ethanol treated mice were supplied by CA or SA at 40 or 80 mg/kg BW/day for 5 days. Results showed that ethanol stimulated protein expression of CYP2E1, p47(phox), gp91(phox), cyclooxygenase-2 and nuclear factor kappa B in liver. CA or SA post-intake restricted hepatic expression of these molecules. Ethanol suppressed nuclear factor erythroid 2-related factor (Nrf2) expression, and CA or SA enhanced Nrf2 expression in cytosolic and nuclear fractions...
October 25, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27790915/exploring-the-colonic-metabolism-of-grape-and-strawberry-anthocyanins-and-their-in-vitro-apoptotic-effects-in-ht-29-colon-cancer-cells
#9
Maria-Carmen López de Las Hazas, Juana I Mosele, Alba Macià, Iziar A Ludwig, Maria-Jose' Motilva
Beneficial properties attributed to the intake of fruit and red wine have been associated with the presence of significant amounts of anthocyanins. However, their low absorption and consequent accumulation in the gut have generated the suspicion that colonic metabolites of anthocyanins are probably involved in their protective effects. Grape pomace and strawberries extracts, rich in malvidin- and pelargonidin-glucoside, respectively, were fermented in-vitro using human feces as microbial inoculum. After 8 h of anaerobic incubation, the anthocyanins were almost completely degraded while their microbial metabolites concentration was highest at 24 h...
October 28, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27777458/antioxidant-properties-and-uplc-ms-ms-profiling-of-phenolics-in-jacquemont-s-hazelnut-kernels-corylus-jacquemontii-and-its-byproducts-from-western-himalaya
#10
Ashish Kumar, Pawan Kumar, Rajkesh Koundal, Vijai K Agnihotri
A rapid and selective analytical method was developed to simultaneously quantify seven polyphenolic compounds (gallic acid, catechin, epicatechin, quercetin, kaempferol, syringic acid and p-coumaric acid). 15 phenolics of diverse groups in 80 % ethanolic extracts of jacquemont's hazelnut (Corylus jacquemontii) kernels and its byproducts from western Himalaya using ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) were identified. The developed analytical method showed excellent linearity, repeatability and accuracy...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27777455/effect-of-microwave-drying-and-oven-drying-on-the-water-activity-color-phenolic-compounds-content-and-antioxidant-activity-of-coconut-husk-cocos-nucifera-l
#11
Lourdes Valadez-Carmona, Rosa María Cortez-García, Carla Patricia Plazola-Jacinto, Hugo Necoechea-Mondragón, Alicia Ortiz-Moreno
The coconut (Cocos nucifera L.) husk is basically composed by fiber and pith material and remained under-utilized. This is an important source of phenolic compounds that could be used as functional ingredients. The aim of this study was to determine the effect of: oven-drying (OD) and microwave drying (MD), on the water activity, color, phenolic compound content and antioxidant activity of coconut husk. The OD was performed at 60 °C for 12 h and MD was performed at 900 W for 10 min. The total phenolic content (TPC) in fresh coconut husk was 64...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27775667/potential-anticancer-effects-of-polyphenols-from-chestnut-shell-extracts-modulation-of-cell-growth-and-cytokinomic-and-metabolomic-profiles
#12
Angela Sorice, Francesco Siano, Francesca Capone, Eliana Guerriero, Gianluca Picariello, Alfredo Budillon, Gennaro Ciliberto, Marina Paolucci, Susan Costantini, Maria Grazia Volpe
In this study, a hydroalcoholic chestnut shell extract was characterized and tested on six different human cell lines. Gallic, ellagic, and syringic acids were the most abundant non-condensed compounds in the chestnut extract, as determined by high performance liquid chromatography (HPLC). Tannins were mainly represented by condensed monomeric units of epigallocatechin and catechin/epicatechin. After 48 h of treatment, only the human hepatoblastoma HepG2 cells reached an inhibition corresponding to IC50 with an increase of apoptosis and mitochondrial depolarization...
October 21, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27771100/centrifuge-less-dispersive-liquid-liquid-microextraction-base-on-the-solidification-of-switchable-solvent-for-rapid-on-site-extraction-of-four-pyrethroid-insecticides-in-water-samples
#13
Lu Hu, Huazi Wang, Heng Qian, Chaoran Liu, Runhua Lu, Sanbing Zhang, Wenfeng Zhou, Haixiang Gao, Donghui Xu
An on-site dispersive liquid liquid microextraction base on the solidification of switchable solvent has been developed as a simple, rapid and eco-friendly sample extraction method for the fast determination of pyrethroid insecticides in aqueous samples using high-performance liquid chromatography with ultraviolet detection. In this extraction method, medium-chain saturated fatty acids (n≥10), which can rapidly solidify at low temperatures (<20°C), were investigated as switchable hydrophilic solvents...
October 11, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27770779/eugenia-aurata-and-eugenia-punicifolia-hbk-inhibit-inflammatory-response-by-reducing-neutrophil-adhesion-degranulation-and-net-release
#14
Mírian Feliciano Costa, Tais Iara Jesus, Bruno Rafael Pereira Lopes, Célio Fernando Figueiredo Angolini, Abner Montagnolli, Lorraine de Paula Gomes, Gabriela Sterle Pereira, Ana Lucia Tasca Gois Ruiz, João Ernesto Carvalho, Marcos Nogueira Eberlin, Catarina Dos Santos, Karina Alves Toledo
BACKGROUND: Eugenia spp. are used in popular medicine in the treatment of pain, diabetes, intestinal disorders and cough. The aim of the work is to evaluate, ex vivo and in vivo, the anti-inflammatory activity of the hydroethanolic extracts of the leaves of Eugenia aurata (EA) and Eugenia punicifolia HBK (EP) upon neutrophils. METHODS: Ex vivo, isolated human neutrophils were sensitized by Eugenia extracts (0.1-1000 μg/mL) and stimulated by PMA. In these conditions, different neutrophil activities related to inflammatory process were measured: adhesion, degranulation and NET release...
October 22, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27770725/transformation-and-products-of-captopril-with-humic-constituents-during-laccase-catalyzed-oxidation-role-of-reactive-intermediates
#15
Penghui Du, He Zhao, Chenming Liu, Qingguo Huang, Hongbin Cao
The transformation of captopril (CAP), a widely-used thiol drug, was studied with the presence of dissolved model humic constituents (HCs) in a laccase-catalyzed system. Reaction products were analyzed by ultra-performance liquid chromatography coupled to time-of-flight mass spectrometry and condensed fukui function computation. CAP reacted with different model HCs in the enzymatic system for 1 h, ranging from 75% (syringic acid) to 96% (p-coumaric acid). In the absence of HCs, only 15% of CAP was removed through self-coupling...
October 14, 2016: Water Research
https://www.readbyqxmd.com/read/27769431/inorganic-arsenic-speciation-in-water-samples-by-miniaturized-solid-phase-microextraction-using-a-new-polystyrene-polydimethyl-siloxane-polymer-in-micropipette-tip-of-syringe-system
#16
Jamshed Ali, Mustafa Tuzen, Tasneem G Kazi, Baki Hazer
The polymer, polystyrene polydimethyl siloxane was loaded into the micropipette tip of the syringe system as an adsorbent to developed miniaturized solid phase microextraction. Standard solutions of arsenate and arsenite were passed through the adsorbent loaded in micropipette tip to check the adsorption behaviors. It was observed that arsenate adsorbed on the polystyrene polydimethyl siloxane in the pH rang of 6-8, while arsenite was directly passed through the micropipette tip of syringe system. The adsorbed arsenate in micropipette tip of syringe system were eluted by 1...
December 1, 2016: Talanta
https://www.readbyqxmd.com/read/27730676/new-biomarkers-for-increased-intestinal-permeability-induced-by-dextran-sodium-sulphate-and-fasting-in-chickens
#17
S Gilani, G S Howarth, S M Kitessa, C D Tran, R E A Forder, R J Hughes
Increased intestinal permeability (IP) can lead to compromised health in chickens. As there is limited literature on in vivo biomarkers to assess increased IP in chickens, the objective of this study was to identify a reliable biomarker of IP using DSS ingestion and fasting models. Male Ross chickens (n = 48) were reared until day 14 on the floor pen in an animal care facility, randomized into the following groups: control, DSS and fasting (each with n = 16), and then placed in metabolism cages. DSS was administered in drinking water at 0...
October 11, 2016: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/27719885/contribution-of-individual-phenolics-to-antioxidant-activity-and-in-vitro-digestibility-of-wild-rices-zizania-aquatica-l
#18
Daniela Sumczynski, Eva Kotásková, Jana Orsavová, Pavel Valášek
Zizania aquatica L. was analysed for total flavonoids, phenolics and HPLC profile in both free and bound phenolic fractions. The highest content of flavonoids (378-455mgRE/kg) was detected in bound fractions, while the highest polyphenols content (1061-2988mgGAE/kg) was determined in free fractions. Additionally, predominant phenolics were identified. To understand the contribution of individual phenolics to an antioxidant activity their mutual correlations were evaluated. Regarding free flavonoids, the main contributors to an antioxidant activity (r>0...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27718119/successful-colonoscopic-fecal-microbiota-transplantation-for-active-ulcerative-colitis-first-report-from-india
#19
Avnish Kumar Seth, Pawan Rawal, Ruchika Bagga, Priti Jain
Forty-four-year-old male with ulcerative colitis (UC) for 11 years reported frequent relapse despite daily sulfasalazine 4 g, azathioprine 125 mg, and rectal 5-aminosalicylic acid. Repeated use of corticosteroids led to cataract. At enrollment, he was passing eight stools a day with blood with a Mayo score of 9 (3+1+3+2). Stool was negative for ova/cysts/acid fast bacilli and Clostridium difficile toxin assay. Rectal biopsy showed cryptitis, crypt abscess, and crypt distortion with no inclusion bodies, and cytomegalovirus DNA was negative...
September 2016: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/27696959/antioxidant-activity-of-commercial-food-grade-tannins-exemplified-in-a-wine-model
#20
Arianna Ricci, Kenneth J Olejar, Giuseppina P Parpinello, Alessia U Mattioli, Nemanja Teslić, Paul A Kilmartin, Andrea Versari
Although commercial tannins are widely used in foods and beverages, an improved understanding of the structure and composition of vegetable tannins is needed to promote the exploitation of agri-food by-products and waste and their valorisation in more sustainable industrial applications. This study aims to characterise the phytochemical composition and antioxidant activity of 13 food grade tannins using multiple analytical approaches, including spectrophotometry and HPLC-ECD to determine the amount of targeted polyphenolic compounds...
December 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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