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Sinapic acid

Rossella Russo, Laura Pucci, Lucia Giorgetti, Július Árvay, Francesco Vizzarri, Vincenzo Longo, Luisa Pozzo
Lisosan® Reduction is a plant mixture produced from powder of fermented Triticum aestivum (Lisosan® G), Desmodium adscendens, Malus domestica, Picrorhiza kurroa and Hordeum vulgare. The aim of this study was to characterise the phenolic profile of Lisosan® Reduction and to evaluate the effects of aqueous extract on mice fed a high fat diet (HFD). Syringic acid, trans sinapic acid and neochlorogenic acid were identified by HPLC-DAD to be the dominant polyphenols of Lisosan® Reduction, followed by vitexin, trans p-coumeric acid and trans ferulic acid...
November 15, 2017: Natural Product Research
Ashley E Richardson, Neil D Danielson
Hydrophilic interaction liquid chromatography (HILIC) has become increasingly popular as an alternative to reversed phase LC due to its ease of separating complex polar compound mixtures and the compatibility of the mobile phase with mass spectrometry (MS). Using a plain silica column (150  mm × 4.6  mm), we have shown a mixture containing three hydroxybenzoic acid isomers plus syringic and vanillic acid and three hydroxycinnamic acid isomers plus ferulic and sinapic acid can be separated using a mobile phase comprised of 90% acetonitrile (MeCN) and 10% 20 mM ammonium acetate at pH 6 in under 45 min...
December 15, 2017: Analytica Chimica Acta
Ye-Seul Kim, Jeung-Hee Lee
Combined fractions (H2 O and 30% and 50% ethanol) of crude rapeseed cake extracts with 80% ethanol were hydrolyzed with NaOH solution. The hydrolyzed extract showed significantly higher contents of total phenolics (41.8 mg SAE/g) and sinapic acid (425.8 mg/g), as well as higher 1,1-diphenyl-2-picryl-hydrazyl radical-scavenging capacity (91.98 RSC%) than the crude extract (P < 0.05). Antimicrobial activity of the hydrolyzed extract was remarkably higher than that of the crude extract against selected Gram-positive and Gram-negative bacteria as well as yeast, as determined by the minimum inhibitory concentration method...
November 14, 2017: Journal of Food Science
Bastien Barral, Marc Chillet, Jerome Minier, Mathieu Léchaudel, Sabine Schorr-Galindo
Fusarium ananatum causes fruitlet core rot (FCR) in pineapple (Ananas comosus var. comosus) when the fruit reaches maturity. Hidden symptoms make it difficult to assess the disease, regardless of its stage, and basic questions concerning the involvement of the phenolic compounds in response to infection remain unknown. A direct inoculation method of F. ananatum in pineapple fruitlets was developed to monitor the growth of black spots and the changes in phenolic acids and ascorbic acid concentration under controlled conditions...
December 2017: Fungal Biology
Yuan Gao, Shuai Ma, Meng Wang, Xiao-Yuan Feng
Phenolic acids are thought to be beneficial for human health and responsible for vegetables' health-promoting properties. Free, conjugated, and bound phenolic acids of seven commonly consumed vegetables, including kidney bean, cow pea, snow pea, hyacinth bean, green soy bean, soybean sprouts and daylily, from the regions of Beijing, Hangzhou, and Guangzhou, were identified and quantified by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Three vegetables, namely green soy bean, soybean sprouts, and daylily (Hemerocallisfulva L...
November 1, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Jin-Young Kim, Hye-Youn Kim, Jun-Yeong Jeon, Dong-Min Kim, Yaoyao Zhou, Jae Soung Lee, Heayyean Lee, Hyung-Kyoon Choi
In this study, the effects of coronatine treatment on the growth, comprehensive metabolic profiles, and productivity of bioactive compounds, including phenolics and phytosterols, in whole plant cultures of Lemna paucicostata were investigated using gas chromatography-mass spectrometry (GC-MS) coupled with multivariate statistical analysis. To determine the optimal timing of coronatine elicitation, coronatine was added on days 0, 23, and 28 after inoculation. The total growth of L. paucicostata was not significantly different between the coronatine treated groups and the control...
2017: PloS One
Yong Han, Hong Qiu, Xing Pei, Yigang Fan, Hongyan Tian, Jie Geng
Pyroptosis is a type of programmed cell death, which has been associated with multiple inflammatory diseases including diabetic atherosclerosis (DA). The study aims to explore the role of sinapic acid (SA) in the pyroptosis of macrophages in diabetic atherosclerosis. Our results from the in vivo experiments showed that low-dose (≤ 50 mg/Kg) chronic SA adiministration suppressed serum endothelin 1 (ET-1) and interleukine-1β (IL-1β) contents, pyroptotic death of bone marrow derived macrophages (BMDMs), and the expression of pyroptotic proteins ASC, NRLP3 and Caspase-1...
October 27, 2017: Journal of Cardiovascular Pharmacology
Elise Odinot, Frédéric Fine, Jean-Claude Sigoillot, David Navarro, Oscar Laguna, Alexandra Bisotto, Corinne Peyronnet, Christian Ginies, Jérôme Lecomte, Craig B Faulds, Anne Lomascolo
Rapeseed meal is a cheap and abundant raw material, particularly rich in phenolic compounds of biotechnological interest. In this study, we developed a two-step bioconversion process of naturally occurring sinapic acid (4-hydroxy-3,5-dimethoxycinnamic acid) from rapeseed meal into canolol by combining the complementary potentialities of two filamentous fungi, the micromycete Aspergillus niger and the basidiomycete Neolentinus lepideus. Canolol could display numerous industrial applications because of its high antioxidant, antimutagenic and anticarcinogenic properties...
October 14, 2017: Microorganisms
Thamyris Dias Fabiano Agnes, Gabriela Grassmann Roschel, Inar Alves Castro
N3 FA promote beneficial effects on cardiovascular diseases, but they are highly susceptible to oxidation, which leads to the formation of potentially toxic secondary products. In this study, the antioxidant capacity of natural compounds (sinapic acid and rutin) was evaluated using an accelerated model to oxidize the oils. Five inducers (Temperature, Fe(2+) , AAPH, Ascorbyl palmitate and AMVN) were combined in a factorial design to accelerate the oxidation of three oils (flaxseed, echium and fish) containing different sources of n3 FA...
October 11, 2017: Journal of the Science of Food and Agriculture
Daria Giacomini, Rosario Musumeci, Paola Galletti, Giulia Martelli, Lorenzo Assennato, Gianni Sacchetti, Alessandra Guerrini, Enrico Calaresu, Marianna Martinelli, Clementina Cocuzza
Antimicrobial resistance is one of the major and growing concerns in hospital- and community acquired infections, and new antimicrobial agents are therefore urgently required. It was reported that oxidative stress could contribute to the selection of resistant bacterial strains, since reactive oxygen species (ROS) revealed to be an essential driving force. In the present work 4-alkylidene-azetidinones, a new class of antibacterial agents, were functionalized with phytochemical polyphenolic acids such as protocatechuic, piperonyl, caffeic, ferulic, or sinapic acids and investigated as dual target antibacterial-antioxidant compounds...
September 23, 2017: European Journal of Medicinal Chemistry
Karina Fraige, Alessandra Cristina Dametto, Maria Luiza Zeraik, Larissa de Freitas, Amanda Correia Saraiva, Alexandra Ivo Medeiros, Ian Castro-Gamboa, Alberto José Cavalheiro, Dulce Helena S Silva, Norberto Peporine Lopes, Vanderlan S Bolzani
INTRODUCTION: Byrsonima species have been used in the treatment of gastrointestinal and gynecological inflammations, skin infections and snakebites. Based on their biological activities, it is important to study other organisms from this genus and to identify their metabolites. OBJECTIVES: To determine the metabolic fingerprinting of methanol and ethyl acetate extracts of four Byrsonima species (B. intermedia, B. coccolobifolia, B. verbascifolia and B. sericea) by HPLC-DAD-ESI-MS/MS and evaluate their in vitro antioxidant, anti-glycation, anti-inflammatory and cytotoxic activities...
October 9, 2017: Phytochemical Analysis: PCA
Faraneh Zareiyan, Vahid Rowshan, Atefeh Bahmanzadegan, Ahmad Hatami
The experiment was carried out using the shadow-dried aerial parts including leaves and shoots of Gontscharovia popovii collected in Fars province in order to investigate the polyphenolic compositions, antioxidant activity, total phenolic content and essential oil constituents. The result showed IC50 of 395.77 μg mL(-1) and total phenolic content of about 20.01 mg g(-1) gallic acid equivalent dry weight. It also showed a wild range of polyphenols such as; Gallic acid, catechin, chloregenic acid, rutin, vanillin, trans-Ferulic acid, sinapic acid, coumarin, hesperedin, quercetin, hesperetin, eugenol and carvacrol as the main detected polyphenols...
September 28, 2017: Natural Product Research
Małgorzata Tańska, Natalia Mikołajczak, Iwona Konopka
The aim of the work is to compare the antioxidant activity of 4-vinylguaiacol (4-VQ) and 4-vinylsyringol (4-VS) added to stabilize three (flaxseed, olive and rapeseed) commercial oils. The phenolics were added at concentration of 20, 40 and 80mg per 100g of oil. The oils were oxidized in a Rancimat test at 110°C. The linear dependences between the concentrations of each of these compounds and the induction period (IP) were found. Generally, 4-VQ was more effective, since the determined IP increase after its addition was from 5 to 25-fold higher than for the same addition of 4-VS...
February 1, 2018: Food Chemistry
Yuehan Pang, Sulaiman Ahmed, Yanjie Xu, Trust Beta, Zhiwei Zhu, Yafang Shao, Jinsong Bao
Total phenolic content (TPC), individual phenolic acid and antioxidant capacity of whole grain and bran fraction 18 rices with different bran color were investigated. The levels of TPC in bound fractions were significantly higher than those in the free fractions either in the whole grains or brans. The main bound phenolic acids in white rice samples were ferulic acid, p-coumaric acid, and isoferulic acid, and in pigmented rice samples were ferulic acid, p-coumaric acid, and vanillic acid. The protocatechuic acid and 2,5-dihydroxybenzoic acid were not detected in white samples...
February 1, 2018: Food Chemistry
Oana Ungureanu, Florentina Gatea, Ana Maria Seciu, Eugenia Dumitra Teodor, Isabela Madalina Nicorescu, Gabriel Lucian Radu
Berteroa incana is a wild herb widespread in temperate zones which was practically not studied for its biological effects. Methanolic and aqueous extracts of B. incana were assessed for the content in polyphenols and the related antioxidant and antimicrobial activities and the polysaccharide extract for the content in saccharides and the associated cytostatic effect. The results obtained highlighted that the methanolic extracts of B. incana contain moderate amounts of polyphenols, the most representative been isoquercitrin 4...
September 21, 2017: Natural Product Research
Thi-Kieu-Oanh Nguyen, Arash Jamali, Eric Grand, Kris Morreel, Paulo Marcelo, Eric Gontier, Rebecca Dauwe
The brassicaceous herb, Isatis tinctoria, is an ancient medicinal plant whose rosette leaf extracts have anti-inflammatory and anti-allergic activity. Brassicaceae are known to accumulate a variety of phenylpropanoids in their rosette leaves acting as antioxidants and a UV-B shield, and these compounds often have pharmacological potential. Nevertheless, knowledge about the phenylpropanoid content of I. tinctoria leaves remains limited to the characterization of a number of flavonoids. In this research, we profiled the methanol extracts of I...
September 17, 2017: Phytochemistry
Rurun Wang, Mohammad R Seyedsayamdost
The secondary metabolome of the representative Roseobacter, Phaeobacter inhibens, was examined in response to algal sinapic acid. In addition to roseobacticides, sinapic acid induced the production of two new natural products, roseochelin A and B, which were characterized by NMR and X-ray crystallography. Functional assays showed that roseochelin B binds iron and is algaecidal against the algal host Emiliania huxleyi. It appears to be produced by a rarely observed combination of nonenzymatic and enzymatic transformations...
October 6, 2017: Organic Letters
Sebastian Schwindl, Birgit Kraus, Jörg Heilmann
A methanolic extract of Juglans regia L. leaves was fractioned by various chromatographic techniques yielding a total of 40 metabolites belonging to megastigmane, tetralone, phenylpropanoid, neolignane and juglone glycosides. Ten unknown megastigmane glucoside derivatives (juglanionosides A-K, 1-10) and six unknown tetralone glucoside derivatives (juglanosides J-O, 11-16) together with 24 known compounds - among them 16 described for the first time in Juglans - were isolated. As characteristic structural feature, the previously undescribed compounds showed acylation of the sugar units with sinapic, ferulic, coumaric, benzoic or salicylic acid...
September 7, 2017: Phytochemistry
Rebecca Van Acker, Annabelle Déjardin, Sandrien Desmet, Lennart Hoengenaert, Ruben Vanholme, Kris Morreel, Françoise Laurans, Hoon Kim, Nicholas Santoro, Cliff Foster, Geert Goeminne, Frédéric Légée, Catherine Lapierre, Gilles Pilate, John Ralph, Wout Boerjan
In the search for renewable energy sources, genetic engineering is a promising strategy to improve plant cell wall composition for biofuel and bioproducts generation. Lignin is a major factor determining saccharification efficiency and, therefore, is a prime target to engineer. Here, lignin content and composition were modified in poplar (Populus tremula × Populus alba) by specifically down-regulating CINNAMYL ALCOHOL DEHYDROGENASE1 (CAD1) by a hairpin-RNA-mediated silencing approach, which resulted in only 5% residual CAD1 transcript abundance...
November 2017: Plant Physiology
Franziska Pohl, Marie Goua, Giovanna Bermano, Wendy R Russell, Lorraine Scobbie, Patrícia Maciel, Paul Kong Thoo Lin
Rapeseed pomace (RSP) is a waste product obtained after edible oil production from Brassica napus. Analysis of ubiquitous secondary metabolites in RSP samples (two breeds, harvested in 2012/2014 respectively from North East of Scotland) and their ethanol/water (95:5) Soxhlet extracts were carried out. Soxhlet extraction of the RSP (petroleum ether followed by 95% ethanol) gave a solid extract. LC-MS/MS data of the extracts revealed several secondary metabolites, with Sinapic acid being the most abundant. Strong antioxidant activities of the Soxhlet extracts were confirmed from the results obtained in the FRAP, DPPH and ORAC assays...
January 15, 2018: Food Chemistry
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