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Sinapic acid

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https://www.readbyqxmd.com/read/27910755/comparison-of-the-composition-and-antioxidant-activities-of-phenolics-from-the-fruiting-bodies-of-cultivated-asian-culinary-medicinal-mushrooms
#1
Shaoling Lin, Lai Tsz Ching, Xinxin Ke, Peter Chi Keung Cheung
The composition profile and the antioxidant properties of phenolics in water extracts obtained from the fresh fruiting bodies of 4 common cultivated Asian edible mushrooms-Agrocybe aegerita, Pleurotus ostreatus, P. eryngii, and Pholiota nameko were compared. The water extract from A. aegerita (AaE) had the highest total phenolic content (TPC) at 54.18 ± 0.27 gallic acid equivalents (μmol/L)/mg extract (P < 0.05), as measured by the Folin-Ciocalteu method, and consisted of the largest number (including gallic acid, protocatechuic acid, chlorogenic acid, ferulic acid, and sinapic acid) and total amounts of phenolic acids identified by Fourier transform-ion cyclotron resonance mass spectrometry...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27888422/enzymatic-activities-for-lignin-monomer-intermediates-highlight-the-biosynthetic-pathway-of-syringyl-monomers-in-robinia-pseudoacacia
#2
Jun Shigeto, Yukie Ueda, Shinya Sasaki, Koki Fujita, Yuji Tsutsumi
Most of the known 4-coumarate:coenzyme A ligase (4CL) isoforms lack CoA-ligation activity for sinapic acid. Therefore, there is some doubt as to whether sinapic acid contributes to sinapyl alcohol biosynthesis. In this study, we characterized the enzyme activity of a protein mixture extracted from the developing xylem of Robinia pseudoacacia. The crude protein mixture contained at least two 4CLs with sinapic acid 4-CoA ligation activity. The crude enzyme preparation displayed negligible sinapaldehyde dehydrogenase activity, but showed ferulic acid 5-hydroxylation activity and 5-hydroxyferulic acid O-methyltransferase activity; these activities were retained in the presence of competitive substrates (coniferaldehyde and 5-hydroxyconiferaldehyde, respectively)...
November 25, 2016: Journal of Plant Research
https://www.readbyqxmd.com/read/27880018/drought-related-secondary-metabolites-of-barley-hordeum-vulgare-l-leaves-and-their-mqtls
#3
Anna Piasecka, Aneta Sawikowska, Anetta Kuczyńska, Piotr Ogrodowicz, Krzysztof Mikołajczak, Karolina Krystkowiak, Kornelia Gudyś, Justyna Guzy-Wróbelska, Paweł Krajewski, Piotr Kachlicki
Determination of the role of plant secondary metabolites in stress conditions is problematic due to diversity of their structures and complexity of interdependence with different biological pathways. Correlation of the metabolomic data with the genetic background provides essential information on the features of metabolites. LC-MS analysis of leaf metabolites from 100 barley recombinant inbred lines (RILs) revealed that 98 traits among 135 detected phenolic and terpenoid compounds significantly changed the level as a result of drought stress...
November 23, 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/27876336/inhibition-of-protein-glycation-antioxidant-and-antiproliferative-activities-of-carpobrotus-edulis-extracts
#4
Jawhar Hafsa, Khaoula Mkadmini Hammi, Med Raâfet Ben Khedher, Med Ali Smach, Bassem Charfeddine, Khalifa Limem, Hatem Majdoub
Carpobrotus edulis is an important South African medicinal plants used as a food and therapeutic agent in traditional medicine. The aim of this study was to determine the phytochemical content, antioxidant, antiglycation and cytotoxic effect against Human Colon Cancer Cell Line (HCT-116) of aqueous and ethanol-water (1:1v/v) extracts of Carpobrotus edulis.The content of total phenolics and flavonoids in aqueous and ethanol-water extract were 151.99μg and 66.35μg gallic acid equivalents/mg of dry extract, and 38...
November 19, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27815071/cloning-and-functional-characterization-of-a-phenolic-acid-decarboxylase-from-the-liverwort-conocephalum-japonicum
#5
Shuai Gao, Hai-Na Yu, Yi-Feng Wu, Xin-Yan Liu, Ai-Xia Cheng, Hong-Xiang Lou
Some commercially important vinyl derivatives are produced by the decarboxylation of phenolic acids. Enzymatically, this process can be achieved by phenolic acid decarboxylases (PADs), which are able to act on phenolic acid substrates such as ferulic and p-coumaric acid. Although many microbial PADs have been characterized, little is known regarding their plant homologs. Transcriptome sequencing in the liverworts has identified seven putative PADs, which share a measure of sequence identity with microbial PADs, but are typically much longer proteins...
November 1, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27798665/active-sites-of-reduced-epidermal-fluorescence1-ref1-isoforms-contain-amino-acid-substitutions-that-are-different-between-monocots-and-dicots
#6
Tagnon D Missihoun, Simeon O Kotchoni, Dorothea Bartels
Plant aldehyde dehydrogenases (ALDHs) play important roles in cell wall biosynthesis, growth, development, and tolerance to biotic and abiotic stresses. The Reduced Epidermal Fluorescence1 is encoded by the subfamily 2C of ALDHs and was shown to oxidise coniferaldehyde and sinapaldehyde to ferulic acid and sinapic acid in the phenylpropanoid pathway, respectively. This knowledge has been gained from works in the dicotyledon model species Arabidopsis thaliana then used to functionally annotate ALDH2C isoforms in other species, based on the orthology principle...
2016: PloS One
https://www.readbyqxmd.com/read/27719885/contribution-of-individual-phenolics-to-antioxidant-activity-and-in-vitro-digestibility-of-wild-rices-zizania-aquatica-l
#7
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/27677829/plant-phenyl-propanoids-conjugated-silver-nanoparticles-from-edible-plant-suaeda-maritima-l-dumort-inhibit-proliferation-of-k562-human-myeloid-leukemia-cells
#8
Narendran Rajendran, Shankar Subramaniam, Mamilla R Charan Raja, Pemaiah Brindha, Santanu Kar Mahapatra, Aravind Sivasubramanian
The present study portrays the isolation of four phenylpropanoids - ferulic acid (FA), sinapic acid (SA), caffeic acid (CA), and chlorogenic acid (CHA) from the water extract of Suaeda maritima (L.) Dumort, a phytochemically less explored Indian medicinal plant. Further, synthesis and characterization of silver and gold nanoparticles using the isolated phenylpropanoids were done. The silver nanoparticles synthesized from S. maritima water extract along with silver nano-conjugated forms of the isolated compounds exhibited appreciable anti-leukemic activity against K562 cells (human myeloid leukemia)...
September 28, 2016: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/27664833/sinapic-acid-mitigates-gentamicin-induced-nephrotoxicity-and-associated-oxidative-nitrosative-stress-apoptosis-and-inflammation-in-rats
#9
Mushtaq Ahmad Ansari, Mohammad Raish, Ajaz Ahmad, Sheikh Fayaz Ahmad, Shahid Mudassar, Kazi Mohsin, Faiyaz Shakeel, Hesham M Korashy, Saleh A Bakheet
AIMS: In this study, the renoprotective functions of sinapic acid (SA), a polyphenol, on gentamicin-induced nephrotoxicity and the pathway that mediates this function were examined. MAIN METHODS: Kidney function markers (serum urea, uric acid, creatinine, LDH, and γ-GGT) and histopathological examinations of the kidney were used to evaluate gentamicin-induced nephrotoxicity. Oxidative stress markers (lipid peroxidation and total protein), renal nitrosative stress (nitric oxide), antioxidant enzymes (catalase and NP-SH), inflammation markers (NF-κB [p65], TNF-α, IL-6, and myeloperoxidase [MPO]), and apoptotic markers (caspase 3, Bax, and Bcl-2) were also assessed...
September 21, 2016: Life Sciences
https://www.readbyqxmd.com/read/27649250/phenolic-compounds-and-antioxidant-activity-of-phalaenopsis-orchid-hybrids
#10
Truong Ngoc Minh, Do Tan Khang, Phung Thi Tuyen, Luong The Minh, La Hoang Anh, Nguyen Van Quan, Pham Thi Thu Ha, Nguyen Thanh Quan, Nguyen Phu Toan, Abdelnaser Abdelghany Elzaawely, Tran Dang Xuan
Phalaenopsis spp. is the most commercially and economically important orchid, but their plant parts are often left unused, which has caused environmental problems. To date, reports on phytochemical analyses were most available on endangered and medicinal orchids. The present study was conducted to determine the total phenolics, total flavonoids, and antioxidant activity of ethanol extracts prepared from leaves and roots of six commercial hybrid Phalaenopsis spp. Leaf extracts of "Chian Xen Queen" contained the highest total phenolics with a value of 11...
September 14, 2016: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27641473/effect-of-fermentation-and-cooking-on-soluble-and-bound-phenolic-profiles-of-finger-millet-sour-porridge
#11
Molly Gabaza, Habtu Shumoy, Maud Muchuweti, Peter Vandamme, Katleen Raes
The aim of this study was to evaluate the soluble and bound phenolic content of finger millet and the impact of process induced changes on phenolic profiles of their sour porridge. Finger millet porridge and intermediate products were collected from four groups of households in the Hwedza communal area, Zimbabwe, after which soluble and bound phenolic compounds (PC) including condensed tannins (CT) were quantified. Bound PC and CT contributed 95% of the total PC and CT. The CT were only detected in the red varieties...
October 12, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27627797/oxidation-stability-of-o-w-emulsion-prepared-with-linolenic-acid-enriched-diacylglycerol
#12
Jung-Ah Shin, Mi-Young Lee, Ki-Teak Lee
The sn-1,3-regiospecific Rhizomucor miehei lipase (Lipozyme RM IM) was employed to produce structured diacylglycerol (SL-DAG), which contained 67.3 mol% DAG with 27.2 area% of C18:3. To investigate the oxidative stability of the SL-DAG in emulsion form, 5% oil-in-water (O/W) emulsions were prepared with 200 and 400 ppm sinapic acid. It was shown that the hydroperoxide values of the control (without any antioxidant) was the highest (117.7 meq/L) on day 43 of storage and thereafter the value decreased. However, the emulsions with 200 and 400 ppm sinapic acid resulted in slow oxidation degree until day 64 of storage (30...
October 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27622460/kinetic-reaction-mechanism-of-sinapic-acid-scavenging-no2-and-oh-radicals-a-theoretical-study
#13
Yang Lu, AiHua Wang, Peng Shi, Hui Zhang, ZeSheng Li
The mechanism and kinetics underlying reactions between the naturally-occurring antioxidant sinapic acid (SA) and the very damaging ·NO2 and ·OH were investigated through the density functional theory (DFT). Two most possible reaction mechanisms were studied: hydrogen atom transfer (HAT) and radical adduct formation (RAF). Different reaction channels of neutral and anionic sinapic acid (SA-) scavenging radicals in both atmosphere and water medium were traced independently, and the thermodynamic and kinetic parameters were calculated...
2016: PloS One
https://www.readbyqxmd.com/read/27542451/bioactive-compounds-in-blood-oranges-citrus-sinensis-l-osbeck-level-and-intake
#14
Biagio Fallico, Gabriele Ballistreri, Elena Arena, Selina Brighina, Paolo Rapisarda
Both the composition and the intake of antioxidants (anthocyanins, ascorbic acid and hydroxycinnamic acids) were reported for all blood oranges including the single cultivars (Moro, Tarocco and Sanguinello) and industrially produced juices. The mean values of the studied bioactive compounds in the edible part oranges were: 9.6mg/100g of orange edible part for the anthocyanins; 8.1, 0.7, 1.3, 3.8, 2.5mg/100g for total hydroxycinnamic acids, caffeic, sinapic, ferulic and coumaric acids, respectively and 59.1mg/100g for ascorbic acid...
January 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27492045/a-multifunctional-extract-from-corn-steep-liquor-antioxidant-and-surfactant-activities
#15
L Rodríguez-López, X Vecino, L Barbosa-Pereira, A B Moldes, J M Cruz
In the last few years the awareness of consumers and institutions about the impact that our industrial processes has on health and the environment has increased, demanding more natural products. In this work, a multifunctional bioactive extract with surfactant and antioxidant properties, composed mainly of C16 and C18 fatty acids, and phenolic compounds (vanillic acid, p-coumaric acid, ferulic acid, sinapic acid and quercetin) was obtained from corn steep liquor (CSL). Different liquid-liquid extraction protocols were evaluated obtaining a natural extract, which was able to reduce the surface tension of water by more than 30 units, showing antioxidant activity with an EC50 of 8...
September 14, 2016: Food & Function
https://www.readbyqxmd.com/read/27465784/discovery-of-neurotrophic-agents-based-on-hydroxycinnamic-acid-scaffold
#16
Razieh Hosseini, Fatemeh Moosavi, Hamid Rajaian, Tiago Silva, Diogo Magalhães E Silva, Pedro Soares, Luciano Saso, Najmeh Edraki, Ramin Miri, Fernanda Borges, Omidreza Firuzi
The number of people affected by neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease is rapidly increasing owing to the global increase in life expectancy. Small molecules with neurotrophic effects have great potential for management of these neurological disorders. In this study, different (C1-C12) alkyl ester derivatives of hydroxycinnamic acids (HCAs) were synthesized (a total of 30 compounds). The neurotrophic capacity of the test compounds was examined by measuring promotion of survival in serum-deprived conditions and enhancement of nerve growth factor (NGF)-induced neurite outgrowth in PC12 neuronal cells...
July 28, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27375495/the-combined-effects-of-ethylene-and-meja-on-metabolic-profiling-of-phenolic-compounds-in-catharanthus-roseus-revealed-by-metabolomics-analysis
#17
Jia Liu, Yang Liu, Yu Wang, Zhong-Hua Zhang, Yuan-Gang Zu, Thomas Efferth, Zhong-Hua Tang
Phenolic compounds belong to a class of secondary metabolites and are implicated in a wide range of responsive mechanisms in plants triggered by both biotic and abiotic elicitors. In this study, we approached the combinational effects of ethylene and MeJA (methyl jasmonate) on phenolic compounds profiles and gene expressions in the medicinal plant Catharanthus roseus. In virtue of a widely non-targeted metabolomics method, we identified a total of 34 kinds of phenolic compounds in the leaves, composed by 7 C6C1-, 11 C6C3-, and 16 C6C3C6 compounds...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27374527/evaluation-of-nutritional-and-antioxidant-properties-of-the-tropical-fruits-banana-litchi-mango-papaya-passion-fruit-and-pineapple-cultivated-in-r%C3%A3-union-french-island
#18
Axelle Septembre-Malaterre, Giovédie Stanislas, Elisabeth Douraguia, Marie-Paule Gonthier
Much attention is paid to the beneficial action of fruits against obesity-related oxidative stress. This study evaluated nutritional and antioxidant properties of banana, litchi, mango, papaya, passion fruit and pineapple from Réunion French Island. Results showed that total amounts of carbohydrates, vitamin C and carotenoids were 7.7-67.3g glucose equivalent, 4.7-84.9mg ascorbic acid equivalent and 26.6-3829.2μg β-carotene equivalent/100g fresh weight, respectively. Polyphenols were detected as the most abundant antioxidants (33...
December 1, 2016: Food Chemistry
https://www.readbyqxmd.com/read/27362423/hydrogen-peroxide-resistant-cota-and-yjqc-of-bacillus-altitudinis-spores-are-a-promising-biocatalyst-for-catalyzing-reduction-of-sinapic-acid-and-sinapine-in-rapeseed-meal
#19
Yanzhou Zhang, Xunhang Li, Zhikui Hao, Ruchun Xi, Yujie Cai, Xiangru Liao
For the more efficient detoxification of phenolic compounds, a promising avenue would be to develop a multi-enzyme biocatalyst comprising peroxidase, laccase and other oxidases. However, the development of this multi-enzyme biocatalyst is limited by the vulnerability of fungal laccases and peroxidases to hydrogen peroxide (H2O2)-induced inactivation. Therefore, H2O2-resistant peroxidase and laccase should be exploited. In this study, H2O2-stable CotA and YjqC were isolated from the outer coat of Bacillus altitudinis SYBC hb4 spores...
2016: PloS One
https://www.readbyqxmd.com/read/27313041/translation-dynamics-of-single-mrnas-in-live-cells-and-neurons
#20
Bin Wu, Carolina Eliscovich, Young J Yoon, Robert H Singer
Translation is the fundamental biological process converting mRNA information into proteins. Single-molecule imaging in live cells has illuminated the dynamics of RNA transcription; however, it is not yet applicable to translation. Here, we report single-molecule imaging of nascent peptides (SINAPS) to assess translation in live cells. The approach provides direct readout of initiation, elongation, and location of translation. We show that mRNAs coding for endoplasmic reticulum (ER) proteins are translated when they encounter the ER membrane...
June 17, 2016: Science
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