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354 results for “Phenolics”
Single and mixed arbuscular mycorrhizal fungal species inocula have a different effect on the growth and oxidative stress defense in Lolium perenne exposed to phenol and polynuclear aromatic hydrocarbons
<p>Arbuscular mycorrhizal fungi (AMF) are ubiquitous mutualistic plant symbionts which promote plant growth and protect them from abiotic stresses. Studies on AMF-assisted phytoremediation have shown that AMF can increase plant tolerance to the presence of hydrocarbon contaminants by improving plant nutrition status and mitigating oxidative stress. This work aimed to evaluate the impact of single-species or mixed-species AMF inocula, obtained from the contaminated environment (<i>Funneliformis caledonium</i>, <i>Diversispora varaderana</i>, <i>Claroideoglomus walkeri</i>), on a growth, oxidative stress (DNA oxidation and lipid peroxidation) and activity of antioxidative enzymes (superoxide dismutase, catalase, peroxidase) in <i>Lolium perenne</i> cultured in a substrate contaminated with 0/0 - 30/120 mg phenol/polynuclear aromatic hydrocarbons (PAHs) kg<sup>-1</sup>. The assessment of AMF resistance to the presence of contaminants was based on mycorrhizal root colonization, spore production, the level of oxidative stress and antioxidative activity in AMF spores. In contrast to the mixed-species AMF inoculum, single AMF species significantly enhanced the growth of host plants cultured in the contaminated substrate. Their effect on the level of oxidative stress and the activity of antioxidative enzymes in plant tissues differed between the AMF species. Changes in the level of oxidative stress and the activity of antioxidative enzymes in AMF spores in response to contamination also depended on AMF species. Although, the concentration of phenol and PAHs had a negative effect on the production of AMF spores, low (5/20 mg phenol/PAHs kg<sup>-</sup>1) and substrate (15/60 mg phenol/PAHs kg<sup>-1</sup>) contamination stimulated the mycorrhizal colonization of roots. Among the studied AMF species, <i>F. caledonium</i> was the most resistant to phenol and PAHs and showed the highest potential in plant growth promotion. Adverse effects of mixed AMF inoculum on <i>L. perenne</i> growth might result from the competitive associations between the AMF species and excessive development of <i>C. walkeri</i>. Presented results might contribute to the development of functionally customized strategies of AMF-assisted phytoremediation with indigenous AMF inocula, adapted to form mycorrhizal associations in the presence of contaminants, which might enhance phytoremediation more effective than commercial AMF inocula.</p>
Raw NMR FID data of biotransformed phenolic xyloside by Lentinus brumalis
<p>This is NMR FID data of biotransformed phenolic xyloside by Lentinus brumalis.</p> <p>Isolation and structural elucidation of these compounds will be reported in the article titled "Uncovering detoxification enzymes diversity of wood-decaying fungi through qualitative untargeted metabolomics", which will be submitted soon.</p>
dataset for "Importance of phenols from biomass burning for aqSOA formation"
<p>These is dataset for manuscript titled "Importance of phenols from biomass burning for aqSOA formation".</p>
Data from: A shift from phenol to silica-based leaf defenses during long-term soil and ecosystem development
<p>The resource availability hypothesis predicts that plants adapted to infertile soils have high levels of anti-herbivore leaf defenses. This hypothesis has been mostly explored for secondary metabolites such as phenolics, while it remains underexplored for silica-based defenses. We determined leaf concentrations of total phenols and silicon (Si) in plants growing along the 2-million-year Jurien Bay chronosequence, exhibiting an extreme gradient of soil fertility. We found that nitrogen (N) limitation on young soils led to a greater expression of phenol-based defenses, whereas old, phosphorus (P)-impoverished soils favored silica-based defenses. Both defense types were negatively correlated at the community and individual species level. Our results suggest a tradeoff among these two leaf defense strategies based on the strength and type of nutrient limitation, thereby opening up new perspectives for the resource availability hypothesis and plant defense research. This study also highlights the importance of silica-based defenses under low P supply.</p>
Seeds as Potential Sources of Phenolic Compounds and Minerals for Indian population
<p>This is the supplementary information of the paper "Seeds as Potential Sources of Phenolic Compounds and Minerals for Indian population" submitted for publication to the journal "Molecules"</p>
Raw data for standardization of phenolic substrate for serum phenoloxidase from the grub of Oryctes rhinoceros
<p>The raw data consists of absorption maxima and time course of phenoloxidase activity of serum tested with each phenolic substrate.</p>
Modulation of 5-LOX activity and comparison with COX-2 activity by (poly)phenols in cellular models.
<p>5-Lipoxygenase (5-LOX) plays a key role in inflammation through the biosynthesis of leukotrienes and other lipid mediators. Current evidence suggests that dietary (poly)phenols exert a beneficial impact on human health through anti-inflammatory activities. Their mechanisms of action have mostly been associated with the modulation of pro-inflammatory cytokines (TNF-α, IL-1β), prostaglandins (PGE<sub>2</sub>), and the interaction with NF-κB and cyclooxygenase 2 (COX-2) pathways. Much less is known about the 5-lipoxygenase (5-LOX) pathway as a target of dietary (poly)phenols. This systematic review aimed to summarize how dietary (poly)phenols target the 5-LOX pathway in preclinical and human studies. The number of studies identified is low (5, 24, and 127 human, animal, and cellular studies, respectively) compared to the thousands of studies focusing on the COX-2 pathway. Some (poly)phenolics such as caffeic acid, hydroxytyrosol, resveratrol, curcumin, nordihydroguaiaretic acid (NDGA), and quercetin have been reported to reduce the formation of 5-LOX eicosanoids in vitro. However, the in vivo evidence is inconclusive because of the low number of studies and the difficulty of attributing effects to (poly)phenols. Therefore, increasing the number of studies targeting the 5-LOX pathway would largely expand our knowledge on the anti-inflammatory mechanisms of (poly)phenols.</p>
Dataset for "Effects of Copper on the Chemical Kinetics and Brown Carbon Formation in the Aqueous ∙OH oxidation of Phenolic Compounds"
<p>This is the dataset for "Effects of Copper on the Chemical Kinetics and Brown Carbon Formation in the Aqueous ∙OH oxidation of Phenolic Compounds" (Submitted to ESPI). </p>
S30 | PHENANTIOX | A list of Phenolic Antioxidants from KEMI and NILU
<p>This is the collection associated with list S30 PHENANTIOX on the NORMAN Suspect List Exchange.</p> <p><a href="https://www.norman-network.com/?q=suspect-list-exchange">https://www.norman-network.com/?q=suspect-list-exchange</a></p> <p>S30</p> <p>PHENANTIOX</p> <p><strong>A list of Phenolic Antioxidants from KEMI and NILU</strong></p> <p>Phenantiox <a href="https://www.norman-network.com/sites/default/files/files/suspectListExchange/210119Update/PhenolicAntioxidants_KEMI_NILU_Jan2019.csv">CSV</a>, <a href="https://www.norman-network.com/sites/default/files/files/suspectListExchange/210119Update/PhenolicAntioxidants_KEMI_NILU_Jan2019.xlsx">XLSX</a> (23/01/2019) </p> <p>Phenantiox <a href="https://www.norman-network.com/sites/default/files/files/suspectListExchange/210119Update/PhenolicAntioxidants_Jan2019_InChIKeys.txt">InChIKeys</a> (23/01/2019)</p> <p>A list of possible phenolic antioxidants with exposure scores compiled by Stellan Fischer (KEMI) and Pawel Rostkowski (NILU). Mapped to CompTox information using CAS numbers.</p>
Chiral Phosphoric Acid Catalyzed Asymmetric Hydrolysis of Biaryl Oxazepines for the Synthesis of Axially Chiral Biaryl Amino Phenol Derivatives
<p>This folder /DFT_structures/ contains the DFT-optimized geometries (in .xyz format together with the gas-phase energy, E) accompanying the paper</p> <p>"Chiral Phosphoric Acid Catalyzed Asymmetric Hydrolysis of Biaryl Oxazepines for the Synthesis of Axially Chiral Biaryl Amino Phenol Derivatives"</p> <p>Where conformers occur, they are always named from the lowest Gibbs energy to the highest in ascending order from c1 (sometimes omitted), c2, c3, ...</p> <p>This folder contains the following sub-folders:</p> <p>- /irc_movies/ contains movies of the IRC analyses for the rotational barrier TSs;</p> <p>- /structures/ contains the DFT-optimized structures</p>
Phenolic compounds and Aromatic acids emission factors
<p>Primary and secondary emission data of phenolic compounds and Aromatic acids from different fuels combustion.</p>
Fig. 5 in Phenolic compounds from the flowers of Rosa hugonis Hemsl. and their neuroprotective effects
Fig. 5. Effects of compound 5 on PI3K/Akt/GSK-3β signaling pathway in 6- OHDA induced PC12 cells. The levels of total or phosphorylated PDK1, Akt and GSK-3β were identified by Western blot. β-Actin was used as a control.
Fig. 4 in Phenolic compounds from the flowers of Rosa hugonis Hemsl. and their neuroprotective effects
Fig. 4. Effects of compound 5 on 6-OHDA-induced ROS generation. (A) PC12 cell were treated with different concentration of compound 5 before exposure to 6- OHDA for 24 h. Cells were then stained with DCFH-DA. (a) Control; (b) 6-OHDA group; (c) 6-OHDA and 5 μM compound 5 treatment; (d) 6-OHDA and 10 μM compound 5 treatment. (B–C) PC12 cell were treated with different concentration of compound 5 before exposure to 6-OHDA for 24 h. The relative mRNA expression levels of SOD and CAT were determined by RT-qPCR. The values are presented as the mean ± SD (n = 3). *p <0.05 versus 6-OHDA group; #p <0.05 versus control group.
Fig. 3 in Phenolic compounds from the flowers of Rosa hugonis Hemsl. and their neuroprotective effects
Fig. 3. Effects of compound 5 on 6-OHDA-induced PC12 cell injury. (A) PC12 cells were preincubated with different concentration of compound 5 for 30 min and then exposed to 6-OHDA for 24 h. The values are presented as the mean ±SD (n =3). *p <0.05 versus 6-OHDA group; #p <0.05 versus control group. (B) PC12 cells were treated with different concentration of compound 5 for 24 h. The values are presented as the mean ± SD (n = 3). *p <0.05 versus control group. (C) The changes of morphology of PC12 cells in present of compound 5. (a) Control; (b) 6-OHDA group; (c) 6-OHDA and 5 μM compound 5 treatment; (d) 6-OHDA and 10 μM compound 5 treatment.
Fig. 1. Main hop prenylated phenolic compounds A in Multivariate analysis of chemical and genetic diversity of wild Humulus lupulus L. (hop) collected in situ in northern France
Fig. 1. Main hop prenylated phenolic compounds A. Chemical structure of major chalcones and acylphloroglucinols produced by hops and their molecular weight. B. Chromatogram of a crude hydro-ethanolic extract of hops (cultivar Nugget) at 330 nm. XN: xanthohumol, α1: co-humulone; α2: humulone; α3: ad-humulone; β1: colupulone; β2: lupulone; β3: ad-lupulone.
Fig. 4 in Bioactive prenylated phenolic compounds from the aerial parts of Glycyrrhiza uralensis
Fig. 4. The docking model and IC50 values of (1''R, 2''S)-1 and (1''S, 2''R)-1 against 3CLpro and PLpro. Each data point is displayed as the mean SD of three ± independent tests.
Fig. 3 in Bioactive prenylated phenolic compounds from the aerial parts of Glycyrrhiza uralensis
Fig. 3. The comparison of experimental and calculated ECD spectra of (1′′R, 2′′S)-1, (1′′S, 2′′R)-1, and 6.
Fig. 5 in Bioactive prenylated phenolic compounds from the aerial parts of Glycyrrhiza uralensis
Fig. 5. Bioactivity screening of compounds 1-26 [1a, (1''R, 2''S)-1; 1b, (1''S, 2''R)-1]. Each data point is displayed as the mean ± SD of three independent tests. ×: not tested.
Fig. 7. A in MAPKK2/4/5/7-MAPK3-JAZs modulate phenolic acid biosynthesis in Salvia miltiorrhiza
Fig. 7. A proposed model for the roles of SmMAPK3 in S. miltiorrhiza phenolic acid biosynthesis. Model illustrating the roles of SmMAPK3 in S. miltiorrhiza phenolic acid biosynthesis.
Fig. 6 in MAPKK2/4/5/7-MAPK3-JAZs modulate phenolic acid biosynthesis in Salvia miltiorrhiza
Fig. 6. Protein–protein interaction of SmMAPK3 with JA signaling members. Y2H (A) and LCI (B–C) assays to detect the interactions of SmMAPK3 with JAZs.
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