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Journal articles on the topic 'Caffeate esters'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Hosseini, Razieh, Fatemeh Moosavi, Tiago Silva, et al. "Modulation of ERK1/2 and Akt Pathways Involved in the Neurotrophic Action of Caffeic Acid Alkyl Esters." Molecules 23, no. 12 (2018): 3340. http://dx.doi.org/10.3390/molecules23123340.

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Neurodegenerative diseases affect millions of human lives all over the world. The number of afflicted patients is rapidly growing, and disease-modifying agents are urgently needed. Caffeic acid, an important member of the hydroxycinnamic acid family of polyphenols, has considerable neurotrophic effects. We have previously shown how caffeate alkyl ester derivatives significantly promote survival and differentiation in neuronal cells. In this study, the mechanisms by which these ester derivatives exert their neurotrophic effects are examined. A series of eight caffeic acid esters with different

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2

Gardana, Claudio, Andrea Barbieri, Paolo Simonetti, and Simone Guglielmetti. "Biotransformation Strategy To Reduce Allergens in Propolis." Applied and Environmental Microbiology 78, no. 13 (2012): 4654–58. http://dx.doi.org/10.1128/aem.00811-12.

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ABSTRACTPropolis (bee glue) is a resinous, sticky, dark-colored material produced by honeybees. Propolis today, due to its medicinal properties, is increasingly popular and is extensively used in food, beverages, and cosmetic products. Besides its numerous positive properties, propolis may also have adverse effects, such as, principally, allergic eczematous contact dermatitis in apiarists and in consumers with an allergic predisposition. In this study, we found appropriate conditions for removing caffeate esters, which are the main allergenic components, from raw propolis. The proposed method

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3

Guillon, J., P. Dallemagne, S. Rault, M. Amoros, J. Boustie, and M. Robba. "Synthesis and Anti-HSV-1 Activity of New 3-Amino-3-Arylpropionic Acid Esters." Antiviral Chemistry and Chemotherapy 7, no. 1 (1996): 1–6. http://dx.doi.org/10.1177/095632029600700101.

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A number of 3-methylbut-2-enyl esters of various 3-amino-3-arylpropionic acids have been synthesized and tested for antiviral activity against HSV-1. Many of these compounds, analogues of the 3-methylbut-2-enyl caffeate, isolated from poplar buds, show marked anti-HSV-1 activity and are less toxic than the natural ester.

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4

El Hady, Faten K. Abd, and Ahmed G. Hegazi. "Egyptian Propolis: 2. Chemical Composition, Antiviral And Antimicrobial Activities Of East Nile Delta Propolis." Zeitschrift für Naturforschung C 57, no. 3-4 (2002): 386–94. http://dx.doi.org/10.1515/znc-2002-3-431.

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Three propolis samples from East Nile Delta, Egypt were collected. Propolis samples were investigated by GC/MS,103 compounds were identified, 20 being new for propolis. Dakahlia propolis was a typical poplar propolis but it contained two new caffeate esters and two new triterpenoids. Ismailia propolis was characterized by the presence of new triterpenic acid methyl esters and it did not contain any aromatic acids, esters and flavonoids. Sharkia propolis was characterized by the presence of caffeate esters only, some di- and triterpenoids. The antiviral (Infectious Bursal Disease Virus and Reo-

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5

Esteban-Torres, María, José María Landete, Inés Reverón, Laura Santamaría, Blanca de las Rivas, and Rosario Muñoz. "A Lactobacillus plantarum Esterase Active on a Broad Range of Phenolic Esters." Applied and Environmental Microbiology 81, no. 9 (2015): 3235–42. http://dx.doi.org/10.1128/aem.00323-15.

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ABSTRACTLactobacillus plantarumis the lactic acid bacterial species most frequently found in the fermentation of food products of plant origin on which phenolic compounds are abundant.L. plantarumstrains showed great flexibility in their ability to adapt to different environments and growth substrates. Of 28L. plantarumstrains analyzed, only cultures from 7 strains were able to hydrolyze hydroxycinnamic esters, such as methyl ferulate or methyl caffeate. As revealed by PCR, only these seven strains possessed theest_1092gene. When theest_1092gene was introduced intoL. plantarumWCFS1 orL. lactis

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6

Kulanthaivel, Palaniappan, and M. H. Benn. "A new truxillate and some flavonoid esters from the leaf gum of Traversiabaccharoides Hook. f." Canadian Journal of Chemistry 64, no. 3 (1986): 514–19. http://dx.doi.org/10.1139/v86-081.

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Investigation of the leaf washings of Traversiabaccharoides Hook. f. (Asteraceae: Senecionae) revealed the presence, besides typical cuticular lipids, of labd-13-ene-5,18-diol, 13-epi-ent.-manoyl oxide, n-butyl caffeate and its mono-O-isobutyrate derivatives, an α-truxillate photodimer of n-butyl caffeate (di-n-butyl traversate), (2S)-5,3′,4′-trihydroxy-7-methoxyflavanone, and various derivatives of quercetin including the 3-, 3′-, and 4′-mono-O-isobutyrates.

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7

Greenaway, W., E. Wollenweber, T. Scaysbrook, and F. R. Whatley. "Esters of Caffeic Acid with Aliphatic Alcohols in Bud Exudate of Populus nigra." Zeitschrift für Naturforschung C 43, no. 11-12 (1988): 795–98. http://dx.doi.org/10.1515/znc-1988-11-1201.

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Abstract A fraction of poplar bud exudate was analyzed by GC/MS and the novel aliphatic hydrocarbon esters 2-methylpropyl-, 2-methyl-2-propenyl-, 2-methylbutyl-, 3-methylbutyl-, 2-methyl-2- butenyl-, 4-methylpentyl-, (5)-methylhexyl- and 3,7-dimethyl-2,6-octadienyl(geranyl)- caffeate were identified.

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8

García-Argáez, Aída, M. Pérez-Amador, E. Aguirre-Hernández, and Mariano Martínez-Vázquez. "Two New Caffeate Esters from Roots ofMerremia tuberosaandM. dissecta." Planta Medica 65, no. 07 (1999): 678–79. http://dx.doi.org/10.1055/s-2006-960850.

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9

Aliboni, Andrea. "Propolis from Northern California and Oregon: Chemical Composition, Botanical Origin, and Content of Allergens." Zeitschrift für Naturforschung C 69, no. 1-2 (2014): 10–20. http://dx.doi.org/10.5560/znc.2013-0114.

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Propolis is a beehive product that bees manufacture by mixing their own wax with vegetable resins collected from different species of trees and bushes. The chemical composition of propolis is very variable because it depends on the flora locally available, and specimens from different geographical and climatic areas display unique properties. In this paper, the results of the chemical characterization of some propolis specimens collected in northern California and in Oregon are presented. Their chemical compositions show that all specimens contain resins from poplars of the Tacamahaca section

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10

Móricz, Ágnes M., Márton Baglyas, András Darcsi, József Balla, and Gertrud E. Morlock. "New Antioxidant Caffeate Esters of Fatty Alcohols Identified in Robinia pseudoacacia." Molecules 29, no. 23 (2024): 5673. https://doi.org/10.3390/molecules29235673.

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The stem bark of black locust (Robinia pseudoacacia L.) was extracted, and nine antioxidant compounds (R1–R9) were detected by high-performance thin-layer chromatography combined with the radical scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH•) assay, multi-detection, and heated electrospray high-resolution mass spectrometry. For structure elucidation, the methanolic crude extract was fractionated by solid-phase extraction, and the compounds were isolated by reversed-phase high-performance liquid chromatography with diode array detection. The structures of isolated compounds were elucidated by

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11

Sun, Chunli, Zhengshuang Wu, Ziyan Wang, and Hongcheng Zhang. "Effect of Ethanol/Water Solvents on Phenolic Profiles and Antioxidant Properties of Beijing Propolis Extracts." Evidence-Based Complementary and Alternative Medicine 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/595393.

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Propolis is a natural substance known to be beneficial for human health and used as a folk medicine in many parts of the world. In this study, phenolic profiles and antioxidant properties of Beijing propolis extracted by different ethanol/water solvents were analyzed. Our results reveal that phenolic compounds and antioxidant properties of propolis extracts were significantly dependent on the concentration of ethanol/water solvents. Totally, 29 phenolic compounds were identified: 12 phenolic acids, 13 flavonoids, and 4 phenolic acid esters. In particular, 75 wt.% ethanol/water solvent may be t

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12

Esteban-Torres, María, Inés Reverón, José Miguel Mancheño, Blanca de las Rivas, and Rosario Muñoz. "Characterization of a Feruloyl Esterase from Lactobacillus plantarum." Applied and Environmental Microbiology 79, no. 17 (2013): 5130–36. http://dx.doi.org/10.1128/aem.01523-13.

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ABSTRACTLactobacillus plantarumis frequently found in the fermentation of plant-derived food products, where hydroxycinnamoyl esters are abundant.L. plantarumWCFS1 cultures were unable to hydrolyze hydroxycinnamoyl esters; however, cell extracts from the strain partially hydrolyze methyl ferulate and methylp-coumarate. In order to discover whether the protein Lp_0796 is the enzyme responsible for this hydrolytic activity, it was recombinantly overproduced and enzymatically characterized. Lp_0796 is an esterase that, among other substrates, is able to efficiently hydrolyze the four model substr

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13

Costa, Vânia, Marlene Costa, Francisca Arques, et al. "Cholesteryl Phenolipids as Potential Biomembrane Antioxidants." Molecules 29, no. 20 (2024): 4959. http://dx.doi.org/10.3390/molecules29204959.

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The lipophilization of polyphenols (phenolipids) may increase their affinity for membranes, leading to better antioxidant protection. Cholesteryl esters of caffeic, dihydrocaffeic, homoprotocatechuic and protocatechuic acids were synthetized in a one-step procedure with good to excellent yields of ~50–95%. After evaluation of their radical scavenging capacity by the DPPH method and establishing the anodic peak potential by cyclic voltammetry, their antioxidant capacity against AAPH-induced oxidative stress in soybean PC liposomes was determined. Their interaction with the liposomal membrane wa

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14

Rabiej-Kozioł, Dobrochna, Marek P. Krzemiński, and Aleksandra Szydłowska-Czerniak. "Synthesis of Steryl Hydroxycinnamates to Enhance Antioxidant Activity of Rapeseed Oil and Emulsions." Materials 13, no. 20 (2020): 4536. http://dx.doi.org/10.3390/ma13204536.

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In recent years, steryl esters have found potential applications in food, pharmaceutical and cosmetic industries. Therefore, three hydroxycinnamate steryl esters (HSEs): β-sitosteryl sinapate (β-SSA), β-sitosteryl caffeate (β-SCA), and β-sitosteryl ferulate (β-SFA) were synthesized by chemical approach and their antioxidant activity (AA) were analyzed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) assays. The values of inhibitory concentration (IC50) of each ester needed to inhibit 50% of the DPPH radical (IC50(DPPH) = 238.9, 78.3, 29

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15

Tămaș, Andra, Ioan Bîtcan, Sabina Nițu, et al. "Novel Aromatic Estolide Esters from Biobased Resources by a Green Synthetic Approach." Applied Sciences 14, no. 17 (2024): 7832. http://dx.doi.org/10.3390/app14177832.

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The use of vegetable oils and their derivatives for polymer synthesis has been a major focus in recent years due to their universal availability, low production costs and biodegradability. In this study, the enzymatic synthesis of oligoesters of ricinoleic acid obtained from castor oil combined with three aromatic natural derivatives (cinnamyl alcohol, sinapic acid, and caffeic acid) was investigated. The formation of the reaction products was demonstrated by FT-IR, MALDI-TOF MS and NMR spectroscopy and for the oligo (ricinoleyl)-caffeate the thermal properties and biodegradability in sweet wa

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16

Duthen, Simon, Alice Gadéa, Pascal Trempat, Naoual Boujedaini, and Nicolas Fabre. "Comparison of the Phytochemical Variation of Non-Volatile Metabolites within Mother Tinctures of Arnica montana Prepared from Fresh and Dried Whole Plant Using UHPLC-HRMS Fingerprinting and Chemometric Analysis." Molecules 27, no. 9 (2022): 2737. http://dx.doi.org/10.3390/molecules27092737.

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Arnica montana L. has been recognized for centuries as an herbal remedy to treat wounds and promote healing. It also has a long tradition of use in homeopathy. Depending on its medicinal utilization, standardization regulations allow different manufacturing processes, implying different raw materials, such as the whole arnica plant in its fresh or dried state. In this study, an untargeted metabolomics approach with UHPLC-HRMS/MS was used to cross-compare the phytochemical composition of mother tinctures of A. montana that were prepared from either fresh whole plant (fMT) matter or from oven-dr

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17

Abdolhamid, Alizadeh, Mehdi Khodaei Mohammad, Fakhari Mitra, Abdi Gisya, and Ghouzivand Sohrab. "Chemo and regioselective serendipitous electrochemically initiated spirocyclization of caffeic acid esters with barbituric acid derivatives." Electrochimica Acta 178 (August 12, 2015): 533–40. https://doi.org/10.1016/j.electacta.2015.08.014.

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An interesting sequence of oxidation/Michael addition/oxidation/spirocyclization is observed in the electrolysis of caffeic acid esters in the presence of barbituric acid derivatives leading to the synthesis of a series of novel spirocycles. In an experimentally simple and clean procedure, the electrolyses proceed via a domino of electrochemical (E) and chemical (C) events with employing electrons as the only reagents in aqueous solution without introducing any catalyst or oxidant. From mechanistic point of view, a new type of domino mechanism (ECECi, Ci = spirocyclization) is proven with a un

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18

Hegazi, Ahmed G., and Faten K. Abd El Hady. "Egyptian Propolis: 1-Antimicrobial Activity and Chemical Composition of Upper Egypt Propolis." Zeitschrift für Naturforschung C 56, no. 1-2 (2001): 82–88. http://dx.doi.org/10.1515/znc-2001-1-214.

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Abstract The antimicrobial activity of four propolis samples collected from Upper Egypt against Staphylococcus aureus; Escherichia coli and Candida albicans was evaluated. There was a variation in the antimicrobial activity according to the propolis origin. Banisweif propolis showed the highest antimicrobial activity against Staphylococcus aureus, Escherichia coli and Candida albicans, but Fayoum propolis had moderate activity against all tested pathogens. Propolis collected from Assiut and Souhag gave lower antimicrobial activity. Propolis samples were investigated by GC/MS, 71 compounds were

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19

Jiang, Zhi-Hong, Takashi Tanaka, and Isao Kouno. "Two diastereomeric triterpene-lignan esters having dimeric structure and their biosynthetically related triterpene caffeate from Rhoiptelea chiliantha." Tetrahedron Letters 35, no. 13 (1994): 2031–34. http://dx.doi.org/10.1016/s0040-4039(00)73041-3.

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Rodrigues, Nuno, Khalil Bennis, Delphine Vivier, et al. "Synthesis and structure–activity relationship study of substituted caffeate esters as antinociceptive agents modulating the TREK-1 channel." European Journal of Medicinal Chemistry 75 (March 2014): 391–402. http://dx.doi.org/10.1016/j.ejmech.2014.01.049.

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21

Greenaway, W., S. English, and F. R. Whatley. "Relationships of Populus × acuminata and Populus × generosa with their parental species examined by gas chromatography – mass spectrometry of bud exudates." Canadian Journal of Botany 70, no. 1 (1992): 212–21. http://dx.doi.org/10.1139/b92-029.

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Analysis by gas chromatography – mass spectrometry of bud exudates of Populus deltoides and Populus trichocarpa showed that they each contained a number of different compounds. Exudates of P. trichocarpa contained dihydrochalcones and sesquiterpenols, which were absent from the exudate of P. deltoides, but lacked the flavones, flavanones, and flavanonols present in the exudate of P. deltoides. Exudates of their hybrid, P. × generosa (P. × interamericana), contained compounds typical of both parent plants. Bud exudates of Populus angustifolia and Populus sargentii were qualitatively similar in

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PA, Kroon, Faulds CB, and G. Williamson. "Purification and characterization of a novel esterase induced by growth of Aspergillus niger on sugar‐beet pulp." Biotechnology and Applied Biochemistry 23, no. 3 (1996): 255–62. http://dx.doi.org/10.1111/j.1470-8744.1996.tb00381.x.

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An inducible esterase has been isolated from a liquid culture of Aspergillus niger grown on sugar‐beet pulp. The enzyme was active on methyl esters of cinnamic acids, caffeic > p‐coumaric > ferulic, and is therefore termed a cinnamoyl esterase. The enzyme was not active on methyl sinapinate, a good substrate for ferulic acid esterase III, which was purified previously from A. niger [Faulds and Williamson (1994) Microbiology 140, 779‐787]. With methyl caffeate as substrate the enzyme had temperature and pH optima of 50 degrees C and 6.0 respectively, and a specific activity of 96.9 units

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Cumming, Hemi, and Susan N. Marshall. "Lipase-catalysed synthesis of mono- and di-acyl esters of glyceryl caffeate in propylene carbonate and their antioxidant properties in tuna oil." Journal of Biotechnology 325 (January 2021): 217–25. http://dx.doi.org/10.1016/j.jbiotec.2020.10.021.

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Bouzid, Ourdia, Eric Record, Michèle Asther, et al. "Exploration of members ofAspergillussectionsNigri,Flavi, andTerreifor feruloyl esterase production." Canadian Journal of Microbiology 52, no. 9 (2006): 886–92. http://dx.doi.org/10.1139/w06-046.

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The ability of members of Aspergillus sections Nigri, Flavi, and Terrei to produce feruloyl esterases was studied according to their substrate specificity against synthetic methyl esters of hydroxycinnamic acids. Type A feruloyl esterases (FAEA), induced during growth on cereal-derived products, show a preference for the phenolic moiety of substrates that contain methoxy substitutions, as found in methyl sinapinate, whereas type B feruloyl esterases (FAEB) show a preference for the phenolic moiety of substrates that contain hydroxyl substitutions, as occurs in methyl caffeate. All the strains

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Sun, Liping, Kai Wang, Xiang Xu, Miaomiao Ge, Yifan Chen, and Fuliang Hu. "Potential Protective Effects of Bioactive Constituents from Chinese Propolis against Acute Oxidative Stress Induced by Hydrogen Peroxide in Cardiac H9c2 Cells." Evidence-Based Complementary and Alternative Medicine 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/7074147.

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Chinese propolis (CP) is known as a health food but its beneficial effects in protecting cardiomyocytes remain elusive. Here, we investigated the effects of CP and its active compounds on hydrogen peroxide (H2O2) induced rats cardiomyocytes (H9c2) oxidative injury. Cell viability decreases induced by H2O2 were mitigated by different CP extracts using various solvents. From these active fractions, six active compounds were separated and identified. Among tested isolated compound, the cytoprotective activities of three caffeates, caffeic acid phenethyl ester (CAPE), benzyl caffeate (BZC), and ci

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Araújo, Marianna O., Hilzeth L. Freire Pessoa, Andressa B. Lira, Yunierkis P. Castillo, and Damião P. de Sousa. "Synthesis, Antibacterial Evaluation, and QSAR of Caffeic Acid Derivatives." Journal of Chemistry 2019 (February 12, 2019): 1–9. http://dx.doi.org/10.1155/2019/3408315.

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The present study evaluates the antibacterial effects of a set of 16 synthesized caffeic acid ester derivatives against strains of Staphylococcus aureus and Escherichia coli, as well as discusses their structure-activity relationship (SAR). The antibacterial assays were performed using microdilution techniques in 96-well microplates to determine minimal inhibitory concentration (MIC). The results revealed that five of the compounds present strong to optimum antibacterial effect. Of the sixteen ester derivatives evaluated, the products with alkyl side chains, as propyl caffeate (3), butyl caffe

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FULCERI, Rosella, Jens KNUDSEN, Roberta GIUNTI, Pompeo VOLPE, Alessandra NORI, and Angelo BENEDETTI. "Fatty acyl-CoA–acyl-CoA-binding protein complexes activate the Ca2+ release channel of skeletal muscle sarcoplasmic reticulum." Biochemical Journal 325, no. 2 (1997): 423–28. http://dx.doi.org/10.1042/bj3250423.

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We previously reported that fatty acyl-CoA esters activate ryanodine receptor/Ca2+ release channels in a terminal cisternae fraction from rabbit skeletal muscle [Fulceri, Nori, Gamberucci, Volpe, Giunti and Benedetti (1994) Cell Calcium 15, 109–116]. Skeletal muscle cytosol contains a high-affinity fatty acyl-CoA-binding protein (ACBP) [Knudsen, Hojrup, Hansen, H. O., Hansen, H. F. and Roepstorff (1989) Biochem. J. 262, 513–519]. We show here that palmitoyl-CoA (PCoA) in a complex with a molar excess of bovine ACBP causes a discrete Ca2+ efflux or allows Ca2+ release from the Ca2+-preloaded te

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Solorzano, Eliana Rita, Iole Maria Di Gangi, Marco Roverso, Gabriella Favaro, Sara Bogialli, and Paolo Pastore. "Low Level of Allergens in the Argentinean Plant Zuccagnia punctata Cav.: Screening and Quality Control of North-Western Propolis Using an LC-DAD-QTOF System." Applied Sciences 9, no. 17 (2019): 3546. http://dx.doi.org/10.3390/app9173546.

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North-western Argentinean propolis (NAP), having promising bioactivity, was recently included into the National Food Code. Zuccagnia punctata Cav., a native shrub of north-western Argentina, is one of the prevalent botanical sources of NAPs, but no information on its allergenic constituents was available so far. A liquid chromatography-diode array detector -quadrupole-time of flight system (LC-DAD-QTOF) was used as a screening method for the reliable identification of sensitizing agents belonging to caffeic acid derivatives in Z. punctata and in two NAPs collected in the provinces of Catamarca

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Casula, Mattia, Paola Scano, Cristina Manis, et al. "UHPLC-QTOF/MS Untargeted Lipidomics and Caffeine Carry-Over in Milk of Goats under Spent Coffee Ground Enriched Diet." Applied Sciences 13, no. 4 (2023): 2477. http://dx.doi.org/10.3390/app13042477.

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Supplementing the diet of ruminants with agro-industrial by-products is a common practice. In this study, we applied an untargeted lipidomics approach to study the changes in the milk lipid metabolite profiles linked to the addition of different doses of spent coffee grounds (SCG) to the diet of lactating goats. The carryover of caffeine from feed to milk was also studied. Compared to controls, the milk of goats on the SCG diet showed higher levels of cholesteryl esters, sphingomyelins, and phospholipids, while nonesterified fatty acids were downregulated. After 12 h from the last SCG dose, th

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Chen, Q. Q., H. Pasdar, and X. C. Weng. "Butylated methyl caffeate: a novel antioxidant." Grasas y Aceites 71, no. 2 (2020): 352. http://dx.doi.org/10.3989/gya.0226191.

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A novel caffeic acid derivative, butylated methyl caffeate (BMC), was synthesized via esterification between butylated caffeic acid (BCA) and methanol. Its antioxidant activity was investigated and compared to TBHQ, caffeic acid (CA), methyl caffeate (MC) and BCA through deep-frying, an oven test in oil-in-water emulsions and DPPH radical scavenging. BMC showed the strongest antioxidant activity among the five antioxidants in emulsions and its antioxidant activity was almost as strong as BCA in frying. Its soybean oil-water partition coefficient was 9.18 due to its ester and tert-butyl groups

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Ran, Lu-Xia, Xiang-Ying Wei, Er-Fang Ren, Jian-Feng Qin, Usman Rasheed, and Gan-Lin Chen. "Application of Microbial Fermentation in Caffeine Degradation and Flavor Modulation of Coffee Beans." Foods 14, no. 15 (2025): 2606. https://doi.org/10.3390/foods14152606.

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Coffee is one of the most widely consumed beverages worldwide, primarily due to the stimulating effects attributed to its caffeine content. However, excessive intake of caffeine results in negative effects, including palpitations, anxiety, and insomnia. Therefore, low-caffeine coffee has captivated growing consumer interest, highlighting its significant market potential. Traditional decaffeination methods often lead to non-selective extraction, resulting in a loss of desirable flavor compounds, thereby compromising coffee quality. In recent years, microbial fermentation has emerged as a promis

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Bondareva, E. A., D. V. Reshetnikov, L. G. Burova, et al. "Study of the antibacterial properties of new caffeine derivatives against opportunistic pathogenic bacteria in vitro." Journal of Siberian Medical Sciences 7, no. 1 (2023): 45–52. http://dx.doi.org/10.31549/2542-1174-2023-7-1-45-52.

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Introduction. The resistance of microbes to many classes of antimicrobial drugs is a global threat to human health and necessitates the search for new compounds with antimicrobial activity, with low toxicity and a potentially wide range of biological activity. Aim. To study in vitro the ability of new xanthine derivatives (caffeine, 1-butyltheobromine and 7-butyltheophylline) to inhibit growth Staphylococcus (S.) aureus, Bacillus (B.) cereus, Escherichia (E.) coli and Pseudomonas (P.) aeruginosa. Materials and methods. The antibacterial activity of xanthine derivatives synthesized in the Labor

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Aguirre-Pulido, Martín, Jorge A. González-Sánchez, Luis R. Dzib-Pérez, Montserrat Soria-Castro, Alejandro Ávila-Ortega, and William A. Talavera-Pech. "Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor." Pharmaceutics 14, no. 12 (2022): 2670. http://dx.doi.org/10.3390/pharmaceutics14122670.

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In this paper, a controlled-release system of caffeine as a corrosion inhibitor was obtained by encapsulating it in MCM-41 silica nanoparticles coated with a poly(β-amino ester) (PbAE), a pH-sensible polymer. Encapsulation was verified using Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TGA). The release of caffeine from the nanocontainers was analyzed in electrolytes with pH values of 4, 5, and 7 using UV–Vis, showing a 21% higher release in acidic electrolytes than in neutral electrolytes, corroborating its pH sensitivity. Electrochemical impedance spectroscopy (EIS) a

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Rybnikár, Samuel, and Martin Pogádl. "Summary of legal regulation of additional mandatory particulars for specific types or categories of foods according to the regulation FIC." Potravinarstvo Slovak Journal of Food Sciences 18 (October 15, 2024): 887–98. http://dx.doi.org/10.5219/2024.

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The paper presents a summary of the legal treatment of additional mandatory particulars for specific types or categories of foods under Regulation (EU) 1169/2011 of the European Parliament and of the Council of 25 October 2011 on the provision of food information to consumers, amending Regulations (EC) No 1924/2006 and (EC) No 1925/2006 of the European Parliament and of the Council, and repealing Commission Directive 87/250/EEC, Council Directive 90/496/EEC, Commission Directive 1999/10/EC, Directive 2000/13/EC of the European Parliament and of the Council, Commission Directives 2002/67/EC and

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Pagala, Murali K. D., and Stuart R. Taylor. "Imaging caffeine-induced Ca2+transients in individual fast-twitch and slow-twitch rat skeletal muscle fibers." American Journal of Physiology-Cell Physiology 274, no. 3 (1998): C623—C632. http://dx.doi.org/10.1152/ajpcell.1998.274.3.c623.

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Fast-twitch and slow-twitch rat skeletal muscles produce dissimilar contractures with caffeine. We used digital imaging microscopy to monitor Ca2+ (with fluo 3-acetoxymethyl ester) and sarcomere motion in intact, unrestrained rat muscle fibers to study this difference. Changes in Ca2+ in individual fibers were markedly different from average responses of a population. All fibers showed discrete, nonpropagated, local Ca2+ transients occurring randomly in spots about one sarcomere apart. Caffeine increased local Ca2+ transients and sarcomere motion initially at 4 mM in soleus and 8 mM in extenso

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Mohamadpour, Farzaneh, та Mojtaba Lashkari. "Three-component reaction of β-keto esters, aromatic aldehydes and urea/thiourea promoted by caffeine, a green and natural, biodegradable catalyst for eco-safe Biginelli synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones derivatives under solvent-free conditions". Journal of the Serbian Chemical Society 83, № 6 (2018): 673–84. http://dx.doi.org/10.2298/jsc170712041m.

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Caffeine was found to be a natural and green and biodegradable catalyst for the one-pot, three-component condensation Biginelli reaction of ?-keto esters, aromatic aldehydes and urea/thiourea to afford the corresponding 3,4-dihydropyrimidin-2(1H)-ones/thiones derivatives under solvent-free conditions. The remarkable features of this green procedure are high yields, short reaction times, simplicity of operation and work-up procedures, the availability and easy handling of this solid catalyst, avoidance of hazardous or toxic catalysts and organic solvents and economic availability of the catalys

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Imaizumi, Y., S. Henmi, Y. Uyama, et al. "Characteristics of Ca2+ release for activation of K+ current and contractile system in some smooth muscles." American Journal of Physiology-Cell Physiology 271, no. 3 (1996): C772—C782. http://dx.doi.org/10.1152/ajpcell.1996.271.3.c772.

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Characteristics of Ca2+ release from stores were investigated in strips from ileum and portal vein and in isolated myocytes from ileum and urinary bladder of the guinea pig with use of caffeine and 9-methyl-7-bromoeudistomin D (MBED), a potent releaser of Ca2+ from skeletal muscle sarcoplasmic reticulum. In skinned strips, 1-30 mM caffeine elicited a transient contraction, but 10-300 microM MBED did not. Pretreatment with 100 microM MBED did not affect the subsequent caffeine-induced contraction. In single cells loaded with indo 1-acetoxymethyl ester, 10 mM caffeine increased cytoplasmic Ca2+

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Deng, Kui Lin, Hai Bin Zhong, Yu’e Shi, et al. "Preparation of a Thermo-Sensitive Poly(N-Acryloyl Alanine Methyl Ester) for Controlled Drug Release." Advanced Materials Research 306-307 (August 2011): 675–78. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.675.

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A novel thermo-sensitive poly(N-acryloyl alanine methyl ester) (PAAME) was synthesized by radical polymerization. The structures of the corresponding monomer and polymer have been confirmed by1H NMR and FTIR measurements. The thermo-sensitivity of PAAME was investigated by measuring their lower critical solution temperatures (LCST) in pure water and at different pH solution. The results indicated that PAAME exhibited a reversible thermo-sensibility in its aqueous solutions at 17.7 °C. The drug release study showed that 72% caffeine was released from hydrogel at 37 °C after 6 hours, while more

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Maimulyanti, Askal, and Anton Restu Prihadi. "INTEGRATED EXTRACTION BY PERCOLATION, DISTILLATION, AND SOXHLET EXTRACTION TO SEPARATE BIOACTIVE AND BIOENERGY COMPOUNDS FROM SPENT COFFEE GROUND." RASAYAN Journal of Chemistry 15, no. 02 (2022): 1234–40. http://dx.doi.org/10.31788/rjc.2022.1526624.

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The spent coffee ground has potential compounds applied in food and bioenergy. In this study, an integrated extraction to separate chemical compounds from the spent coffee ground was designed. Furthermore, the extraction apparatus was combined for percolation, distillation, and Soxhlet extraction. The distillation technique produces flavored coffee, Soxhlet extraction separates coffee oil; while percolation produces the coffee extract. Analysis of coffee aroma using distillation techniques obtained alpha furfuryl alcohol (52.16%), methyl pyrazine (15.63%), and 2.6-dimethyl paradiazine (9.62%).

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Abdel-Mageed, Wael M., Ali A. El-Gamal, Shaza M. Al-Massarani, et al. "Sterols and Triterpenes from Dobera glabra Growing in Saudi Arabia and Their Cytotoxic Activity." Plants 10, no. 1 (2021): 119. http://dx.doi.org/10.3390/plants10010119.

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A new lupane caffeoyl ester, lup-20(29)-ene 3β-caffeate-30-al (7), and a new oleanane-type triterpene, 3β-hydroxyolean-13(18)-en-12-one (17), were isolated from the aerial parts of Dobera glabra (Forssk), along with ten known triterpenes, including seven lupane-type lupeol (1), 30-nor-lup-3β-ol-20-one (2), ∆1-lupenone (3), lup-20(29)-en-3β,30-diol (4), lupeol caffeate (5), 30-hydroxy lup-20(29)-ene 3β-caffeate (6), and betunaldehyde (8); three oleanane-type compounds were also identified, comprising δ-amyrone (15), δ-amyrin (16), and 11-oxo-β-amyrin (18); together with six sterols, comprising

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Abdel-Mageed, Wael M., Ali A. El-Gamal, Shaza M. Al-Massarani, et al. "Sterols and Triterpenes from Dobera glabra Growing in Saudi Arabia and Their Cytotoxic Activity." Plants 10, no. 1 (2021): 119. http://dx.doi.org/10.3390/plants10010119.

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A new lupane caffeoyl ester, lup-20(29)-ene 3β-caffeate-30-al (7), and a new oleanane-type triterpene, 3β-hydroxyolean-13(18)-en-12-one (17), were isolated from the aerial parts of Dobera glabra (Forssk), along with ten known triterpenes, including seven lupane-type lupeol (1), 30-nor-lup-3β-ol-20-one (2), ∆1-lupenone (3), lup-20(29)-en-3β,30-diol (4), lupeol caffeate (5), 30-hydroxy lup-20(29)-ene 3β-caffeate (6), and betunaldehyde (8); three oleanane-type compounds were also identified, comprising δ-amyrone (15), δ-amyrin (16), and 11-oxo-β-amyrin (18); together with six sterols, comprising

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Mauricio-Cuba, Kelly, Stephany Neyra-Vera, Criss O. campo-Rojas, Dorian Paredes-Ramirez, and Juan Manuel Valladolid-Alzamora. "Effects of caffeine consumption on oxidative stress and inflammatory modulation." Revista Médica de Trujillo 19, no. 2 (2024): 60–65. http://dx.doi.org/10.17268/rmt.2024.v19i2.6037.

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La cafeína es un alcaloide presente de forma natural en frutos, hojas y semillas, capaz de absorberse rápida y completamente en el tracto intestinal. Se metaboliza en los hepatocitos por acción de la enzima citocromo P450, CYP1A2, la cual da como producto a la monoxantina, sustrato para xantina oxidasa. Consumida en dosis correctas, es decir, menores a 400 mg/día, tiene diversas reacciones beneficiosas en el organismo, como la inhibición de los productos de peroxidación lipídica y reducción de especies reactivas de oxígeno (ERO), principales responsables de diversas patologías humanas. Del mis

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Gotoh, Jun, Tang-Yong Kuang, Yasuaki Nakao, et al. "Regional differences in mechanisms of cerebral circulatory response to neuronal activation." American Journal of Physiology-Heart and Circulatory Physiology 280, no. 2 (2001): H821—H829. http://dx.doi.org/10.1152/ajpheart.2001.280.2.h821.

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Vibrissal stimulation raises cerebral blood flow (CBF) in the ipsilateral spinal and principal sensory trigeminal nuclei and contralateral ventroposteromedial (VPM) thalamic nucleus and barrel cortex. To investigate possible roles of adenosine and nitric oxide (NO) in these increases, local CBF was determined during unilateral vibrissal stimulation in unanesthetized rats after adenosine receptor blockade with caffeine or NO synthase inhibition with N G-nitro-l-arginine methyl ester (l-NAME) or 7-nitroindazole (7-NI). Caffeine lowered baseline CBF in all structures but reduced the percent incre

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Chen, Ping, and and Jun-Shan Yang. "Flavonol Galactoside Caffeiate Ester and Homoisoflavones from Caesalpinia millettii HOOK. et ARN." CHEMICAL & PHARMACEUTICAL BULLETIN 55, no. 4 (2007): 655–57. http://dx.doi.org/10.1248/cpb.55.655.

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Marques, Carine S. F., Nathalia S. Barreto, Simone S. C. de Oliveira та ін. "β-Cyclodextrin/Isopentyl Caffeate Inclusion Complex: Synthesis, Characterization and Antileishmanial Activity". Molecules 25, № 18 (2020): 4181. http://dx.doi.org/10.3390/molecules25184181.

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Isopentyl caffeate (ICaf) is a bioactive ester widely distributed in nature. Our patented work has shown promising results of this molecule against Leishmania. However, ICaf shows poor solubility, which limits its usage in clinical settings. In this work, we have proposed the development of an inclusion complex of ICaf in β-cyclodextrin (β-CD), with the aim to improve the drug solubility, and thus, its bioavailability. The inclusion complex (ICaf:β-CD) was developed applying three distinct methods, i.e., physical mixture (PM), kneading (KN) or co-evaporation (CO) in different molar proportions

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46

DePaula, Juliana, Sara C. Cunha, Fábio Luiz Partelli, José O. Fernandes, and Adriana Farah. "Major Bioactive Compounds, Volatile and Sensory Profiles of Coffea canephora Flowers and Infusions for Waste Management in Coffee Production." Foods 14, no. 6 (2025): 911. https://doi.org/10.3390/foods14060911.

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This study aimed to investigate the content of major bioactive compounds and characterize the volatile and sensory profiles of Coffea canephora flowers and their infusions. Dried flowers from six selected genotypes of C. canephora trees and their infusions were analyzed for bioactive compounds using HPLC–DAD, while volatile organic compounds (VOC) were analyzed using GC–MS. Eight chlorogenic acids (CGA), seven phenolic acids, and the alkaloids caffeine and trigonelline were quantified in all methanolic flower extracts. Total CGA, phenolic acids, caffeine, and trigonelline contents in the metha

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Shi, Jie, Qiang Wu, Jiliang Deng, et al. "Metabolic Profiling and Antioxidant Analysis for the Juvenile Red Fading Leaves of Sweetpotato." Plants 11, no. 22 (2022): 3014. http://dx.doi.org/10.3390/plants11223014.

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Leaves of sweetpotato (Ipomoea batatas L.) are promising healthy leafy vegetable. Juvenile red fading (JRF) leaves of sweetpotato, with anthocyanins in young leaves, are good candidates for developing functional vegetables. Here, metabolic profiling and possible antioxidants were analyzed for five leaf stages of the sweetpotato cultivar “Chuanshan Zi”. The contents of anthocyanins, total phenolics, and flavonoids all declined during leaf maturation, corresponding to declining antioxidant activities. By widely targeted metabolomics, we characterized 449 metabolites belonging to 23 classes. A to

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Jhou, Hong-Chyi, Chung-I. Chen, Jia-Yi Shen, Chieh-Ting Wang, and Fang-Chih Chang. "Influence of natural light intensities on growth and content of catechins and caffeine in Camellia formosensis leaves and tea infusion." BioResources 20, no. 1 (2024): 877–87. https://doi.org/10.15376/biores.20.1.877-887.

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Camellia formosensis is a significant under the forest canopy crop in Taiwan. This study investigated the composition and yield variations of native Camellia formosensis tea leaves across different relative light intensities levels and seasons. Increasing the relative intensity of natural light resulted in a corresponding increase in the dry weight of C. formosensis leaves. At a relative light intensity of 70%, the dry weight of the leaves per unit area was 15.8 g. However, the yield of C. formosensis was lower at relative light intensities of 40% or 20%. A positive correlation was observed be

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McConell, G. K., G. P. Y. Ng, M. Phillips, Z. Ruan, S. L. Macaulay, and G. D. Wadley. "Central role of nitric oxide synthase in AICAR and caffeine-induced mitochondrial biogenesis in L6 myocytes." Journal of Applied Physiology 108, no. 3 (2010): 589–95. http://dx.doi.org/10.1152/japplphysiol.00377.2009.

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5-Aminoimidazole-4-carboxamide-ribonucleoside (AICAR) and caffeine, which activate AMP-activated protein kinase (AMPK) and cause sarcoplasmic reticulum calcium release, respectively, have been shown to increase mitochondrial biogenesis in L6 myotubes. Nitric oxide (NO) donors also increase mitochondrial biogenesis. Since neuronal and endothelial NO synthase (NOS) are calcium dependent and are also phosphorylated by AMPK, we hypothesized that NOS inhibition would attenuate the activation of mitochondrial biogenesis in response to AICAR and caffeine. L6 myotubes either were not treated (control)

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Rothwell, Joseph, Erikka Loftfield, Roland Wedekind, et al. "A Metabolomic Study of the Variability of the Chemical Composition of Commonly Consumed Coffee Brews." Metabolites 9, no. 1 (2019): 17. http://dx.doi.org/10.3390/metabo9010017.

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Coffee drinking has been associated with a lower risk of certain chronic diseases and overall mortality. Its effects on disease risk may vary according to the type of coffee brew consumed and its chemical composition. We characterized variations in the chemical profiles of 76 coffee brew samples representing different brew methods, roast levels, bean species, and caffeine types, either prepared or purchased from outlets in Rockville, Maryland, United States of America. Samples were profiled using liquid chromatography coupled with high-resolution mass spectrometry, and the main sources of chem

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