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'Phenolic Acids' in keywords
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1998 (2)
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1Author    Magdalena Karamać, Ryszard AmarowiczRequires cookie*
 Title    Inhibition of Pancreatic Lipase by Phenolic Acids -Examination in vitro  
 Abstract    The influence of addition 2, 4, 6, 8, and 10 [j .m of ben­ zoic and cinnamic acids and selected phenolic acids (sali­ cylic, /^-hydroxybenzoic, gentisic, protocatechuic, vanil­ lic, syringic, o-coumaric, p-coumaric, caffeic, ferulic, sinapic) on the activity of pancreatic lipase was exam ­ ined in vitro. The strongest inhibition activities were ob­ served with caffeic, ferulic and benzoic acid, while si­ napic and gentisic acids produced the lowest inhibition. benzoic, /^-hydroxybenzoic, gentisic, vanillic, syrin­ gic, cinnamic, o-coumaric, p-coumaric, caffeic, fer­ ulic, sinapic (all from Sigma). Chemical structures of the compounds m entioned above are described in Fig. 1. o Acids: Benzoic Salicylic p-Hydroxybenzoic Gentisic Protocatechuic Vanillic Syringic R: 4-H R: 2-OH R: 4-OH R: 2,5-di-OH R: 3,4-di-OH R: 3-OCH3, 4-OH R: 3,5-di-OCH3, 4-OH 
  Reference    Z. Naturforsch. 51c, 903—905 (1996); received May 28/September 4 1996 
  Published    1996 
  Keywords    Phenolic Acids, Pancreatic Lipase, Inhibition 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0903_n.pdf 
 Identifier    ZNC-1996-51c-0903_n 
 Volume    51 
2Author    M. Ari, C. Arm En, T. Erencio, Marí, JesúS. Sanz, Marí, Luisa Fonseca, SalvadorM. Áñ Ez, JoséR. Luis, ÍosRequires cookie*
 Title    Phenolic Compounds from Lactuca viminea L  
 Abstract    The aerial part o f Lactuca viminea L. was examined for the presence o f phenolic com ­ pounds. Six different flavonoids were isolated and identified by U V spectra, TLC, HPLC-D A D , 'H NM R and l3C N M R . They were identified as apigenin, luteolin, quercetin, luteolin-7-O-glucoside, quercetin-3-O-glucoside and luteolin-7-0-glucuronide-6"-m ethyl ester. Three phenolic acids were also detected: caffeic, ferulic and chlorogenic acid. 
  Reference    Z. Naturforsch. 47c, 17 (1992); received June 26/July 31 1991 
  Published    1992 
  Keywords    Lactuca viminea, Flavonoids, Phenolic Acids, Asteraceae 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0017.pdf 
 Identifier    ZNC-1992-47c-0017 
 Volume    47 
3Author    M.T A Ñón, A. U. Beda, M. J. AlcarazRequires cookie*
 Title    Protective Effects of Phenolic Compounds on CCl4-Induced Toxicity in Isolated Rat Hepatocytes  
 Abstract    The protective effects o f a series o f phenolic compounds, phenolic acids and flavonoids on the cytotoxicity o f CC14 in rat hepatocytes were studied. A number o f flavones, 7,8-dihydroxy-flavone, luteolin and hypolaetin-8-glucoside, flavonols, morin, quercetin, robinetin and gossy-pin, phenolic acids, gallic, caffeic and chlorogenic acids, as well as the flavane (+)-catechin significantly inhibited alanine amine transferase (ALT) release. Catechol groups are determi­ nant for the protective activity o f flavonoids and cinnamic acid derivatives, as well as the re-sorcinol or pyrogallol moieties in the B ring o f flavonoids. In benzoic acid derivatives a pyro-gallol group is required. This feature is associated with the inhibition o f A LT spontaneous release. 
  Reference    Z. Naturforsch. 47c, 275 (1992); received April 23 1991/January 2 1992 
  Published    1992 
  Keywords    F lavonoids, Phenolic Acids, CC14 Hepatocytes, Hepatoprotective Agents 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0275.pdf 
 Identifier    ZNC-1992-47c-0275 
 Volume    47 
4Author    Rosa Marí, Giner, Marí, Jesús Cuellar, Marí, Carmen Recio, SalvadorM. Áñez, JoséR. Luis, ÍosRequires cookie*
 Title    Chemical Constituents of Urospermum picroides  
 Abstract    Seven phenolic compounds were isolated from the aerial parts of U. picroides. They were identified by UV spectra, TLC and HPLC-DAD as luteolin, luteolin-7-glucoside, quercetin, quercetin-3-galactoside, kaempferol-3-galactoside, chlorogenic and isochlorogenic acids. Other phenolics were characterized by HPLC-DAD analysis: gallic, protocatechuic, caffeic, ferulic and isoferulic acids, quercetin-3-glucoside and luteolin-4'-glucoside. 
  Reference    Z. Naturforsch. 47c, 531—534 (1992); received February 2/March 6 1992 
  Published    1992 
  Keywords    Urospermum picroides, Lactuceae, Compositae, Flavonoids, Phenolic Acids 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0531.pdf 
 Identifier    ZNC-1992-47c-0531 
 Volume    47 
5Author    M. C. Marcucci3, Jose Rodriguez, F. Ferreresc, V. B. An K O V, Robson Groto6, S. PopovdRequires cookie*
 Title    Chemical Composition of Brazilian Propolis from Sao Paulo State  
 Abstract    Two propolis samples from Sao Paulo State were investigated by GC/MS. 39 compounds were identified, 8 being new for propolis. Both samples showed some similarities in their qualitative composition. In one of them, coum aric acid and its prenylated derivatives predo­ minated, while in the other one triterpenic alcolhols were the main constituents. 
  Reference    Z. Naturforsch. 53c, 117 (1998); received O ctober 7/D ecem ber 8 1997 
  Published    1998 
  Keywords    Propolis, GC/MS, Phenolic Acids, Triterpenes 
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 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-0117.pdf 
 Identifier    ZNC-1998-53c-0117 
 Volume    53 
6Author    M. D. Garcia, M. C. Ahumada, M. T. SaenzRequires cookie*
 Title    Cytostatic Activity of Some Phenolic Acids of Scrophularia frutescens L. var. frutescens  
 Abstract    The cytostatic activity of seven phenolic acids: coum-aric, caffeic, ferulic, gentisic, protocatechuic, syringic and isovanillic acid previously isolated from Scrophularia frutescens has been evaluated against H e p -2 cells (de­ rived from a human epidermoid carcinoma of the lar­ ynx) and McCoy cells (derived from the synovial fluid in the knee joint of a patient suffering from degenerative arthritis). The compounds belonging to the cinnamic group present the highest activity. 
  Reference    Z. Naturforsch. 53c, 1093—1095 (1998); received April 8/O ctober 7 1998 
  Published    1998 
  Keywords    Scrophularia frutescens Cultured H ep -2 Cells, Cultured McCoy Cells, Phenolic Acids 
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 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-1093_n.pdf 
 Identifier    ZNC-1998-53c-1093_n 
 Volume    53 
7Author    Peter Proksch, Charles Wisdom, Eloy RodriguezRequires cookie*
 Title    Analysis of Phenolic Acids by High Performance Liquid Chromatography Using a Step-Wise Gradient  
 Abstract    A high performance liquid chrom atographic m ethod for analyzing phenolic acids on reverse phase C-18 is described. Twelve substituted benzoic and cinnam ic acid derivatives as well as the parent acids were resolved in less than 25 min. Separation was achieved by using a step-wise gradient of three different solvent systems and by adding am m onium acetate for preventing intramolecular hydrogen bonding o f the acids. The applicability o f the described m ethod to crude plant extracts is demonstrated with Adenostoma fasciculatum, Adenostoma sparsifolium and Phyllospadix scouleri. The percent composition of the phenolic acids within the three extracts is given. 
  Reference    Z. Naturforsch. 36c, 357 (1981); received D ecem ber 29 1980 
  Published    1981 
  Keywords    High Performance Liquid Chrom atography (HPLC), Phenolic Acids, Adenostoma fasciculatum, A sparsifolium, Phyllospadix scouleri 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0357.pdf 
 Identifier    ZNC-1981-36c-0357 
 Volume    36