نتایج جستجو برای: 4 caffeoy1 quinic acid

تعداد نتایج: 1924359  

2010
Emilio Álvarez-Parrilla Ricardo Palos Laura A. de la Rosa Bernardo A. Frontana-Uribe Gustavo Adolfo González-Aguilar Lorena Machi Jesús Fernando Ayala-Zavala

Complexation of chlorogenic acid (CA) by b-cyclodextrin (b-CD) at mildly acidic pH, was studied by fluorescence spectroscopy, isothermal titration calorimetry (ITC), cyclic voltammetry (CV) and NMR spectroscopy. Thermodynamic parameters (DH°, DS° and K) determined by both fluorescence and ITC, showed that the complexation of CA by b-CD is an enthalpy-driven process. Results show that CA molecul...

Journal: :Journal of agricultural and food chemistry 2006
Barbara Ribeiro Joana Rangel Patrícia Valentão Paula Baptista Rosa M Seabra Paula B Andrade

The organic acids and phenolics compositions of nine wild edible mushrooms species (Suillus bellini, Tricholomopsis rutilans, Hygrophorus agathosmus, Amanita rubescens, Russula cyanoxantha, Boletus edulis, Tricholoma equestre, Suillus luteus, and Suillus granulatus) were determined by HPLC-UV and HPLC-DAD, respectively. The antioxidant potential of these species was also assessed by using the D...

Journal: :The Journal of nutrition 2001
M R Olthof P C Hollman M B Katan

Chlorogenic acid, an ester of caffeic acid and quinic acid, is a major phenolic compound in coffee; daily intake in coffee drinkers is 0.5-1 g. Chlorogenic acid and caffeic acid are antioxidants in vitro and might therefore contribute to the prevention of cardiovascular disease. However, data on the absorption of chlorogenic acid and caffeic acid in humans are lacking. We determined the absorpt...

Journal: :Molecules 2007
Min Cheol Yang Sung Min Kim Kyu Ha Lee Ki Hyun Kim Kang Ro Lee

Column chromatographic separation of a MeOH extract of the aerial parts of Saussurea triangulata led to the isolation of a new sesquiterpene glycoside 6, together with three quinic acid derivatives, two phenolics, two sesquiterpene glycosides and two flavonoids. The new compound 6 was identified as amarantholidol A glycoside by spectroscopic and chemical methods.

Journal: :Beiträge zur Tabakforschung International/Contributions to Tobacco Research 2012

Journal: :Molecules 2015
Sarah Lee Dong-Gu Oh Sunmin Lee Ga Ryun Kim Jong Seok Lee Youn Kyoung Son Chang-Hwan Bae Joohong Yeo Choong Hwan Lee

Chemotaxonomic metabolite profiling of 62 indigenous Korean plant species was performed by ultrahigh performance liquid chromatography (UHPLC)-linear trap quadrupole-ion trap (LTQ-IT) mass spectrometry/mass spectrometry (MS/MS) combined with multivariate statistical analysis. In partial least squares discriminant analysis (PLS-DA), the 62 species clustered depending on their phylogenetic family...

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