Claudia Cimpoiu - Academia.edu (original) (raw)
Papers by Claudia Cimpoiu
Handbook of Thin-Layer Chromatography, 2003
Bookmarks Related papers MentionsView impact
Reviews in Analytical Chemistry, 2000
... is searched that is experienced as the most unfavourable vertex and the centroid of the ... T... more ... is searched that is experienced as the most unfavourable vertex and the centroid of the ... The simplex is halted when the step size becomes less than some predetermined value or ... The Prisma model is a three-dimensional geometrical design that correlates the solvent strength ...
Bookmarks Related papers MentionsView impact
Biotechnology Biotechnological Equipment, Apr 16, 2014
... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-... more ... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-Bolyai University, Cluj, Romania. (2), Technical University of Cluj-Napoca, Cluj, Romania. Abstract. ... Bot. Hort. Agrobot. Cluj-N., 38(1), 41-43. Jarque CM and Bera AK (1980) Econ. ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Journal of Food Composition and Analysis, 2015
Bookmarks Related papers MentionsView impact
Chromatographic Science Series, 2013
Bookmarks Related papers MentionsView impact
Tea in Health and Disease Prevention, 2013
Bookmarks Related papers MentionsView impact
Journal of Pharmaceutical and Biomedical Analysis, 1998
Bookmarks Related papers MentionsView impact
Biotechnology & Biotechnological Equipment, 2011
... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-... more ... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-Bolyai University, Cluj, Romania. (2), Technical University of Cluj-Napoca, Cluj, Romania. Abstract. ... Bot. Hort. Agrobot. Cluj-N., 38(1), 41-43. Jarque CM and Bera AK (1980) Econ. ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Journal of Pharmaceutical and Biomedical Analysis, 2002
In high performance thin layer chromatography some form of optimization is necessary if complete ... more In high performance thin layer chromatography some form of optimization is necessary if complete separation of all components is required. The selection of mobile phase composition is one of the most important components of an optimization strategies. The aim of this paper is the separation of the N-alkyl phenothiazine sulfones by high performance thin layer chromatography using an optimum mobile phase system. The optimum composition of mobile phase (toluene–ethyl ether–chloroform, 30:50:20, v/v) are given by the maximum of objective function (Fobj=10.6110).
Bookmarks Related papers MentionsView impact
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Bookmarks Related papers MentionsView impact
Journal of pharmaceutical and biomedical analysis, Jan 3, 2006
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Analytical Letters, 2014
Bookmarks Related papers MentionsView impact
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
The aim of this study was to determine the physical and biochemical properties of some Romanian h... more The aim of this study was to determine the physical and biochemical properties of some Romanian honeys in order to discriminate between their floral origins. The evaluated properties were total phenolic content, total protein content, total free amino acids content, color intensity (ABS(450)), pH, ash content, antioxidant activity. Twenty-six commercial honeys from six types of flowers (acacia, sunflower, forest, polyfloral, lime and Sea Buckthorn) were investigated. All samples showed considerable variations with reference to their properties. The properties values were in the range of approved limits (according to EU legislation). The total phenolic, total protein and total free amino acids contents and color intensity varied considerably. Similarly, forest honey had the highest antioxidant activity while the lowest was found in acacia honey. Correlation between the floral origin of honeys and the physical and biochemical properties, respectively, was observed. Moreover, this study demonstrates remarkable variation in DPPH scavenging activity and content of total phenols in honey, depending on its botanic source.
Bookmarks Related papers MentionsView impact
Molecules, 2012
Bookmarks Related papers MentionsView impact
Journal of Liquid Chromatography & Related Technologies, 2014
ABSTRACT Next to water, tea is one of the most consumed beverages all around the world and fruit ... more ABSTRACT Next to water, tea is one of the most consumed beverages all around the world and fruit teas provide a dietary source of biologically active compounds. Many functional foodstuff of fruit origin, including red fruit tea, have entered the markets providing new developments in the domain of quality control and food security scientific research. For this reason, the goal of our study was to establish a method for authentication of 12 commercially available fruit teas (raspberry, strawberry, blueberry, rose hip, wild berry) using HPTLC fingerprinting. The HPTLC fingerprints of red fruit and tea extracts obtained in visible light and in fluorescence at 366 nm after the derivatization with Natural Product/Polyethylene glycol (NP/PEG) reagents indicated different characteristic colored zones allowing a clear differentiation between all teas, in terms of their type and producer. Also, a good correlation between the data from chromatograms and type of teas and the producers, respectively, was obtained.
Bookmarks Related papers MentionsView impact
Handbook of Thin-Layer Chromatography, 2003
Bookmarks Related papers MentionsView impact
Reviews in Analytical Chemistry, 2000
... is searched that is experienced as the most unfavourable vertex and the centroid of the ... T... more ... is searched that is experienced as the most unfavourable vertex and the centroid of the ... The simplex is halted when the step size becomes less than some predetermined value or ... The Prisma model is a three-dimensional geometrical design that correlates the solvent strength ...
Bookmarks Related papers MentionsView impact
Biotechnology Biotechnological Equipment, Apr 16, 2014
... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-... more ... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-Bolyai University, Cluj, Romania. (2), Technical University of Cluj-Napoca, Cluj, Romania. Abstract. ... Bot. Hort. Agrobot. Cluj-N., 38(1), 41-43. Jarque CM and Bera AK (1980) Econ. ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Journal of Food Composition and Analysis, 2015
Bookmarks Related papers MentionsView impact
Chromatographic Science Series, 2013
Bookmarks Related papers MentionsView impact
Tea in Health and Disease Prevention, 2013
Bookmarks Related papers MentionsView impact
Journal of Pharmaceutical and Biomedical Analysis, 1998
Bookmarks Related papers MentionsView impact
Biotechnology & Biotechnological Equipment, 2011
... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-... more ... Anamaria D. Hosu 1 , Claudia Cimpoiu 1 , Vasile Miclaus 1 and Lorentz Jantschi 2. (1), Babes-Bolyai University, Cluj, Romania. (2), Technical University of Cluj-Napoca, Cluj, Romania. Abstract. ... Bot. Hort. Agrobot. Cluj-N., 38(1), 41-43. Jarque CM and Bera AK (1980) Econ. ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Journal of Pharmaceutical and Biomedical Analysis, 2002
In high performance thin layer chromatography some form of optimization is necessary if complete ... more In high performance thin layer chromatography some form of optimization is necessary if complete separation of all components is required. The selection of mobile phase composition is one of the most important components of an optimization strategies. The aim of this paper is the separation of the N-alkyl phenothiazine sulfones by high performance thin layer chromatography using an optimum mobile phase system. The optimum composition of mobile phase (toluene–ethyl ether–chloroform, 30:50:20, v/v) are given by the maximum of objective function (Fobj=10.6110).
Bookmarks Related papers MentionsView impact
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Bookmarks Related papers MentionsView impact
Journal of pharmaceutical and biomedical analysis, Jan 3, 2006
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Analytical Letters, 2014
Bookmarks Related papers MentionsView impact
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
The aim of this study was to determine the physical and biochemical properties of some Romanian h... more The aim of this study was to determine the physical and biochemical properties of some Romanian honeys in order to discriminate between their floral origins. The evaluated properties were total phenolic content, total protein content, total free amino acids content, color intensity (ABS(450)), pH, ash content, antioxidant activity. Twenty-six commercial honeys from six types of flowers (acacia, sunflower, forest, polyfloral, lime and Sea Buckthorn) were investigated. All samples showed considerable variations with reference to their properties. The properties values were in the range of approved limits (according to EU legislation). The total phenolic, total protein and total free amino acids contents and color intensity varied considerably. Similarly, forest honey had the highest antioxidant activity while the lowest was found in acacia honey. Correlation between the floral origin of honeys and the physical and biochemical properties, respectively, was observed. Moreover, this study demonstrates remarkable variation in DPPH scavenging activity and content of total phenols in honey, depending on its botanic source.
Bookmarks Related papers MentionsView impact
Molecules, 2012
Bookmarks Related papers MentionsView impact
Journal of Liquid Chromatography & Related Technologies, 2014
ABSTRACT Next to water, tea is one of the most consumed beverages all around the world and fruit ... more ABSTRACT Next to water, tea is one of the most consumed beverages all around the world and fruit teas provide a dietary source of biologically active compounds. Many functional foodstuff of fruit origin, including red fruit tea, have entered the markets providing new developments in the domain of quality control and food security scientific research. For this reason, the goal of our study was to establish a method for authentication of 12 commercially available fruit teas (raspberry, strawberry, blueberry, rose hip, wild berry) using HPTLC fingerprinting. The HPTLC fingerprints of red fruit and tea extracts obtained in visible light and in fluorescence at 366 nm after the derivatization with Natural Product/Polyethylene glycol (NP/PEG) reagents indicated different characteristic colored zones allowing a clear differentiation between all teas, in terms of their type and producer. Also, a good correlation between the data from chromatograms and type of teas and the producers, respectively, was obtained.
Bookmarks Related papers MentionsView impact