Quantitative Paper Chromatography of Carotenoids.

Jensen, Arne; Jensen, Synnøve Liaaen

doi:10.3891/acta.chem.scand.13-1863

Cited by 94 publications

(26 citation statements)

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“…The 4-benzoyl derivative HBP has been extensively used for these studies. Some workers have however, used the 4-acetyl [1], 4-capryl [4], 4-butyryl [5], 4-trifluoroacetyl [6,7] and 4-caproyl [8] for similar studies and have reported effective extraction of metal ions from solutions at low pH. Consequently, efforts have been put recently towards extending the range of extraction reagents beyond HBP to other 4-acyl derivatives of pyrazolone, which included those we have fully characterized [9] for use in extraction studies.…”

Section: Introductionmentioning

confidence: 99%

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Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Okafor

Uzoukwu

1990

Radiochimica Acta

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Section: Introductionmentioning

confidence: 99%

“…Jensen [1] and Zolotov [2,3] have been able to establish that 4-acyl derivatives of 1-phenyl-3-methyl-pyrazolone extract various transition metal ions from acidic solutions. The 4-benzoyl derivative HBP has been extensively used for these studies.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Okafor

Uzoukwu

1990

Radiochimica Acta

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“…Reagents and radionuclides FAP was synthesised and purified as described before [4]. A stock solution of FAP (0.1 % W/V) in absolute ethanol was prepared and stored in an amber bottle.…”

Section: Methodsmentioning

confidence: 99%

Extraction of Cobalt (II) with 1-Phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5

Hasany

Hanif

1978

Radiochimica Acta

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Solvent extraction / Cobalt(II) SummaryThe extraction of cobalt (II) from hydrochloric, nitric and perchloric acids, and also from buffer solutions with 1 -phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 in chloroform has been studied. Cobalt (II) is extracted quantitatively at pH 5.4 and 8.5. Citrate and cyanide ions completely suppress the extraction of cobalt (II) whereas fluoride, iodide, phosphate, sulphate, thiosulphate and thiourea show partial masking. Cobalt (II) can be stripped into solutions of 0.1 Μ hydrochloric, nitric and perchloric acids or into 0.2 Μ potassium cyanide and buffers of pH 1 and 2.The decontamination studies show that a clean separation of cobalt(II) from a number of elements is possible. Some useful radioanalytical separations and their possible applications are discussed.

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“…Chlorophyll "a" concentrations in cell were determined by spectrophotometric method of Jeffery & Humphrey (1975). The carotenoids were determined according to Jensen & Liaaen (1959). The phycobiloproteins were determined according to Bennet & Bogorad (1973).…”

Section: Growth Estimationmentioning

confidence: 99%

Beneficial Effects of Calcium Chloride on Two Cyanobacterial Species under Sodium Chloride Stress

2013

Egypt. J. Microbiol.

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XPOSURE of Anabaena constricta and Nostoc linckia to 0.2M ….. NaCl induced a significant decrease in cell number, dry weight and pigments (chlorophyll "a" and carotenoids,). Also there was a decrease in glucose, protein and nitrogen contents. Addition of two different concentrations of CaCl 2 (40 and 60 mM) to the salinized cultures with both organisms induced a significant increase in growth and metabolites activities. Protein electrophoretic patterns of culture of A. constricta exposed to 0.2 M NaCl showed disappearance of one protein band at 77 KD a and appearance of two protein bands at 171 and 70 KD a. The addition of 40 mM CaCl 2 to the salinized culture of A.constricta showed disappearance of one protein at 77 KDa and appearance of three protein bands at 17, 61 and 162 KDa, while addition of 60 mM CaCl 2 to salinized culture caused appearance of three protein bands at 18, 58 and 138 KD a as compared with control (salinized culture of 0.2 M NaCl alone). Addition of 0.2 M NaCl to culture of N linckia and addition of 40 mM or 60 mM CaCl 2 to salinized culture showed no change of protein patterns as compared with control (culture without NaCl) but differed in the percentage of intensity of proteins.

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Quantitative Paper Chromatography of Carotenoids.

Cited by 94 publications

References 0 publications

Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Extraction of Cobalt (II) with 1-Phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5

Beneficial Effects of Calcium Chloride on Two Cyanobacterial Species under Sodium Chloride Stress

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