Zobrazeno 1 - 10
of 26
pro vyhledávání: '"M S, Karawya"'
Publikováno v:
ChemInform. 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cf5620ed89e7fdb5aeb6c580b3b8dbf
https://doi.org/10.1002/chin.199537258
https://doi.org/10.1002/chin.199537258
Publikováno v:
Scopus-Elsevier
~~~~~~~~~~~~~~~~ ~~~~~~~~-medica Abstract The polysaccharides of stems of Opuntia Jicusindica, seeds of T amarin dus indica and seeds of Cydonia oblonga were found to consist of a mixture of mucilage and pectin. The preparation of each polysacchari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99eb55d63d677eb021ca7263f0d97a0c
https://doi.org/10.1055/s-2008-1075006
https://doi.org/10.1055/s-2008-1075006
Publikováno v:
Planta Medica. 38:73-78
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0e94a7ec727b310a941a4c70111a4ce
https://doi.org/10.1055/s-2008-1074840
https://doi.org/10.1055/s-2008-1074840
Publikováno v:
Planta Medica. 21:173-176
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96211b146d70ac1d7c73961739e5449b
https://doi.org/10.1055/s-0028-1099539
https://doi.org/10.1055/s-0028-1099539
Publikováno v:
Die Pharmazie. 39(6)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c4b6072eba4995755524935cbf3e0ed9
https://pubmed.ncbi.nlm.nih.gov/6483948
https://pubmed.ncbi.nlm.nih.gov/6483948
Publikováno v:
Journal - Association of Official Analytical Chemists. 59(4)
Two colorimetric methods are presented for determining reserpine. In the first method, an iron hydroxamate complex is formed through the ester group in position 16 in the reserpine molecule. The color is measured at 535 nm (0.5-6 mg/25 ml). This meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3e41383c7c956627e258fd60070e9dfa
https://pubmed.ncbi.nlm.nih.gov/939742
https://pubmed.ncbi.nlm.nih.gov/939742
Publikováno v:
Journal - Association of Official Analytical Chemists. 58(1)
Two colorimetric methods are described for the estimation of strychnine and brucine in nux vomica. The first is a modification of the Karawya and Ghourab method for the determination of strychnine, in which the sensitivity of the color is increased b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::af8e0cb4a7c7d241328e387ec5237109
https://pubmed.ncbi.nlm.nih.gov/237873
https://pubmed.ncbi.nlm.nih.gov/237873
Autor:
M S, Karawya, A M, Diab
Publikováno v:
Journal - Association of Official Analytical Chemists. 58(6)
In the method described the amide group in the colchicine molecule is reduced with lithium aluminum hydride to the corresponding secondary amine. The latter is extracted with chloroform and then determined either colorimetrically by the copper dithio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3b2b2baa3969a49b570a41a283066821
https://pubmed.ncbi.nlm.nih.gov/1194180
https://pubmed.ncbi.nlm.nih.gov/1194180
Publikováno v:
Journal - Association of Official Analytical Chemists. 58(5)
Two colorimetric micromethods are described for the determination of atropine-hyoscyamine and hyoscine (scopolamine), using p-dimethylaminobenzaldehyde and citric acid-acetic anhydride as the color reagents. These methods are sensitive to 60-1200 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9d48d7bfe22c4b12d9123c86ed9faea6
https://pubmed.ncbi.nlm.nih.gov/1158830
https://pubmed.ncbi.nlm.nih.gov/1158830
Publikováno v:
Journal - Association of Official Analytical Chemists. 59(4)
A sensitive method is presented for determining aconitine. Aconitine is complexed with Co2+, the aconitine-cobalt complex is extracted with chloroform, and the absorbance is measured at 320 nm. The sensitivity of the method ranged between 0.06 and 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e6471055a30db3cc74c78f0e4f9d48d3
https://pubmed.ncbi.nlm.nih.gov/939743
https://pubmed.ncbi.nlm.nih.gov/939743