Determination of certain physical and chemical characteristics of the activating serum factor from preparturient women and women with habitual abortions

1985 ◽  
Vol 41 (1) ◽  
pp. 68-70
Author(s):  
J. Lukanov ◽  
E. Milieva ◽  
G. Russev ◽  
B. Trifonov
Keyword(s):  
Chemical Characteristics ◽  
Serum Factor ◽  
Physical And Chemical Characteristics ◽  
Habitual Abortions ◽  
Physical And Chemical

scholarly journals PHYSICO-CHEMICAL STUDIES OF APITOXIN AND PRODUCTS ON ITS BASIS

2018 ◽  
Vol 6 (4) ◽  
pp. 351-366
Author(s):  
L. I. Butenko ◽  
S. A. Kuleshova ◽  
J. V. Podgornaya ◽  
L. P. Myikots ◽  
A. B. Dmitriev
Keyword(s):  
Quantitative Determination ◽  
Reference Sample ◽  
Pharmaceutical Products ◽  
Chemical Characteristics ◽  
Determination Limit ◽  
Uv Spectrum ◽  
Physical And Chemical Characteristics ◽  
Main Component ◽  
Physical And Chemical

Introduction.Nowadays, it is vitally important to develop a method for quantifying melittin not only in apitoxin samples, but also in the products of its processing.The aim of our studyis to investigate physical and chemical characteristics of melittin, the main component of apitoxin, as well as the development of methods for the quantitative determination of melittin in the samples of apitoxin and in the pharmaceutical products derived from apitoxin: “Sophia with apitoxin” cream and “Apizartron” ointment.Materials and methods.The objects of the research were apitoxin and melittin, as well as the samples of “Sophia with apitoxin” cream and “Apizartron” ointment satisfying the requirements of regulatory documentation, produced in lots by domestic and foreign manufacturers. The UV spectra of melittin and apitoxin were registered on SF 103 spectrophotometer in quartz cuvettes with 1 cm thickness. The IR spectra were investigated on the IR-instrument of Fourier – FSM-1201 spectrophotometer, LLC “Infraspek”. The determination of melittin purity was carried out by chromatography.Results and discussion. The basic physical and chemical characteristics were established for melittin as a reference sample and the main component of apitoxin. The melting temperature was: (Tmelt.)=190ºС. In the UV-spectrum there could be watched the absorption maxima corresponding to 2 peaks: λ max = 225±2 nm and 285±2 nm were observed. As an analytical wavelength, it is necessary to choose the peak λ =285 nm, since the peak with λ =225 nm is associated with the absorption of light by the internal (shielded) benzene ring of the tryptophan molecule. The nature of the curve and the position of the maxima of the spectra of melittin and the apitoxin solution coincide, which makes it possible to use melittin as a standard for spectrometric quantitative determination of the active substances in apitoxin and preparations based on apitoxin.Conclusion. The worked out spectrophotometric methods for the quantitative determination of melittin in apitoxin has been validated by the indices of specificity, accuracy, detection limit, quantitative determination limit, linearity.

Study of Structural, Physical and Chemical Characteristics of Marshmallow Without Gelatin

Food Industry ◽  
2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Nataliia V. Nepovinnykh ◽  
Yuri A. Kodatsky ◽  
Oksana N. Klyukina ◽  
Nataliia M. Ptichkin ◽  
Samira Yeganehzad
Keyword(s):  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Physical And Chemical

Effects of Chlormequat-Uniconazole 30% Micro-Emulsion on Stem Physical and Chemical Characteristics of Rice

2013 ◽  
Vol 39 (6) ◽  
pp. 1089
Author(s):  
Qian ZHANG ◽  
Ming-Cai ZHANG ◽  
Hai-Yan ZHANG ◽  
Wei-Ming TAN ◽  
Zhao-Hu LI ◽  
...  
Keyword(s):  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Micro Emulsion ◽  
Physical And Chemical
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