Higuchi and connors

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August undefined, 2024

WebPhase solubility diagrams and their classification according to Higuchi and Connors. S0 is the intrinsic solubility of drugs in aqueous medium. Source publication +4 Cyclodextrins in Drug... WebFeb 27, 2010 · According to Higuchi and Connors there can be five types of phase-solubility relationship (Fig. 1): A L-type where there is a linear relationship between substrate (drug) …

(PDF) Phase solubility studies of the inclusion complexes of ...

WebPhase-solubility studies Water solubility studies for both triterpenic acids were conducted by the Higuchi and Connors method [16] using a series of increasing concentrations of OGCD. In this purpose aqueous suspensions of oleanolic acid and ursolic acid, respectively, were prepared in the presence of OGCD in a concentration range of 1 to 300 ... WebAug 8, 2024 · The method of Higuchi and Connors proposes that to determine the inclusion constant of a formed complex 1H 4 MGF:1βCD, the phase-solubility diagram, ( [H 4 MGF] = f ( [βCD])) of saturated solutions in mangiferin must show a linear trend and then equation ( 6) relates the slope ( α) and intercept ( G0) of the straight line with the equilibrium … philosophers and their contribution

Synthesis and characterization of NH2-(AEEA)n-amphotericin B

WebDec 18, 2024 · Phase solubility test was performed according to the method of Higuchi and Connors [ 24 ]. An excess amount of camphor was added to aqueous CD (HPβCD and HPγCD) solutions, and the suspensions were shaken at RT. After equilibrium was achieved at the end of 48 h, the suspensions were filtered with 0.45 μm membrane filter. WebMay 1, 1999 · There are many methods for determination of stability constants of CyD complexes, using techniques such as solubility (Higuchi and Connors, 1965), … Webevaluated by the methods described by Higuchi and Connors.20) Twenty mL of 0.007–0.252M CD aqueous solution in a glass beaker was placed in a 25 C water bath. Excess ALA was added to the CD solution and the mixture was homogenized at 2,000rpm with a T. K. ROBO MICS (Primix, Osaka, Japan). The suspension was ﬁltered philosophers and their contribution to ethics

Mangiferin/β-cyclodextrin complex: determination of the Inclusion ...

WebThe Higuchi窶鼎onnors phase-solubility method8)is very often used to determine K 1:1 , as a part of a formulation study. This method is based on the effect of a complex forming lig- and, e.g.CD, on the solubility of the drug. The intrinsic solu- bility (S 0 ) and the slope of the phase-solubility diagram are then used to calculate K 1:1 WebSolubility profiles by Higuchi and Connors theory. So is the drug intrinsic solubility in cyclodextrin absence 76 . Source publication Alternative Technologies to Improve … philosophers and their philosophy aboWebT. Higuchi, A. Connors Published 1965 Chemistry No Paper Link Available Save to Library Create Alert Cite 2,633 Citations Citation Type More Filters Development of Solvent-Free … tshb160c-l1

"WebIn a famous publication by Higuchi and Connors, complexes were classified based on the phase solubility profiles derived from the molecular interactions between the host and the … " - Higuchi and connors

Higuchi and connors

WebMar 30, 2024 · The phase solubility study was carried out according to the method of Higuchi and Connors ( Higuchi, & Connors, 1965 ). Specifically, excessive APG (approximately 10 mg) was added to 5 mL of ethanol–water (30:70, v/v) solution containing different concentrations of OMT in the range of 5–300 mM. WebFeb 27, 2010 · According to Higuchi and Connors there can be five types of phase-solubility relationship (Fig. 1 ): A L -type where there is a linear relationship between substrate (drug) solubility and ligand (cyclodextrin) concentration and which is interpreted as formation of a complex with m :1 stoichiometry; A P -type, which represents positive deviation …

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WebSep 1, 2010 · The phase-solubility diagrams obtained according to the Higuchi and Connors method [6] allowed us to estimate the molar ratio and the apparent stability constants of … WebIt is a blood scihozonticide and active against all stages of Plasmodium falciparum. The drug is also used for the treatment of cerebral malaria as well as for the chloro- quine resistant cases [2-5]. Unfortunately, it is water- insoluble (17 µg/ml at room temperature) [6] and the formulation causes difficulties to the biopharmaceutical scientist.

WebMay 11, 2024 · Cyclodextrins (CDs), a group of oligosaccharides formed by glucose units bound together in a ring, show a promising ability to form complexes with drug molecules … WebT. Higuchi and K. A. Connors, “Phase-Solubility Techniques,” In: C. N. Reilly, Ed., Advances in Analytical Chemistry and Instrumentation, Wiley-Interscience, New York, Vol. 4, 1965, pp. 117-212. has been cited by the following article: TITLE: Ibuprofen-Maltodextrin Interaction: Study of Enantiomeric Recognition and Complex Characterization

WebThe most common and widely used method to evaluate the ability of the inclusion complex is the phase solubility studies by Higuchi and Connors (1965). 23 The plot showed that … WebMay 1, 1999 · There are many methods for determination of stability constants of CyD complexes, using techniques such as solubility ( Higuchi and Connors, 1965 ), potentiometry ( Miyaji et al., 1976 ), high-pressure liquid chromatography ( Uekama et al., 1978 ), and kinetic ( Bender and Komiyama, 1978) and spectroscopic ( Cramer et al., 1967, Thakkar et …

WebThe shake-flask method is based on the phase solubility technique that was developed 40 years ago and is still the most reliable and widely used method for solubility measurement …

WebJan 15, 2024 · Phase-solubility profiles and classification of drug/cyclodextrin complexes according to Higuchi and Connors (Higuchi and Connors, 1965). The phase solubility … philosophers and their phiWebThis was explained by the solubilization theory of Higuchi and Connors. The solubility analysis of the ternary drug/competitor/CyD systems may be particularly useful for … philosophers and their school of thoughtWebTypes of phase-solubility diagrams according to Higuchi and Connors [11] showing how the total drug solubility changes with increasing CD concentration. A-type diagrams are … philosopher sarcophagusWebT K Higuchi, A Connors 31 Dec 1964 - Vol. 4, pp 212-217 About: The article was published on 1965-01-01 and is currently open access. It has received 2363 citation (s) till now. The … tshb6atrWebT. Higuchi, K. A. Connors, “Phase Solubility Techniques,” Advanced Analytical Chemistry of Instrumentation, Vol. 4, 1965, pp. 117-212. has been cited by the following article: TITLE: … philosophers are always wiseWebT. Higuchi and K. A. Connors, “Phase-Solubility Techniques,” In: C. N. Reilly, Ed., Advances in Analytical Chemistry and Instrumentation, Wiley-Interscience, New York, Vol. 4, 1965, pp. … tshb160cWebHiguchi and Gensch, "Acylation through a Sulfonium Ion Intermediate. Coupled Conversion of a Carboxylic Acid to an Acid Anhydride during Oxidation of a Thioether to a Sulfoxide,", … tshb620