Phylloplane mycoflora of Mentha viridis L., M. arvensis Dc. and M. piperita L.

El-Gindy, A.A.

doi:10.1016/s0232-4393(11)80144-7

Cited by 8 publications

(14 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several methods have also been reported for the estimation of AML alone or in combination with other antihypertensive agents such as HPLC [18][19][20][21][22], LC-MS [23], CE [24][25][26], UV spectrophotometry [27][28][29], and spectrofluorimetry [30,31]. For HCZ determination alone or in combination with other antihypertensive agents, several methods such as HPLC [6,[32][33][34][35][36][37], LC-MS [38][39][40][41], ultra high performance liquid chromatography [42], and UV spectrophotometry [43] have been described.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form by capillary zone electrophoresis

et al. 2014

View full text Add to dashboard Cite

A novel, specific, reliable, and accurate capillary zone electrophoretic method was developed and validated for the simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form. Separation was carried out in a fused-silica capillary (57.0 cm total length and 50.0 cm effective length, 75.6 μm internal diameter) by applying a potential of 17 kV and a running buffer consisting of 40 mM phosphate buffer at pH 6.0 with UV detection at 245 nm. The method was suitably validated with respect to specificity, linearity, LOD, and LOQ, accuracy, precision, and robustness. The method showed good linearity in the ranges 1-10, 2.5-25, and 30-300 μg/mL with LODs of 0.11, 0.33, and 5.83 μg/mL for amlodipine besylate, hydrochlorothiazide, and aliskiren hemifumarate, respectively. The proposed method was successfully applied for the analysis of the studied drugs in their coformulated tablets. The results of the proposed method were statistically compared with those obtained by the RP-HPLC reference method revealing no significant differences in the performance of the methods regarding accuracy and precision.

show abstract

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form by capillary zone electrophoresis

et al. 2014

View full text Add to dashboard Cite

show abstract

“…[12,13] Furthermore, the reagents are more safe, cheaper and easier to prepare than O-phthaldehyde and 2-mercaptoethanol reagents. [9,12] The general analytical procedure was found to be faster and simpler compared with other methods that need a long time extraction. [10] Conversely, in comparison to the other techniques reported, the proposed method is cheaper and needs less volumes of expensive solvents than chromatographic methods.…”

Section: Content Uniformity Testing For Studied Drugmentioning

confidence: 99%

“…These methods include spectrophotometric [2][3][4][5][6][7][8][9] spectrofluorimetric, [9][10][11][12][13] polarographic, [2] chromatographic, [14][15][16][17][18][19][20][21][22] capillary electrophoretic [23][24][25][26] and immunoassay [27] methods.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Selective spectrofluorimetric method for determination of Lisinopril in pharmaceutical preparations and in presence of hydrochlorothiazide: Application to content uniformity testing

2017

View full text Add to dashboard Cite

A novel sensitive and cost-effective spectrofluorimetric method has been developed and validated for determination of lisinopril (an angiotensin converting enzyme inhibitor) in its pure form and pharmaceutical preparations. The method is based on the reaction of the drug with ninhydrin and phenylacetaldehyde in buffered medium (pH 7.0) to form a highly fluorescent product measured at 460 nm after excitation at 390 nm. Different experimental parameters were optimized and calibration curve was constructed. The fluorescence-concentration relationship was linear in the range of 0.15-4.0 μg mL . The calculated Limit of detection (LOD) and Limit of quantitation (LOQ) were 0.04 and 0.12 μg mL , respectively. The method was successfully applied for the analysis of pharmaceutical preparations containing the studied drug either alone or co-formulated with hydrochlorothiazide. The obtained results were in agreement with those of the reported method in respect to accuracy and precession. Moreover, the method was applied content uniformity testing according to United States Pharmacopeia (USP) guidelines.

show abstract

“…[8] TPZ was determined in the presence of its sulfoxide oxidative degradate by different techniques including HPLC, [9 -11] spectrofluorimetry [12] and D 1 , D 2 and spectrodensitometric methods. [11] Isopropamide iodide (ISO) is γ -(aminocarbonyl)-N-methyl-N,Nbis (1-methylethyl) -γ -phenylbenzenepropanaminium iodide. [1] ISO is a quaternary ammonium anticholinergic.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric determination of isopropamide Iodide and trifluoperazine hydrochloride in presence of trifluoperazine oxidative degradate

Abbas

Zaazaa

Abdelkawy

et al. 2010

Drug Testing and Analysis

View full text Add to dashboard Cite

Four sensitive, selective and precise stability indicating methods for the determination of isopropamide iodide (ISO) and trifluoperazine hydrochloride (TPZ) in their binary mixture and in presence of trifluoperazine oxidative degradate (OXD). Method A is a derivative spectrophotometric one, where ISO was determined by first derivative (D(1)) at 226.4 nm while TPZ was determined by second derivative (D(2)) at 270.2 nm. Method B is the first derivative of the ratio spectra (DD(1)) spectrophotometric method, ISO can be determined by measuring the peak amplitude at 227.4 nm using 5 microg mL(-1) of OXD as a divisor, while TPZ can be determined by measuring the peak amplitude at 249.2 and 261.4 nm using 15 microg mL(-1) of ISO as a divisor. Method C is the isoabsorptive spectrophotometric method. This method allows determination of ISO and TPZ in their binary mixture by measuring total concentration of ISO and TPZ at their isoabsorptive point at lambda(229.8) nm (Aiso1) while TPZ concentration alone can be determined at lambda(max) 311.2 nm, then ISO concentration can be determined by subtraction. On the same basis TPZ can be determined in presence of ISO and OXD, where OXD concentration alone was determined by measuring the peak amplitude at lambda(281.6) and lambda(309.4) nm while total concentration of TPZ and OXD was determined at their isoabsorptive points at (Aiso2 = 270.2 nm), (Aiso3 = 310.6 nm) and (Aiso4 = 331.8 nm) then TPZ concentration was determined by subtraction. Method D is the multivariate calibration techniques [the classical least squares (CLS), principal component regression (PCR) and partial least squares (PLS)], using the information contained in the absorption spectra of ISO, TPZ and OXD mixtures. The selectivity of the proposed methods was checked using laboratory prepared mixtures. The proposed methods have been successfully applied to the analysis of ISO and TPZ in pharmaceutical dosage form without interference from other dosage form additives and the results were statistically compared with the reported method.

show abstract

Phylloplane mycoflora of Mentha viridis L., M. arvensis Dc. and M. piperita L.

Cited by 8 publications

References 4 publications

Simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form by capillary zone electrophoresis

Simultaneous determination of aliskiren hemifumarate, amlodipine besylate, and hydrochlorothiazide in their triple mixture dosage form by capillary zone electrophoresis

Selective spectrofluorimetric method for determination of Lisinopril in pharmaceutical preparations and in presence of hydrochlorothiazide: Application to content uniformity testing

Spectrophotometric determination of isopropamide Iodide and trifluoperazine hydrochloride in presence of trifluoperazine oxidative degradate

Contact Info

Product

Resources

About