scholarly journals Detection and Identification of Adulteration in Vinegar Samples Based on Reversed-Phase High-Performance Liquid Chromatographic (RP-HPLC) Strategies

2021 ◽  
Author(s):  
Sabrein H. Mohamed ◽  
Alyaa I. Salim ◽  
Yousry M. Issa ◽  
Asmaa E. Ali
Keyword(s):  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Rp Hplc ◽  
Detection And Identification ◽  
Liquid Chromatographic

scholarly journals Development and Validation of Reversed-Phase Column High-Performance Liquid Chromatographic and First-Derivative UV Spectrophotometric Methods for Estimation of Voriconazole in Oral Suspension Powder

2008 ◽  
Vol 91 (5) ◽  
pp. 1070-1074 ◽  
Author(s):  
Arun M Prajapati ◽  
Satish A Patel ◽  
Natvarlal J Patel ◽  
Dipti B Patel ◽  
Sejal K Patel
Keyword(s):  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Oral Suspension ◽  
Photodiode Array Detection ◽  
Spectrophotometric Methods ◽  
First Derivative ◽  
Rp Hplc ◽  
Liquid Chromatographic

Abstract This research paper describes validated reversed-phase high-performance column liquid chromatographic (RP-HPLC) and first-derivative UV spectrophotometric methods for the estimation of voriconazole (VOR) in oral suspension powder. The RP-HPLC separation was achieved on Phenomenex C18 column (250 4.6 mm id, 5 m particle size) using wateracetonitrile (40 + 60, v/v; pH adjusted to 4.5 0.02 with acetic acid) as the mobile phase at a flow rate of 1.4 mL/min and ambient temperature. Quantification was achieved with photodiode array detection at 255 nm over the concentration range of 0.11 g/mL with mean recovery of 99.49 0.83 for VOR by the RP-HPLC method. Quantification was achieved with UV detection at 266 nm over the concentration range of 820 g/mL with mean recovery of 99.74 0.664 for VOR by the first-derivative UV spectrophotometric method. These methods are simple, precise, and sensitive, and they are applicable for the determination of VOR in oral suspension powder.

scholarly journals Investigation of Formaldehyde Content in Dairy Products Available in Bangladesh by a Validated High Performance Liquid Chromatographic Method

2017 ◽  
Vol 15 (2) ◽  
pp. 187-194 ◽  
Author(s):  
Md Shahadat Hossain ◽  
Md Samiul Islam ◽  
Subrata Bhadra ◽  
Abu Shara Shamsur Rouf
Keyword(s):  
Dairy Products ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Chocolate Milk ◽  
Uht Milk ◽  
Rp Hplc ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

Highly nutritious dairy products are ingested regularly by all ages of population. Adulteration of dairy products to enhance the inherent stability and acceptability to common consumers by different harmful and toxic ingredients like formalin, an unpermitted preservative, has been a burning issue in Bangladesh over the last few years. The aim of this paper was to analyze the concentration of formaldehyde in dairy products most commonly sold in Bangladeshi markets by a validated reversed phase high performance liquid chromatographic (RP-HPLC) method to reveal the on-going alarming scenario in a scientific way. After pre-derivatization with 2,4- dinitrophenylhydrazine, formaldehyde was detected at 345 nm using a C18 column with acetonitrile and water (45:55) as mobile phase at a flow rate of 2.0ml/min. The validated method has been applied to 41 marketed dairy products, including pasteurized milk, UHT milk, banana- mango- and chocolate-milk, flavored yoghurt, lassi, buttermilk, and skimmed milk. However, no formaldehyde was detected among the tested dairy products.Dhaka Univ. J. Pharm. Sci. 15(2): 187-194, 2016 (December)

scholarly journals METHOD DEVELOPMENT AND VALIDATION OF LOPINAVIR IN TABLET DOSAGE FORM USING REVERSED-PHASE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY

2018 ◽  
Vol 11 ◽  
Author(s):  
Sunkara Namratha ◽  
Vijayalakshmi A
Keyword(s):  
High Performance ◽  
Dosage Form ◽  
Method Development ◽  
Limit Of Detection ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Limit Of Quantification ◽  
Rp Hplc ◽  
Tablet Dosage ◽  
Liquid Chromatographic

Objective: Reversed-phase high-performance liquid chromatographic method (RP-HPLC) was developed for the assessment of lopinavir in the dosage form of tablet.Methods: Chromatogram was run through using Kromosil C18 4.5×150 mm using a mobile phase methanol: water of ratio 65:35% v/v with a rate of flow of 0.8 ml/min, measured by UV spectrometric detection at 265 nm. The method developed was validated in terms of precision, accuracy, linearity, and robustness parameters.Results: Retention time of lopinavir established at 2.482 min and percentage R.S.D of lopinavir found to be 1.0% and 0.5%, respectively. The method shows that good linearity range of 30–150 μg correlation coefficient of lopinavir was 0.997. The limit of detection was 2.97 and limit of quantification was 9.92, respectively. The percent purity of lopinavir was 99.87%.Conclusion: The suggested method (Rp-HPLC) for concurrent assay lopinavir was validated, which is appropriate method for the analysis oflopinavir quantitatively in tablet dosage forms and bulk.

scholarly journals Development and Validation of a RP-HPLC Method for the Estimation of Amlexanox in Oral Paste Dosage Form

2012 ◽  
Vol 10 (2) ◽  
pp. 67-70
Author(s):  
Abdullah Al Masud ◽  
Mohammad Saydur Rahman ◽  
Towfika Islam ◽  
Saki Sultana ◽  
Moynul Hasan ◽  
...  
Keyword(s):  
High Performance ◽  
Dosage Form ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Rp Hplc ◽  
Limit Of Quantitation ◽  
Liquid Chromatographic

A simple, reproducible and efficient reversed phase high performance liquid chromatographic (RPHPLC) method has been developed for the estimation of a recently approved anti allergic drug, amlexanox in oral paste dosage form. The separations were carried out on a Zorbax Eclipse XBD, C18 column (150 x 4.6 mm; 5?m) at a flow rate of 1.50 ml/min. by using mobile phase comprising of mixed buffer (pH adjusted to 6.50) and methanol (50:50 v/v). The injection volume was 10 ?l and the peaks were detected at 244 nm. The linear dynamic range found to be in the concentration range of 15-35 ?g/ml and coefficient of correlation was found to be 0.999. The %RSD value was below 2.0 for intra-day and inter-day precision which indicated that the method was highly precise. The LOD (Limit of detection) and LOQ (Limit of quantitation) were found to be 3.8 ng/ml and 12.5 ng/ml, respectively which revealed that the method was highly sensitive. The percentage recovery of amlexanox ranged from 99.31 to 99.75%, indicating the accuracy of the method and absence of interference from the excipients present in the formulation. The proposed method was simple, fast, accurate and reproducible and hence can be applied for routine quality control operations of amlexanox in oral paste dosage form. Key words: Amlexanox, Anti allergic, RP-HPLC, LOD, LOQ. DOI: http://dx.doi.org/10.3329/dujps.v10i2.11782 Dhaka Univ. J. Pharm. Sci. 10(2): 67-70, 2011 (December)

Development and Validation of RP-HPLC Method for Simultaneous Estimation of Gatifloxacin and flurbiprofen Sodium in Eye Drops

2019 ◽  
Vol 9 (01) ◽  
pp. 83-88
Author(s):  
Pinkal Patel ◽  
Nalini Patel ◽  
Kinjal Parmar
Keyword(s):  
High Performance ◽  
Pharmaceutical Formulations ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Simultaneous Estimation ◽  
Eye Drops ◽  
Rp Hplc ◽  
Development And Validation ◽  
Liquid Chromatographic

A simple, selective and rapid reversed phase High Performance Liquid Chromatographic (RP-HPLC) method has been developed and validated for the simultaneous analysis Gatifloxacin and flurbiprofen sodium in eye drops. The separation was carried out using a mobile phase consisting ACN: Buffer (pH 3.5) in the ratio of 55:45 v/v. The column used was Phenomenex luna ODS C18 (250mm X 4.6 mm i.d., 5 μm particle size) with flow rate of 1 ml / min using UV detection at 268 nm. The described method was linear over a concentration range of 2-12 μg/ml for both of Gatifloxacin and flurbiprofen sodium. The retention times of Gatifloxacin and flurbiprofen sodium were found to be 3.710 min. and 6.797 min respectively. Method was validated statistically and recovery studies were carried out. The proposed method has been applied successfully to the analysis of cited drugs either in pure form or in pharmaceutical formulations with good accuracy and precision. The method here in described can be employed for quality control and routine analysis of drugs in pharmaceutical formulations.

scholarly journals RP-HPLC Determination of Atomoxetine Hydrochloride in Bulk and Pharmaceutical Formulations

2011 ◽  
Vol 8 (4) ◽  
pp. 1958-1964 ◽  
Author(s):  
H. R. Prajapati ◽  
P. N. Raveshiya ◽  
J. M. Prajapati
Keyword(s):  
Flow Rate ◽  
High Performance ◽  
Pharmaceutical Formulations ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Limit Of Quantification ◽  
Rp Hplc ◽  
Liquid Chromatographic

A reversed phase high performance liquid chromatographic (RP–HPLC) method was developed and subsequently validated for the determination of atomoxetine hydrochloride in bulk and pharmaceutical formulation. The separation was done by a PerkinElmer Brownlee analytical C8 column (260 mm x 4.6 mm, 5 µm) using methanol: 50 mM KH2PO2buffer (PH adjusted to 6.8 with 0.1 M NaOH), 80:20 v/v as an eluent. UV detection was performed at 270 nm at a flow rate 1.0 mL/min. The validation of the method was performed, and specificity, reproducibility, precision accuracy and ruggedness were confirmed. The correlation coefficient was found to be 0.997 for atomoxetine hydrochloride. The recovery was in the range of 99.94 to 100.98% and limit of quantification was found to be 5.707 µg/mL. The method is simple, rapid, selective and economical too and can be used for the routine analysis of drug in pharmaceutical formulations.

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