New flow injection method for quality control of dietary supplements containing l-carnitine using extraction mediated by sodium taurodeoxycholate coacervate coupled to molecular fluorescence

2016 ◽  
Vol 129 ◽  
pp. 268-273 ◽  
Author(s):  
Andrea C. Isaguirre ◽  
Gimena Acosta ◽  
Soledad Cerutti ◽  
Liliana P. Fernandez
Keyword(s):  
Quality Control ◽  
Dietary Supplements ◽  
Flow Injection ◽  
Injection Method ◽  
Molecular Fluorescence ◽  
Sodium Taurodeoxycholate

A Comparative Study Between a Flow Injection Method and a Batch Method to Determine Glucosamine in Dietary Supplements

2011 ◽  
Vol 7 (4) ◽  
pp. 318-324 ◽  
Author(s):  
Borja-Isunza Lorena ◽  
Canizares-Macias M. Pilar
Keyword(s):  
Comparative Study ◽  
Dietary Supplements ◽  
Flow Injection ◽  
Batch Method ◽  
Injection Method

Modern TLC: A key technique for identification and quality control of botanicals and dietary supplements

2005 ◽  
Vol 18 (101) ◽  
pp. 34-38 ◽  
Author(s):  
Anne Schibli ◽  
Eike Reich
Keyword(s):  
Quality Control ◽  
Dietary Supplements

scholarly journals Sequential determination of chromium(VI) and chromium(III) by potentiometric flow-injection method.

2000 ◽  
Vol 49 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Hiroki OHURA ◽  
Toshihiko IMATO ◽  
Ikuo MATSUO ◽  
Sumio YAMASAKI
Keyword(s):  
Flow Injection ◽  
Injection Method ◽  
Sequential Determination ◽  
Chromium Vi

Flow Injection Method for Sulphide Determination Using an Organic Mercury Compound

1991 ◽  
Vol 24 (4) ◽  
pp. 581-588 ◽  
Author(s):  
M. Yaqoob ◽  
M. Anwar ◽  
A. S. Masood ◽  
M. Masoom
Keyword(s):  
Flow Injection ◽  
Mercury Compound ◽  
Organic Mercury ◽  
Injection Method ◽  
Organic Mercury Compound

scholarly journals Optimization of spectrophotometric method for determination nattokinase activity in dietary supplements

2020 ◽  
Vol 3 (2) ◽  
pp. 96-103
Author(s):  
Dieu Thu Nguyen Thi ◽  
Dung Hoang Viet ◽  
Hong Ngoc Nguyen Thi ◽  
Thanh An Vu Thi ◽  
Thanh Hoa Mac Thi ◽  
...  
Keyword(s):  
Quality Control ◽  
Reaction Time ◽  
Dietary Supplements ◽  
Dietary Supplement ◽  
Reaction Temperature ◽  
Spectrophotometric Method ◽  
Fibrinolytic Activity ◽  
Valuable Contribution ◽  
Label Product ◽  
Measured Activity

Nattokinase is an enzyme with a strong fibrinolytic activity that can be used for preventing thrombolytic diseases. The fibrinolytic activity of the Nattokinase in dietary supplements is determined by spectrophotometric method. In this study, the conditions of the assay were examined and finally optimized as pH: 8.5, reaction temperature: 40oC, and reaction time: 60 minutes. The proposed method was validated and successfully applied to determine the Nattokinase activity in 10 dietary supplements. The results showed that the proportion of measured activity compared to label product activity were within in the range 79.1 - 98.0%. The effect of herbal compounds and excipients on Nattokinase activity were also surveyed. From the evaluated results and application to commercial samples, this method will be a valuable contribution to quality control of dietary supplement products containing Nattokinase.  

scholarly journals Spectrophotometric flow injection procedure to indirect determination of paracetamol in pharmaceutical formulations using o-tolidine as reagent

2018 ◽  
Vol 33 (2) ◽  
pp. 47
Author(s):  
Orlando Fatibello-Filho ◽  
Heberth Juliano Vieira
Keyword(s):  
Standard Deviation ◽  
Detection Limit ◽  
Flow Injection ◽  
Pharmaceutical Formulations ◽  
Injection Method ◽  
Indirect Determination ◽  
Analytical Curve ◽  
Relative Standard ◽  
Injection Procedure

A spectrophotometric flow injection method for the determination of paracetamol in pharmaceutical formulations is proposed. The procedure was based on the oxidation of paracetamol by sodium hypochloride and the determination of the excess of this oxidant using o-tolidine dichloride as chromogenic reagent at 430 nm. The analytical curve was linear in the paracetamol concentration range from 8.50 x 10-6 to 2.51 x 10-4 mol L-1 with a detection limit of 5.0 x 10-6 mol L-1. The relative standard deviation was smaller than 1.2% for 1.20 x 10-4 mol L-1 paracetamol solution (n = 10). The results obtained for paracetamol in pharmaceutical formulations using the proposed flow injection method and those obtained using a USP Pharmacopoeia method are in agreement at the 95% confidence level.

Determination of chromium(III) picolinate in dietary supplements by flow injection - Electrospray ionization - Tandem mass spectrometry, using cobalt(II) picolinate as internal standard

Talanta ◽  
2021 ◽  
pp. 123161
Author(s):  
Missael Antonio Arroyo Negrete ◽  
Kazimierz Wrobel ◽  
Eunice Yanez Barrientos ◽  
Alma Rosa Corrales Escobosa ◽  
Israel Enciso Donis ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Dietary Supplements ◽  
Electrospray Ionization ◽  
Flow Injection ◽  
Internal Standard ◽  
Tandem Mass ◽  
Ionization Tandem Mass Spectrometry

Catalytic spectrophotometric determination of ruthenium by flow injection method

Talanta ◽  
2001 ◽  
Vol 55 (4) ◽  
pp. 715-720 ◽  
Author(s):  
A Ensafi
Keyword(s):  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Injection Method
Sign in / Sign up

Export Citation Format

Share Document