Colorimetric determination of ascorbic acid and the activity of alkaline phosphatase based on the inhibition of the peroxidase-like activity of citric acid-capped Prussian Blue nanocubes

2019 ◽  
Vol 186 (2) ◽  
Author(s):  
Tengteng Wu ◽  
Wenli Hou ◽  
Zhangyan Ma ◽  
Meiling Liu ◽  
Xiaoying Liu ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Ascorbic Acid ◽  
Citric Acid ◽  
Prussian Blue ◽  
Colorimetric Determination

scholarly journals Spectrophotometric determination of ascorbic acid in grapes with the Prussian Blue reaction

2012 ◽  
Vol 23 (2) ◽  
pp. 174-179 ◽  
Author(s):  
Nicoleta Matei ◽  
Simona Dobrinas ◽  
Gabriel Lucian Radu
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Vitis Vinifera ◽  
Prussian Blue ◽  
Spectrophotometric Determination ◽  
Pinot Noir ◽  
Cabernet Sauvignon ◽  
Red Grapes ◽  
Blue Reaction

AbstractThe objective of the present work was to adapt the Prussian Blue reaction for the determination of ascorbic acid. The procedure was successfully applied for the determination of ascorbic acid in red and white grapes (Vitis vinifera L.) just previous ingathering. In the present work was used the red and white grapes from Murfatlar vineyard: Mamaia, Cabernet Sauvignon, Merlot, Pinot Noir, Chardonnay, Sauvignon, Muscat Ottonel and Riesling Italian. The results were situated in the range of 0.67 - 1.79 mg vitamin C/100g product for red grapes and respectively 0.50 - 1.49 mg vitamin C/100g for white grapes.

An Automated Alkaline Phosphatase Assay with Phenolphthalein Monophosphate as Substrate

1967 ◽  
Vol 13 (4) ◽  
pp. 281-289 ◽  
Author(s):  
Kirsten Hviid
Keyword(s):  
Alkaline Phosphatase ◽  
Normal Values ◽  
Serum Alkaline Phosphatase ◽  
Colorimetric Determination ◽  
Alkaline Phosphatase Assay ◽  
Phosphatase Assay ◽  
Hydrolysis Of

Abstract The manual procedure of Babson et al. (1) for the determination of serum alkaline phosphatase has been automated. The assay is based on the colorimetric determination of phenolphthalein formed on hydrolysis of phenolphthalein monophosphate. The procedure utilizes 0.16 ml. of serum without dialysis. Blanks are required only for turbid sera. Results are compared with those obtained by the manual procedure, and data relating to sample interaction, precision, blank values, and normal values are presented.

THE COLORIMETRIC DETERMINATION OF PLATINUM WITH 5-(p-DIMETHYLAMINOBENZYLIDENE)-RHODANINE

1963 ◽  
Vol 41 (3) ◽  
pp. 667-670 ◽  
Author(s):  
Frances E. Piercy ◽  
D. E. Ryan
Keyword(s):  
Ascorbic Acid ◽  
The Other ◽  
Colorimetric Determination ◽  
Platinum Metals ◽  
Low Concentrations ◽  
Fold Excess

5-(p-Dimethylaminobenzylidene)-rhodanine is used to determine 0.5 to 6 p.p.m. of platinum colorimetrically, after reduction of platinum IV with ascorbic acid. Platinum can be determined in the presence of a 10-fold excess of palladium; low concentrations of the other platinum metals, except rhodium, do not seriously interfere.

A glassy carbon electrode based on graphene quantum dots (GQDs) for simultaneous detection of acetaminophen and ascorbic acid

2015 ◽  
Vol 7 (20) ◽  
pp. 8877-8881 ◽  
Author(s):  
Chengfei Zhao ◽  
Zong'en Liu ◽  
Wentan Xu ◽  
Min Chen ◽  
Shaohuang Weng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Citric Acid ◽  
Electrochemical Sensor ◽  
Glassy Carbon ◽  
Graphene Quantum Dots ◽  
Simultaneous Detection ◽  
Carbon Electrode ◽  
Pyrolysis Method

In this present work, graphene quantum dots (GQDs) were handily prepared with citric acid by the pyrolysis method and used to fabricate an electrochemical sensor for the simultaneous determination of acetaminophen (AC) and ascorbic acid (AA) in compound preparation.

Colorimetric Determination of Ascorbic Acid

1954 ◽  
Vol 26 (9) ◽  
pp. 1521-1522 ◽  
Author(s):  
Morton. Schmall ◽  
C. W. Pifer ◽  
E. G. Wollish ◽  
Robert. Duschinsky ◽  
Harold. Gainer
Keyword(s):  
Ascorbic Acid ◽  
Colorimetric Determination

Colorimetric determination of ascorbic acid

1973 ◽  
Vol 61 (6) ◽  
pp. 901-906 ◽  
Author(s):  
M. H. Hashmi ◽  
Maqbool Ahmad Shahid ◽  
M. Ahsan Akhtar ◽  
N. A. Chughtai
Keyword(s):  
Ascorbic Acid ◽  
Colorimetric Determination
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