Non-spectrophotometric methods for the determination of Vitamin C

SP Arya, M Mahajan, P Jain - Analytica Chimica Acta, 2000 - Elsevier
In view of the widespread use of Vitamin C, a large number of methods have been
developed for quantifying Vitamin C contents in natural and fortified food samples and …

Determination of ascorbic acid by electrochemical techniques and other methods

S Skrovankova, J Mlcek, J Sochor, M Baron… - International journal of …, 2015 - Elsevier
Ascorbic acid (AA) is a water-soluble vitamin essential in the human nutrition, an antioxidant,
a scavenger of free radicals in biological systems and a cofactor of several enzymes. For the …

Micro determination of ascorbic acid using methyl viologen

EK Janghel, VK Gupta, MK Rai, JK Rai - Talanta, 2007 - Elsevier
A new simple and sensitive analytical spectrophotometric method is developed for the
determination of ascorbic acid reduces methyl viologen to form a stable blue coloured free …

Determination of ascorbic acid in soft drinks, preserved fruit juices and pharmaceuticals by flow injection spectrophotometry: Matrix absorbance correction by treatment …

A Jain, A Chaurasia, KK Verma - Talanta, 1995 - Elsevier
Two flow injection systems for the spectrophotometric determination of ascorbic actid at 245
nm have been described. On treatment with sodium hydroxide a fraction of the ascorbic acid …

Flow injection determination methods of ascorbic acid

MC Yebra-Biurrun - Talanta, 2000 - Elsevier
A review with 100 references is presented to show the advantages involved in the use of
flow injection analysis (FIA) for the determination of ascorbic acid. The FI methods proposed …

Spectrophotometric determination of a nanomolar amount of ascorbic acid using its catalytic effect on copper (II) porphyrin formation

M Tabata, H Morita - Talanta, 1997 - Elsevier
A simple, fast and sensitive flow-injection method is proposed for the determination of
nanomolar amounts of ascorbic acid in tea, urine and blood. The procedure is based on the …

Ascorbic acid in food: Development of a rapid analysis technique and application to diffusivity determination

C Pénicaud, S Peyron, P Bohuon, N Gontard… - Food Research …, 2010 - Elsevier
A rapid, easy to handle and low cost assay of ascorbic acid was developed, which consists
in miniaturization on microplate of a redox reaction monitored spectrophotometrically, the …

Flow-injection spectrophotometric determination of ascorbic acid in pharmaceutical products with the Prussian Blue reaction

JA Nóbrega, GS Lopes - Talanta, 1996 - Elsevier
A lot of modern analytical strategies for exploiting chemistries have been developed by
using flow-injection analysis. However, even after 20 years of flow-injection evolution, there …

Flow injection spectrophotometric or conductometric determination of ascorbic acid in a vitamin C tablet using permanganate or ammonia

K Grudpan, K Kamfoo, J Jakmunee - Talanta, 1999 - Elsevier
Two simple flow injection (FI) procedures for the determination of ascorbic acid content in a
vitamin C tablet are proposed: spectrophotometric involving injection into a stream of acidic …

Flow-injection chemiluminometric determination of ascorbic acid based on its sensitized photooxidation

T Pérez-Ruíz, C Martínez-Lozano, A Sanz - Analytica chimica acta, 1995 - Elsevier
The chemiluminescent reaction, in alkaline solution, of lucigenin with the products from the
photooxidation of ascorbic acid sensitized by toluidine blue has been studied. A flow …