Journal :   Asian Journal of Research in Chemistry

Volume No. :   10

Issue No. :  5

Year :  2017

Pages :   657-659

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Determination of the age of Guava from the Oxalate Ion and Ascorbic Acid contents and the determination of the rate of change of Oxalate Ion and Ascorbic Acid contents with respect to the age of Guava



Address:   Dr. Dileesh S1*, Alfiya Nasser A2, Linju Baby2, Tins George2
1Assistant Professor, Department of Chemistry, St. Peter's College Kolenchery, Ernakulam, Kerala, India-682311
2Department of Chemistry, St. Peter’s College, Kolenchery,
*Corresponding Author
DOI No: 10.5958/0974-4150.2017.00111.0

ABSTRACT:
The oxalate ion and ascorbic acid concentrations of the matured guava fruit at different stages of ripening were determined using reported procedures. The oxalate ion content was found to increase and the ascorbic acid content was found to decrease with the aging of the fruit. From the plot of oxalate ion concentrations and ascorbic acid concentrations against number days, the approximate age of the matured guava bought from market is determined by measuring their oxalate ion t and ascorbic acid contents. The age of the guava obtained by the oxalate and ascorbic acid methods were found to be almost the same making a chance of a linear relationship between the conversion of ascorbic acid to oxalate ion. This linearity is proved by plotting the concentration of ascorbic acid against the concentration of oxalate ion. An approximate study of rate of change of oxalate ion and the ascorbic acid contents were also determined from the standard plots of oxalate ion and ascorbic acid.
KEYWORDS:
Guava, Rate, Kinetics, Ascorbic acid, Oxalate ion, Vitamin C.
Cite:
Dileesh S, Alfiya Nasser A, Linju Baby, Tins George. Determination of the age of Guava from the Oxalate Ion and Ascorbic Acid contents and the determination of the rate of change of Oxalate Ion and Ascorbic Acid contents with respect to the age of Guava. Asian J. Research Chem. 2017; 10(5): 657-659.
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