Determination of Ascorbic Acid in Different Citrus Fruits of Kathmandu Valley
Nishanta Shrestha, Sudan Shrestha and Ajaya Bhattarai
Research Paper I Published January,2016
Journal of Agricultural Science and Food Technology
ABSTRACT
This study compared the concentration of ascorbic acid
between citrus fruits collected from the area of Kathmandu
valley of Nepal. Ascorbic acid was determined for six
species of citrus:
Lemon (Citrus limon), Bitter Orange (Citrus
aurantium), Sweet Orange (Citrus aurantium var.
sinensis), Pomelo (Citrus
maxima), Grapefruit (Citrus
paradisi) and Citron (Citrus medica).
Determination of ascorbic acid was carried out by iodometric
titration, dye titration and spectrophotometric methods. In
all three methods, the average concentration of ascorbic
acid was found to be maximum in pomelo about 61.29 mg/100 ml
and the least in citron about 17.4 mg/100 ml. The amount of
ascorbic acid found in lemon, bitter orange, grapefruit and
sweet orange were about 34.8 mg/100 ml, 29.89 mg/100 ml,
39.80 mg/100 ml, and 25.11 mg/100 ml respectively. The aim
of this study is to compare the concentration of ascorbic
acid among the citrus fruits collected from the area of
Kathmandu valley of Nepal and also comparison is done with
available literatures.
Key Words: Ascorbic acid,
Iodometric titration, Dye titration and Spectrophotometric
methods.
- Journal of Agricultural Science and Food Technology (JASFT)
- Journal of Medical and Biological Science Research (JMBSR)
- Journal of Scientific Research and Essays (JSRE)
- Research Journal of Educational Studies and Review (RJESR)
- Journal of Physical Science and Environmental Studies (JPSES)
- Research Journal of Engineering and Technology (RJET)
- Pearl Journal of Management, Social Science and Humanities (PJMSSH)