Title : ( Investigation of the effect of ultrasound on ascorbic acid of fresh orange juice )
Authors: ندا مهماندوست , رسول کدخدایی , Mohammad Taghi Hamed Mosavian , Mahdi Niknam Shahrak ,
Full TextAbstract
In this study the effect of high power ultrasound in degradation of ascorbic acid (Vitamin C) in fresh orange juice was investigated. Fresh orange juice was sonicated at various temperatures and acoustic amplitudes for different times at the constant frequency of 30 kHz. Then ascorbic acid was measured. The results showed that ultrasound at the high temperature, had a significant effect on vitamin C. Degradation of vitamin C was found to follow first order kinetics. It was also demonstrated that the efficiency of vitamin C increased with decreasing temperature. This paper will also present how the thermodynamic parameters of ΔS# and ΔH# changed with acoustic amplitude.
Keywords
, Ascorbic acid, Ultrasound
@inproceedings{paperid:1024810,
author = {ندا مهماندوست and رسول کدخدایی and Hamed Mosavian, Mohammad Taghi and Niknam Shahrak, Mahdi},
title = {Investigation of the effect of ultrasound on ascorbic acid of fresh orange juice},
booktitle = {The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011)},
year = {2011},
location = {کیش, IRAN},
keywords = {Ascorbic acid; Ultrasound},
}
%0 Conference Proceedings
%T Investigation of the effect of ultrasound on ascorbic acid of fresh orange juice
%A ندا مهماندوست
%A رسول کدخدایی
%A Hamed Mosavian, Mohammad Taghi
%A Niknam Shahrak, Mahdi
%J The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011)
%D 2011
