Thermal degradation kinetics of anthocyanin and visual colour of plum puree

Authors: Ahmed, J.1; Shivhare, U.2; Raghavan, G.3

Source: European Food Research and Technology A, Volume 218, Number 6, May 2004 , pp. 525-528(4)

Publisher: Springer

Buy & download fulltext article:

OR

Price: $47.00 plus tax (Refund Policy)

Abstract:

Thermal degradation kinetics of anthocyanin and visual colour (tristimulus L, a and b values) of plum puree were studied at selected temperatures (50–90 °C) for a residence time of 20 min. Results indicated that the thermal degradation of anthocyanin, tristimulus colour a value (representing redness) and L×a×b value (representing total colour) followed first-order reaction kinetics. The activation energy values for anthocyanin, red colour and total colour were 37.48, 25.86 and 30.68 kJ/mol respectively. Higher activation energy signified higher thermal sensitivity of anthocyanin during heat processing of plum puree. A linear relationship described well the variation of total visual colour (L×a×b) with anthocyanin content of plum puree during thermal processing.

Keywords: Activation energy; Anthocyanin; Colour; Plum puree; Thermal degradation

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s00217-004-0906-5

Affiliations: 1: Department of Food Science, Faculty of Food Systems, UAE university, PO Box 17555, Al Ain, United Arab Emirates, Email: jahmed2k@yahoo.com 2: Department of Chemical Engineering and Technology, Panjab University, Chandigarh, India, 3: Department of Agricultural and Biosystems Engineering, McGill University, Macdonald Campus 21, 111 Lakeshore, Ste-Anne de Bellevue, Quebec H9X 3V9, Canada,

Publication date: May 1, 2004

Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page