Open AccessKINETIC MODELING OF ANAEROBIC THERMAL DEGRADATION OF ASCORBIC ACID IN ROSE HIP ( ROSA CANINA L) PULP
Author(s) -
KARHAN MUSTAFA,
AKSU MEHMET,
TETIK NEDIM,
TURHAN IRFAN
Publication year - 2004
Publication title -
journal of food quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.568
H-Index - 43
eISSN - 1745-4557
pISSN - 0146-9428
DOI - 10.1111/j.1745-4557.2004.00638.x
Subject(s) - ascorbic acid , activation energy , chemistry , pulp (tooth) , arrhenius equation , kinetics , isothermal process , reaction rate constant , anaerobic exercise , atmospheric temperature range , arrhenius plot , nuclear chemistry , thermodynamics , food science , biology , dentistry , medicine , physiology , physics , quantum mechanics
ABSTRACT Ascorbic acid loss in thermally treated rose hip pulp was modeled mathematically. Isothermal experiments in the temperature range of 70–95C were utilized to determine the kinetics of ascorbic acid loss in the pulp during heating under anaerobic circumstances. Changes in ascorbic acid decomposition followed a first‐order reaction. Temperature dependence of the rate constant during thermal processing of rose hip pulp obeyed the Arrhenius relationship with an activation energy of 47.5 kJ/mole.