Kinetics of thermal degradation of vitamin C in marula fruit (Sclerocarya birrea subsp. caffra) as compared to other selected tropical fruits

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dc.contributor.authorHiwilepo-van Hal, Penny
dc.contributor.authorBosschaart, Charlotte
dc.contributor.authorVan Twisk, Cherlotte
dc.contributor.authorVerkerk, Ruud
dc.contributor.authorDekker, Matthijs
dc.date.accessioned2014-06-26T09:01:59Z
dc.date.available2014-06-26T09:01:59Z
dc.date.issued2012
dc.description.abstractThe kinetics of the thermal degradation of vitamin C of marula, mango and guava pulp at different heat treatments at temperature ranging from 80 to 150 C were investigated. For temperatures lower than125 C, the ascorbic acid in marula pulp was about 15 fold more stable to heat than the ascorbic acid in mango and guava pulp. The results showed that a simple first order degradation model could not describe the vitamin C degradation as biphasic behaviour was observed. Therefore the model was transformed in a two-fraction model in which the vitamin C content is divided in relatively stable and instable fractions. Marula had a low kd1,100 C of 7.2 10 3 min 1 compared to kd1,100 C of 1.2 10 1 min for guava and 1.3 10 1 min 1 for mango. Guava had the highest activation energy, Ea of 58 kJ/mol, followed by mango with 39 kJ/mol and then marula with 29 kJ/molen_US
dc.identifier.citationHiwilepo-van Hal, P., Bosschaart, C., van Twisk, C., Verkerk, R., & Dekker, M. (2012). Kinetics of thermal degradation of vitamin C in marula fruit (Sclerocarya birrea subsp. caffra) as compared to other selected tropical fruits. LWT-Food Science and Technology, 49, 188–191en_US
dc.identifier.issnDOI: 10.1016
dc.identifier.urihttp://hdl.handle.net/11070/1007
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.source.urihttp://www.sciencedirect.com/science/article/pii/S0023643812000540#en_US
dc.subjectMarula fruitsen_US
dc.subjectKineticsen_US
dc.subjectTropical fruitsen_US
dc.subjectThermal treatmenten_US
dc.subjectGuava and mangoen_US
dc.titleKinetics of thermal degradation of vitamin C in marula fruit (Sclerocarya birrea subsp. caffra) as compared to other selected tropical fruitsen_US
dc.typeArticleen_US
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