Modeling the effect of time and temperature on respiration rate of pomegranate arils (cv. ‘‘Acco’’ and ‘‘Herskawitz’’)

dc.contributor.authorCaleb, Oluwafemi James
dc.contributor.authorMahajan, Pramod V.
dc.contributor.authorOpara, Umezuruike Linus
dc.contributor.authorWitthuhn, Corli R.
dc.identifier.citationCaleb, O. J, Mahajan, P. V., Opara, U. L. & Witthuhn. 2012. Modeling the effect of time and temperature on respiration rate of pomegranate arils (cv. ‘‘Acco’’ and ‘‘Herskawitz’’). Journal of Food Science, 77(4), E80-E87, doi:10.1111/j.1750-3841.2012.02623.x.en_ZA
dc.identifier.issn1750-3841 (online)
dc.identifier.issn0022-1147 (print)
dc.descriptionThe original publication is available at http://onlinelibrary.wiley.comen_ZA
dc.description.abstractAbstract: Understanding the effect of time and temperature on the respiration rate (RR) of fresh-cut produce, towards the design of a suitable modified atmosphere packaging (MAP) system, requires an adequate mathematical model for prediction of RR as a function of both time and temperature. This study investigated the effect of temperature (5, 10, and 15 ◦C) and storage time (1 to 5 d) on the RR (RO2 and RCO2 ) of 2 pomegranate cultivars (cv. ‘‘Acco’’ and ‘‘Herskawitz’’) fresh arils. RO2 and RCO2 were 3 to 4 folds significantly higher with increased temperature from 5 to 15 ◦C and were within the range of 2.51 to 7.59 mL/kg h and 2.72 to 9.01 mL/kg h, respectively, for both cultivars. At 15 ◦C RCO2 increased significantly from 8.4 to 25.96 mL/kg h from day 1 to 5, respectively, while at 5 ◦C RCO2 changed from 2.9 to 2.05 mL/kg h from day 1 to 5. Temperature had the greatest influence on RR and the interaction of time and temperature also significantly affected RO2 and RCO2 . The respiratory quotient (RQ) estimated by linear regression was 0.98 at 95% significant level. The dependence of RR on temperature and time was accurately described with a combination of an Arrhenius-type and power equation model for RO2 and RCO2 of fresh pomegranate arils.en_ZA
dc.format.extentp. E80-E87 :ill. (some col.)en_ZA
dc.publisherWiley Blackwellen_ZA
dc.subjectFresh-cut produce -- Postharvest technologyen_ZA
dc.subjectModified atmosphere packaging systemen_ZA
dc.subjectRespiration modelen_ZA
dc.titleModeling the effect of time and temperature on respiration rate of pomegranate arils (cv. ‘‘Acco’’ and ‘‘Herskawitz’’)en_ZA
dc.description.versionPublishers' Versionen_ZA
dc.rights.holderWiley Blackwellen_ZA

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