Modelling the respiration rates of pomegranate fruit and arils

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dc.contributor.authorCaleb, Oluwafemi James
dc.contributor.authorMahajan, Pramod V.
dc.contributor.authorOpara, Umezuruike Linus
dc.contributor.authorWitthuhn, Corli R.
dc.date.accessioned2012-08-07T12:52:37Z
dc.date.issued2012-02
dc.descriptionThe original publication is available at http://www.sciencedirect.com/en_ZA
dc.description.abstractThe design of modified atmosphere packaging (MAP) for fresh and fresh-cut fruit requires adequate prediction of respiration rates (RRs). A study was conducted to determine the influences of storage temperature (5, 10 and 15 ◦C) and duration on RR of whole pomegranate fruit and arils of two pomegranate cultivars (‘Acco’ and ‘Herskawitz’). The RR of whole fruit was two to three folds higher, in comparison to those of the fresh arils across all storage temperatures. Temperature had a significant influence on RR. Over the range of storage temperatures studied, RO2 and RCO2 increased from 4.53 to 14.67 mL/kg h and 5.67 to 18.53 mL/kg h, respectively, for whole fruit, while RO2 and RCO2 of fresh arils ranged from 2.51 to 7.59 mL/kg h and 2.72 to 9.01 mL/kg h, respectively. The cultivar ‘Acco’ had higher respiration rates (mL/kg h CO2 production) than ‘Herskawitz’, especially as the length of storage increased at higher temperature conditions. The respiration quotient (RQ) for the whole fruit of both cultivars ranged from 1.14 to 1.26, while that of fresh arils ranged between 1.06 and 1.62. Experimental evidence showed that the significant influence of higher temperature in increasing the RQ of pomegranate arils was more pronounced towards the end of the storage period. The effects of temperature on rates of O2 consumption and CO2 production of whole fruit and arils were adequately described by an Arrhenius type model. The model was validated for whole fruit stored at 8 ◦C, and a good agreement was found between experimental and predicted data.en_ZA
dc.description.versionPublishers' Versionen_ZA
dc.embargo.lift2050-12-31
dc.embargo.terms2050-12-31en_ZA
dc.format.extentp. 49-54 : ill. (some col.)en_ZA
dc.identifier.citationCaleb, O. J, Mahajan, p. V., Opara, U. L. & Witthuhn. 2012. Modelling the respiration rates of pomegranate fruit and arils. Postharvest Biology and Technology, 64(1), 49-54, doi:10.1016/j.postharvbio.2011.09.013.en_ZA
dc.identifier.issn0925-5214
dc.identifier.otherdoi:10.1016/j.postharvbio.2011.09.013
dc.identifier.urihttp://hdl.handle.net/10019.1/22024
dc.language.isoen_ZAen_ZA
dc.publisherElsevieren_ZA
dc.rights.holderElsevieren_ZA
dc.subjectRespiration modelen_ZA
dc.subjectFresh and fresh-cut fruit -- Postharvest technologyen_ZA
dc.subjectModified atmosphere packagingen_ZA
dc.titleModelling the respiration rates of pomegranate fruit and arilsen_ZA
dc.typeArticleen_ZA
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