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Title:   Author  item
                                            ARPAIA, MARY LU - UNIVERSITY OF CALIFORNIAitem
                                            COLLIN, S - UNIVERSITY OF CALIFORNIAitem
                                            SIEVERT, J - UNIVERSITY OF CALIFORNIAitem
                                            Obenland, David

                                                         - *Dave*
  Submitted to: Citrograph
                                    Publication Type: Trade Journal
                                    Publication Acceptance Date: 8/6/2013
                                    Publication  Date: 8/6/2013
                                    Citation: Arpaia, M., Collin, S., Sievert, J., Obenland, D.M. 2013. Assessing factors influencing the postharvest quality of California mandarins - Variability in waxing-induced ethanol and aroma volatile production among mandarin varieties. Citrograph. 36-39.Interpretive Summary:
                                Technical Abstract: Mandarins often develop off-flavors during storage that impact consumer acceptance and it would be useful to develop mandarin varieties that are less susceptible to postharvest flavor loss. Ethanol has long been identified to be associated with flavor loss in citrus. A range of diverse mandarin genotypes were screened for their ability to produce ethanol in response to both waxing and storage or a 2-h exposure to nitrogen gas and were found to differ greatly in ethanol content both at harvest and after treatment. Headspace measurements of intact fruit were not predictive of internal juice ethanol concentrations and exposure to nitrogen did not accurately mimic the effect of waxing and storage on ethanol accumulation. High ethanol production was associated with enhanced accumulation of other alcohols and esters that likely influence flavor. Screening for ethanol production could potentially identify mandarin genotypes that differ in the propensity to produce off-flavor volatiles and aid in better understanding the relationship between ethanol production and aroma volatile accumulation.


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