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 Commodity Protection and Quality Research: Parlier, CA
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Title:   Author  item
                                            ARPAIA, MARY LU - KEARNEY AGRICULTURAL CENTERitem
                                            COLLIN, SUE - KEARNEY AGRICULTURAL CENTERitem
                                            Fjeld, Kentitem
                                            SIEVERT, JIM - KEARNEY AGRICULTURAL CENTERitem
                                            Obenland, David

                                                         - *Dave*
  Submitted to: Citrograph
                                    Publication Type: Trade Journal
                                    Publication Acceptance Date: 6/10/2011
                                    Publication  Date: 6/15/2011
                                    Citation: Arpaia, M., Collin, S., Fjeld, K.A., Sievert, J., Obenland, D.M. 2011. The science behind the proposed maturity standard change. Citrograph. 2(3):24-33.Interpretive Summary:
                                Technical Abstract: The current maturity standard for navel oranges in California has been in place for nearly 100 years yet does not always do a good job of ensuring that consumers obtain good-tasting fruit during the early season. Early work that was performed which supported adoption of the standard may have been adequate for that time, but the marketplace is much more competitive now given the large number of commodities that consumers now have to choose from. Our research with the taste panel at UCKAC clearly demonstrated over a three-year period that navel oranges picked at a 8:1 SSC/TA ratio are disliked. This conclusion was supported by consumer testing performed near Chicago with the Tragon Corporation. All of this work also demonstrated that a new measure, which is calculated by subtracting TA times a set value from SSC, is superior to SSC/TA as a predictor of likeability. This new measure, which was designed to eliminate poor tasting fruit and at the same time not to overly delay harvest, has been named the California Standard and is designated as a possible replacement for our current maturity standard.


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