03073naa a2200277 a 450000100080000000500110000800800410001902000220006002200470008202400420012910000170017124501170018826000090030549000310031450002610034552020010060665000200260765300130262765300130264065300230265365300160267670000150269270000160270770000190272377300530274210603622019-11-12       2018    bl uuuu     u00u1 u    #d  a978-94-62611-90-0  a0567-7572 (print) / 2406-6168 (electronic)7 a10.17660/ActaHortic.2018.1194.122DOI1 aURRABURU, M.  aPostharvest and functional behavior of some feijoa genetic materials. (Conference paper).h[electronic resource]  c2018  a(Acta Horticulturae; 1194)  aIn: Acta Horticulturae (ISHS) 1194: VIII International Postharvest Symposium: Enhancing Supply Chain and Consumer Benefits - Ethical and Technological Issues. Editors: F. Artés-Hernández, P.A. Gómez, E. Aguayo, F. Artés. Publication date: 4 april 2018.  aABSTRACT. Feijoa (Acca sellowiana (Berg.) Burret) is one of the most popular native Uruguayan trees whose functional characteristics have attracted the interest for commercial cultivation. The aim of this work was to evaluate the postharvest behavior of six genetic materials, identified as 95, 97, 98, 152, 153 and 154 from the Facultad de Agronomía and Instituto Nacional de Investigación Agropecuaria (INIA, Uruguay) breeding program. Fruits harvested at two maturity stages (M1: not easily picked; M2: touch picking) were stored for 0, 15 and 30 days at 5°C and 95% relative humidity (RH) plus 7 days at 18°C (shelf life). Respiration rates and ethylene emissions were measured every 3 days, while flesh firmness, weight loss and total polyphenol content were evaluated at the end of the storage period and during shelf life. The respiration rate of all the genetic materials was around 27.6 mg kg-1 h-1 of CO2 during the storage period, while ethylene emission was maintained below 100 µL kg-1 h-1 without differences among maturity stages and genetic materials. Fruits harvested at the M1 stage were 40-60% more firm than fruits harvested at the M2 stage. Genetic materials identified as 95 and 98 had the highest firmness results, with values of 150.1 and 145.1 N (M1), 112.6 and 90.4 N (M2) at harvest and 28.8 and 17.4 N (M1) and 17.2 and 15.4 N (M2) after 30 days at 5°C + 7 days at 20°C, respectively. Average weight loss at the end of storage (30+7) was 14.7%. Fruits identified as material 152 had the highest polyphenol content with values at harvest of 2,384.5 mg GAE 100 g-1 DW (M1) and 2,130.7 mg GAE 100 g-1 DW (M2). At the end of the storage period (30+7), total polyphenol contents decreased between 30-70% in the M1 stage and between 20-50% in the M2 stage. Materials 95, 98 and 152 are interesting for commercial production due to their firmness retention and their functional composition.  © 2018 International Society for Horticultural Science. All rights reserved  aACCA SELLOWIANA  aEthylene  aFirmness  aFunctional quality  aRespiration1 aAGUAYO, E.1 aZOPPOLO, R.1 aSILVEIRA, A.C.  tActa Horticulturae, 2018, no. 1194, pages 73-78.