Cut peaches may have a shelf life of 15 days with adequate antioxidant treatments and atmosphere

The aim of this study was to evaluate the effect of modified atmospheres and the effectiveness of the antibrowning treatment on the shelf life of fresh - cut Clingstone peaches cv. Calante, a high quality late - season peach in Spain. Processed peaches were stored under 250 mL/min flow of 4 different gas compositions: air (21% O2 + 0% CO2), low oxygen atmosphere (3% O2 + 0% CO2), carbon dioxide enriched atmosphere (21% O2 + 10% CO2) and low ? oxygen high - carbon dioxide atmosphere (3% O2 + 10% CO2). Antibrowning treatment (2% ascorbic acid + 1% citric acid + 1% calcium chloride) was previously applied. Selected quality and biochemical parameters of the minimally processed peaches were monitored at 4 ?C for up to 15 days, including color, enzymatic activity, total phenolic content and off flavors (ethanol and acetaldehyde). Microbial quality of fresh ? cut peaches was evaluated (mesophilic bacteria, molds and yeast). A comparison of the browning of slices dipped in the antioxidant solution to those non - treated slices was performed. Regardless of the applied atmosphere, a high effectiveness of the antioxidant treatment was obtained. The microbiological counts indicated that the low - oxygen high - carbon dioxide atmosphere was the best inhibiting mesophilic bacteria, molds and yeasts. However, the ethanol and acetaldehyde concentrations increased during the storage period at this atmosphere. The antioxidant treatment enhanced the antimicrobial effect of the modified atmospheres, and reduced the enzymatic activity. The combination of antioxidant treatment and adequate atmosphere can extend the shelf - life of Calante fresh ? cut peaches up to 15 days. ? SourceSHELF - LIFE OF FRESH - CUT CLINGSTONE PEACHES AS AFFECTED BY ATMOSPHERE COMPOSITIONGonz?lez - Buesa, J., Arias, E., Ferrer, A., Oria, R. and Salvador, M.L. (*) mlsalva@unizar.esLaboratory of Vegetal Food, Universidad de Zaragoza, Miguel Servet 177, 50013, Zaragoza, SpainCA MA 2013, XI International Controlled & Modified Atmosphere Research Conference, Trani (Italy), 3-7 June 2013 The picture belongs to a peach snack protected by a natura Agricoat formulation. Key wordsPoscosecha?? ?postcosecha?? ?postharvest?? ?na-oes?? ??? ??? ???????? ????? ??? ?post-r?colte?? ????? ?? ??????????? ??? ?na-oogst?? ?post-raccolta?? ?Obr?bka po?? ?p?s-colheita?? ????????????????? ?hasat sonras??? ??? ?Ernte?? ????????????????? ????? ????????????? ?postcollita?? ?poskliz?ov頠 ????? ??? ??? ??? ?nakon branja?? ?pozberov頠 ??? ?obdelovanje zemlje po?? ?post-colleita?? ?????? ??????? ?pascapanen?? ??il?onn postharvest?? ??????? ?p?c ra?as?? ?derliaus apdirbimas po?? ?lepas tuai?? ??? ?? ???????? ?post-recoltare?? ??????? ??????? ???????????????????? ?????????????? ?????????????????? ?sau thu ho?ch?? ?????????????????? ?zangemva kwenkathi yokuvunaMelocot?n?? ?durazno?? ?peach?? ?perske?? ?????? ????? ??? ?p?che?? ??????????? ??????? ?perzik?? ?pesca?? ?brzoskwinia?? ?p?ssego?? ????????? ??eftali?? ?????? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???? ?