Expanding of the marketing period of apples under combined normal atmosphere – ULO storage conditions
Drudze I. and Lepsis J.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. 143 p.
2004
บทคัดย่อ
Expanding of the marketing period of apples under combined normal atmosphere – ULO storage conditions.
The trial was conducted for 24 apple cultivars and hybrids, promising for commercial apple market in Latvia and Baltic Region.The 1st step of combined storage; fruits were stored in normal atmosphere conditions (90-95% relative air humidity, +2 + 1 °C) until they reached the stage of consumption maturity, decreased undesirable acidity, developed full aroma, and becomes ready for marketing.The 2nd stage: fruits were replaced in two different ULO-type atmospheres to evaluate the possibility to expand the marketing period for cultivars usually realized till February in normal atmosphere storage conditions.There was not applied any chemical treatment.During trial period water soluble solids, flesh firmness, physiological and microbiological weight losses, fruit appearance (especially, presence of the scald development), preservation of natural aroma and taste quality were registered.The aim of the trial was to find storage conditions for significant decelerating of further ripening till June, and to determine the tolerance level to O2 and CO2 for each tested cultivar in such advanced maturity stage.The first results of the trial shows that it is possible to decelerate fruit ripening processes during storage for some cultivars, so that fruits in advanced maturity stage keeps good market quality for prolonged time.The best results were obtained for cultivars ‘Ilga’, ‘Bogatir’, ‘Merigold’, ‘Sinap Orlovskij’, ‘Auksis’, ‘Orlik’, ‘Belorusskoje Malinovoje’, ‘Spartan’, ‘Lobo’, ‘Pervinka’, ‘Kovalenkovskoje’, ‘Lawfam’, ‘Tellisaare’, and tow apple elite hybrids of Latvian origin- AMD- 19-14-23 and AAMD-31-2-14.