Comunicaciones y ponencias de congresos DTA - ETS Biltzarretako komunikazioak eta txostenak
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Publication Open Access Application of gibberellic acid to 'Sweetheart' sweet cherries: Effects on fruit quality at harvest and during cold storage(ISHS, 2003) Horvitz Szoichet, Sandra Susana; Godoy, Carlos; López Camelo, Andrés; Yommi, Alejandra; Tecnología de Alimentos; Elikagaien TeknologiaLarge cherry fruit are preferred by most consumers and gibberellic acid (GA) can be used to increase fruit size and firmness. The effects of a preharvest GA application on quality of 'Sweetheart' cherries at harvest and during cold storage were evaluated. Treated trees were sprayed with 10 and 30 ppm GA when fruit color was straw-yellow (approx. 74 °hue). When fruit reached their commercial color (approx. 21 °hue), samples of 20 fruit/tree were harvested and quality was evaluated in terms of: weight, size, color, firmness, flesh/stone ratio, pedicel aspect, soluble solids content (SSC) and cracking index. Additional samples of 20 units were placed in plastic trays, packed in LDPE bags and stored at 0 °C for 21 days. Fresh weight loss, firmness, color, SSC and pedicel condition were measured on a weekly basis. Treated fruit reached harvest maturity 5 days later than control fruit and were larger, heavier, and firmer compared with controls. 10 ppm GA-treated fruit had the highest flesh/stone ratio, followed by 30 ppm GA and untreated fruit, while no significant differences were found for SSC and cracking index. During cold storage, fruit treated with 30 ppm GA were significantly firmer than those given 10 ppm GA and these, in turn, were firmer than the controls. Fresh weight loss was negligible and firmness increased towards the end of the experiment in all the treatments. GA treatments did not affect color or SSC, but increased the percentage of cherries with commercial pedicels. The 5-day delay in the harvest date, extending the fruit growing period, may be responsible for the increase in size, weight and firmness obtained with GA. These differences were also maintained during the 21 days of cold storage when treated fruit maintained a superior quality to control fruit.Publication Open Access Effects of modified atmosphere packaging on quality and shelf-life of partially dehydrated red bell pepper(ISHS, 2015) Horvitz Szoichet, Sandra Susana; Cantalejo Díez, María Jesús; Tecnología de Alimentos; Elikagaien Teknologia; Institute on Innovation and Sustainable Development in Food Chain - ISFOODPublication Open Access Effects of temperature and semi-permeable film on quality of stored artichokes (Cynara scolymus L.)(ISHS, 2001) Yommi, Alejandra; Giletto, C.; Horvitz Szoichet, Sandra Susana; López Camelo, Andrés; Tecnología de Alimentos; Elikagaien TeknologiaArtichoke's shelf life at room temperature is limited to only a few days. Quick removal of field temperature and storage at 0-5°C with 90% RH contribute to maintain quality (Miccolis et al., 1988). Previous results (Yommi et al., 1996) indicate that packing with HDPE reduced weight loss and extended postharvest life of artichoke heads. To prevent internal browning, the equilibrium atmosphere inside the bags should be above 2% O2 and below 3% CO2 (Saltveit, 1989). The aim of this study was to evaluate quality changes of stored artichokes at 5°C or room temperature and packed with different semi-permeable films.