บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of quarantine cold treatment on early-season Spanish mandarins

Cuquerella J.; Salvador A.; Martinez-Javega J.M. and Navarro P.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.99

2004

บทคัดย่อ

Effect of quarantine cold treatment on early-season Spanish mandarins The purpose of this study was to determinate the picking and handling conditions of early-season Spanish mandarins to be exported to USA under cold quarantine treatment maintaining the good quality of the fruit.

Mandarins cv. ‘Clemenules’, ‘Marisol’ and ‘Clemenpons’ were submitted to degreening treatment (22°C in continuous flow with 0-5 ppm ethylene for 0, 48 or 72 hours), then stored at 0.8-1.8°C for up 19 days followed by 7 days at 20°C, simulating transport and marketing to USA. Changes in external colour, firmness, total soluble solids (TSS), acidity (TA), juice ethanol content and sensory evaluation were evaluated.

Depending o­n the citrus colour index (CII) at harvest, different degreening conditions are reported to achieve a good external quality at the end of the trial. To avoid excessive softening at the end of the transport and marketing it is suggested equatorial deformation percentage (EDP) values lower than 5%. At harvest, high TSS/TA ratio can result in insipid flavor. Increase of Juice ethanol content was not enough for off-flavors development. Water waxing was necessary to reduce weight losses and physiological disorders incidence.