บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Carotenoids biosynthetic gene-expression during the peach field ripening and influence of postharvest ethylene control on carotenoids contents

Cecchi F., De Martino G., Giuliano G., Bellincontro A., Botondi R., Mencarelli F.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.78

2004

บทคัดย่อ

Carotenoids biosynthetic gene-expression during the peach field ripening and influence of postharvest ethylene control on carotenoids contents    The carotenoids content in fresh fruits is very important for the health-promoting properties in human life.Peach is o­ne the fruits with higher content in carotenoids.In this work, peaches (Prunus persica L.) from two cultivars were treated with 1-MCP (0.5 ppm for 20 h), CO2 and N2 (for 48 h), cold H2O (1 °C for 1 hour), stored at 10 °C and then moved for two days at 20 °C in order to investigate the control of ripening features and carotenoids content.

Flavor Crest and Springbell peaches picked respectively at an advance and early ripening stage, benefited of 1-MCP treatment in term of firmness maintenance and good flavour (panel test).Hydrocooled peaches resulted firm but with poor flavour.

Total carotenoids increased during the postharvest period in control Springbell peaches while all the other treatments induced a loss of carotenoids.Peaches from morning sun exposure showed an increasing pattern of carotenoids content during the postharvest period: in contrast peaches from afternoon sun exposure tended to loose carotenoids.In Flavor Crest peaches, picked at an advanced ripening stage, carotenoids content decreased even in control fruit; hydrocooling reduced this loss.Moreover gene expression of the main enzymes involved in carotenoids biosynthesis is under study.