บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Postharvest quality and shelf-life of mango cultivars grown at Sinaloa, Mexico

Araiza L.E., Osuna E.T., Siller C.J.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.58

2004

บทคัดย่อ

Postharvest quality and shelf-life of mango cultivars grown at Sinaloa, Mexico  New mango orchards along the west coast of Mexico has been growing in the last years, due mainly to the economic perspectives presented with the increasing demand o­n the international markets.One of the main characteristics considered for the growers o­n the new orchards are the selection of new cultivars with high quality fruit and extended shelf-life.

Sinaloa state has been o­ne of the most important mango producers for exportation in Mexico with the traditional varieties such as Haden, Kent, Tommy Atkins and Keitt.Growers continuously evaluate the adaptation, yield, disease resistance, quality and shelf-life of new varieties to their areas.On this work, we evaluate quality and shelf-life of three relatively promising new cultivars to the area and compared them with two of the traditional o­nes.

The experiment was set using mango fruits from five different cultivars (Kent, Tommy Atkins, Ataulfo, Gouveia and Osteen) harvested at physiological maturity.Fruit were evaluated at arrival and stored under simulated marketing conditions (20 + 2 °C and 80% RH) to follow the changes o­n firmness, colour, tritatable acidity, total soluble solids content and pH, every three days.Weight loss, respiration rate and ethylene production were determinated daily.Morphological characteristics such as seed weight, were determinated o­nce o­n 50 fruits by cultivar.Total soluble solids content increased in all cultivars reaching after 15 days values that ranged from 15.0 °Brix o­n Osteen, up to 20.4 °Brix o­n Gouveia.Tommy Atkins presented the firmer fruits at the end of the study with 35.5 N, while Osteen was the sorter with 5.7 N.Based o­n appearance, the new varieties evaluated did not presented extended shelf-life as compared with Tommy Atkins and Kent.Shelf-life of Gouveia and Osteen stored under the simulated marketing conditions was two weeks.