บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Active packaging development to improve ‘Starking’ sweet cherry post-harvest quality.

Serrano M., Martinez-Romero D., Guillen F., Castillo S., Valverde J.M., Valero D.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 16

2004

บทคัดย่อ

Active packaging development to improve ‘Starking’ sweet cherry post-harvest quality.  ‘Starking’ sweet cherry is considered a late season cultivar in Alicante (Spain) with several problems for commercialization mainly due to incidence of decay and a fast loss of sensory quality, both for fruit and green stem.Based o­n this issue, an active packaging has been developed based o­n the addition of 1 ml eugenol (essential oil from oregano) to trays and then sealed with polypropylene bags to generater a MAP.Also, cherries in MAP (without eugenol) and non-packaged fruits were selected and served as controls.Both, bags and non-packaged cherries were stored during 16 days at 2 °C and 90% RH.Samples were taken after 2, 6, 9, 13 and 16 days in which the internal atmosphere composition, weight loss, colour, °Brix-titratable acidity ratio, firmness and visual aspect of the stem were evaluated.

Steady state atmosphere was reached after 9 days of cold storage with 2-3% of CO2 and 10-11% of O2 with no significant differences between treated and control.When fruit quality parameters were determined, those treated with eugenol showed a significant reduction in weight loss compared with control, either under MAP or not.Contrarily, colour parameter L* and fruit firmness remained significantly higher during storage in treated cherries than in controls, under MAP or not, while no significant differences were obtained in relation to °Brix-titratable acidity ratio.When the stem was evaluated, this remained green in cherries stored in MAP, while they became brown in control.Finally, the microbial analysis showed that eugenol treatment reduced yeast, mould and total aerobic mesophylic colonies 2 and 3-log CFU compared with control under MAP or not, respectively.In conclusion, the use of MAP in combination with eugenol is an effective tool o­n maintaining cherry fruit quality and reducing the occurrence of decay.