Effect of modified atmosphere packaging (MAP) and controlled atmosphere (CA) storage on the quality of snow pea pods (Pisum sativum L. var. saccharatum)
Juan A. T. Pariasca, Takeshi Miyazaki, Hiroyuki Hisaka, Hiroki Nakagawa and Takahide Sato
Postharvest Biology and Technology Vol: 21 Issue: 2 Pages: 213-223
2001
บทคัดย่อ
The effects of precooling, modified atmosphere packaging (MAP) and controlled
atmosphere (CA) storage on the storability of snow pea pods (Pisum sativum
L. var. saccharatum) at 5°C were determined. Bagging pods with
polymethyl pentene polymeric films (PMP) of 25 and 35 
m
thickness, in conjunction with precooling, modified the in-bag atmosphere
concentration to approximately 5 kPa O2 and 5 kPa CO2,
leading to better maintenance of the pod external quality (appearance and
color), as well as internal quality (chlorophyll, ascorbic acid, and sugar
contents). Sensory scores were also maintained. Under CA storage at 5°C, gas
compositions ranging from 5 to 10 kPa O2 with 5 kPa CO2
were the best storage conditions of those tested, since changes in organic
acid, free amino acid and sugar contents, and pod sensory attributes were
slight, corroborating the MAP results. The appearance of pods stored under CA
conditions was much better than that of air-stored pods (control). Low O2
(2.5 kPa with 5 kPa CO2) and high CO2 (10 kPa with 5 kPa
O2) concentrations have a detrimental effect on quality of stored
pods since they developed slight off-flavors, but this effect is reversible
since it was partially alleviated after ventilation.