The Quality of King Oyster Mushrooms Stored with a Master Packaging System Consisting of Inner Individual Packs and an Outer Liner Bag to Be Dismantled at a Retail Display

摘要

To better handle variable temperature regimes in produce distribution, a master packaging system consisting of a double-layered gas barrier has been applied to fresh king oyster mushrooms. A secondary master package wrapping four individual 350 g packages was designed to be dismantled when moved to the 10℃ retail display from the presale storage at 0℃. Different numbers of microperforations (10, 15 and 20) were tested on the inner individual packages as a control variable to create and maintain benefi-cial modified atmospheric conditions around the mushrooms. The microperforated individual packages could all attain an effective range of modified atmosphere during the two stages of storage at 0 and 10℃ while the package with 15 microperforations best reached the desired modified atmosphere of 1 - 3% O_2 and 10 - 15% CO_2. The individual packages in the master packaging system had better preservation in quality attributes, such as weight loss, mold/yeast count and texture retention, compared with the control perforated packages of a normal atmosphere.