控制透氣性包裝袋內大氣成分對新鮮水果蔬菜保鮮技術之研究

Abstract

利用可透氣性膜包裝蔬菜、水果，已被廣泛應用。然對於包裝袋內大氣成分之控制，尚鮮有作基礎研究者。本實驗利用奧氏氣體分析器，依卡爾等氏之濃度進增法測定透氣膜之透氣率，再以袋內果實重量，袋之厚度及面積等介值與蔬果在不同濃度下之呼吸率圖解來預估包裝袋內大氣成分濃度變化。並實際以香蕉、蕃茄包裝行短期之貯藏試驗，測定袋內外氣體交換情形，與預估值做比較。結果顯示，利用此法作為包裝需求之基礎，似有助於蔬果之包裝貯藏。 Green mature banana and tomato were used to study their respiration rate as a function of oxygen concentration. Some permeable films were investigated their permeability to oxygen and carbon dioxide by Karel et. al. method. The oxygen and carbon dioxide concentration in the packaging sealed bag could be predicated by graphical solution in terms of fruit weight, respiration rate, and film parameters such as voluine, thickness and permeability to oxygen and carbon dioxide. Some short-time storage experiments were also held to prove the predicated relations between time of storage and gas exchange under given packaging conditions. The results showed that it is useful in evaluation package requirements for fresh fruits and vegetables.