黄皮果实采后呼吸特性及品质变化

以大鸡心、小鸡心和圆种黄皮三个品种为试材,探讨常温(28±2℃)贮藏条件下,三种黄皮果实呼吸速率、乙烯产生速率和品质的变化。结果表明,采后黄皮好果率、可溶性固形物和Vc含量显著降低;失重率、可溶性果胶和原果胶含量显著上升;可滴定酸含量在前2d内显著下降,2d后则有不同程度回升;黄皮果实贮藏4d后呼吸速率显著上升,但无呼吸峰出现,属非呼吸跃变型果实。贮藏后期大鸡心黄皮呼吸速率明显高于小鸡心和圆种黄皮。乙烯产生速率采后前4d内显著上升,但4d后大鸡心和小鸡心黄皮乙烯产生速率迅速降低,圆种黄皮则持续上升。

Respiration characteristics and quality changes of wampee fruits during storage

Using 3 cultivars of wampee (Clausena lansium), i.e. "Large chicken heart", "Small chicken heart" and "Round species" as experimental materials, differences of respiration rate, productive rate of ethylene and quality of wampee fruits as well as their changes during storage at room temperature (28±2℃) were investigated,. The results showed that the rate of edible fruit, contents of total soluble solids and Vc decreased significantly, and rate of weight loss and contents of soluble pectin and protopectin increased significantly. Content of titratable acidity decreased rapidly within 2 days and increased 2 days later. Respiration rate raised remarkably after 4 days of storage, but no respiration climax was observed, which suggested that wampee belonged to the non-respiration climacteric fruit. Respiration rate of "Large chicken heart" was much higher than that of "Small chicken heart" and "Round species" in the late period of storage. Ethylene productive rate of wampee fruits increased within 4 days of storage, and then "Large chicken heart" and "Small chicken heart" decreased apparently while "Round species" continued increasing.