秭归地区6个夏橙品种果实主要矿质元素含量和糖酸等营养品质的比较

以秭归地区生长的6个夏橙品种的果实为试验材料,比较品种间主要矿质元素含量和糖酸等营养成分的差异.结果表明:该地区生产的夏橙果实完熟期采收,固酸比虽然较低,但适于鲜食.果肉中K、Fe、Cu和Zn的含量品种间差异未达显著水平;无核夏橙果肉中Ca、Mg元素含量最高,总体矿质营养品质较好.夏橙果汁中可溶性糖以蔗糖、果糖、葡萄糖为主,含有少量肌醇,其总体含量依次递减;无核夏橙的果汁中可溶性糖总量最高,其果糖和葡萄糖的含量显著高于其它品种,伏令夏橙次之,蜜奈夏橙最低;此外,康贝尔和蜜奈夏橙单糖积累高于双糖,而其它品种则双糖含量高于单糖.夏橙果汁中主要有机酸是柠檬酸和苹果酸,奎宁酸含量较少;红夏橙柠檬酸含量最低,其余品种的柠檬酸含量相当;伏令夏橙和奥林达果汁中苹果酸含量显著高于其它品种,蜜奈夏橙和康贝尔夏橙的苹果酸含量显著低于其它品种;各品种果汁中奎宁酸含量无显著性差异.综合本试验结果,认为该地区生产的无核夏橙的营养品质较好,但该品种化渣程度一般,风味较淡,鲜食口味相对较差.

Analysis of Main Mineral Elements,Nutrition Contents in the Fruit of 6 Different Valencia Orange Cultivars [Citrus sinensis(L.) Osbeck]

Contents of mineral element,sugar and organic acids contained in 6 Valencia orange cultivars growing in Zigui area of China were analyzed.Results showed that the fruits were better to be freshly consumed because of their relatively lower ratio of S/A.There was no significant difference in contents of K,Fe,Cu and Zn in pulp of 6 cultivars.In seedless Valencia orange with the highest contents of Ca and Mg and relatively lower content of Mn among the 6 Valencia orange cultivars,the other mineral nutrition were...