优化TPA测定南疆冬枣质构特性条件

目的]优化TPA测定南疆冬枣质构特性条件，丰富鲜食枣果实品质评价的内容。方法]以南疆鲜食枣果冬枣为原料，测定其基本营养成分的含量，并应用质构仪质地多面分析（TPA）试验法探索了测试条件对南疆冬枣质构性能的影响。结果]南疆冬枣营养成分的含量分别为Vc3038．00mg／kg，总糖30．300％，总酸0．367％，粗脂肪1．459％，环磷酸腺苷0．228mg／g。最终确定了冬枣的最佳质构特性测定的条件为：形变量20％，最大感应元300N，测试速度40mm／min，最小感应元0．3N。结论]研究可使冬枣质地评价结果更为客观准确，为后续红枣品质评价提供科学依据。

Optimization of Determining the Textural Properties of Winter Jujube in South Xinjiang by TPA

Objective ] To optimize determination conditions for the textural properties of winter jujube in South Xinjiang by TPA method, and enrich fruit quality evaluation content of fresh jujube. Method] With fresh jujube fruit in South Xinjiang as material, the content of basic nu- tritional components was determined, TPA method was used to explore effects of determination conditions on textural properties. Result ] The nutritional components of winter jujube in South Xinjiang are ： Vc 3 038.00 mg/kg, total sugar 30. 300%, total acid O. 367% , crude fat 1. 459% , cyclic adenosine mono-phosphate 0.228 mg/g. The optimal textural properties determination conditions are： 20% deformation, the maximum sensing element 300 N, test speed 40 mm/min, the minimum sensing element 0.3 N. Conclusion] The evaluation results for jujube texture are more accurate and objective, which will provide scientific basis for red dates quality evaluation.