不同产地核桃坚果的综合性状评价  

Comprehensive Evaluation of Walnuts from Different Growing Regions

作　　者：王中奎[1] 王超[1] 关法春[1] 

机构地区：[1]西藏大学农牧学院,西藏林芝860000

出　　处：《食品科学》2013年第15期100-103,共4页Food Science

基　　金：西藏自治区自然科学基金项目

摘　　要：对来自不同产地(黑龙江桦南县、新疆阿克苏市和西藏林芝县)核桃综合性状进行对比研究,并运用投影寻踪技术对不同产地核桃的综合性状进行评价。结果表明:不同产地核桃外部感官指标之间差异明显;产地新疆阿克苏的核桃果形指数(1.54)显著高于其他产地核桃;产地黑龙江桦南的核桃果壳厚度显著高于其他产地核桃,但果仁质量显著低于产地新疆阿克苏和西藏林芝的核桃;不同产地的核桃出仁率差异显著,产地新疆阿克苏的核桃出仁率最高(56.15%),产地黑龙江桦南德核桃(16.84%)出仁率最低;产地西藏林芝、新疆阿克苏的核桃果仁粗脂肪含量分别为61.45%、59.87%,均显著高于产地黑龙江桦南的核桃果仁粗脂肪含量,粗蛋白含量则以黑龙江桦南的核桃含量最高(20.98%),并显著高于其他产地核桃;综合评价可知,产地新疆阿克苏的核桃评价值最高(投影值2.0703),其次依次为产地黑龙江桦南、新疆阿克苏的核桃,出仁率、果壳厚度是本次坚果综合性状评价最关键的两个指标。China has a rich and diverse walnut resource. There are considerable differences in appearance quality, economic characters and nutritional components of walnuts from different growing regions. In this study, the comprehensive characters of walnuts from different climate areas （Huanan county of Heilongjiang, Aksu city of Xinjiang, and Linzhi county of Tibet） were explored by projection pursuit method. An obvious difference in sensory indices of walnuts from different geographic origins was observed. The fruit shape index of walnuts from Xinjiang was 1.54, which was significantly higher than that of walnuts from Heilongjiang and Tibet. Similarly, walnuts from Heilongjiang had significantly higher shell thickness than walnuts from Xinjiang and Tibet despite having lower nut weight. A significant difference in kernel rate of walnuts from different geographic origins was observed, the kernel rates of walnuts from Xinjiang and Heilongjiang were 56.15% and 16.84%, respectively. Walnuts from Tibet and Xinjiang showed a significantly increased level of crude fat （61.45% and 59.87%, respectively） when compared with those from Heilongjiang. Walnuts from Heilongjiang exhibited the highest protein content. Comprehensive evaluation showed that the projection value of walnuts from Xinjiang was the highest （2.0703） and kernel rate and shell thickness were the most critical indicators for comprehensive evaluation.

关 键 词：核桃 综合性状 投影寻踪 评价 

分 类 号：TS202.1[轻工技术与工程—食品科学]