摘要
采用四种方法(折光法、直接干燥法、减压干燥法、卡尔·费休法)检测了果葡糖浆样品中干物质的含量,讨论了上述方法的适用性、准确性和回收率。结果表明:折光法的回收率为95.95%,卡尔·费休法的回收率为98.83%,直接干燥法(105℃、16h、添加海砂)的回收率为99.41%。卡尔·费休法和直接干燥法(105℃、16h、添加海砂)的线性拟合曲线分别为y=0.991x+1.073、y=0.947x+3.932,相关系数分别为0.9998、0.9999。卡尔·费休法和直接干燥法(105℃、16h、添加海砂)测定果葡糖浆中干物质的含量准确可行,能够有效替代折光法;减压干燥法(80℃,真空)不适合检测果葡糖浆中干物质含量。
Four methods,including refractive method,direct drying method,decompression drying method and Karl fischer method,were used for detecting the content of dry matter in high fructose syrup,and the suitability,accuracy and recovery were discussed. The results showed that the recovery rate of dry matter content for direct drying method（105℃,16 h,adding the sand） was best,the data was 99.41%. Karl Fischer method and refractive method were 98.83%,95.95%,respectively. The linear equations for Karl Fischer method and direct drying method were y=0.991x＋1.073 and y=0.947x＋3.932,and the correlation coefficients were 0.9998 and0. 9999 respectively. In conclusion, Karl Fischer method and direct drying method could be effective and alternative for refraction,and decompression drying method（80℃,racuum） was unsuitable for detection dry matter content in high fructose syrup.
出处
《食品工业科技》
CAS
CSCD
北大核心
2015年第8期78-81,共4页
Science and Technology of Food Industry
基金
河北省科技计划项目(12275535,14455507D)
关键词
检测方法
干物质含量
果葡糖浆
折光法
直接干燥法
减压干燥法
卡尔·费休法
detection method
dry matter content
high fructose syrup
refractive method
direct drying method
decompression drying method
Karl Fischer method
作者简介
王娣（1979-），女，在读硕士研究生，工程师，主要从事食品理化检测及科研方面的工作。
通讯作者：张兰天（1977-），女，博士，高级工程师，主要从事食品安全风险评估及研判方面的工作。
