摘要
采用碘显色法测定烟草中的淀粉含量,并考察萃取方式、提取料液比、加碘量等因素对测定结果的影响。结果表明,料液比为1∶120,超声时间为25min,提取时间为30min时测定结果较理想;方法的回收率大于97%,相对标准偏差小于3%。
The starch content in tobacco was determined with iodine coloration and the influences of extraction methods,material-to-liquid ratio of extraction and iodine addition on determination results were studied.The results indicated that when the material-to-liquid ratio was 1∶120,the ultrasonic time was 25 min and the extraction time was 30 min,the determination results were relatively perfect.Its recovery was higher than 97% and its RSD was smaller than 3%.
出处
《安徽农业科学》
CAS
北大核心
2010年第15期7818-7819,7825,共3页
Journal of Anhui Agricultural Sciences
关键词
烟草
淀粉
碘显色
测定
Tobacco
Starch
Iodine coloration
Determination
