摘要
连续称重法测定种子或米粒的吸水率,一般采用滤纸吸除种子或米粒表面游离水。谷子米粒由于颗粒小,采用滤纸法容易粘米并损坏米粒,测定速度慢,效率低。本研究采用离心方法,将离心管底部打孔,设置不同转速梯度离心3min。以晋谷21为材料,设定米粒饱和吸水、不饱和吸水实验。研究确定了谷子米粒吸水率离心沥水测定方法的最佳方案为300rpm离心3min。
To test the water absorption rate of seeds or grains, filter papers are usually used to remove the free water from the surface of seeds or grains before weighing. Due to small size, millets of foxtail millet are easy to stick to filter papers or damaged during the removal process, which is inefficient. Here, we evaluated the potential to use centrifugal method to determine the water absorption rate of seeds. Using elite variety Jingu21 as material, soaked millets were centrifuged for 3min at different speeds with centrifuge tubes punched at the bottom with a sewing needle for five tiny holes. Experiments were carried out with the millets either saturated or unsaturated with water. The result showed that 300rpm for 3 rain was optimal for removing the free water from the surface of millet by centrifuging.
出处
《山西农业大学学报（自然科学版）》
CAS
2014年第4期315-319,共5页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
国家自然科学基金项目(31171181)
山西省科技基础条件平台建设项目(2012091004-0103)
山西省留学基金(2010050)
山西农业大学科技创新育种基金(2014yz01)
山西农业大学博士启动基金(2012YJ05)
山西农业大学2013年引进人才博士科研启动项目(2013YJ04)
关键词
米粒
吸水率
离心沥水
Millets
Water absorption rate
Centrifuging
