为了确定颗粒冷水可溶性甘薯淀粉的最佳制备条件,采用酒精碱法制备甘薯淀粉,分析了反应温度、反应时间、氢氧化钠溶液用量、水与淀粉(干基)的比例、无水乙醇与淀粉(干基)的比例五个因素对产品冷水溶解度的影响,得出制备颗粒冷水可溶甘...为了确定颗粒冷水可溶性甘薯淀粉的最佳制备条件,采用酒精碱法制备甘薯淀粉,分析了反应温度、反应时间、氢氧化钠溶液用量、水与淀粉(干基)的比例、无水乙醇与淀粉(干基)的比例五个因素对产品冷水溶解度的影响,得出制备颗粒冷水可溶甘薯淀粉的最佳工艺条件。即反应温度为33.9 ℃、反应时间为22 min、氢氧化钠溶液用量为18.1 g 、水与淀粉(干基)的比例为3.6∶1、无水乙醇与淀粉(干基)的比例为3.8∶1。在此条件下制备的甘薯淀粉冷水溶解度为89.07%。展开更多
In this work, the main characteristics of the Qingdao Cold Water Mass were studied by using "the comparison analysis method" based on 1980 temperature,salinity and dissolved oxygen data on the western South ...In this work, the main characteristics of the Qingdao Cold Water Mass were studied by using "the comparison analysis method" based on 1980 temperature,salinity and dissolved oxygen data on the western South Yellow Sea. The formation cause of the water mass was analyzed based on February of 1959 temperature and salinity data for this area and on some other authors’ studies. The results showed that the Qingdao Cold Water Mass has growing and vanishing processes: appears in the last ten days of March; has stable pattern in April; is biggest in its area in May; becomes small in its area in June; vanishes in July. It comes from the northern Shandong Coastal Water and is characterized by low temperature and salinity and high dissolved oxygen. The mass is formed under the joint effects of anticyclonic circulation and solar radiation.展开更多
文摘为了确定颗粒冷水可溶性甘薯淀粉的最佳制备条件,采用酒精碱法制备甘薯淀粉,分析了反应温度、反应时间、氢氧化钠溶液用量、水与淀粉(干基)的比例、无水乙醇与淀粉(干基)的比例五个因素对产品冷水溶解度的影响,得出制备颗粒冷水可溶甘薯淀粉的最佳工艺条件。即反应温度为33.9 ℃、反应时间为22 min、氢氧化钠溶液用量为18.1 g 、水与淀粉(干基)的比例为3.6∶1、无水乙醇与淀粉(干基)的比例为3.8∶1。在此条件下制备的甘薯淀粉冷水溶解度为89.07%。
文摘In this work, the main characteristics of the Qingdao Cold Water Mass were studied by using "the comparison analysis method" based on 1980 temperature,salinity and dissolved oxygen data on the western South Yellow Sea. The formation cause of the water mass was analyzed based on February of 1959 temperature and salinity data for this area and on some other authors’ studies. The results showed that the Qingdao Cold Water Mass has growing and vanishing processes: appears in the last ten days of March; has stable pattern in April; is biggest in its area in May; becomes small in its area in June; vanishes in July. It comes from the northern Shandong Coastal Water and is characterized by low temperature and salinity and high dissolved oxygen. The mass is formed under the joint effects of anticyclonic circulation and solar radiation.