文献类型：期刊文献

中文题名：不同干燥方式制备白果粉的性能比较

英文题名：Research on Properties of Ginkgo biloba Powder by Different Drying Methods

作者：张彩虹[1,2,3,4] 黄立新[1,2,3,4] 刘伟[1,2,3,4] MUJUMDAR A S[5]

第一作者：张彩虹

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]新加坡国立大学机械工程系

年份：2009

卷号：43

期号：6

起止页码：27-30

中文期刊名：生物质化学工程

外文期刊名：Biomass Chemical Engineering

基金：国家林业局948技术引进项目(2006-4-114);科技部仪器升级改造资助项目(2006JG001900);中央级公益性科研院所基本科研业务费专项资金(CAFINT2008K01和CAFINT2008K05);江苏省自然科学基金(BK2008087);江苏省林业三项工程项目(lysx(2007)06)

语种：中文

中文关键词：喷雾干燥;冷冻干燥;白果;含水量;颗粒度;色泽;蛋白质含量

外文关键词：spray drying ; freeze drying; Ginkgo biloba （GB） seed ; moisture content ; particle size ; color difference; protein content

分类号：TQ91;TQ02

摘要：天然产物白果会因干燥方式的不同,而使得干燥白果粉性能有所差别。本研究分别采用喷雾干燥(SP)与真空冷冻干燥(FD)对白果浆进行干燥处理。然后对两种干燥白果粉的性能(含水量、颗粒度、色泽、蛋白质质量分数)进行对比来比较各自的优越性。喷雾干燥采用参数:风量120m3/h,进料浓度8%(质量分数),进气温度205℃,出气温度100℃,雾化器转速32000r/min。真空冷冻干燥先在-40℃下预冻4h后,再在真空度300Pa下-50℃低温干燥48h。结果发现含水量SPDue to different drying type in Ginkgo biloba （GB） seed, properties of GB seed powder have some difference. In this research, GB seed was dried by spray drying（SP） and freeze drying （FD）. Then each advantage was indicated by comparison between properties of GB powder, i. e. , moisture content, mean particle size, color difference, protein content. In pilot spray drying, it was performed under the following conditions, i. e. , air flow rate at 120 m^3/h, feed concentration at 8% , inlet air temperature at 205 ℃, outlet air temperature at 100℃ and atomizer rate at 3 200 r/min. In freeze drying, GB seed feed was frozen at - 40 ℃ for 4 h, it was dried under the vacuum of 300 Pa for 48 h. It was found that moisture content, mean particle size, color difference, protein content were SP 〈 FD, SP 〈 FD, SP 〈 FD and SP 〈 FD, respectively. The measured results showed that spray drying would provide the dried GB seed powder in low moisture content and small mean particle size, however their color was whiter and their protein was destroyed badly. On the other hand, the dried product via freeze drying had high moisture content and large mean particle size, however their color could keep the color of raw material and their protein content was higher than that by spray drying. From those mentioned above, it was known that spray drying was selected if GB seed powder of low moisture content and small particle was required, and freeze drying was chosen if GB seed powder of high nutrition and born color was required.