摘要
采用白果浆为原料进行喷雾干燥工艺研究。以进气温度、风量、出气温度、进料质量分数为影响因素,设计了L16(45)的正交试验,对干燥白果粉末性能(含水量(MC)、色差(CD)、平均粒径(MPS)、蛋白质质量分数(wp))进行了分析。结果表明:出口气体温度对白果粉末的MC和wp有显著影响,进料质量分数对白果粉末的MPS有显著影响,进口气体对白果粉末的wp有一定影响。得出白果喷雾干燥制粉的最佳工艺条件为:进气温度190℃,风量120 m3/h,出气温度110℃,进料质量分数10%。在此条件下得到的粉末质量特性:含水量5.20%(质量分数),色差19.76,平均粒径22.0μm,wp 9.83%,均达到最佳质量范围。
Ginkgo biloba Linn. （GB） seed paste was used as testing material of spray drying. L16 （4s） orthogonal experimental design was used. Parameters of inlet air temperature, air flow rate, outlet air temperature, feed concentration were taken as affecting factors. Properties of GB seed powder, i. e. , moisture content （ MC）, color difference （ CD）, mean particle size （ MPS）, protein mass fraction （wp）, were analyzed after spray drying. From analysis of data, it was found that moisture and wp were significantly affected by outlet air temperature, and mean particle size was affected by feed concentration. Inlet air temperature also significantly affected protein mass fraction, but significance was less than that by outlet air temperature. Finally, the optimal conditions were as follows：inlet air temperature 190 ℃, air flowrate 120 m3/h, outlet air temperature 110℃, feed mass fraction 10 %. Powder properties under this condition were： moisture mass fraction 5.20 %, color difference 19.76, mean particle size 22.0 μm, Wp 9.83 %, which reached the range of the best quality, completely.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2010年第2期17-22,共6页
Chemistry and Industry of Forest Products
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
CAFINT2008K05)
国家自然科学基金资助项目(BK2008087)
江苏省林业三项工程项目(lysx(2007)06)
关键词
喷雾干燥
白果
色差
平均粒径
蛋白质
spray drying
Ginkgo biloba seed
color difference
mean particle size
protein
