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| 陶瓷膜超滤纯化褐藻酸钠及其分子量测定 | |
| 引用本文： | 田洪芸,王洪新,黄智锋,王远辉,戴易兴,秦晓娟. 陶瓷膜超滤纯化褐藻酸钠及其分子量测定[J]. 食品工业科技, 2012, 33(4): 168-172,176 |
| 作者姓名： | 田洪芸 王洪新 黄智锋 王远辉 戴易兴 秦晓娟 |
| 作者单位： | 1. 江南大学食品学院,江苏无锡,214122 2. 江南大学食品学院,江苏无锡214122／食品科学与技术国家重点实验室,江苏无锡214122 3. 合肥创想能源环境科技有限公司,安徽合肥,230000 |
| 摘 要： | 采用截留分子量为10000u的陶瓷超滤膜纯化褐藻酸钠溶液,考察运行时间、跨膜压差(TMP)、料液稀释倍数和操作温度对膜通量的影响,分析各条件下稳定通量的变化规律。研究表明:实验设备运行1h后膜管通量开始稳定,当跨膜压差为0.08MPa、料液稀释倍数为3倍、操作温度50℃时,稳定通量维持在75L/(h·m2)。通过超滤纯化制得的褐藻酸钠的纯度为96.25%,圆二色谱法测得β-D-甘露糖醛酸和α-L-古罗糖醛酸量的比值为1.4845,高效凝胶渗透色谱法测得平均相对分子量分别为2.13×106u,并对所得褐藻酸钠的光谱学性质进行了研究。 |
| 关 键 词： | 褐藻酸钠 陶瓷膜 电导率 高效凝胶渗透色谱 圆二色谱 |
Purification of sodium alginate by ceramic membrane and the determination of molecular weight |
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| TIAN Hong-yun,WANG Hong-xin,HUANG Zhi-feng,WANG Yuan-hui,DAI Yi-xing,QIN Xiao-juan. Purification of sodium alginate by ceramic membrane and the determination of molecular weight[J]. Science and Technology of Food Industry, 2012, 33(4): 168-172,176 | |
| Authors: | TIAN Hong-yun WANG Hong-xin HUANG Zhi-feng WANG Yuan-hui DAI Yi-xing QIN Xiao-juan |
| Affiliation: | 1(1.School of Food Science and Technology,Jiangnan University,Wuxi 214122,China;2.State Key Laboratory of Food Science and Technology,Wuxi 214122,China;3.Hefei Transcendent Technology Co.,Ltd.,Hefei 230000,China) |
| Abstract: | The use of a ceramic membrane of 10000u to purify alginate was evaluated.The effects of operation temperature,trans-membrane pressure(TMP) and the ratio of liquid dilution on permeation flux were investigated.The results showed that permeation flux tended to remain stable after running 1h.A stable permeation flux of 75L/(h·m2) was obtained under the optimized conditions which were 0.08MPa of trans-membrane pressure,3 of the ratio of dilution liquid and 50℃ of operation temperature.The purity of sodium alginate obtained through the purification process was 96.25%.The circular dichroism method showed that the M/G was 1.4845.The average relative molecular weight was 2.13×106u measured by HPGFC,and the spectral properties of sodium alginate were investigated. |
| Keywords: | sodium alginate ceramic membrane conductivity HPGFC circular dichroism |
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