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[摘要]
目的 建立并优化大孔树脂法纯化蓝莓花青素的最佳工艺条件,为蓝莓花青素工业化生产提供参考。方法 选用HPD-600、HPD-100A、DM130、D4020、D3520 5种大孔树脂,比较蓝莓花青素粗提物在其上的静态吸附及解吸效果,筛选适合蓝莓花青素纯化的大孔树脂,通过单因素实验和正交试验分析蓝莓花青素样液质量浓度、pH值、吸附体积流量、洗脱液乙醇体积分数、乙醇用量及洗脱体积流量对树脂吸附-解吸的影响。结果 D3520大孔树脂是纯化蓝莓花青素的最佳树脂,当大孔树脂上样量(g)与蓝莓花青素的上样量(mL)为1:5时,最佳工艺为蓝莓花青素样液pH 3,质量浓度为1.0 mg/mL,吸附体积流量为2.0 mL/min时,吸附率为92.82%;洗脱液乙醇体积分数为70%;洗脱体积流量为2.0 mL/min,洗脱液用量为60 mL,解吸率为91.58%。结论 纯化后的蓝莓花青素色价提高了11倍,纯化后花青素的质量分数为96.17%,纯度提高了5倍,花青素的得率为14.271%,此工艺有效地提高了蓝莓花青素的纯化效率,适用于蓝莓花青素日后的工业化生产。
[Key word]
[Abstract]
Objective The separation and purification of anthocyanin from blueberry was studied to determine the optimum purification conditions. Methods Static adsorption and desorption analytical test was conducted to screen the best macroporous resin from HPD-600, HPD-100A, DM130, D4020, and D3520 for purification of anthocyanins from blueberry. Effects of the sample liquid concentration, pH, adsorption flow rate, eluent ethanol concentration, eluent ethanol amount, and elution flow rate were investigated through dynamic adsorption-desorption test by single factor and orthogonal experiments. Results D3520 resin was the most effective resin for adsorption and desorption of anthocyanins from blueberry, when the amount of macroporous resin (g) and the amount of anthocyanin from blueberry (mL) was 1:5. The optimal conditions were as follows:The concentration of sample was 1.0 mg/mL, adsorption flow rate was 2.0 mL/min, and sample solution pH value was 3. Under the optimal conditions, eluent ethanol concentration 70%, elution flow rate 2.0 mL/min, eluent ethanol amount 60 mL, and the adsorption rate and desorption rate can reach 92.82% and 91.58% respectively. Conclusion The color value of purified products under the optimized conditions was increased by 11 times; The purity fraction of anthocyanin was 96.17% and the purity was increased by 5 times; And the yield of anthocyanin was 14.271%. This process effectively improves the efficiency of anthocyanin from blueberry purification, which is suitable for the future production of anthocyanin from blueberry.
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[基金项目]
吉林省科技发展计划项目(20140204063YY);杭州市钱江学者计划(2015年)