Macroporous Resin for Purifying Flavonoids from Leaves of Helianthus tuberosus L.
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摘要: 探索大孔树脂分离菊芋叶总黄酮的工艺,分离最佳工艺条件是:大孔树脂型号为X-5;上样流速2 BV·h-1,洗脱液为70%的乙醇,体积为2 BV,控制流速2 BV·h-1。纯化后菊芋叶总黄酮含量提高了3.57倍,结果表明大孔树脂X-5对菊芋叶总黄酮的纯化作用良好。纯化后的菊芋总黄酮有一定还原力。Abstract: Purification of flavonoids extracted from leaves of Helianthus tuberosus L. utilizing a macroporous resin was investigated. The optimized processing conditions included the use of X-5 resin in a volume twice of BV, a solution feeding rate at 2 BV/h, and 70% ethanol for rinsing. With the resin filtration, the flavonoid content in the extract increased 3.57 times exhibiting a significant reducing capacity.
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Key words:
- Helianthus tuberosus L. /
- macroporous resin /
- flavonoids
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表 1 大孔树脂含水量
Table 1. Water content in macroporous resins
树脂名 AB-8 DM130 S-8 D101 X-5 DM301 湿重/g 1 1 1 1 1 1 干重/g 0.31 0.33 0.32 0.29 0.38 0.27 树脂含水量/g 0.69 0.67 0.68 0.71 0.62 0.73 表 2 大孔树脂静态吸附量
Table 2. Static adsorption of macroporous resins
树脂名 AB-8 DM130 S-8 D101 X-5 DM301 吸光度 0.0850 0.0890 0.0600 0.0790 0.0700 0.0910 总黄酮/(mg·mL-1) 0.0235 0.0269 0.0022 0.0184 0.0107 0.0286 平衡吸附量/(mg·g-1) 1.8794 1.9557 2.2125 1.8174 2.4980 1.5817 吸附率/% 86.58 84.63 98.74 89.49 93.87 83.66 表 3 大孔树脂静态解吸率
Table 3. Static desorption of macroporous resins
树脂名 AB-8 DM130 S-8 D101 X-5 DM301 吸光度 0.2010 0.2000 0.0660 0.2100 0.2260 0.1950 总黄酮/(mg·mL-1) 0.1223 0.1214 0.0073 0.1299 0.1436 0.1172 解吸率/% 80.67 81.95 4.24 82.93 87.36 80.00 表 4 乙醇用量对X-5解吸率的影响
Table 4. Desorption rates of X-5 with ethanol in different concentrations
乙醇用量/% 10 30 50 70 90 吸光度 0.089 0.164 0.216 0.256 0.250 总黄酮量/(mg·mL-1) 0.0269 0.0908 0.1350 0.1691 0.1640 解吸率/% 13.95 47.06 70.01 87.67 85.02 -
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