| 白桦树皮中桦木醇超临界二氧化碳萃取的研究(英文) |
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| 引用本文： | 张玉红,于涛,王洋.白桦树皮中桦木醇超临界二氧化碳萃取的研究(英文)[J].林业研究,2003,14(3). |
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| 作者姓名： | 张玉红 于涛 王洋 |
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| 作者单位： | 东北林业大学，东北林业大学，东北林业大学 哈尔滨150040，中国，哈尔滨150040，中国，哈尔滨150040，中国 |
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| 基金项目： | Natural Science Foundation of Heilongjiang. |
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| 摘 要： | 桦木醇,一种药用五环三萜成分,大量存在于白桦(Betulaplatyphlly)树皮中。白桦树皮于2000年9月采集自黑龙江省塔源林场。超临界流体萃取技术(SFE)是一种新型分离技术,广泛用于药物和天然产物生产。本文研究了利用超临界CO2萃取技术从白桦皮中提取桦木醇的工艺条件,系统分析了携带剂用量、萃取压力和萃取温度等参数对桦木醇提取率的影响。结果表明,最佳的萃取条件为:每克桦树皮粉所用携带剂用量为1.5mL,萃取压力为20Mpa,萃取温度为55C,CO2流量为10kg/h,分离压力和分离温度分别为5.5Mpa和50C。图4参6。
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| 关 键 词： | 白桦 桦木醇 超临界CO2萃取 |
Extraction of betulin from bark of Betula platyphylla by supercritical carbon dioxide extraction |
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| ZHANG Yu-hong,YU Tao,WANG Yang.Extraction of betulin from bark of Betula platyphylla by supercritical carbon dioxide extraction[J].Journal of Forestry Research,2003,14(3). |
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| Authors: | ZHANG Yu-hong YU Tao WANG Yang |
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| Abstract: | Betulin, which is a medicinal pentacyclic triterpene, is abundant in the bark of white birch (Betula platyphlly). The bark of birch was collected at Tayuan Forest Farm of Jiagedaqi, Heilongjiang Province in September 2000. Supercritical fluid extraction (SFE) that is a new separation technology has been used for the processing pharmaceutical and natural products. In this paper, the extraction of betulin from the bark of birch by supercritical CO2 extraction was studied. The authors investigated and analyzed a few parameters such as modifier dosage, extraction pressure and extraction temperature. The optimal extrac-tion conditions showed that the modifier dosage used for per gram bark powder was 1.5 mL, the extraction pressure was at 20 Mpa, and the extraction temperature was at 55 C. The velocity of flow of liquid CO2 was at 10 kg/h. The pressure and tem-perature in separation vessel were at 5.5 Mpa and 50 C, respectively. |
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| Keywords: | Betula platyphlly Betulin Supercritical CO2 extraction |
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