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植物研究 ›› 2015, Vol. 35 ›› Issue (3): 471-475.doi: 10.7525/j.issn.1673-5102.2015.03.024

• 论文 • 上一篇    下一篇

白藜芦醇微粉的制备、表征与抗氧化功能评价

王崑仑1;赵修华1;祖元刚1*;李家磊2   

  1. 1.东北林业大学森林植物生态学教育部重点实验室,哈尔滨 150040;
    2.黑龙江省农业科学院食品加工研究所,哈尔滨 150086
  • 出版日期:2015-05-20 发布日期:2015-06-24
  • 基金资助:
     

Preparation, Characterization and Function Evaluation of Ultrafine Resveratrol Powder

WANG Kun-Lun1;ZHAO Xiu-Hua1;ZU Yuan-Gang1*;LI Jia-Lei2   

  1. 1.Key Laboratory of Forest Plant Ecology,Ministry of Education, Northeast Forestry University,Harbin 150040;
    2.Food Processing Institute,Heilongjiang Academy of Agricultural Sciences,Harbin 150086
  • Online:2015-05-20 Published:2015-06-24
  • Supported by:
     

摘要: 实验利用超临界SAS法使白藜芦醇在超临界状态下反溶剂重结晶,来制备白藜芦醇微粉借助超临界反溶剂法(SAS)来减小白藜芦醇的粒径从而提高其抗氧化能力。制备的条件为:反应温度为50℃,反应压力为20 MPa,白藜芦醇乙醇溶液的浓度为9 mg·mL-1,给药速度为1 mL·min-1。利用激光粒度仪和扫描电镜检测白藜芦醇微粉,结果显示白藜芦醇粉体较原粉粒径大大降低,平均粒径为0.68±0.03 μm。而后通过了傅里叶红外光谱、X衍射仪、高效液相色谱和质谱检测白藜芦醇微粉和原粉的各项特性。结果显示SAS过程并没有改变白藜芦醇的化学结构,但白藜芦醇微粉的结晶度大大降低,白藜芦醇的纯度也从原粉的98.5%纯化为微粉的99.2%。利用果蝇抗衰老实验来检测白藜芦醇的抗氧化能力。结果表明在白藜芦醇溶液浓度为,2.5、5和10 mg·mL-1时,白藜芦醇微粉的抗氧化能力均高于原粉和空白实验。这说明白藜芦醇的不但具有抗氧化能力,而且白藜芦醇微粉在效果上优于白藜芦醇原粉。这为提高白藜芦醇品质提供了依据。

关键词: 微粉, 超临界, 理化性质, 白藜芦醇, 溶出度, 抗氧化能力

Abstract: By supercritical SAS, we made the resveratrol anti solvent recrystallization to prepare ultrafine resveratrol powder under supercritical condition. The conditions were under 50℃, 20 MPa, resveratrol ethanol solution concentration of 9 mg·mL-1, and sample solution flow rate of 1 mL·min-1. We analyzed the particles by Dynamic Light Scattering(DLS) equipment and Scanning Electron Microscopy(SEM). The particle size of the particles was greatly reduced and the average particle size was 0.68±0.03 μm. In addition, characterization of ultrafine Res and raw-resveratrol were tested by Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction(XRD), High performance liquid chromatography(HPLC) and Liquid chromatography-mass spectrometry(LC-MS). SAS process didn't change the chemical structure of Res. The chemical structure of resveratrol was unaffected by the SAS process. The degree of crystallinity of the u-Res particles greatly reduced. We used the purity of the u-Res particles increased from 98.5% to 99.2% during the SAS process. Using drosophila anti-aging experiments to detect the oxidation resistance of resveratrol. The antioxidant capacity of resveratrol powder were higher than that in the second-stage and blank experiment under the concentration of resveratrol solution, 2.5, 5 and 10 mg·mL-1. The resveratrol had the oxidation resistance, and ultrafine resveratrol powder was better than raw-resveratrol powder.

Key words: ultrafine powder, supercritical antisolvent, micron particl, resveratrol, dissolution rate, antioxidant capacity

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