| 没食子酸微晶纤维素酯的制备及性能研究 |
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| 引用本文： | 刘 宁,方桂珍. 没食子酸微晶纤维素酯的制备及性能研究[J]. 食品科学, 2009, 30(22): 149-152. DOI: 10.7506/spkx1002-6300-200922032 |
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| 作者姓名： | 刘 宁 方桂珍 |
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| 作者单位： | 1.东北林业大学 生物质材料科学与技术教育部重点实验室 2.哈尔滨商业大学食品工程学院 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金项目(200602258)；黑龙江省教育厅科学技术面上研究项目(11541078) |
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| 摘 要： | 以微晶纤维素、没食子酸为原料，在催化剂的作用下，采用直接酯化法合成没食子酸微晶纤维素酯。在单因素试验的基础上，对合成时间、温度、催化剂用量、没食子酸和微晶纤维素用量比等因素进行正交试验，确定最佳合成条件为：没食子酸和微晶纤维素的反应物配比(GA:MCC)为4:1(m/m)时，以磷钨酸为催化剂，催化剂用量为相对于没食子酸质量的10%，在温度120℃条件下反应10h。产物具有清除烷基自由基、羟自由基、超氧阴离子自由基的能力，其DPPH 自由基清除率达到80% 以上。
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| 关 键 词： | 没食子酸微晶纤维素酯 抗氧化剂 制备 性能 |
| 收稿时间： | 2008-11-14 |
Synthesis and Properties of Galloylmicrocrystalline Cellulose Gallate |
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| LIU Ning,FANG Gui-zhen. Synthesis and Properties of Galloylmicrocrystalline Cellulose Gallate[J]. Food Science, 2009, 30(22): 149-152. DOI: 10.7506/spkx1002-6300-200922032 |
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| Authors: | LIU Ning FANG Gui-zhen |
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| Affiliation: | 1. Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin150040, China；2. College of Food Engineering, Harbin University of Commerce, Harbin 150076, China |
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| Abstract: | Galloylmicrocrystalline cellulose gallate was synthesized using microcrystalline cellulose (MCC) and gallic acid (GA) as materials at the aid of catalyst. The optimal condition for synthesis was obtained through orthogonal experiments to be 4:1 of GA and MCC, phosphotungstic acid as the catalyst, 10% catalyst based on the amount of gallic acid, reaction at 120 ℃ for 10 h. Products had strong scavenging capability for alkyl free radicals, hydroxyl free radicals and superoxide anion free radicals. The scavenging rate of DPPH free radicals was more than 80%. These investigations will provide fundamental supports for developing anti-oxidative functional materials. |
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| Keywords: | galloylmicrocrystalline cellulose gallate antioxidant synthesis propertie |
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