| 酯交换法合成D-异抗坏血酸棕榈酸酯及其抗氧化性能 |
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| 引用本文： | 郑大贵,肖竹平,叶红德,叶青,余泗莲,谢国豪.酯交换法合成D-异抗坏血酸棕榈酸酯及其抗氧化性能[J].精细化工,2004,21(6):450-451,480. |
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| 作者姓名： | 郑大贵 肖竹平 叶红德 叶青 余泗莲 谢国豪 |
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| 作者单位： | 上饶师范学院,化学系,江西,上饶,334001 |
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| 摘 要： | 24℃下,2.9gD 异抗坏血酸和3.8g棕榈酸甲酯分别缓慢加入到14mL的浓硫酸中,搅拌反应24h。反应混合物加入到冰水中,用乙醚萃取,洗涤,除去乙醚,粗产品用甲苯重结晶,得到4.6gD 异抗坏血酸棕榈酸酯,产率79%。用FTIR对产品进行了表征。按国标(GB/T5009.37—1996)方法将产品用于新鲜茶籽油进行抗氧化性能实验,结果表明,D 异抗坏血酸棕榈酸酯是一种比L 抗坏血酸棕榈酸酯更好的油溶性抗氧化剂。
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| 关 键 词： | D-异抗坏血酸 L-异抗坏血酸 棕榈酸甲酯 抗氧化性能 食品添加剂 |
| 文章编号： | 1003-5214(2004)06-0450-03 |
Synthesis of D-Isoascorbyl Palmitate by Transesterification and Its Antioxidation Capacity |
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| ZHENG Da-gui,XIAO Zhu-ping,YE Hong-de,YE Qing,YU Si-lian,XIE Guo-hao.Synthesis of D-Isoascorbyl Palmitate by Transesterification and Its Antioxidation Capacity[J].Fine Chemicals,2004,21(6):450-451,480. |
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| Authors: | ZHENG Da-gui XIAO Zhu-ping YE Hong-de YE Qing YU Si-lian XIE Guo-hao |
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| Abstract: | D-Isoascorbic acid (2.9 g) and con.H_2SO_4 (14 mL) are gradually mixed at 24 ℃.Methyl palmitate (3.8 g) is slowly added and the mixture is stirred for 24 h.By addition of H_2O,extraction with Et_2O,washing of the solution,removal of Et_2O and recrystalization from toluene,D-isoascorbyl palmitate (D-IAP) is obtained in 79% yield.The product is characterized by FTIR.Its antioxiation capacity in tea seed is tested according to GB/T 5009.37—1996.Preliminary results show that D-IAP is a better antioxidant than L-IAP. |
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| Keywords: | D-isoascorbic acid L-isoascorbic acid methyl palmitate antioxidation capacity food additive |
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