| 马槟榔甜味蛋白的研究Ⅱ．甜蛋白Ⅱ和甜蛋白Ⅰ的比较 |
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| 引用本文： | 李春葆,周使,孙汉董.马槟榔甜味蛋白的研究Ⅱ．甜蛋白Ⅱ和甜蛋白Ⅰ的比较[J].植物分类与资源学报,1985,7(1):1-3. |
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| 作者姓名： | 李春葆 周使 孙汉董 |
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| 作者单位： | 中国科学院昆明植物研究所 |
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| 摘 要： | 从马槟榔（Capparis masaikai Levl．）种子分离鉴定了二种甜蛋白：甜蛋白I（mabinlinⅠ或MaⅠ）分子量MWll600，等电点PⅠll.8;甜蛋白Ⅱ（mabinlinⅡ或MaⅡ）MW 10400，PⅠll.3。另一组分mabinlinⅡ MW10200，pl 11.8，可能是提取过程产物。MaⅡ有84个氨基酸残基，比MaⅠ少15个。它们有80个氨基酸残基是共同的，都是缺丝氨酸和蛋氨酸的单一多肽链。MaⅠ还缺赖氨酸和酪氨酸。测不出有自由SH基。在8 M尿素中用巯基乙醇还原处理，两种甜蛋白分子都可转变为二聚体而失去甜味。
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| 关 键 词： | 马槟榔 甜味蛋白 |
THE STRUCTURES OF NEW DITERPENOIDS,MAOECRYSTAL A-E FROM RABDOSIA ERIOCALYX |
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| Li Chunbao,Zhou Jun and Sun Handong.THE STRUCTURES OF NEW DITERPENOIDS,MAOECRYSTAL A-E FROM RABDOSIA ERIOCALYX[J].Plant Diversity and Resources,1985,7(1):1-3. |
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| Authors: | Li Chunbao Zhou Jun and Sun Handong |
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| Institution: | Kunmming Institute of Botany,Academia sinica |
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| Abstract: | The two new oleanolic acid-type saponins were isolated from the rhizomes of Panax stipuleanatus Tsai et Feng whose chemical structure were elucidated to be oleanolic acid- 3-O-β-D-glucopyranosyl (1→ 3 ) α-L-ara- binofuranosyl (1→ 4 )]-β-D-glucuronopyranoside (1 ) and oleanolic acid-28 -O-β-D-glucopyranosyl]- 3-O-β-D-glucopyranosyl (1→ 3 ) α-L-arabinofu- ranosyl (1→ 4 )]-β-D-glucuronopyranoside (3 ) and were named stipuleano- side R1 and stipuleanoside R2, respectively. |
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| Keywords: | structure new diterpenoids rabdosia maoecrystal |
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