| 1. | Aminocephalosporanic acid 7 - aca
氨基头孢菌烷酸 |
| 2. | Nonadecanoic acid methylester
十九烷酸甲酯 |
| 3. | Aminopenicillanic acid 6 - apa
氨基青霉烷酸 |
| 4. | The synthetic process was improved by using sodium formate instead of sodium 2 - ethylhexanoate and yield of the modified method was also raised to 76 % with low consumption of 6 - apa comparing with the 70 % in the literature
该工艺路线使用甲酸钠代替异辛酸钠，减少了关键中间体6 -氨基青霉烷酸( 6 - apa )的耗用量，收率从文献的70 %提高到76 % 。 |
| 5. | S . fredii can synthesize phb in culture medium of glucose and change its metabolic pathway by intimidation pressure when alkanoates were added int o culture medium . according to this theory , metabolic pathway of p ( hb - hh ) was induced
根据费氏中华根瘤菌在以葡萄糖为碳源时合成phb ，而在烷酸盐提供一定环境胁迫压条件下，改变了代谢方向，我们推导出该菌合成phas的代谢途径。 |
| 6. | The seed was also rich in total sugar , in crude protein , in amino acid and inorganic elements . in addition , the higher antimicrobial activity of alcohol extracts from the seed and pentadecanoic acid containing 18 . 99 % in the unripe seed oils were first found
种子的总糖、粗蛋白、氨基酸、矿质元素含量也较丰富。首次发现种子醇提物有较强的抗菌活性和青果种子油有相对含量高达18 . 99的十五碳烷酸。 |
| 7. | It has not only the characteristic of petrochemical plastics but also has the biodegradability , biocompability and degradable product without toxin . these biologic polymers are new kinds of environment - friendly material that provide a new way to resolve white pollution and can be used as scaffold material in medical tissue engineering
多聚羟基烷酸是一类由生物合成的结构简单的高分子聚合物，它不仅具有石化塑料的特性，而且具有生物可降解性、生物相容性、降解产物无毒性的特性，是一种环境友好型的生物材料。 |
| 8. | Poly - 3 - hydroxybutyrate ( phb ) and other related polyhydroxyalkanoates ( phas ) are biodegradable thermoplastic polyesters stored in numerous bacteria as carbon and energy reserves and now have been regarded as ideal alternatives to traditional petroleum - derived plastics , which cause severe environmental and waste management problems
聚3 -羟基丁酸酯( poly - 3 - hydroxybutyrate ， phb )及其它类型的聚3 -羟基链烷酸酯同属于聚酯类物质，是自然界中多种细菌的碳源及能源储备物。 |
| 9. | Tem image showed that nanorods form after the modification , which were 50 ~ 100nm in width and several microns in length . the rodlike nanostructures may be caused by the special packing of these ots - coated nanotubes through hydrophobic interaction between the long fatty chains . then the lb technique was attempted to assemble the nanorods
使用lb技术对修饰后得到的纳米棒进行了组装，使用原子力显微镜观察形貌，结果表明纳米棒排列混乱无序且有聚集现象;经二十二烷酸( ba )作为分散剂混合做膜后，纳米棒的分散性良好。 |
