难点：磺酸及其盐类的水解、氨基的水解。
Difficulty: Hydrolytic methods of sulfonic acid, sulphonate and amido.
叠氮还原是向有机分子中引入氨基的重要方法。
Reduction of azides is an important method to introduce amino group to organic molecules.
该染料的甲川链上的中位碳原子与氨基的氮原子相连。
The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of an amino group.
壳聚糖对大肠杆菌的抑菌作用与其氨基的质子化有关。
The antibacterial ability of chitosan to E. coli was related to the protonation of amino group.
它是一个侧链伯氨基的蛋白质，具有重要的结构和化学作用的唯一载体。
It is the only carrier of a side chain primary amino group in proteins, having important structural and chemical roles.
通过明胶活泼氨基的酰化反应，可以接入憎水性的芳基改变明胶的水溶性；
The amino groups of the gelatin are the amenable sites for modification in aqueous solution. Benzoylation of the gelatin with pathalic anhydride can change the solubility.
该染料甲川链上的碳原子与氨基的氮原子相连，而该氮原子又与染料的甲川链形成烯胺。
The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of a group which forms an enamine with the methine linkage of the dye .
选用OPA法作为SPI-糖接枝反应中反应活性点-自由氨基的分析方法，并对该法进行改进。
The OPA method was selected as the analytic methods of the active position, which is the free amino groups, in the SPI-saccharide graft reaction, and was improved.
针对上述情况，本论文较为系统地开展了表面含羧基和氨基的磁性高分子微球的制备及表征研究。
For the above problems, the preparation and characterization of magnetic composite polymer microsphere with carboxyl groups and amido groups are studied in this thesis.
由于甲壳胺的分子结构中有反应活性很高的氨基，通过对氨基的化学改性可以得到具有特殊功能的改性甲壳胺纤维。
Because chitosan possesses in its structure highly reactive primary amine groups, the functional properties of chitosan fibers could be modified by applying various treatments to the fiber structure.
由于甲壳胺的分子结构中有反应活性很高的氨基，通过对氨基的化学改性可以得到具有特殊功能的改性甲壳胺纤维。
Because chitosan possesses in its structure highly reactive primary amine groups, the functional properties of chitosan fibers could he modified by applying various treatments to the fiber structure.
同时丝素蛋白膜用氨气等离子体处理后在表面接入氨基，利用1，3丙磺酸内酯与氨基的反应在材料表面接枝磺酸基团。
Meanwhile, functional groups were also introduced by the reaction of 1,3 propane sultone with amine sites on the surface of silk fibroin film which were produced by NH 3 gas plasma.
选择甲基丙烯酸二甲基氨基乙酯来改性丙烯酸树脂，获得带有反应性氨基的丙烯酸树脂，进而制备了改性丙烯酸环氧粉末涂料。
By using dimethylamino ethyl methacrylate to modify acrylate resin, we acquired a new type of acrylate resin with reactive amino group. Further, we engineered a modified acrylic-epoxy powder coating.
随着时间的推移,蛋壳中的蛋白质分解成其构成成分氨基酸。
Over time, the protein in the eggshell breaks down into its constituent amino acids.
在宇宙中其他的一些物理过程，那些不牵涉到生物体的过程，是可以创造出氨基酸的。
Other physical processes in space, processes that don't involve living organisms, can create amino acids.
他为蛋白质中的每一个氨基酸分配了一个独特的注释。
He assigned (指定) a unique note to each amino acid (氨基酸) is the protein.
事实上，有20种标准氨基酸参与了蛋白质的合成，还有很多不是。
In fact, there are twenty standard amino acids involved in making proteins and lots more that aren't.
如果左旋氨基酸占大多数的话，就说明这些氨基酸从根源上来说是具有生物性的。
A prevalence of left-handed amino acids would indicate they were biological in origin.
这很重要，因为酶的氨基酸序列是由基因决定的。
This is significant, because the amino acid sequence of an enzyme is determined by genes.
M.O.A 这种有机分析器令人印象深刻的原因之一是：它不仅检验了氨基酸是否存在，而且还测试出了氨基酸的旋向性。
One reason the M.O.A., the organic analyzer is so impressive is that it tests not just for the presence of amino acids but also for the handedness of amino acids.
他们尤其想在土壤中找到的是氨基酸。
What they'll look for specifically in the soil is amino acids.
如果发现了氨基酸，并且它们普遍表现出同一种偏向性——要么像地球上的氨基酸一样是左旋的，要么是右旋的，那将会格外有趣。
If amino acids are found, it would be especially interesting if they show a prevalence of one type of handedness, either left, like amino acids on Earth, or right.
经凝胶电泳分析，发现四对实验对象中有两对的酶的氨基酸序列略有差异。
Analysis by gel electrophoresis revealed slight differences in amino acid sequence of the enzymes of two of the four pairs.
研究这种药草的农学家发现，它会产生大量的组氨酸，这种氨基酸在试管溶液中会使这些金属具有化学惰性。
Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.
氨基酸是蛋白质的组成部分。
与氨基寡糖素不同，这五种众所周知的植物激素是多效性的，而不是特异性的；也就是说，每一种对植物的生长发育都有不止一种作用。
Unlike the oligosaccharins, the five well-known plant hormones are pleiotropic rather than specific; that is, each has more than one effect on the growth and development of plants.
组成地球上蛋白质的那20个（氨基酸）都是左旋氨基酸。
The twenty that make up the proteins on Earth are all left-handed.
蜂毒眀肽是一种由18种氨基酸构成的肽神经毒素。
蜂毒眀肽是一种由18种氨基酸构成的肽神经毒素。
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