lactam中文什么意思

n.
【化学】内醯胺，内酰胺。

• aminocaproic lactam:    氨基己酸内酰胺
• aristolo lactam:    马兜铃内酰胺
• beta lactam:    β内酰胺

例句与用法

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1. Panipenem and imipenem exhibited comparable in vitro antimicrobial activity , and their activity against gram - negative bacteria such as k . pneumoniae and enterobacter spp was slightly inferior to meropenem , superior to that of ceftazidime , fluroquinolones and - lactam and - lactamase inhibitor combinations
   三种碳青霉烯类抗生素体外抗菌作用优于头孢他啶、 -内酰胺类抗生素与-内酰胺酶抑制剂合剂、氟喹诺酮类等其它受试药物。
2. D - amino acids as unnatural chiral products are important intermediates in the synthesis of products , such as - lactam semisynthetic antibiotics , antiviral agents , artificial sweeteners , pesticide , peptide hormones , and pyrethroids , etc . though bioconversion of d - amino acids using microbial cells has been realized in industrialization for decades , some limited factors hinder the development of d - amino acid production , and ultimately result in shortage of the raw material in the related industrial fields
   目前，用微生物菌体转化生产d -型氨基酸的工艺路线已经产业化，但天然菌体转化工艺存在一些限制因素，阻碍了d -型氨基酸的扩大生产，导致产品短缺。因此，利用基因工程菌生物转化d -型氨基酸已成为世界氨基酸产业的新潮流。
3. Considering alcaligenes faecalis pencillin g acylase ( afpga ) , which possesses the attractive characteristics for beta - lactam antibiotics conversions , the gene of pga was cloned into two expressing vector pkkfpga and psmlfpga . both the constructed plasmids psmlfpga and pkkfpga contained the pga gene , trc promoter and rrnb transcript terminator , differ in the replicon and antibotic marker , pkkfpga contained multicopy replicon ( cole 1 ) and ampicillin marker . while psmlfpga contained medium - copy replicon ( p15a ) and tetracycline marker
   本文将粪产碱杆菌青霉素g酰化酶( afpga )基因构建表达载体pkkfpga和psmlfpga ， pkkfpga和psmlfpga均含trc启动子、青霉素g酰化酶基因、 rrnb转录终止子，其中pkkfpga含有氨卞青霉素抗性基因和cole1高拷贝复制子；而psmlfpga含有四环素抗性基因和p15a中拷贝复制子。