英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:


请选择你想看的字典辞典:
单词字典翻译
alkaloids查看 alkaloids 在百度字典中的解释百度英翻中〔查看〕
alkaloids查看 alkaloids 在Google字典中的解释Google英翻中〔查看〕
alkaloids查看 alkaloids 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Alkaloid - Wikipedia
    [1] Alkaloids are a broad class of naturally occurring organic compounds that contain at least one nitrogen atom Some synthetic compounds of similar structure may also be termed alkaloids [2] Alkaloids are produced by a large variety of organisms including bacteria, fungi, plants, and animals [3]
  • Alkaloid | Definition, Structure, Classification | Britannica
    Alkaloid, any of a class of naturally occurring organic nitrogen-containing bases Alkaloids have diverse and important physiological effects on humans and other animals Well-known alkaloids include morphine, strychnine, quinine, ephedrine, and nicotine
  • Alkaloid - an overview | ScienceDirect Topics
    Alkaloids are defined as a group of naturally occurring chemical compounds that mostly contain basic nitrogen atoms [1] Alkaloid molecules are extremely important for biomedical science
  • Analysis of alkaloids (indole alkaloids, isoquinoline alkaloids . . .
    There are three central types of alkaloids: (1) true alkaloids, (2) protoalkaloids, and (3) pseudoalkaloids True alkaloids and protoalkaloids are produced from amino acids, whereas pseudoalkaloids are not derived from these compounds
  • What Is an Alkaloid? Definition, Sources, and Examples
    Alkaloids are naturally occurring compounds with unique properties These organic molecules are primarily found in plants, but also appear in some fungi and animals Alkaloids exhibit diverse effects on living organisms, ranging from beneficial medicinal actions to potent toxicities
  • What Is an Alkaloid? Chemical Structure and Function
    Alkaloids are naturally occurring organic compounds characterized by the presence of nitrogen atoms They are predominantly synthesized by plants, but are also found in some fungi, bacteria, and animals
  • ALKALOID Definition Meaning - Merriam-Webster
    The meaning of ALKALOID is any of numerous usually colorless, complex, and bitter organic bases (such as morphine or caffeine) containing nitrogen and usually oxygen that occur especially in seed plants and are typically physiologically active
  • Alkaloids | Springer Nature Link
    This chapter addresses the complex field of alkaloids, their definition and classification, as well as their significance in nature and industry Despite nearly 50 years of discussion, a uniform definition for alkaloids remains difficult due to their diversity of
  • The role of alkaloids in natural products chemistry
    Alkaloids are a class of naturally occurring organic compounds that are primarily composed of nitrogen atoms, typically within a heterocyclic ring structure
  • Alkaloid - New World Encyclopedia
    Alkaloids are usually derivatives of amino acids, and many have a bitter taste They are found as secondary metabolites in plants (such as potatoes and tomatoes), animals (such as shellfish), and fungi In many cases, they can be purified from crude extracts by acid-base extraction





中文字典-英文字典  2005-2009