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alkaloid    音标拼音: ['ælkəl,ɔɪd]
n. 生物碱,植物碱基

生物硷,植物硷基

alkaloid
n 1: natural bases containing nitrogen found in plants

Alkaloid \Al"ka*loid\ ([a^]l"k[.a]*loid), Alkaloidal
\Al`ka*loid"al\ ([a^]l`k[.a]*loid"al), a. [Alkali -oid: cf. F.
alcalo["i]de.]
1. Pertaining to, resembling, or containing, alkali.
[1913 Webster]

2. of or pertaining to alkaloids.
[WordNet 1.5]


Alkaloid \Al"ka*loid\ ([a^]l"k[.a]*loid), n. (Chem.)
An organic base, especially one of a class of
nitrogen-containing substances occurring ready formed in the
tissues of plants and the bodies of animals.
[1913 Webster]

Note: Alkaloids all contain nitrogen, carbon, and hydrogen,
and many of them also contain oxygen. They include many
of the active principles in plants; thus, morphine and
narcotine are alkaloids found in opium.
[1913 Webster]


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  • Alkaloid - Wikipedia
    Such alkaloid-related substances as serotonin, dopamine and histamine are important neurotransmitters in animals Alkaloids are also known to regulate plant growth [202] One example of an organism that uses alkaloids for protection is the Utetheisa ornatrix, more commonly known as the ornate moth
  • 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
  • Alkaloids in Future Drug Discovery - PMC
    Alkaloids are nitrogen-containing compounds, biosynthesized by both marine and terrestrial organisms, often with strong biological properties They are among the largest classes of natural products and are found particularly in plants The term alkaloid is related to their basic properties (alkali-like), due to the presence of one or more nitrogen atoms, as primary, secondary, or tertiary
  • What Is an Alkaloid? Definition, Sources, and Examples
    Explore alkaloids: naturally occurring compounds with diverse biological effects, from their definition and sources to everyday examples
  • What Is an Alkaloid? Chemical Structure and Function
    The term “alkaloid,” meaning “alkali-like,” reflects this chemical behavior Most true alkaloids are biosynthetically derived from amino acids, the building blocks of proteins These precursor amino acids, such as tyrosine or tryptophan, provide the carbon skeleton and the essential nitrogen atom for the final alkaloid structure
  • Alkaloid - New World Encyclopedia
    Alkaloid classifications Alkaloids are usually classified by their common molecular feat, based on the metabolic pathway used to construct the molecule When not much was known about the biosynthesis of alkaloids, they were grouped under the names of known compounds, even some non-nitrogenous ones (since those molecules' structures appear in the finished product; the opium alkaloids are
  • 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
  • Alkaloid - ScienceDaily
    An alkaloid is a nitrogenous organic molecule that has a pharmacological effect on humans and animals The name derives from the word alkaline; originally, the term was used to describe any
  • Alkaloids | Definition, Examples Structure - Study. com
    Understand the meaning of plant alkaloids Discover the structure of alkaloids, see some examples, and learn the various uses of alkaloids





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