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xanthin    
n. 黄色色素

黄色色素

Xanthin \Xan"thin\, n. [Gr. xanqo`s yellow.]
1. same as {xanthine}.
[1913 Webster]

2. (Chem.) A yellow insoluble coloring matter extracted from
yellow flowers; specifically, the coloring matter of
madder. [Formerly written also {xanthein}.]
[1913 Webster]

3. (Chem.) One of the gaseous or volatile decomposition
products of the xanthates, and probably identical with
carbon disulphide. [Obs.]
[1913 Webster] Xanthine


Xanthine \Xan"thine\, n. Also Xanthin \Xan"thin\ . [Gr. xanqo`s
yellow.] (Physiol. Chem.)
A type of purine obtainable as a white microcrystalline
powder, {C5H4O2N4}, present in muscle tissue, in the liver,
spleen, pancreas, and other organs, and also in urine (in
small quantities) and some urinary calculi, and in the juices
of certain plants; -- so called because it leaves a yellow
residue when evaporated to dryness with nitric acid. It is
also present in guano. Xanthine is closely related to uric
acid.
[Webster 1913 Suppl.]


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  • Xanthine - Wikipedia
    Xanthine ( ˈzænθiːn or ˈzænθaɪn , from Ancient Greek ξανθός xanthós 'yellow' for its yellowish-white appearance; archaically xanthic acid; systematic name 3,7-dihydropurine-2,6-dione) is a purine base found in most human body tissues and fluids, as well as in other organisms [2]
  • What Is Zeaxanthin? Benefits and Side Effects - Cleveland Clinic Health . . .
    Thanks to its antioxidant properties, zeaxanthin can help your body in a variety of ways Here are some zeaxanthin benefits Zeaxanthin is closely related to vitamin A and is naturally located in your eye’s macula and retina, along with lutein
  • Zeaxanthin: Uses, Benefits, Side Effects, and Dosage - Verywell Health
    Zeaxanthin is a carotenoid, which acts as an antioxidant—substances that protect the body's cells from damage They are also thought to have cancer-fighting properties This article explains how zeaxanthin works, the benefits it may have for eye health, and how people take its supplement form
  • Health Benefits and Top Food Sources of Zeaxanthin
    Zeaxanthin is a powerful carotenoid that may help keep your eyes and skin healthy It’s also associated with improved brain health and cognition Find this nutrient in dark, leafy greens and
  • XANTHINE Definition Meaning - Merriam-Webster
    The meaning of XANTHINE is a feebly basic compound C5H4N4O2 that occurs especially in animal or plant tissue, is derived from guanine and hypoxanthine, and yields uric acid on oxidation; also : any of various derivatives of xanthine (such as methylxanthine)
  • Xanthine, xanthine derivatives, foods, medications xanthine side effects
    Hereditary xanthinuria is a condition that most often affects the kidneys It is characterized by high levels of a compound called xanthine and very low levels of another compound called uric acid in the blood and urine The excess xanthine can accumulate in the kidneys and other tissues
  • Xanthine Derivatives: Drug Class, Uses, Side Effects, Drug Names - RxList
    Xanthine derivatives are medications used to treat bronchospasm caused by lung conditions such as asthma Xanthine is a naturally occurring compound in the human body and is also found in plant products such as tea, coffee, and cocoa beans Xanthine derivatives are a group of alkaloids that work as mild stimulants and bronchodilators
  • Zeaxanthin - Wikipedia
    Zeaxanthin is one of the most common carotenoids in nature, and is used in the xanthophyll cycle Synthesized in plants and some micro-organisms, it is the pigment that gives paprika (made from bell peppers), corn, saffron, goji (wolfberries), and many other plants and microbes their characteristic color [1][2]
  • Lutein and Zeaxanthin: Benefits, Dosage and Food Sources - Healthline
    Lutein and zeaxanthin are two important carotenoids, which are pigments produced by plants that give fruits and vegetables a yellow or reddish hue Both are also potent antioxidants, offer a range





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