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yeast    音标拼音: [j'ist]
n. 酵母,发酵粉

酵母,发酵粉

yeast
n 1: a commercial leavening agent containing yeast cells; used
to raise the dough in making bread and for fermenting beer
or whiskey [synonym: {yeast}, {barm}]
2: any of various single-celled fungi that reproduce asexually
by budding or division

Yeast \Yeast\, n. [OE. [yogh]eest, [yogh]est, AS. gist; akin to
D. gest, gist, G. gischt, g[aum]scht, OHG. jesan, jerian, to
ferment, G. gischen, g[aum]schen, g[aum]hren, Gr. ? boiled,
zei^n to boil, Skr. yas. [root]111.]
[1913 Webster]
1. The foam, or troth (top yeast), or the sediment (bottom
yeast), of beer or other in fermentation, which contains
the yeast plant or its spores, and under certain
conditions produces fermentation in saccharine or
farinaceous substances; a preparation used for raising
dough for bread or cakes, and making it light and puffy;
barm; ferment.
[1913 Webster]

2. Spume, or foam, of water.
[1913 Webster]

They melt thy yeast of waves, which mar
Alike the Armada's pride, or spoils of Trafalgar.
--Byron.
[1913 Webster]
[1913 Webster]

{Yeast cake}, a mealy cake impregnated with the live germs of
the yeast plant, and used as a conveniently transportable
substitute for yeast.

{Yeast plant} (Bot.), the vegetable organism, or fungus, of
which beer yeast consists. The yeast plant is composed of
simple cells, or granules, about one three-thousandth of
an inch in diameter, often united into filaments which
reproduce by budding, and under certain circumstances by
the formation of spores. The name is extended to other
ferments of the same genus. See {Saccharomyces}.

{Yeast powder}, a baling powder, -- used instead of yeast in
leavening bread.
[1913 Webster]



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  • Yeast | Definition Uses | Britannica
    Yeast, any of about 1,500 species of single-celled fungi, several of which are of economic importance or are pathogenic Yeasts are found worldwide in soils and on plant surfaces and are especially abundant in sugary mediums, such as flower nectar and fruits
  • What is Yeast? All you need to know about yeast - Explore Yeast
    Yeast is a living microorganism naturally present in the environment and in our gut Yeast enables natural fermentation that is used for making bread, beer, and other fermented food Nutritional yeast is a good source of proteins, minerals, and vitamins Yeast extracts can be used in the food and beverage industry to improve the taste of dishes
  • Science of Yeast: How Yeast Is Made and Works - Red Star® Yeast
    Yeast is a single-celled living organism with a mighty big job in baking Yeast cells are so small that one (0 25-ounce) packet of dry yeast contains billions of healthy yeast cells! Yeast cells digest food to obtain energy for growth
  • What Is Yeast? - Food Network
    Yeast is a single-celled living organism that transforms sugar and starch into carbon dioxide and alcohol through fermentation Yeast is essential to baking bread and making beer and wine
  • What Is Yeast? - The Spruce Eats
    Yeast is a leavening agent used for baking that requires sugar, starch, warmth, and moisture to produce carbon dioxide Here is our guide to buying and baking with Yeast
  • Yeast: Structure, Reproduction, and Uses • Microbe Online
    Yeast is a unicellular eukaryotic cell It is a saprophytic fungus and is found in sugary mediums like the juice of sugarcane and sweet fruits, the nectar of flowers, etc Yeast is larger than most bacteria It is non-motile and does not consist of flagella or any other organ of locomotion
  • 10 Types Of Yeast And How To Use Them - The Daily Meal
    There are numerous types of yeast, and each one has its own unique properties Here's 10 that are ideal for baking, brewing, or nutritional supplementation News
  • Yeast – Structure, Reproduction, Life Cycle and Uses
    Yeast, a unicellular eukaryotic organism, belongs to the kingdom Fungi Exhibiting saprophytic characteristics, it thrives in sugar-rich environments such as fruit juices, nectar, and sugary plant secretions Distinctly larger than most bacteria, yeast is non-motile, lacking flagella or other locomotive structures
  • Yeast: Structure, Fermentation, Food, Biotech, and Genetic Engineering
    Explore the multifaceted roles of yeast in food, biotechnology, and genetic engineering, highlighting its structure and fermentation capabilities Yeast, a versatile microorganism, plays a role in various biological and industrial processes
  • What are yeast? - SGD-Wiki
    Yeast are single-celled microorganisms that are classified, along with molds and mushrooms, as members of the Kingdom Fungi Yeasts are evolutionarily diverse and are therefore classified into two separate phyla, Ascomycota or sac fungi and Basidiomycota or higher fungi, that together form the subkingdom Dikarya





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