ECONOMIC IMPORTANCE OF YEAST

What is yeast?Structure of yeastUses of the yeast

Yeasts are eukaryotic micro-

organisms classified in the

kingdom Fungi, with 1,500

species currently described

estimated to be only 1% of

all fungal species.

What is Yeast?

What is yeast?

STRACTURE OF YEAST

Yeast include some of

the most widely use

model organisms for

genetics and cell biology.

USES OF YEAST

Alcoholic beverages are

defined as beverages that

contain ethanol (C2H5OH).

USES OF YEAST- Alcoholic beverages

Brewing yeasts may be

classed as "top

cropping" (or "top

fermenting") and

"bottom cropping" (or

"bottom-fermenting").

USES OF YEAST-Beer

Yeast is used in

winemaking, where it

converts the sugars

present in grape juice

(must) into ethanol.

USES OF YEAST-Wine

Yeast, most commonly S.

cerevisiae, is used in baking

as a leavening agent, where

it converts the fermentable

sugars present in dough into

the gas carbon dioxide.

USES OF YEAST-Baking

Some yeasts can find potential

application in the field of

bioremediation.

USES OF YEAST- Bioremediation

The ability of yeast to

convert sugar into ethanol

has been harnessed by

the biotechnology

industry to produce

ethanol fuel.

USES OF YEAST- Industrial ethanol production(Bioethanol)

Root beer and other sweet carbonated beverages can be produced using the same methods as beer, except the fermentation is stopped sooner, producing carbon dioxide, but only trace amounts of alcohol, and a significant amount of sugar is left in the drink.

USES OF YEAST- Nonalcoholic beverages

Yeast is used in nutritional supplements popular with vegans and the health conscious, where it is often referred to as "nutritional yeast".

USES OF YEAST- Nutritional supplements

Some probiotic supplements use

the yeast S. boulardii to maintain

and restore the natural flora in

the gastrointestinal tract.

USES OF YEAST-PROBIOTIC

Yeast is often used by aquarium hobbyists to generate carbon dioxide (CO2) to nourish plants in planted aquariums.

USES OF YEAST- Aquarium hobby

http://en.wikipedia.org/wiki/Yeast http://www.ncbi.nlm.nih.gov/pmc/articles

/PMC553262/ http://www.yeastgenome.org/VL-what_are_

yeast.shtml

MY RESOURCES

NESLINUR YILDIZ 9/D 227