polysaccharide

[US]/ˌpɒlɪ'sækəraɪd/
[UK]/ˌpɑliˈsækəˌraɪd/
Frequency: Very High

Translation

n.polysaccharide;polymeric carbohydrate

Example Sentences

Polysaccharides are complex carbohydrates made up of multiple sugar units.

Cellulose is a well-known polysaccharide found in the cell walls of plants.

Starch is another example of a polysaccharide commonly found in foods like potatoes and grains.

Glycogen is a polysaccharide that serves as a storage form of glucose in animals.

Chitin, a polysaccharide, is a major component of the exoskeletons of insects and crustaceans.

Polysaccharides play important roles in energy storage and structural support in living organisms.

Some polysaccharides, like pectin, are used in the food industry as gelling agents or thickeners.

Polysaccharides can be broken down into simpler sugars through the process of hydrolysis.

Dietary fibers, which include certain polysaccharides, are important for digestive health.

Polysaccharides are essential macromolecules that play diverse roles in biological systems.

Real-world Examples

Those with more than ten are polysaccharides.

Source: Bilingual Edition of TED-Ed Selected Speeches

First, Klebsiella pneumoniae is encapsulated, which means it's covered by a polysaccharide layer called a capsule.

Source: Osmosis - Microorganisms

Klebsiella has an abundant polysaccharide capsule which leads to the formation of very mucoid and viscous pink colonies.

Source: Osmosis - Microorganisms

Mono- and disaccharides come from fruits, honey, sugar beets and sugar cane, while polysaccharide starches come from veggies and grains.

Source: Crash Course Anatomy and Physiology

See, applesauce is full of a polysaccharide called pectin, which normally holds cell walls together in some plants, including fruits like apples and berries.

Source: Scishow Selected Series

And when you heat up pectin, those polysaccharide molecules start binding to each other and other molecules like water to create a tangled gummy network.

Source: Scishow Selected Series

Finally, children with sickle cell typically get prophylaxis with penicillin and an additional polysaccharide vaccine against Streptococcus pneumoniae to help prevent sepsis and meningitis with encapsulated bacteria.

Source: Osmosis - Blood Cancer

Like xanthan gum, carrageenan is a long, complex polysaccharide and it's curvy helical structure makes it particularly good at binding not only with water, but also with proteins.

Source: Scishow Selected Series

Consider starch and fiber, both polysaccharides, both derived from plants, both composed of hundreds to thousands of monosaccharides joined together, but they're joined together differently, and that changes the effect they have on your body.

Source: TED-Ed (video version)

Insulin helps stimulate the liver to store glucose as glycogen in a process called glycogenesis - which is when some of the glucose molecules get linked together with alpha 1-4 and alpha 1-6 glycosidic bonds to form a polysaccharide called glycogen.

Source: Osmosis - Digestion

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