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Starch

Definition

noun, plural: starches

A polysaccharide carbohydrate (C6H10O5)n consisting of a large number of glucose monosaccharide units joined together by glycosidic bonds found especially in seeds, bulbs, and tubers.


Supplement

All plant seeds and tubers contain starch which is predominantly present as amylose and amylopectin. Plants use starch as a way to store excess glucose, and thus also use starch as food during mitochondrial oxidative phosphorylation. Animals do not store excess glucose as starch; they store them as glycogen.

Starch has many commercial uses, such as in papermaking, as a food, in the production of commercial grape sugar, for stiffening linen in laundries, in making paste, in printing industry, in hydrogen production, etc.


Word origin: Old English stearc (“stark, strong, rough”).

Related terms: animal starch, starch gum.

Compare: glycogen.
See also: carbohydrate.


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sugar consumption and weight gain

... Sugar converted into glucose and fructose by digestive system and they enter into the glycolysis same as in the case of other carbohydrates(eg. starch). Why diabetes people avoiding table sugar? Eating table sugar is same as eating starchy food, they all have common end (will enter into glycolysis ...

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by josem
Thu Sep 04, 2014 9:14 pm
 
Forum: Physiology
Topic: sugar consumption and weight gain
Replies: 1
Views: 106

URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!

... – NEGATIVE, MANNITOL – NEGATIVE, DULCITOL – NEGATIVE (A) ACID PRODUCTION MEDIUM YELLOW BUT NO GAS IN DURHAM TUBE – SUCROSE, LACTOSE, MALTOSE. STARCH HYDROLYSIS – NEGATIVE CITRATE UTLISISATION – NEGATIVE INDOLE PRODUCTION – NEGATIVE HYDROGEN SULPHIDE PRODUCTION – NEGATIVE METHYL RED TEST – ...

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by microbiologyhelp
Wed Nov 20, 2013 6:09 pm
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 5643

Anabolic reaction of polymers

You use glucose phosphate to make starch, that's what you need energy for.

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by JackBean
Tue Oct 15, 2013 10:13 am
 
Forum: General Discussion
Topic: Anabolic reaction of polymers
Replies: 1
Views: 896

Anabolic reaction of polymers

For example if we give energy to some glucose it realeses starch .but we will do bond, but we use energy. dont we use enery to break up bonds? or we use this energy to break up the hdyrogen bonds between glucoses themselves?then how energy affect glucose ...

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by Perotin
Tue Oct 15, 2013 10:08 am
 
Forum: General Discussion
Topic: Anabolic reaction of polymers
Replies: 1
Views: 896

Practical Examination (AS)

... how fast oxygen is given off. Or measuring the disappearance of a substrate rather than the appearance of a product (basiccly just using a starch solution with the enzyme amylase and pipetting it into a tray with potasium iodide and idone and timing how long it takes for the starch to vanish). ...

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by marineman
Tue Apr 16, 2013 12:49 pm
 
Forum: General Discussion
Topic: Practical Examination (AS)
Replies: 4
Views: 6051
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