Dictionary » A » Amylase




An enzyme in the saliva and pancreatic juice that catalyzes the hydrolysis (breaking down) of starch, glycogen and related polysaccharides into more simple and readily usable forms of sugar. It cleaves the α (1-4) glycosidic linkages.


The amylase is produced and secreted by salivary glands and pancreas to aid in the chemical digestion of foodstuff (such as starch).

Amylase is also present in other organisms such as molds, bacteria, yeasts and plants. In plants, the amylase can be found in seeds to break down starch into sugar to be used by the embryo to induce growth.

The types of amylases:

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Help with unknown

... + Oxidase/Kovac's - EMB plate showed a maroonish color Mannitol and gas + Glucose and gas + Lactose - Phenylalanine - Nitrate to nitrite + Amylase - Protease for casein (Unsure) Gelatin - Urea - Thanks in advance!!

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by kayleighat
Sun Oct 20, 2013 2:43 am
Forum: Microbiology
Topic: Help with unknown
Replies: 0
Views: 3925

Practical Examination (AS)

... 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). i cant stress how easy the ...

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by marineman
Tue Apr 16, 2013 12:49 pm
Forum: General Discussion
Topic: Practical Examination (AS)
Replies: 4
Views: 8310

identifying 2 unknown bacterias

I have a gram negative, rod positive capsule present negative amylase reaction acidic, curd formation, peptonization in the protease reaction positive catalase reaction negative H2S reaction negative motility positive indole reaction positive nitrate reduction ...

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by jl930
Wed Jul 18, 2012 4:57 am
Forum: Microbiology
Topic: identifying 2 unknown bacterias
Replies: 1
Views: 3833

Unknown Organism

... 8. Voges-Proskauer Acetoin is not produced 9. Oxidase Cytochrome c Oxidase is present 10. Catalase Catalase is present 11. Starch Hydrolysis *No amylase is present* 12. Citrate Citrate is utilized 13. Phenylalanine Phenylalanine deaminase is present* 14. SIM Medium Sulfur is not reduced, Tryptophan ...

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by CheriPeace
Fri Jun 29, 2012 9:08 pm
Forum: Microbiology
Topic: Unknown Organism
Replies: 5
Views: 5976

Help with unkown

... milk and lactose test mannitol + maltose - sucrose - Methyl Red + Vouges - Proskauer Test - Catalase + Oxidase - nitrate + starch hydrolysis - no amylase casein hydrolysis - Lipase + tryptophanase + urea - cysteine desulfurase hydrogen sulfide production. Citrate - phenylalanase - litmus milk ...

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by bruserboy1
Thu Apr 05, 2012 3:48 pm
Forum: Microbiology
Topic: Help with unkown
Replies: 0
Views: 1546
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