Taste Sensations - Spice sensations

14 important questions on Taste Sensations - Spice sensations

How can you determine how hot a pepper is?

By a heat scale, you make a dilution assay. At what moment can you not tast the pepper anymore is the question.

What molecule do you need to change in order to make the capsaicin not spicy anymore?

The N (amide bond) is changed to a ester bond. The ester bond is less stabel and during heating it will probably fall off. When this happens you have a smaller compound that is not spicy anymore

How doe you refere to these components?

Piperamides
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How can you analyse if a pepper is form a different plant?

Trough HPLC. The peaks will be different. You can also see that the difference in processing does not influance the peperamide composition

What kind of a molecule is this?

This is a glucosinolate. They are sulfur rich! You can find them in mustard.

What is special about the pungency of glucosinolate?

A enzyme is involved to make them. This enzyme is called myrosinase. Glucosinolate is not pungent by itself but because of the enzyme it becomes pungent.

Welk product is het belangrijken spice product?

Dat is isothiocyanate.

What is the simularity between mosterd and garlic compounds?

Bouth need a enzyme to make it pungent

What enzyme is involved in the reaction with garlic?

alliinase

What is the most reactive molecule and in what products can you find these compounds?

Garlic onion
allysulfenic acid is very reactive!

What is formed in this picture and in what product can you often find this product

Zwiebelane is formed. Compound that is found in onion

What does this picture tell you about the factor of crying from onoin and how could you prevent the crying?

You need allinase, isoallinas and LF syntase together in order to make you cry. In order top prevent crying you could inhibid dthe allines or LF syntase enymes.

Which is the molecule that makes you cry?

Lachrymatory factor molecule

What is the disadvantage of inhibiting allinase?

You also dont have the flavour compounds formed

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