The following substances put together will produce the counteraction and weakening effect of the sense of taste is ( ).
Add cube sugar to black coffee
B. Add acesulfame to sugar-free coke
C. Add MSG to the chicken broth
D. Sprinkle salt on toasted buns
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Where is the sour taste mainly perceived by the tongue? ( )
A. Tongue root
B. Tongue on both sides
C. Tongue tip
D. Tongue on both sides of the front
Which of following are natural plant pigments?( )
A. Lycopene
B. Chlorophyll
C. Monascin
D. Anthocyanin
The main characteristics of olfactory substances include ( ).
A. Volatile
B. High relative molecular weight
C. Small relative molecular weight
D. Both water-soluble and fat-soluble
The characteristic components of barbecue aroma mainly include ( ).
A. Pyrazines compounds
B. Pyrrole compounds
C. Pyridine compounds
D. Carbonyl compounds such as isovaleraldehyde
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