Oral carbohydrate sensing: Beyond sweet taste

Area of Science:

• Nutrition Science
• Sensory Science
• Biochemistry

Background:

• Carbohydrates are classified as mono-/disaccharides (sugars), oligosaccharides, and polysaccharides.
• Dietary carbohydrates are present in various food forms.
• Human gustatory responses to carbohydrates have primarily focused on sugars, eliciting a sweet taste.

Purpose of the Study:

• To review recent knowledge on carbohydrate gustatory sensing beyond the T1R2/T1R3 sweet receptor.
• To explore potential additional gustatory pathways for carbohydrate detection.
• To discuss sensory perception and transduction mechanisms for starch hydrolysis products.

Main Methods:

• Literature review of scientific research on carbohydrate sensing.
• Analysis of carbohydrate chemistry and classification.
• Examination of oral digestion processes and relevant enzymes.
• Discussion of sensory perception and signal transduction.

Main Results:

• Research on carbohydrate taste perception is largely limited to sugars.
• Potential alternative gustatory pathways for carbohydrate sensing exist.
• Starch hydrolysis products may engage distinct sensory mechanisms.

Conclusions:

• The human gustatory system may possess mechanisms for sensing carbohydrates beyond sweetness.
• Further research is needed to elucidate these alternative pathways.
• Understanding these pathways can enhance our knowledge of dietary carbohydrate perception.