The good taste of peptides

Area of Science:

• Biochemistry
• Food Science
• Sensory Science

Background:

• Peptides, crucial for biological functions, also exhibit taste properties.
• Taste perception encompasses sweet, bitter, umami, sour, and salty modalities.
• Sour and salty tastes in peptides stem from terminal charges, not specific molecular features.

Purpose of the Study:

• To review peptides associated with sweet, bitter, and umami tastes.
• To explore the connection between peptide taste and food acceptance/rejection.
• To emphasize the significance of sweet taste peptides, including aspartame and sweet proteins.

Main Methods:

• Literature review of scientific publications on peptide taste.
• Analysis of peptide structures and their correlation with taste perception.
• Discussion of the role of specific peptides in food preference.

Main Results:

• Peptides represent sweet, bitter, and umami taste modalities.
• Sweet taste is linked to specific peptide structures, exemplified by aspartame and sweet proteins.
• Bitter and umami tastes are also associated with distinct peptide families.

Conclusions:

• Peptide taste is a significant factor in food acceptance and rejection.
• Sweet taste peptides, particularly sweet proteins, hold considerable scientific and practical importance.
• Understanding peptide taste contributes to food science and sensory analysis.