Association between fresh garlic composition and black garlic antioxidant capacity

Area of Science:

• Food Science
• Nutritional Biochemistry
• Agricultural Science

Background:

• Black garlic (BG) is a functional food with potent antioxidant activity (AOA).
• The impact of fresh garlic (FG) composition on BG's AOA remains largely unexplored.
• Understanding this relationship is key to optimizing BG's health benefits.

Purpose of the Study:

• To investigate how different FG cultivars influence BG's composition and AOA.
• To identify specific compounds in BG that correlate with its antioxidant properties.
• To determine if FG composition can predict the AOA of the resulting BG.

Main Methods:

• Seven distinct FG cultivars were used to produce BG.
• Analysis included basic composition, metabolomic profiling, and antioxidant activity assays.
• Correlation studies were performed to link FG composition markers with BG AOA.

Main Results:

• Cultivar and aging significantly altered BG composition and AOA markers.
• Fructosyl-arginine showed a strong positive correlation with BG's AOA (r=0.8, p<0.05).
• FG crude protein content correlated positively with fructosyl-arginine in BG (r=0.79, p<0.05).

Conclusions:

• FG crude protein content can serve as a practical predictor for BG's AOA.
• This finding aids in tailoring BG production for enhanced biological potential.
• Further research can optimize FG selection for superior functional food properties.