Bioactive amines in Passiflora are affected by species and fruit development

Area of Science:

• Agricultural Science
• Food Science
• Biochemistry

Background:

• Bioactive amines are crucial compounds found in fruits, influencing their nutritional value and potential health benefits.
• Understanding the profile and concentration of these amines in different passion fruit (Passiflora) species is essential for quality assessment and utilization.

Purpose of the Study:

• To quantify and compare the concentrations of key bioactive amines (spermine, spermidine, agmatine, putrescine, tryptamine) in four selected Passiflora species.
• To investigate the changes in amine concentrations and physicochemical properties (pH, soluble solids) throughout the development of P. setacea fruit.
• To explore the relationship between species-specific amine profiles, fruit development, and potential health-promoting properties.

Main Methods:

• Selected passion fruit species were analyzed for bioactive amine content over two growing seasons.
• High-Performance Liquid Chromatography (HPLC) was likely used for amine quantification.
• Physicochemical parameters including pH and soluble solids (°Brix) were measured.
• Changes in amine concentrations and pH were monitored during the development of P. setacea fruit.

Main Results:

• All four Passiflora species contained spermine, spermidine, agmatine, putrescine, and tryptamine, with varying concentrations.
• P. alata exhibited the highest levels of polyamines (spermine+spermidine), while P. setacea and P. nitida were rich in putrescine. P. setacea also showed higher agmatine content.
• Tryptamine was found in low concentrations across all species. P. nitida and P. alata had the highest soluble solids, whereas P. edulis had the lowest pH and P. nitida the highest.
• During P. setacea fruit development, spermidine, putrescine, and agmatine concentrations decreased, spermine remained stable, and pH declined.

Conclusions:

• Species-specific differences in bioactive amine profiles significantly influence the characteristics of passion fruit.
• The dynamic changes in amines and pH during fruit development suggest a role in modulating fruit shelf life and health benefits.
• Understanding these variations can guide breeding programs and optimize the use of passion fruit for specific applications.