Fluctuations in phenolic content, ascorbic acid and total carotenoids and antioxidant activity of fruit beverages during storage

• Published in: Heliyon 2016-09, Vol.2 (9), p.e00152-e00152, Article e00152
• Main Authors: Castro-López, C., Sánchez-Alejo, E.J., Saucedo-Pompa, S., Rojas, R., Aranda-Ruiz, J., Martínez-Avila, G.C.G.
• Format: Article
• Language: English
• Subjects: Food Science
• ISSN: 2405-8440; 2405-8440
• DOI: 10.1016/j.heliyon.2016.e00152

Stability of the total phenolic content, ascorbic acid, total carotenoids and antioxidant activity in eight fruit beverages was analyzed. The influence of storage temperature (4, 8 and 11 °C) during the product shelf-life (20 days) was evaluated. Pomegranate Juice presented the highest values for antioxidant activity by DPPH assay (552.93 ± 6.00 GAE μg mL−1), total carotenoids (3.18 ± 0.11 βCE μg mL−1), and total phenolic content (3967.07 ± 2.47 GAE μg mL−1); while Splash Blend recorded the highest levels of ascorbic acid (607.39 ± 2.13 AAE μg mL−1). The antioxidant capacity was stable at 4 and 8 °C for the first 8 days of storage; while carotenoids and ascorbic acid were slightly degraded through the storage time, possibly due to oxidation and/or reactions with other compounds. The results suggest that the observed variation during testing could be related to storage conditions of the final product.