Effect of temperature, oxygen and light on the degradation of β-carotene, lutein and α-tocopherol in spray-dried spinach juice powder during storage

Syamila, M.; Gedi, M.A.; Briars, R.; Ayed, C.; Gray, D.A.

Abstract

© 2019 The aim of this study was to evaluate the interaction between packaging parameters (transmission of light and oxygen) and storage temperatures (4, 20, 40 °C) on nutrient retention of Spinach (Spinacia oleracea) juice, spray-dried in the absence of an added encapsulant. β-Carotene was more susceptible to degradation compared with lutein and α-tocopherol. Under our experimental conditions, it was observed that excluding low fluorescent light intensity and air by vacuum packaging at 20 °C did not seem to improve nutrient retention loss over time (p > 0.05). The rate of β-carotene, lutein and α-tocopherol loss displayed first order reaction kinetic with low activation energy of 0.665, 2.650 and 13.893 kJ/mol for vacuum, and 1.089, 4.923 and 14.142 kJ/mol for non-vacuum, respectively. The reaction kinetics and half-life for β-carotene, lutein and α-tocopherol at 4 °C and non-vacuumed were 2.2 × 10 −2 , 1.2 × 10 −2 , and 0.8 × 10 −2 day −1 , and 32.08, 58.25 and 85.37 day, respectively.

Citation

Syamila, M., Gedi, M., Briars, R., Ayed, C., & Gray, D. (2019). Effect of temperature, oxygen and light on the degradation of β-carotene, lutein and α-tocopherol in spray-dried spinach juice powder during storage. Food Chemistry, 284, 188-197. https://doi.org/10.1016/j.foodchem.2019.01.055

• Journal Article Type: Article
• Acceptance Date: Jan 12, 2019
• Online Publication Date: Jan 17, 2019
• Publication Date: Jun 30, 2019
• Deposit Date: Jan 29, 2019
• Publicly Available Date: Jan 29, 2019
• Journal: Food Chemistry
• Print ISSN: 0308-8146
• Electronic ISSN: 1873-7072
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 284
• Pages: 188-197
• DOI: https://doi.org/10.1016/j.foodchem.2019.01.055
• Keywords: Food Science; Analytical Chemistry; General Medicine
• Public URL: https://nottingham-repository.worktribe.com/output/1503537
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0308814619301232?via%3Dihub
• Contract Date: Jan 29, 2019