TY - JOUR
T1 - Bioactive compounds in ready-to-eat rocket leaves as affected by oxygen partial pressure and storage time
T2 - a kinetic modelling
AU - Pereira, M. J.
AU - Amaro, A. L.
AU - Oliveira, A.
AU - Pintado, M.
N1 - Funding Information:
The research leading to these results has received funding from the European Union Seventh Framework Programme (QUAFETY Project FP7/2007/2013) under grant agreement nº 289719 . The authors acknowledge the research grants of Maria João Pereira (FP7/KBBE 2011.2.4-01/289719/2012) and Ana Amaro (FP7/KBBE 2011.2.4-01/289719/2012). This work was also supported by FCT - Fundação para a Ciência e a Tecnologia through project UID/Multi/50016/2013.
Funding Information:
The research leading to these results has received funding from the European Union Seventh Framework Programme (QUAFETY Project FP7/2007/2013) under grant agreement n? 289719. The authors acknowledge the research grants of Maria Jo?o Pereira(FP7/KBBE 2011.2.4-01/289719/2012) and Ana Amaro(FP7/KBBE 2011.2.4-01/289719/2012). This work was also supported by FCT - Funda??o para a Ci?ncia e a Tecnologia through project UID/Multi/50016/2013.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/12
Y1 - 2019/12
N2 - Storage techniques, such as low temperature and modified atmosphere packaging, are efficient in keeping visual quality of ready-to-eat (RTE) products such as processed leafy vegetables throughout the supply chain, but studies on appearance often neglect the effect of different storage conditions on their nutritional properties. The effects of initial O2 partial pressure (20, 10, 5 and 2.5 kPa O2) in packages and storage time (14 d) on RTE rocket leaves on the bioactive compounds, phenolics, ascorbic acid, and antioxidant activity were determined. Kinetic models were applied to allow the assessment and prediction of the influence of initial partial pressure on nutritional composition. The results show that lowering package initial O2 partial pressure from 20 kPa to 5–10 kPa reduced the respiration rate by 53 and 38%, respectively. However, antioxidant activity and ascorbic acid content showed most effects with an initial O2 of 5 kPa. The kinetic parameters are relevant to help predict phytochemical changes during storage under different package O2 partial pressures. To obtain an overall quality, the application of intermediate atmospheres would be beneficial.
AB - Storage techniques, such as low temperature and modified atmosphere packaging, are efficient in keeping visual quality of ready-to-eat (RTE) products such as processed leafy vegetables throughout the supply chain, but studies on appearance often neglect the effect of different storage conditions on their nutritional properties. The effects of initial O2 partial pressure (20, 10, 5 and 2.5 kPa O2) in packages and storage time (14 d) on RTE rocket leaves on the bioactive compounds, phenolics, ascorbic acid, and antioxidant activity were determined. Kinetic models were applied to allow the assessment and prediction of the influence of initial partial pressure on nutritional composition. The results show that lowering package initial O2 partial pressure from 20 kPa to 5–10 kPa reduced the respiration rate by 53 and 38%, respectively. However, antioxidant activity and ascorbic acid content showed most effects with an initial O2 of 5 kPa. The kinetic parameters are relevant to help predict phytochemical changes during storage under different package O2 partial pressures. To obtain an overall quality, the application of intermediate atmospheres would be beneficial.
KW - Antioxidant activity
KW - Diplotaxis tenuifolia
KW - Kinetics
KW - Modified atmosphere packaging
KW - Phenolic compounds
UR - http://www.scopus.com/inward/record.url?scp=85071553351&partnerID=8YFLogxK
U2 - 10.1016/j.postharvbio.2019.110985
DO - 10.1016/j.postharvbio.2019.110985
M3 - Article
AN - SCOPUS:85071553351
SN - 0925-5214
VL - 158
SP - 1
EP - 6
JO - Postharvest Biology and Technology
JF - Postharvest Biology and Technology
M1 - 110985
ER -