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Arrhenius equation modeling for the shelf life prediction of tomato paste containing a natural preservative
Author(s) -
Jafari Seid Mahdi,
Ganje Mohammad,
Dehnad Danial,
Ghanbari Vahid,
Hajitabar Javad
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8404
Subject(s) - shelf life , preservative , sodium benzoate , control sample , food science , chemistry , arrhenius equation , food preservation , horticulture , botany , activation energy , biology , organic chemistry
BACKGROUND The shelf life of tomato paste with microencapsulated olive leaf extract was compared with that of samples containing a commercial preservative by accelerated shelf life testing. Based on previous studies showing that olive leaf extract as a rich source of phenolic compounds can have antimicrobial properties, application of its encapsulated form to improve the storage stability of tomato paste is proposed here. RESULTS Regarding total soluble solids, the control and the sample containing 1000 µg g −1 sodium benzoate had the lowest ( Q 10 = 1.63) and highest ( Q 10 = 1.88) sensitivity to temperature changes respectively; also, the microencapsulated sample containing 1000 µg g −1 encapsulated olive leaf extract ( Q 10 = 1.83) followed the sample containing 1000 µg g −1 sodium benzoate in terms of the highest kinetic rates. In the case of consistency, the lowest and highest activation energies ( E a ) corresponded to samples containing 1000 µg g −1 non‐encapsulated olive leaf extract and 1000 µg g −1 microencapsulated olive leaf extract respectively. CONCLUSION Interestingly, samples containing microencapsulated olive leaf extract could maintain the original quality of the tomato paste very well, while those with non‐encapsulated olive leaf extract rated the worst performance (among all specimens) in terms of maintaining their quality indices for a long time period. Overall, the shelf life equation was able to predict the consistency index of all tomato paste samples during long‐time storage with high precision. © 2017 Society of Chemical Industry