Accelerated shelf life test

Determination of the shelf life of food products using the Arrhenius model based on Diniyah et al. (2015) consists of several stages, namely plotting the results of observations at 6 observation points, plotting the quality and time change curve, which produces a linear equation y=ax+b, then determining the order of the reaction based on the equation of the curve value with an R² value and calculations using the Arrhenius. The calculation is done by plotting the pre-exponential curve k (ln k) with the inverse temperature (lnk with 1/T), so that the linear equation is y=a+bx, and then the activation energy is determined from the Arrhenius equation. The last stage is the prediction of shelf life calculated from changes in product quality before and after storage divided by the value of k. The estimated shelf life of an SB can be calculated using the following equations (1 and 2).

Equation of order 0:

Equation of order 1:

where T is the shelf life (days), A0 is the critical value of the initial quality attribute, At is the value of the final storage quality attribute and K is the constant of quality degradation.

Changes in the quality of corn snack bars during 35 days of storage.