The ‘Hass’ avocado had been tested by DMA to study the stress relaxation
properties under different storage temperatures. The Maxwell model and kinetics
model were also used to build the shelf life prediction model. The results
showed that there were no significant changes of stress relaxation property in
7 days when stored under 5℃, while it softened quickly after 5 days at 8℃. The
stress relaxation properties changed significantly in 3 days at 25℃. The shelf
life prediction models had been built by extracting the equilibrium modulus of
elasticity(E0), the main relaxation time(τ1) and
the viscous
coefficient(η) of samples, respectively. Among them, the model based on the
main relaxation time,with the relative prediction error of 8.57%, could predict
the shelf life more accurately than the others. This conclusion is expected to
be potential applications for shelf life prediction of ‘Hass’ avocado during
the cold chain transportation and storage.
NIU Yi-qing et al
. Research on stress
relaxation properties and shelf life prediction of ‘Hass’ Avocado[J]. Food and Fermentation Industries, 2017
, 43(11)
: 75
.
DOI: 10.13995/j.cnki.11-1802/ts.014160