Evaluation and modeling of changes in shelf life, firmness and color of 'Hass' avocado depending on storage temperature

被引:27
|
作者
Sierra, Neidy M. [1 ]
Londono, Alexandra [1 ]
Gomez, Jose M. [2 ]
Herrera, Anibal O. [2 ]
Castellanos, Diego A. [1 ,2 ]
机构
[1] Fdn Univ Agr Colombia, Programa Ingn Alimentos, Bogota, Colombia
[2] Univ Nacl Colombia, Fac Ciencias Agr, Post Harvest Lab, Bogota, Colombia
关键词
Predictive model; shelf life time; senescence; color; firmness; MODIFIED ATMOSPHERES; QUALITY CHANGE; FEIJOA FRUITS; KINETICS; POSTHARVEST; HARVEST; TIME;
D O I
10.1177/1082013219826825
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this study, 'Hass' avocado samples were stored at different temperatures to determine changes in firmness, color and other physicochemical support properties throughout the storage time and to represent shelf life depending on temperature from the evolution of these quality properties. From the experimental data, a set of models were adjusted to represent the change of each property as a function of time and temperature by using a first-order kinetics to represent the evolution of lightness (L*) and the chromatic coordinate b*, and a logistic equation to represent firmness and a*. The effect of temperature was represented by using Arrhenius equations. From the models of firmness and color, suitable equations were obtained to predict shelf life considering the relationship with the senescence stage (between 20 and 33 days). All the models were adjusted satisfactorily, obtaining regression coefficients higher than 0.95. In order to determine the predictive capacity of the proposed models, a validation experiment was carried out by storing fruits at 12 celcius until reaching the senescence stage. With the models, it was possible to satisfactorily predict the changes in color and firmness and it was possible to estimate the shelf life time at 12 celcius (28 +/- 3.1 days).
引用
收藏
页码:370 / 384
页数:15
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