Modelling Mango Postharvest Firmness Change at Different Temperatures by using Acoustic Measurements in Combination with Nonlinear Mixed Effects Models
B. De Ketelaere, J. Stulens, J. Lammertyn and J. De Baerdemaeker
Book of Abstract. Information & technology for sustainable fruit & vegetable production, The 7th Fruit, Nut and Vegetable Production Engineering Symposium, 12-16 September 2005, Monpellier, France. Page 98
2005
บทคัดย่อ
Modelling Mango Postharvest Firmness Change at Different Temperatures by using Acoustic Measurements in Combination with Nonlinear Mixed Effects Models
A storage experiment was conducted in Can Tho, Vietnam at different temperatures(12°C, 18°C and room temperature) on 270 mango fruits (Cat Chu species). Mango firmness was assessed repeatedly on each single mango using a commercial firmness sensor. The resulting repeated measures data are characterised by the large biological variance among mangoes and the non-constant variance over storage time. A nonlinear sigmoidal firmness change was assumed. The data were modeled using the concepts of nonlinear mixed effects models. It was found that the sigmoidal firmness change assumption described the data well. Regarding the storage temperatures, it was found that at 12°C, chilling injury was induced, resulting in a significant lower shelf life of the fruits.