Open AccessACOUSTIC IMPULSE RESPONSE FOR MEASURING THE FIRMNESS OF MANDARIN DURING STORAGE
Author(s) -
WANG JUN,
GÓMEZ ANTIHUS HERNÁNDEZ,
PEREIRA ANNIA GARCIA
Publication year - 2006
Publication title -
journal of food quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.568
H-Index - 43
eISSN - 1745-4557
pISSN - 0146-9428
DOI - 10.1111/j.1745-4557.2006.00081.x
Subject(s) - mandarin chinese , impulse (physics) , impulse response , correlation coefficient , acoustics , stiffness , compression test , elasticity (physics) , chemistry , mathematics , materials science , compression (physics) , composite material , physics , statistics , mathematical analysis , philosophy , linguistics , quantum mechanics
The objective of this research was to evaluate the ability of acoustic impulse response for monitoring the mandarin firmness change during storage. The dominant resonant frequency, stiffness coefficient (SC) and elasticity coefficient (EC) decrease with storage time. A good correlation was established between the acoustic parameters (SC and EC) and fruit compression force, and the correlation coefficients were 0.88 and 0.92, respectively. Acoustic impulse response gives a good indication of firmness change for mandarin during storage. The change of EC was more prominent (greatest), and hence it can be a better index of mandarin firmness. The nondestructive acoustic test might replace conventional destructive test for mandarin to determine fruit firmness and expected shelf life.