Vol. 8 (4) : July-August 2017 issue
Green Farming Vol. 8 (4) : 986-990 ; July-August, 2017
Non-destructive method to determine the firmness of sapota based on acoustic resonance technique
P. KARTHICKUMARa1*, V.R. SINIJAb2 and K. ALAGUSUNDARAMa3
aCollege of Fisheries Engineering, Tamil Nadu Fisheries University, Nagapattinam - 611 001 (Tamil Nadu)
bIndian Institute of Crop Processing Technology, Pudukkottai Road, Thanjavur - 613 005 (Tamil Nadu)
cDivision of Agricultural Engineering, Krishi Anusandhan Bhawan - II, New Delhi - 110 012
Designation : 1Assistant Professor *(agrikarthi@gmail.com), 2Associate Professor, 3Deputy Director Genral (Agricl. Engg)
Subject : Food Science, Preservation & Processing, Protectants & Infestation and Post-harvest Technology
Paper No. : P-6420
Total Pages : 5
Received : 02 January 2017
Revised accepted : 09 May 2017
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Citation :
P. KARTHICKUMAR, V.R. SINIJA and K. ALAGUSUNDARAM. 2017. Non-destructive method to determine the firmness of sapota based on acoustic resonance technique. Green Farming Vol. 8 (4) : 986-990 ; July-August, 2017
ABSTRACT
A non-destructive technique based on acoustic resonance, to determine the maturity stage of sapota was developed. The study was conducted on two sapota varieties ('Cricket Ball' and 'Pala') at three maturity stages (mature green, semi-ripe and ripe). Non-destructive (stiffness coefficient) and destructive (firmness, total soluble solids and titratable acidity) parameters were measured for all maturity stages. Non-linear regression models were developed between stiffness coefficient and individual destructive parameters; amongst which total soluble solids values showed best results (r2 = 0.90 for 'Cricket Ball' variety and r2 = 0.96 for 'Pala' variety). The overall classification efficiency of the sorting technique was found to be 89 % for 'Cricket Ball' and 91 % for 'Pala' varieties.
Key words :
Acoustic resonance technique, Maturity, Non-destructive, Sapota, Stiffness coefficient.
