RELATIONSHIP BETWEEN SENSORY EVALUATIONS AND NONDESTRUCTIVE OPTICAL MEASUREMENTS OF APPLE QUALITY

A nondestmctive optical method was studied for estimating the sensory quality of Golden Delicious and York Imperial apples. 7he coeficients of determination were signifcant for estimating sweetness of York Imperial, acidity of Golden Delicious and York Imperial, and crispness, hardness, toughness, and juiciness of Gohien Delicious apples using optical measurements. The coeficients of determination were weakest with optical data at a single wavelength, intermediate with optical data compensated for fruit size and drip of instrument current, and strongest with multiple wavelength data. nese analyses indicate that 30 to 50% of the variation in sensory attributes can be accounted for by factors affecting optical density of the fruit at specijc wavelengths.