Results (
Thai) 1:
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3.3. Sensory analysis
The uncoated bananas showed unsatisfactory appearance after four days of storage, whereas the coated bananas
still demonstrated an acceptable appearance up to seven day storage. For this reason, as the sensory tests were
onducted on the seventh day of storage, the uncoated banana as control was not included in the evaluation of
ensory tests. The sensory tests would be mainly comparing the chitosan coated bananas to one another.
Based on this sensory test, the limit of acceptability is set at ฑ3.5. Color and aroma were desirable when chitosan
concentration in the coating solution ranged from 1.5 to 2% regardless DD of chitosan indicated by the low
umerical scale. In contrast, the coating contained the lowest concentration of chitosan of 1% led to the desirable
texture. The addition of TEA emulsifier did not affect the color and aroma acceptance but did significantly affect the
texture acceptance though no constant tendency was observed.
All sensory parameters (color, aroma, and texture) were taken into account to evaluate the most organoleptically
accepted coated samples. In overall, the C3* sample was the most desirable even though the texture was on the
acceptance limit.
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