Vibration measurements are widely used to assess the firmness of fruits. The test is performed the following way. When a fruit is vibrated, the force generated by the vibration can penetrate the fruit’s surface and generate an oscillation that travels through the flesh. The amplitude and frequency of the oscillation depend on the fruit’s firmness, which can be quantified using various methods.

One commonly used method for measuring fruit firmness is the non-destructive acoustic method. This method involves using a small accelerometer to measure the frequency and amplitude of the vibration generated by tapping the fruit with a small metal rod. The fruit’s firmness is then calculated based on the relationship between its oscillation frequency and stiffness.

Another method is the destructive penetrometer test, which involves pushing a probe into the fruit’s flesh and measuring the force required to penetrate it. This method is more invasive and can damage the fruit but provides a more accurate firmness measurement. Using NextGen’s Fruit Firmness Tester allows growers and distributors to ensure that they deliver products at peak ripeness, enhancing their flavour, texture, and shelf life.

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