J.of Soc of Agri Struc, Japan.
Vol.28,No.4 March 1998, 217-224
Original:
Language: Japanese

Effects of Vibration and Storage Temperatures on Quality of Japanese Pears

Jiao Yan Liu, Takayuki Kojima, Munehiro Tanaka and Izumi Tatara

ABSTRACT

    Japanese pear ( Pyrus serotina var. culta 'Housui' ) grown in Imari district of Saga prefecture has been used as specimen in the present study. The vibration test in the laboratory was carried out under identical conditions as those in highway trucks equipped with refrigeration units, which commute between Saga and Osaka.
    For the storage test, fruits were stored at 0oC and 10oC and 90% relative humidity.The influence on Brix, Acid, weight loss, mechanical properties and peel color were measured.
    Brix, Acid and mechanical properties were found to decrease with increased storage temperature and storage period. Under this condition weight loss was found to increase and peel color became darker. All of these properties significantly upon the whether they were subjected to vibration, were discriminated by the near infrared spectroscopy method.

Keywords: Japanese pear, vibration, storage, near infrared spectroscopy, discrimination

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