P-18 Experimental Study of the Ultrasonic Sterilizing Effects when used simultaneously with Heating

Ichinose Fumiko, Ochiai Nobuyuki, Matsuoka Tatsuro, Koda Shinobu

doi:10.20577/pamjss.11.0_82

Bibliographic Information

Other Title

P-18 超音波に加熱を併用した殺菌効果の実験的検討

Abstract

Cans filled with beverages are generally sterilized by heating. In order to reduce damages to the content caused by the heat sterilization, experimental studies were performed to lighten the heat-sterilizing conditions by ultrasonic irradiation. In the study, effects of the ultrasonic irradiating condition, subject bacterial strain, and experimental temperature were studied, and the effect on heat-resistant bacteria was also studied. The sterilizing effect against mesophilic bacteria by ultrasonic frequency was more significant in the order of 500kHz > 45kHz > 130kHz > 90kHz. Also, it was found that the sterilizing effect is not found against heat-resistant bacteria. In order to obtain the effect of ultrasonic irradiation, water is required as a medium. Also, lower frequencies are desirable with respect to the better sound transmission. Therefore, in view of the present sterilizing facilities, the conversion of hot-shower type sterilizer to hot-bath type and addition of vibration equipment to heat exchanger in the treatment of compounded liquid are considered appropriate. Further, this method was found to be not applicable to the pressurized sterilizer of over 100℃ temperatures because it is not effective against heat-resistant bacteria.

Journal

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry 11 (0), 82-84, 2002

Japan Society of Sonochemistry

Details 詳細情報について

CRID: 1390282681028100352

NII Article ID: 110009710199

DOI: 10.20577/pamjss.11.0_82

ISSN: 24241512

Text Lang: ja

Data Source

JaLC
CiNii Articles

Abstract License Flag: Disallowed

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