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DETECTING METHOD OF FOOD-POISONING BACTERIA AND SENSOR USING THE SAME

机译:使用同一方法检测食物中毒细菌和传感器的方法

摘要

PURPOSE: To detect a food-poisoning bacteria in a food constituent simply and quickly by bringing the food constituent into contact with a surface acoustic wave element on which an anti-food-poisoning bacteria antibody is stuck and by measuring a change in a frequency before and after the contact. ;CONSTITUTION: A surface acoustic wave oscillator 17 having transducers 13 and 15 provided on a crystal plate 11 of ST cut is covered with polystyrene and an anti-food-poisoning-bacteria antibody 19 is stuck between the two transducers 13 and 15, whereby a sensor 21 is prepared. This sensor 21 is connected with amplifiers 23 and 25 and a frequency counter provided between them. A food constituent is brought into contact with the sensor 21, and based on a change in a frequency before and after the contact, a food-poisoning bacteria in the food constituent is detected. The sensor 21 is subjected to washing in three times by a phosphoric acid buffer and protection of a nonspecific adsorption site by calf serum albumin, so as to prevent fluctuation in the frequency due to a cause other than combination of the food-poisoning bacteria.;COPYRIGHT: (C)1993,JPO&Japio
机译:目的:通过使食品成分与表面附着有抗食品中毒细菌抗体的声表面波元件接触并测量其频率变化,来简单,快速地检测食品中的食品中毒细菌和联系之后。 ;组成:表面声波振荡器17,其具有设置在ST切割的晶体板11上的换能器13和15,上面覆盖有聚苯乙烯,并且在两个换能器13和15之间插入了抗食物中毒细菌抗体19,准备传感器21。该传感器21与放大器23和25以及设置在它们之间的频率计数器连接。使食物成分与传感器21接触,并且基于接触之前和之后的频率变化,检测食物成分中的食物中毒细菌。传感器21用磷酸缓冲液洗涤三遍,并用小牛血清白蛋白保护非特异性吸附位点,以防止由于食物中毒细菌以外的原因引起的频率波动。版权所有:(C)1993,JPO&Japio

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