Detection of Stress Hormone in the Milk for Animal Welfare Using QCM Method

Autor: Kiyoshi Akiyama, Katsuji Uetake, Takeshi Ito, Akihisa Tsuchiya, Koji Suzuki, Nobuyoshi Aoki, Satoru Kaneko
Rok vydání: 2017
Předmět:
Zdroj: Journal of Sensors, Vol 2017 (2017)
ISSN: 1687-7268
1687-725X
DOI: 10.1155/2017/6486891
Popis: We developed a rapid and sequential analysis system to determine stress marker in the milk. One of the famous stress markers, cortisol, was detected using our method. Quartz crystal microbalance (QCM) method with a twin sensor was used in this study. One channel detected stress marker corresponding to antigen-antibody interaction and the other channel was used as a reference to remove environmental influences. Although nonspecific adsorption was monitored on each channel, frequency difference between them was within a few Hz on the injection of sample solution. One determination cycle including regeneration step could be performed within 10 minutes. The system could detect the cortisol level from 0.1 pg/mL to 100 pg/mL. These results show that our system has a potential to check the daily feeding condition for cows in terms of animal welfare.
Databáze: OpenAIRE