A Novel Acetone Sensor for Body Fluids.

A Novel Acetone Sensor for Body Fluids.
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DOI:
10.3390/bios14010004
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发表时间:
2023-12-22
期刊:
Biosensors
影响因子:
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通讯作者:
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中科院分区:
其他
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酮是众所周知的脂肪氧化在肝脏中产生的生物标志物,作为脂肪分解的结果。这些生物标志物包括血液/尿液中的乙酰乙酸和β-羟基丁酸,以及我们呼吸和皮肤中的丙酮。监测体内酮的产生对于那些使用热量摄入不足来减轻体重或使用生酮饮食来健康或治疗的人来说是必不可少的。目前监测酮类的方法包括尿试纸、毛细血管血液监测仪和呼吸分析仪。然而,这些现有的方法有一定的缺点,使它们无法得到更广泛的应用。在这项工作中,我们介绍了一种新的丙酮传感器装置,它可以检测呼吸中的丙酮水平,并克服了现有传感方法的缺点。该设备的关键元件是一个强大的传感器,能够使用互补金属氧化物半导体(CMOS)芯片测量丙酮,并方便地从红、绿、蓝反褶积成像方法进行数据分析。该丙酮传感器装置具有微摩尔浓度范围内检测的灵敏度、呼吸中丙酮检测的选择性和至少一个月的寿命稳定性。利用已建立的血酮参比法,对呼吸样本进行了实际测试,探讨了传感器装置的实用性。
Ketones are well-known biomarkers of fat oxidation produced in the liver as a result of lipolysis. These biomarkers include acetoacetic acid and β-hydroxybutyric acid in the blood/urine and acetone in our breath and skin. Monitoring ketone production in the body is essential for people who use caloric intake deficit to reduce body weight or use ketogenic diets for wellness or therapeutic treatments. Current methods to monitor ketones include urine dipsticks, capillary blood monitors, and breath analyzers. However, these existing methods have certain disadvantages that preclude them from being used more widely. In this work, we introduce a novel acetone sensor device that can detect acetone levels in breath and overcome the drawbacks of existing sensing approaches. The critical element of the device is a robust sensor with the capability to measure acetone using a complementary metal oxide semiconductor (CMOS) chip and convenient data analysis from a red, green, and blue deconvolution imaging approach. The acetone sensor device demonstrated sensitivity of detection in the micromolar-concentration range, selectivity for detection of acetone in breath, and a lifetime stability of at least one month. The sensor device utility was probed with real tests on breath samples using an established blood ketone reference method.
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