Breath odor characteristics after drinking and identification of sake quantity

327

236

The research and development of new electronic-nose applications in the biomedical field has accelerated at a phenomenal rate over the past 25 years. Many innovative e-nose technologies have provided solutions and applications to a wide variety of complex biomedical and healthcare problems. The purposes of this review are to present a comprehensive analysis of past and recent biomedical research findings and developments of electronic-nose sensor technologies, and to identify current and future potential e-nose applications that will continue to advance the effectiveness and efficiency of biomedical treatments and healthcare services for many years. An abundance of electronic-nose applications has been developed for a variety of healthcare sectors including diagnostics, immunology, pathology, patient recovery, pharmacology, physical therapy, physiology, preventative medicine, remote healthcare, and wound and graft healing. Specific biomedical e-nose applications range from uses in biochemical testing, blood-compatibility evaluations, disease diagnoses, and drug delivery to monitoring of metabolic levels, organ dysfunctions, and patient conditions through telemedicine. This paper summarizes the major electronic-nose technologies developed for healthcare and biomedical applications since the late 1980s when electronic aroma detection technologies were first recognized to be potentially useful in providing effective solutions to problems in the healthcare industry.

Section: Applications Of Electronic Noses In Biomedicinementioning

confidence: 99%

Advances in Electronic-Nose Technologies Developed for Biomedical Applications

Wilson

Baietto

2011

327

236

“…Phillips and co-workers demonstrated the detection of lung cancer [ 23 ] and breast cancer [ 24 ] from human breath using E-nose. An E-nose was also tested to help monitor alcoholic consumption of aged persons by measuring the odors from exhalation [ 25 ]. However, to our best knowledge, no report is yet available on E-nose monitoring of human armpit odor.…”

Section: Introductionmentioning

confidence: 99%

Detection and Classification of Human Body Odor Using an Electronic Nose

Wongchoosuk

Lutz

Kerdcharoen

2009

110

An electronic nose (E-nose) has been designed and equipped with software that can detect and classify human armpit body odor. An array of metal oxide sensors was used for detecting volatile organic compounds. The measurement circuit employs a voltage divider resistor to measure the sensitivity of each sensor. This E-nose was controlled by in-house developed software through a portable USB data acquisition card with a principle component analysis (PCA) algorithm implemented for pattern recognition and classification. Because gas sensor sensitivity in the detection of armpit odor samples is affected by humidity, we propose a new method and algorithms combining hardware/software for the correction of the humidity noise. After the humidity correction, the E-nose showed the capability of detecting human body odor and distinguishing the body odors from two persons in a relative manner. The E-nose is still able to recognize people, even after application of deodorant. In conclusion, this is the first report of the application of an E-nose for armpit odor recognition.

“…The human body releases chemical odors via various channels. This paper explores the uses of fabric-based chemical gas sensors to monitor the human body odor [ 32 ] as released from armpit [ 33 , 34 ], exhaled breath [ 35 ] and urine [ 36 ], as shown in Figure 3 . Unusual human body odors can indicate irregularities of the chemical system inside the body as caused by the diseases such as nephropathy, diabetes mellitus, liver cirrhosis and even liver cancer [ 37 ].…”

Section: Methodsmentioning

confidence: 99%

Development of Fabric-Based Chemical Gas Sensors for Use as Wearable Electronic Noses

Seesaard

Lorwongtragool

Kerdcharoen

2015

Novel gas sensors embroidered into fabric substrates based on polymers/ SWNT-COOH nanocomposites were proposed in this paper, aiming for their use as a wearable electronic nose (e-nose). The fabric-based chemical gas sensors were fabricated by two main processes: drop coating and embroidery. Four potential polymers (PVC, cumene-PSMA, PSE and PVP)/functionalized-SWCNT sensing materials were deposited onto interdigitated electrodes previously prepared by embroidering conductive thread on a fabric substrate to make an optimal set of sensors. After preliminary trials of the obtained sensors, it was found that the sensors yielded a electrical resistance in the region of a few kilo-Ohms. The sensors were tested with various volatile compounds such as ammonium hydroxide, ethanol, pyridine, triethylamine, methanol and acetone, which are commonly found in the wastes released from the human body. These sensors were used to detect and discriminate between the body odors of different regions and exist in various forms such as the urine, armpit and exhaled breath odor. Based on a simple pattern recognition technique, we have shown that the proposed fabric-based chemical gas sensors can discriminate the human body odor from two persons.