"Visualization" of the status of your diet by breath Murata Manufacturing supports the development of equipment that can quickly and accurately measure exhaled breath components.

  • Description

    We are recruiting co-creation partners to develop the “health management business using breath acetone measuring devices” as support for diabetes prevention and diet related companies.

  • Products used

    The “acetone indicator” is an exhaled breath gas analyzer that uses a simple gas chromatograph.


  • ・We are currently recruiting health management application companies using breath acetone and companies developing health foods, health care equipment and supplements and are looking for an effect measurement method.
  • ・Our breath acetone measuring devices are currently being produced and shipped, but we are recruiting companies who wish to improve acetone measuring devices because there are many contraindications such as meals and it is difficult to manage measurements.

If only you could easily visualize the status of your diet by measuring your exhaled breath. We think there are many people who are waiting for this kind of thing.

As the number of people with lifestyle-related diseases such as diabetes and high blood pressure, or people with potential lifestyle-related diseases continues to increase year by year, the number of patients with diabetes has reached 10 million as of 2019 and the number of potential diabetics has reached 20 million according to the “National Health and Nutrition Survey” carried out by the Ministry of Health, Labour and Welfare, and as of 2019, the national medical expenses for diabetes has increased to approximately 1.2 trillion yen and suppressing this has become a major issue.

Diets are recommended to prevent these lifestyle-related diseases, and at Murata Manufacturing, we are currently developing a small breath analyzer that can easily measure the acetone in exhaled breath. We are recruiting co-creation partners so that this breath acetone measuring device will be useful for product development by companies expanding their health management businesses such as diets.

What is a breath sensor?
When you breathe on it, it analyzes the components in the exhaled breath.

Humans continue to send various information about their health condition from inside their body to the outside, but conventional measurement methods faced problems such as “taking too much effort”, “taking too much time”, “costing too much money” and “that the number of people who can carry it out is limited”. In these circumstances, a method to analyze the gas component contained in human exhalation (breath) is attracting attention as an easy measurement method.

Humans “replace gas” between the air inhaled into the lungs and the capillaries by breathing. Therefore, the exhaled breath contains a lot of gas dissolved in the blood, and that gas contains substances that are closely related to human ecological activities. In other words, by detecting gas from exhaled breath and measuring its components in detail, it is possible to monitor health conditions.

For example, acetone in exhaled breath that was mentioned at the beginning is a type of ketone body generated when burning fat, and is a substance that is detected in exhaled breath. By measuring the concentration of acetone in the exhaled breath and visualizing fat burning, it is possible to grasp the diet effects in real-time.

Also, diabetics have a higher concentration of acetone in their exhaled breath. Because the energy of sugar in their blood cannot be used efficiently, this is to break down body fat and enable ketone bodies to be used. When the blood ketone body concentration rises too much in diabetics, the blood can become acidic and cause ketosis, and appropriate guidance and management by a doctor is required when conducting diet therapy. There are essays that show that acetone correlates with blood ketone body concentration, and we believe that we can conduct research including statistical methods and help companies with product ideas and software content that provide safe and secure diet solutions.

What is a breath sensor?

The breath sensor is attracting attention as a simple measurement method

The breath sensor is literally a device that measures human breathing (exhalation).

This breath measurement is less painful than a blood test by blood sampling, and it has the advantage of being cleaner and easier to perform than excrement tests such as urine and stool tests.

Because it is not a medical device, a medical judgment cannot be made, but it is attracting attention in the diet industry as a simple and accurate method to visualize the status of your diet.

The breath sensor is attracting attention as a simple measurement method

One of the challenges of the breath sensor is combining simplicity and accuracy

This is a breath test that offers advantages in that it can easily take measurements, but until now, there have also been some challenges. For example, the gas chromatograph is a typical breath test device, but it requires highly skilled professionals who can make measurements using the device and professional utilities such as expensive analyzers and high-pressure argon gas, and the device is large, requires large maintenance costs and a lot of time high performance analysis and can only be handled by large institutions, so it could not be easily introduced at any company.

Also, the use of simple breath measuring devices using semiconductor sensors have spread in recent years, but there were many challenges such as not being able to make accurate measurements without imposing various dietary restrictions because it is difficult to completely separate gas and acetone generated from what you ingested during meals. For example, because there is no filter that can completely sort out interfering gases other than the target gas type, so there are disadvantages such as measuring data other than the desired target as noise and the sensor getting toxified and changing the measured values.

The “breath acetone measuring instrument” provided by Murata Manufacturing Achieves high accuracy, small size and low cost.

In order to solve these challenges, we at Murata Manufacturing are currently developing a breath analyzer that is compact, simple, and capable of precise gas measurement.

When using a semiconductor sensor to detect gas types, the sensor will not only react to acetone, but also to reducing gas (ethanol: alcohol/liquor) and its metabolites, acetaldehyde and hydrogen, and there were cases where the accuracy of the original acetone measurement deteriorates. Therefore, after drinking alcohol or eating oranges, or using toothpaste or sprays to prevent bad breath with conventional breath acetone measuring devices, there were cases where we were instructed to secure time until measurements.

With Murata Manufacturing’s “breath acetone measuring devices”, the contraindications during measurement can be reduced by separating and measuring these noisy gases, and the measurement accuracy can be improved. Breath measurement is required, but not enough to introduce a gas chromatograph. I don’t want to conduct various gas measurements, but rather measure specifically for acetone. I don't want to spend time measuring and I want to know the results quickly. I’m looking for an easy measurement method that is small and has few restrictions during measurement. This is the optimal breath analyzer for those who have such needs.

Murata Manufacturing’s “breath acetone measuring devices”
Separation measurement/measurement time of mixed gas of acetone and ethanol

Gas separation measurement is possible in just five minutes.

The “breath acetone measuring device” can be used for performance measurement for diets and sports.

Breath acetone measurement and diet index

Breath acetone can be used as a diet index.

Energy taken from food is metabolized in the order of carbohydrates (glucose), fat and protein, but during a diet, body fat needs to be broken down and metabolized.

The ketogenic diet is a diet that breaks down body fat and uses the synthesized ketone bodies for metabolism from the metabolism of energy, mainly glucose, by limiting carbohydrates. Ketone bodies are a generic term for β-hydroxybutyric acid, acetoacetic acid and acetone, but β-hydroxybutyric acid and acetoacetic acid can be used as energy, and acetone is excreted as exhaled breath and skin gas.

The ketogenic diet is a method to promote the breakdown of body fat and metabolize it, so the diet can go well by measuring and monitoring acetone, which is a type of ketone body, but for companies that provide dietary guidance, it is possible to confirm that the guidance is being given correctly and apply that in the guidance. If the ketogenic diet is proceeded stoically, some people get sick due to a sudden rise in acetone concentration. It is possible to confirm “whether you are overdoing it” with the “breath acetone measuring device”.

Low carb diet:Mechanism of triglyceride consumption
Low carb diet:
Mechanism of triglyceride consumption
Low carb diet:Mechanism of triglyceride consumption

Dietary improvement monitoring by breath acetone measurement

Preventing yourself from becoming overweight and dieting are recommended to prevent lifestyle-related diseases.

Because a low-carbohydrate diet suppresses sugar intake, it inevitably increases fat intake.

After fat is absorbed in the small intestine, it is β-oxidized, converted to acetyl-COA and metabolized in the citric acid cycle (used as energy). β-oxidization occurs actively, and when acetyl-CoA is overproduced, that excess acetyl-CoA is used to produce ketone bodies in the liver, and it will be available throughout the body through the bloodstream.

By monitoring the exhaled acetone concentration with a “breath acetone measuring device” so that it does not rise excessively and controlling meals, we think that it can be used an index for dietary restrictions for a safe diet. We believe that we can conduct research including statistical methods, and as a general device, we wish to collaborate with companies considering businesses that support a safe diet.

Dietary improvement monitoring by breath acetone measurement

Improved performance (sports scenes/anti-aging)

The research on the use of breath acetone in the areas of sports and anti-aging has just begun, but activating β-oxidation of mitochondria is expected to promote injury recovery and cell activation. Breath acetone measurement is attracting attention as a means to visualize and measure this state. As research progresses in the future, we believe that a new solution is possible by combining the technology of Murata Manufacturing and the knowledge of service providers in these areas.

Improved performance (sports scenes/anti-aging)

Matching partner companies

Companies looking for an effect measurement method
We are recruiting companies that are currently developing health management applications, health foods, health management devices and supplements and searching for an effect measurement method.
Companies seeking to improve the performance of measuring instruments
Our breath acetone measuring devices are currently being produced and shipped, but we are recruiting companies who wish to improve acetone measuring devices because there are many contraindications such as meals and it is difficult to manage measurements.

Advantages of forming a partnership with Murata Manufacturing

Advantage 1
Inventor of key parts
At Murata Manufacturing, we hold an inventory of key parts for making the breath acetone measuring devices smaller and thinner.Therefore, we offer the advantage of providing a one-stop shop to purchase necessary devices.
Advantage 2
Abundance of acquired patents
We hold many patents to make up for the weaknesses of semiconductor gas sensors. We are currently in the process of applying for pending patent technology and usage rights required to solve problems and challenges faced in product development, so by collaborating with us, we offer the advantage of using them.
Advantage 3
Abundant experience in manufacturing
In developing measuring devices in collaboration, the establishment of a manufacturing system and verification will be required. In addition, many parts (module development) are required to commercialize them. Utilize the knowledge and knowhow of Murata Manufacturing, which has achieved numerous solutions as a manufacturing company since its founding.
Advantage 4
Easy parts module can be provided
At Murata Manufacturing, which already provides countless products in related industries, there are many cases where the device you need can be prepared from our existing lineup. Therefore, there is no need to newly develop and procure them, and we offer the advantage of being able to easily obtain necessary parts and modules.
Acetone measuring device developer

We will solve your problems

Acetone measuring device developer column
Murata Manufacturing, New Business Development Department : Hideki Ishida

When I was 35 years old, I was diagnosed as having metabolic syndrome at my first metabolic syndrome examination, and for 20 years since then, I struggled to lose weight even after attending swimming school, tennis school and going to the gym. However, when I tried limited carbohydrates after seeing a family member lose weight suddenly, I succeeded in losing 10kg in two months, and the numerical values such as triglyceride, liver function, and blood sugar level all went back to normal values.

At that time, I used a foreign-made breath acetone measuring device for the purpose of maintaining motivation, and the measuring devices that I could get my hands on were either cheap but not very accurate, or highly accurate but large and expensive. Also there were many contraindications before measuring, and the measured values sometimes fluctuated significantly after ingesting alcohol or oranges, or after brushing my teeth, so I didn’t know what to do. So, I decided to provide high-precision, compact, and inexpensive measuring devices that can’t be found existing products by reducing the size of the device using Murata Manufacturing’s small and thin parts and building a system that can measure only acetone gas with good selectivity.

From my own successful experience, I was convinced that carbohydrate restrictions using breath acetone measuring devices could become a socially meaningful businesses that can contribute to significantly reducing national medical expenses and lead to a reduction in prediabetes as an effective means to escape from the metabolic syndrome that has become a social problem.

Let's think together about how to promote the health of Japanese people, suppress medical expenses and solve issues of your product that support these.


Murata Manufacturing is looking for research institutions, companies, and other organizations who are in the relentless pursuit of innovation and interested in turning ideas into unique solutions that could quite possibly shape the future of electronics and our global society.