Program and book of abstracts 1st conference

1 st Conference of European Academy for Molecular Hydrogen Research in Biomedicine “Hydrogen for Biomedicine“

fermentation “Score” even higher if we calculate the equivalent concentration of H2 = 4 x 55 = 220 ppm, needed to get 55 ppm of CH4 in exhaled air. The sensitivity of the devices to CH4 was low and the results were very unreliable. In addition, while methane gas validation in dry air without hydrogen it has been found that 2 out of 4 AIRE2 devices ignored 55 ppm and 110 ppm concentration and 4 out of 4 ignored 11 ppm concentration. It is similar to 60% humidity air case except for 11 ppm could detect 1 out of 4 devices. Validation AIRE2 with hydrogen have shown that characteristics for hydrogen in the dry air is more linear as in the wet air. The deviation between devices results was more in the wet air then in dry air. It was about 1.48 +/-0.6 fermentation “Score” in the wet and about 0.86+/-0.4 “Score” in the dry air at 27 ppm H2 concentration. Unfortunately, mobile applications for iOS and Android OS are not identical. It is reflected by the different interruption time intervals between measurements in devices paired with Android OS smartphone (5 min) while in devices connected to the iOS smartphone this interval was much longer (15 min). CONCLUSIONS: The modelling of the human breath air showed that AIRE2 devices have lower sensitivity to CH4 than to H2. Calculations of the fermentation “Scores” were more correct when estimated H2 concentration compared with different CH4 concentrations and did not correlate with equivalent amount of H2 produced in modelling breath in methane producing people. The field of noninvasive fermentation rate determination has very good perspectives but the first device (AIRE2) available on the market is still in its infancy and not mature enough to be recommended for the wide usage for the personalized nutrition.

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