Measurement of Volatile Fatty Acids in Silage through Odors with Nanomechanical Sensors

Kosuke Minami; Hisami Kobayashi; Masaaki Matoba; Yuko Kamiya; Subrata Maji; Takahiro Nemoto; Masanori Tohno; Ryoh Nakakubo; Genki Yoshikawa

doi:10.3390/bios13020152

論文 Measurement of Volatile Fatty Acids in Silage through Odors with Nanomechanical Sensors

Kosuke Minami (National Institute for Materials Science) ; Hisami Kobayashi ; Masaaki Matoba (National Institute for Materials Science) ; Yuko Kamiya ; Subrata Maji (National Institute for Materials Science) ; Takahiro Nemoto (National Institute for Materials Science) ; Masanori Tohno ; Ryoh Nakakubo ; Genki Yoshikawa (National Institute for Materials Science)

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Kosuke Minami, Hisami Kobayashi, Masaaki Matoba, Yuko Kamiya, Subrata Maji, Takahiro Nemoto, Masanori Tohno, Ryoh Nakakubo, Genki Yoshikawa. Measurement of Volatile Fatty Acids in Silage through Odors with Nanomechanical Sensors. Biosensors-Basel. 2023, 13 (2), 152-152. https://doi.org/10.3390/bios13020152

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(abstract)

The measurement of volatile fatty acids (VFAs) is of great importance in the fields of food and agriculture. There are various methods to measure VFAs, but most methods require specific equipment, making on-site measurements difficult. In this work, we demonstrate the measurements of VFAs in a model sample, silage, through its vapor using an array of nanome-chanical sensors—Membrane-type Surface stress Sensors (MSS). Focusing on relatively slow de-sorption behaviors of VFAs predicted with the sorption kinetics of nanomechanical sensing and the dissociation nature of VFAs, the VFAs can be efficiently measured by using features extracted from the decay curves of the sensing response, resulting in sufficient discrimination of the silage samples. Since the present sensing system does not require expensive, bulky setup and pre-treatment of samples, it has a great potential for practical applications including on-site measurements.

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