[18a-E102-1~11] 12.7 Biomedical Engineering and Biochips

△ [18a-E102-5] Development of compact chlorophyll measurement system by filter-free wavelength sensor for agriculture

〇Ryoma Mibu¹, Ryosuke Ichikawa¹, Tomoya Ide¹, Yong-Joon Choi¹, Seitaro Toda¹, Kazuhiro Takahashi¹, Kotaro Takayama¹, Toshihiko Noda¹, Kazuaki Sawada¹ (1.Toyohashi Univ of Tech.)

Keywords:filter-free wavelength sensor, Chlorophyll a, Chlorophyll b

In this study, a compact system for on-site chlorophyll (Chl) measurement was fabricated, and the ratio of Chl a to Chl b (Chl a/b ratio) and the possibility of its quantification were verified using the system. The chlorophyll measurement system consists of a filter-free sensor and a system for measuring the microcurrents from the sensor. Experiments using Chl extracted from leaves with a spectrometer and a production system showed that both the Chl a/b ratio and the Chl content, which is the total amount of Chl a and Chl b, changed linearly.