“…The basic principle of this technique is to utilize the color change induced by reaction between volatile materials and an array of chemical dyes (Suslick, Rakow, & Sen, 2004). In recent years, CSA has been applied to the analysis of fish freshness (Huang, Xin, & Zhao, 2011), chicken flavor (Kim, Li, Lim, Kang, & Park, 2016), Chinese liquor (Qin et al, 2012), solid state fermentation of acetic acid (Guan, Zhao, Lin, & Zou, 2013), classification of tea (Chen, Liu, Zhao, & Ouyang, 2013), and so forth. Guan, Zhao, Jin, and Lin (2017) employed CSA technology to discriminate the VOCs from rice samples with the free volatilization chamber, and the feasibility for discrimination of fresh and aged rices was proved.…”