Rapid measurement of sake mash using differential near-infrared spectra of diffuse transmission and transflectance

被引:0
作者
Naito, Hirotaka [1 ,2 ]
Doi, Risako [1 ,2 ]
Maruyama, Hironori [3 ]
Wada, Atsushi [1 ,2 ]
Morio, Yoshinari [1 ,2 ]
Murakami, Katsusuke [1 ,2 ]
机构
[1] Mie Univ, Grad Sch, 1577 Kurimamachiya cho, Tsu, Mie 5148507, Japan
[2] Mie Univ, Fac Bioresources, Dept Environm Sci & Technol, 1577 Kurimamachiya cho, Tsu, Mie 5148507, Japan
[3] Mie Prefecture Ind Res Inst, 5-5-45 Takachaya, Tsu, Mie 5140819, Japan
关键词
Sake mash; Near infrared; Differential spectra; Diffuse transmission; Transflectance; GEOGRAPHICAL ORIGIN; SPECTROSCOPY; RICE;
D O I
10.1016/j.jbiosc.2024.01.009
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Available online 6 February 2024 Currently, various sake brewers employ data -driven approaches to ensure the stable production and supply of highquality products. This study aimed to develop a novel direct measurement system using near -infrared (NIR) spectroscopy to monitor the fermentation process of sake mash during brewing. Direct measurement of sake mash has been challenging because of the signi ficant absorption bands of water and the impact of physical properties such as multiple scattering within the mash. To address these challenges, we propose the subtraction of spectra, called differential re flectance, obtained through two measurement methods, namely, diffuse re flection and trans flectance, to reduce the impact of physical properties. This approach includes limiting the wavelength range from 400 to 1300 nm, utilizing the second derivative in the Savitzky - Golay method, and applying multiplicative scatter correction (MSC) to the entire wavelength. When partial least squares regression (PLS-R) was applied, the root mean square error for predicting (RMSEP) alcohol concentration in the model sake mash sample (14.65 - 18.41 % v/v) was 0.33 % v/v. Finally, as a practical experiment, alcohol concentrations in the actual mash (0.00 - 17.49 % v/v) were predicted with differential re flectance spectra by MSC. The resulting RMSEP value was 0.76 % v/v, a signi ficant improvement of 1.99 % v/v predicted by diffuse re flectance. These findings demonstrate the effectiveness of the proposed spectral subtraction method as a new direct measurement approach for monitoring sake fermentation in sake mash. (c) 2024, The Society for Biotechnology, Japan. All rights reserved.
引用
收藏
页码:274 / 280
页数:7
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