E3S Web Conf.
Volume 187, 2020The 13th Thai Society of Agricultural Engineering International Conference (TSAE 2020)
|Number of page(s)||6|
|Section||Postharvest and Food Engineering|
|Published online||08 September 2020|
Overall precision test of near infrared spectroscopy on mango fruits (Mangifera indica CV. ‘Nam Dok Mai Si Thong’) by on-line and off-line systems
1 King Mongkut’s Institute of Technology Ladkrabang, Department of Agricultural Engineering, Faculty of Engineering, Bangkok, Thailand.
2 King Mongkut’s Institute of Technology Ladkrabang, NIR Spectroscopy Research Center for Agricultural Products and Foods, Department of Agricultural Engineering, Faculty of Engineering, Bangkok, Thailand.
* Corresponding author: email@example.com
The near infrared (NIR) spectroscopy both on-line and off-line scanning was applied on mango fruits (Mangifera indica CV. ‘Nam dok mai- si Thong’) for the overall precision test. The reference parameter was total soluble solids content (Brix value). The results showed that the off-line scanning had a higher accuracy than on-line scanning. The scanning repeatability of the off-line and on-line systems were 0.00199 and 0.00993, respectively. The scanning reproducibility of the off-line and online systems were 0.00279 and 0.00513, respectively. The reference of measurement repeatability was 0.2. The maximum coefficient of determination (R2max) of the reference measurement was 0.894.
© The Authors, published by EDP Sciences, 2020
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