Open AccessDevelopment of calibration model for pH content of intact tomatoes using a low-cost Vis/NIR spectroscopy
Author(s) -
R. K. Wati,
Muhammad Fahri Reza Pahlawan,
Rudiati Evi Masithoh
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/686/1/012049
Subject(s) - spectroscopy , calibration , analytical chemistry (journal) , ultraviolet visible spectroscopy , content (measure theory) , materials science , diffuse reflectance infrared fourier transform , chemistry , chromatography , mathematics , biochemistry , statistics , physics , organic chemistry , quantum mechanics , photocatalysis , catalysis , mathematical analysis
Determination of pH of intact tomatoes was investigated using a low-cost Vis/NIR spectroscopy in reflectance mode. The best calibration model measured pH in intact tomatoes using wavelength range of 527-799 nm with R C 2 and SEC of 0.90 and 0.04, respectively. The prediction model obtained SEP, Bias, and RPD of 0.11, 0.007, and 1.17, respectively. The low-cost Vis/NIR type instrument is promising to be used for food and agricultural applications.