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The present study was to develop and validate a hand-held AOTF-NIR measurement method enable to accurately determine low dose of Chinese Herbal Medicines (CHM). Yinhuang oral solutions were taken as an example, and an experimental protocol was then followed, involving two operators and independent production lots for data acquisition. On the basis of this protocol, partial least squares regression...
Near infrared (NIR) transmission spectroscopy has been widely used for quantitative analysis in different solvents system. Lower limit of quantification (LLOQ) of NIR in solvent of different hydrogen bonding capability has not been reported. This paper was to investigate the LLOQ of NIR for citric acid in different solvents (ethanol, water, acetone, DMSO) combined with partial least squares (PLS)...
The aim of this study was to investigate the feasibility of near infrared (NIR) spectroscopy and multivariate calibration (MVC) techniques in monitoring and understanding of the alcohol precipitation process of water extract of Lonicerae Japonicae within the framework of ICH's Quality by Design (QbD) and FDA's process analytical technology (PAT). The contents of Chlorogenic acid, Luteoloside and soluble...
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