研究目的
To evaluate the feasibility of using NIR spectroscopy and chemometric tools to determine the superficial citral (????????) content in microparticles.
研究成果
NIR spectroscopy coupled with chemometric tools has the potential for application in determining the superficial content of citral on microparticles, particularly when using ANN models. The ANN models showed slightly better fits than the other models.
研究不足
The study suggests that a larger number of samples must be studied to improve the generalizability of the models.
1:Experimental Design and Method Selection:
Citral was encapsulated in a matrix of dextrin using twelve combinations of citral:dextrin ratios (CDR) and inlet air temperatures (IAT). NIR spectroscopy was used to measure the absorption spectral profiles of the microparticles.
2:Sample Selection and Data Sources:
From each treatment, six samples were extracted for analysis.
3:List of Experimental Equipment and Materials:
A Unity Scientific NIR spectrometer (SpectraStar 2500XL, USA) was used for NIR spectroscopy. Other materials included soy lecithin, dextrin, citral, and hexane.
4:Experimental Procedures and Operational Workflow:
The spectral profiles were pretreated and randomly divided into modeling and validation datasets. Prediction models (PCA-MLR, PCA-ANN, PLSR, ANN) were built and validated.
5:Data Analysis Methods:
Statistical metrics such as the coefficient of determination (??2), adjusted coefficient of determination (??2??????), mean square error (MSE), and root mean square error (RMSE) were used to evaluate the models.
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