the potential of fourier transform near-infrared (ft-nir) spectroscopy technique was applied to determine moisture and soluble solids content of shahani date fruit. spectral acquisitions were carried out in reflectance mode using a ft-nir spectrophotometer in the range of 12000- 4000cm-1. three different preprocessing methods namely: multiplicative scatter correction (msc), first and second der...

Customers pay significant attention to the organoleptic and physicochemical attributes of their food with improvement living standards. In this work, near infrared hyperspectral technology was used evaluate one-color parameter, a*, firmness, soluble solid content (SSC) Korla fragrant pears. Moreover, iteratively retaining informative variables (IRIV) least square support vector machine (LS-SVM)...

We propose four methods for finding local subspaces in large spectral libraries. The proposed four methods include (a) cosine angle spectral matching; (b) hit quality index spectral matching; (c) self-organizing maps and (d) archetypal analysis methods. Then evaluate prediction accuracies for global and subspaces calibration models. These methods were tested on a mid-infrared spectral library c...

The quantitative description of the impact damage yellow peaches is an essential basis for evaluating their quality and guiding postharvest handling. In this study, combined hyperspectral technology mechanical parameters method were used to quantitatively investigate peaches. Firstly, parameters, which are damaged area, absorbed energy, maximum contact force, stress peaches, obtained by device....

The chlorophyll fluorescence parameter Fv/Fm plays a significant role in indicating the photosynthetic function of plants. existing technical methods used to measure are often inefficient and cumbersome. To realize fast non-destructive monitoring Fv/Fm, this study took rice under different fertilizer treatments measured hyperspectral reflectance information data leaves during whole growth perio...

• Low-cost non-destructive measurement of apple hardness by portable NIRS. Robust and reliable models were developed PLS, MLR ANN. Models based on the ANN had highest prediction performance. Seven featured wavelengths selected to form a compact model. A close-formed equation for online monitoring was developed. Portable near-infrared spectrometer in spectral range 900–1700 nm evaluated first ti...

Dental caries is one of the most prevalent chronic diseases. Early detection prominent to avoid tooth weakening or worst loss. UV absorption spectroscopy a non-invasive techniqueused for salivary alpha-amylase which are increasing in presence caries. Spectrum acquired from patient at Faculty dentistry, UKM showed significant peak around 260-300nm correspond amino acid found alpha-amylase.The sp...

OBJECTIVE A method for rapid analysis of the refining process of honey was developed based on near-infrared (NIR) spectroscopy. METHODS Partial least square calibration models were built for the four components after the selection of the optimal spectral pretreatment method and latent factors. RESULTS The models covered the samples of different temperatures and time points, therefore the mo...