Nondestructive detection of tea’s internal quality is great significance for the processing and storage tea. In this study, hyperspectral imaging technology adopted to quantitatively detect content tea polyphenols in Tibetan teas by analyzing features spectrum wavelength ranging from 420 1010 nm. The samples are divided with joint x-y distances (SPXY) Kennard-Stone (KS) algorithms, while six al...

partial least square and principal component regression methods were applied to various mixtures of Allura Red and Brilliant Blue to determine the concentrations. Colorants, at the same time, were analyzed with UV-spectrophotometry in chemical separation. The obtained experimental data have been evaluated by chemometric methods as Partial Least Squares (PLS) and Principle Component Regressi...

Iron is an essential element used as supplement in different dosage-forms. Different time and expenditure-consuming methods introduced for detection and determination of elemental ions such as atomic absorption. In this research, two different and routine methods containing ATR-IR and atomic absorption were applied to define the amount of iron in 198 samples containing different concentrations ...