Rapid drying-free determination of pure cashmere content in scoured cashmere using a novel method of NIR spectroscopy combined with moisture elimination and spectral reconstruction strategy

•NIR spectroscopy was used to determine pure cashmere content without drying.•Spectral reconstruction method was proposed to retrive valuable physical information in NIR spectra.•Moisture elimination combing spectral reconstruction method improves prediction accuracy.•The RMSEP achieved 5.18% for moisture-containing scoured cashmere.