Evaluation of extractable polyphenols released to wine from cooperage byproduct by near infrared hyperspectral imaging.Extractable total phenolic content of American non-toasted oak (Quercus alba L.) shavings has been determined using near infrared hyperspectral imaging.  Thus, near infrared hyperspectral imaging arises as an attractive strategy for predicting extractable total phenolic content in the range of 0-65 mg g-1, of great relevance from the point of view of quality assurance regarding wood used in the wine sector.  Near infrared hyperspectral imaging arises as an attractive strategy for the feasibility of enhancing the value of cooperage byproduct through the fast determination of extractable bioactive molecules, such as polyphenols.
near infrared hyperspectral imaging
Calibrations were performed by partial least squares regression (MPLS) using a number of spectral pre-treatments. 
partial least squares regression