We transferred 46.9 ± 1.09 (mean ± SD) grams of the samples to 50 mL polypropylene centrifuge tubes. Upon centrifugation at 15,000 g for 15 min at 4 C, the aqueous phase (“press-juice”) was removed and triplicates of 1:10 and 1:15 dilutions in 0.9% NaCl were prepared for two samples of each group and time point. A volume of 30 ml of the press-juice dilutions was spotted on a zinc selenite (ZnSe) optical plate and dried at 40 C for 30 min. Infrared spectroscopy absorption spectra were recorded using a HTS-XT microplate adapter coupled to a Tensor 27