3.5. Glucobrassicin degradation products
ABG and I3C were identified using HPLC-MS and quantified with HPLC-DAD. I3A was identified and quantified using GC–MS. ABG is the major glucosinolate degradation product in sauerkraut and it is one of the most potent bioactive compounds in Brassica vegetables ( Wagner & Rimbach, 2009). The raw shredded cabbage itself contains a small amount of ABG and I3C as shown in ( Table in SI). During fermentation the content of glucobrassicin decreases with simultaneous increase in the content of ABG and I3C ( Fig. 4). At the end of fermentation (Day 9) ABG and I3C reached a maximum content of 13.0 and 4.52 μmol/100 g FW, respectively.