waste that did not co-digest and achieved optical purities of greater than 80% l(+)-lactate [12]. Many species of lactic acid bacteria (LAB)produce l(+)-lactate exclusively, however lactate is converted from the l to d form or vice versa by the lactate racemase enzyme [22].Production of lactate racemase is induced by l-lactate presence in L. plantarum, a dominant species previously identified in food waste fermentations [10,12,23]. Therefore, it is speculated that continuous separation of lactate during fermentation has the potential to improve control of optical purity.