Production of L-lactic acid from corn stover, a cheap, renewable
and abundant feedstock, by a thermophilic strain Bacillus sp. NL01
was shown in this study. For economy and convenience, the process
was conducted without sterilization and NaOH, instead of
CaCO3, was used as neutralizing reagent. After optimization of
the fermentation conditions, a potentially low-cost, energy-efficient,
and labor-saving fermentation strategy was established to
produce L-lactic acid with high concentration and high yield.