Production of lactic acid from paper sludge using acid-tolerant, thermophilic Bacillus coagulan strains

Fermentative lactic acid production from coffee pulp hydrolysate using Bacillus coagulans at laboratory and pilot scales

“…2 and Table 1). A yield of 0.78 g g À1 is comparable to the findings of earlier using B. coagulans and paper sludge or cellulose as carbon sources (Budhavaram and Fan, 2009;Ou et al, 2010). The difference in performance between laboratory and pilot scales is explainable by the fact that in the latter almost all carbon sources were consumed, while 16% of the carbon sources supplied remained at laboratory scale.…”

Hemp hurds biorefining: A path to green l-(+)-lactic acid production

“…Moreover, it produces enantiomerically pure LA. To improve the economy of LA production, different authors have proposed the use of low-cost and renewable raw materials as carbon source for fermentations, such as corncomb molasses (Wang et al, 2010) and paper sludge (Budhavaram and Fan, 2009). In the present study, the feasibility of L-(+)-LA production at high concentration, from hemp hurds was investigated.…”

Development of biocatalysts for production of commodity chemicals from lignocellulosic biomass

“…Recently, lactic acid (77.0 g/L) production from 100 g/L cellulose equivalent of paper sludge was reported using Bacillus coagulans strains. The semi-continuous saccharification and fermentation was carried out without pH control since these strains are thermophilic and acid tolerant (Budhavaram and Fan, 2009). Polylactic acid (PLA), a promising biodegradable polymer, is currently synthesized in two steps: fermentative production of lactic acid followed by chemical polymerization.…”