Lactic acid production from sugarcane bagasse hydrolysates by Lactobacillus pentosus : Integrating xylose and glucose fermentation

2018 ◽  
Vol 35 (1) ◽  
pp. e2718 ◽  
Author(s):  
Daiana Wischral ◽  
Johanna Méndez Arias ◽  
Luiz Felipe Modesto ◽  
Douglas de França Passos ◽  
Nei Pereira
2018 ◽  
Vol 29 (1) ◽  
pp. 41-51
Author(s):  
Daiana Wischral

Lactic acid, traditionally obtained through fermentation processes, presents numerous applications in the chemical industry. Among these is the production of polymers, more specifically biodegradable polylactic acid (PLA). Development of processes that use low cost substrates, such as bioproduction of lactic acid, could improve the economic viability of bioprocesses. Thus, the present work reports investigation of hemicellulose hydrolysate from sugarcane bagasse as a sole carbon source for lactic acid production by Lactobacillus pentosus ATCC 8041. Initially, sugarcane bagasse was pretreated with acid in a solid:liquid ratio of 1:2.8 (1 g of bagasse: 2.8 mL of sulfuric acid solution 1 % v/v) and at a temperature of 121°C for 27 minutes. Then, concentration of both the hemicellulose hydrolysate and the yeast extract in MRS medium were optimized usingResponse Surface Methodology through software STATISTICA 6.0. Once the optimal conditions (40 % of hemicellulose hydrolysate and 5 g/L of yeast extract) were validated, fermentations were carried out in anaerobic conditions at 37°C and 120 rpm. After 48h, 19.17 g/L of lactic acid were produced, corresponding to a volumetric productivity of 0.40 g/L.h1. Findings of this work demonstrate that hemicellulose hydrolysate from sugarcane bagasse is a promising carbon source for lactic acid production.


Author(s):  
Ketaki Nalawade ◽  
Paharika Saikia ◽  
Shuvashish Behera ◽  
Kakasaheb Konde ◽  
Sanjay Patil

2019 ◽  
Vol 6 ◽  
pp. 26-31 ◽  
Author(s):  
Regiane Alves de Oliveira ◽  
Roland Schneider ◽  
Carlos Eduardo Vaz Rossell ◽  
Rubens Maciel Filho ◽  
Joachim Venus

2010 ◽  
Vol 101 (3) ◽  
pp. 1036-1043 ◽  
Author(s):  
Pattana Laopaiboon ◽  
Arthit Thani ◽  
Vichean Leelavatcharamas ◽  
Lakkana Laopaiboon

2007 ◽  
Vol 9 (1) ◽  
pp. 58-62 ◽  
Author(s):  
Mukund G. Adsul ◽  
Anjani J. Varma ◽  
Digambar V. Gokhale

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