scholarly journals Effect of nitrogen sources and neutralizing agents on D-lactic acid production from Kodo millet bran hydrolysate: comparative study and kinetic analysis

2019 ◽  
Vol 57 (3) ◽  
pp. 915-926 ◽  
Author(s):  
Rengesh Balakrishnan ◽  
Subbi Rami Reddy Tadi ◽  
Allampalli Satya Sai Pavan ◽  
Senthilkumar Sivaprakasam ◽  
Shyamkumar Rajaram
Keyword(s):  
Lactic Acid ◽  
Comparative Study ◽  
Kinetic Analysis ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Nitrogen Sources ◽  
Kodo Millet

scholarly journals Use of wheat straw and chicken feather hydrolysates as a complete medium for lactic acid production

2018 ◽  
Vol 36 (No. 2) ◽  
pp. 146-153 ◽  
Author(s):  
Gharwalová Lucia ◽  
Paulová Leona ◽  
Patáková Petra ◽  
Branská Barbora ◽  
Melzoch Karel
Keyword(s):  
Lactic Acid ◽  
Wheat Straw ◽  
Acid Production ◽  
Low Cost ◽  
Lactic Acid Production ◽  
Nitrogen Sources ◽  
Batch Process ◽  
Complete Medium ◽  
Biotechnological Production ◽  
Acid Yield

Biotechnological production of lactic acid has experienced a boom that is hindered only by the lack of low-cost, abundant material that might be used as a substrate for lactic acid bacteria. Such material should contain not only carbon but also complex nitrogen sources, amino acids and vitamins necessary for the balanced growth of the bacteria. Here, for the first time, a combination of hydrolysates of wheat straw and chicken feathers was used as a complete waste cultivation medium for lactic acid production. It was shown to be a promising substrate for lactic acid production, reducing the medium price by 73% compared with MRS broth, providing more than 98% lactic acid yield and high productivity (2.28 ± 0.68 g/l/h) in a fed-batch process using Lactobacillus reuterii LHR14.

scholarly journals Optimization of Lactic Acid Production from Pineapple By-Products and an Inexpensive Nitrogen Source Using Lactiplantibacillus plantarum strain 4O8

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Joel Romial Ngouénam ◽  
Pierre Marie Kaktcham ◽  
Chancel Hector Momo Kenfack ◽  
Edith Marius Foko Kouam ◽  
François Zambou Ngoufack
Keyword(s):  
Lactic Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Nitrogen Sources ◽  
Production Medium ◽  
Optimum Conditions ◽  
Pharmaceutical Industries ◽  
By Products

Lactic acid (LA) is used in food, cosmetic, chemical, and pharmaceutical industries and has recently attracted much attention in the production of biodegradable polymers. The expensive substances including carbon and nitrogen sources involved in its fermentative synthesis and the increasing market demand of LA have prompted scientists to look for inexpensive raw materials from which it can be produced. This research was aimed at determining the optimum conditions of lactic acid (LA) production from pineapple by-products and an inexpensive nitrogen source using Lactiplantibacillus plantarum strain 4O8. After collection and preparation of the carbon source (pineapple by-products) and nitrogen sources (by-products from fish, chicken, and beer brewing industries), they were used for the formulation of 4 different media in terms of nitrogen sources. Then, the proximate compositions of promising nitrogen sources were determined. This was followed by the screening of factors (temperature, carbon source, nitrogen source, MgSO4, MnSO4, FeSO4, KH2PO4, and KHPO4) influencing the production of LA using the definitive plan. Lastly, the optimization process was done using the central composite design. The highest LA productions ( 14.64 ± 0.05   g / l and 13.4 ± 0.02   g / l ) were obtained in production medium supplemented with chicken and fish by-products, respectively, making them the most promising sources of nitrogen. The proximate analysis of these nitrogen sources revealed that their protein contents were 83.00 ± 1.41 % DM and 74.00 ± 1.41 % DM for chicken by-products and fish by-products, respectively. Concerning the screening of factors, temperature, nitrogen source, and carbon source were the factors that showed a major impact on LA production in the production medium containing chicken by-products as nitrogen source. A pineapple by-product concentration of 141.75 g/l, a nitrogen source volume of 108.99 ml/l, and a temperature of 30.89°C were recorded as the optimum conditions for LA production. The optimization led to a 2.73-fold increase in LA production when compared with the production medium without nitrogen source. According to these results, chicken by-products are a promising and an inexpensive nitrogen source that can be an alternative to yeast extract in lactic acid production.

Wastes from bioethanol and beer productions as substrates for l(+) lactic acid production – A comparative study

2016 ◽  
Vol 48 ◽  
pp. 478-482 ◽  
Author(s):  
Aleksandra Djukić-Vuković ◽  
Dragana Mladenović ◽  
Miloš Radosavljević ◽  
Sunčica Kocić-Tanackov ◽  
Jelena Pejin ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Comparative Study ◽  
Acid Production ◽  
Lactic Acid Production

d(−)-Lactic Acid Production by Leuconostoc mesenteroides B512 Using Different Carbon and Nitrogen Sources

2011 ◽  
Vol 164 (7) ◽  
pp. 1160-1171 ◽  
Author(s):  
Luciana Fontes Coelho ◽  
Cristian J. Bolner de Lima ◽  
Marcela Piassi Bernardo ◽  
Jonas Contiero
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Leuconostoc Mesenteroides ◽  
Lactic Acid Production ◽  
Nitrogen Sources ◽  
Carbon And Nitrogen Sources ◽  
Carbon And Nitrogen
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