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 Anaerobic Acidification of Coconut Water Waste by Lactobacillus acidophilus Culture for Biotechnological Production of Lactic Acid

2019 ◽  
Vol 67 (6) ◽  
pp. 1433-1440
Author(s):  
Darwin ◽  
Ulfa Triovanta ◽  
Ridho Rinaldi ◽  
Atmadian Pratama
Keyword(s):  
Lactic Acid ◽  
Lactobacillus Acidophilus ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Batch Process ◽  
Coconut Water ◽  
Biotechnological Production ◽  
Optimal Production ◽  
Anaerobic Acidification ◽  
Water Waste

The biotechnological production of lactic acid could be carried out via anaerobic acidification process. In order to achieve an optimal production of lactic acid, the role of inoculum would be essential. The current study aimed to investigate as well as evaluate the effect of inoculum concentration on the anaerobic acidification of coconut water waste for the production of lactic acid. Results showed that the addition of 20% inoculums to the reactor fermenting coconut water waste was sufficient for the optimal production of lactic acid. In the batch process anaerobic acidification of coconut water waste inoculated with 20% inoculums of Lactobacillus acidophilus culture had the yield of lactic acid production, which was about 1.62 mmol lactic acid/mmol glucose while under the continuous operation the yield of lactic acid production obtained, was about 1.15 mmol lactic acid/mmol glucose. During the acidification process in both batch and continuous modes pH dropped significantly from 5.1 to 3.7.

scholarly journals Evaluation of biological production of lactic acid in a synthetic medium and in Aloe vera (L.) Burm. f. processing by-products

2015 ◽  
Vol 20 (3) ◽  
pp. 369 ◽  
Author(s):  
Javier Antonio Gómez-Gómez ◽  
Catalina Giraldo-Estrada ◽  
David Habeych ◽  
Sandra Baena
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Low Cost ◽  
Lactic Acid Production ◽  
Synthetic Medium ◽  
Aloe Vera ◽  
Acid Yield ◽  
Growing Conditions ◽  
Defined Culture ◽  
By Products

This study evaluated lactic acid production through batch fermentation in a bioreactor with <em>Thermoanaerobacter</em> sp. strain USBA-018 and a chemically defined culture medium and with hydrolyzed pressed extract of <em>Aloe vera</em> peel (AHE). The strain USBA-018 fermented various sugars, but its primary end-product was L-lactic acid. Factors which influenced L- lactic acid production were pH, addition of yeast extract (YE) and manganese chloride. Under the most favorable growing conditions for the production of lactic acid, yield (Yp/s) increased from 0.66 to 0.96 g/g with a productivity (Qp) of 0.62 g.l-1.h and a maximum lactic acid concentration of 178 mM at 26 hours of fermentation. When AHE was used, 93.3 mM, or 0.175 g.h/L, was obtained. These results show the potential for transformation of sugars that strain USBA-018 offers, but additional studies are needed to find out if different strategies using AHE as carbon source can produce large enough quantities of lactic acid to allow AHE to become a low-cost alternative substrate.

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 Lactic acid production from lime-treated wheat straw by Bacillus coagulans: neutralization of acid by fed-batch addition of alkaline substrate

2008 ◽  
Vol 78 (5) ◽  
pp. 751-758 ◽  
Author(s):  
Ronald H. W. Maas ◽  
Robert R. Bakker ◽  
Mickel L. A. Jansen ◽  
Diana Visser ◽  
Ed de Jong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Wheat Straw ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Bacillus Coagulans ◽  
Fed Batch

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.

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