Batch and continuous production of propionic acid from whey permeate by Propionibacterium acidi-propionici in a three-electrode amperometric culture system
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منابع مشابه
Batch- and continuous propionic acid production from glycerol using free and immobilized cells of Propionibacterium acidipropionici.
Propionic acid production from glycerol was studied using Propionibacterium acidipropionici DSM 4900 cells immobilized on polyethylenimine-treated Poraver (PEI-Poraver) and Luffa (PEI-Luffa), respectively. Using PEI-Luffa, the average productivity, yield and concentration of propionic acid from 40 g L(-1) glycerol were 0.29 g L(-1) h(-1), 0.74 mol(PA) mol(Gly)(-1) and 20 g L(-1), respectively, ...
متن کاملEnhanced Propionate Formation by Propionibacterium freudenreichii subsp. freudenreichii in a Three-Electrode Amperometric Culture System.
In order to influence the fermentation pattern of Propionibacterium freudenreichii towards enhanced propionate formation, growth and product formation with glucose and lactate as energy sources were studied in a three-electrode poised-potential amperometric culture system. With anthraquinone 2,6-disulfonic acid (E(0)' = -184 mV; poised electron potential = -224 mV) or cobalt sepulchrate (E(0)' ...
متن کاملPropionic acid production from corn stover hydrolysate by Propionibacterium acidipropionici
BACKGROUND The production of value-added chemicals alongside biofuels from lignocellulosic hydrolysates is critical for developing economically viable biorefineries. Here, the production of propionic acid (PA), a potential building block for C3-based chemicals, from corn stover hydrolysate is investigated using the native PA-producing bacterium Propionibacterium acidipropionici. RESULTS A wid...
متن کاملKinetic study of continuous whey permeate fermentation by immobilized Lactobacillus helveticus for lactic acid production
A pH-controlled continuous lactic acid fermentation of whey permeate supplemented with yeast extract was carried out with Lactobacillus helveticus entrapped in K-carrageenan-locust bean gum gel beads at various dilution rates and pH set points. A kinetic study of the immobilized cell continuous fermentation in a 1-I stirred-tank reactor containing 33% (v/v) gel beads was carried out with an ori...
متن کاملOptimization of Single Cell Protein Production from Cheese Whey Under Batch and Continuous Cultivation
In this research the microorganism was initially isolated and selected after evaluation based on COD reduction of cheese whey and biomass production. The selected microorganism was identified as Trichosporon sp. The cultivation conditions of the microorganism were optimized under batch: temperature 30˚C initial pH = 6 aeration speed = 2 ν.ν.m and agitation rate: 800 rpm. Under these conditions,...
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ژورنال
عنوان ژورنال: Applied Microbiology and Biotechnology
سال: 1992
ISSN: 0175-7598,1432-0614
DOI: 10.1007/bf00240723