scholarly journals Effect of Several Pretreatments on the Lactic Acid Production from Exhausted Sugar Beet Pulp

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2414
Author(s):  
Cristina Marzo ◽  
Ana Belén Díaz ◽  
Ildefonso Caro ◽  
Ana Blandino
Keyword(s):  
Lactic Acid ◽  
Sugar Beet ◽  
Positive Impact ◽  
Sugar Industry ◽  
Lactic Acid Production ◽  
Sugar Beet Pulp ◽  
Cellulose Content ◽  
Thermochemical Pretreatment ◽  
Commercial Enzymes ◽  
Beet Pulp

Exhausted sugar beet pulp (ESBP), a by-product of the sugar industry, has been used as a substrate to produce lactic acid (LA). Due to the fact that ESBP contains a high percentage of pectin and hemicellulose, different pretreatments were studied to solubilize them and to facilitate the access to cellulose in the subsequent enzymatic hydrolysis. Several pretreatments were studied, specifically biological, oxidant with alkaline hydrogen peroxide (AHP), and thermochemical with acid (0.25, 0.5, or 1% w/v of H2SO4). Pretreated ESBP was enzymatically hydrolysed and fermented with the strain Lactiplantibacillus plantarum for LA production. The hydrolysis was carried out with the commercial enzymes Celluclast®, pectinase, and xylanase, for 48 h. After that, the hydrolysate was supplemented with yeast extract and calcium carbonate before the bacteria inoculation. Results showed that all the pretreatments caused a modification of the fibre composition of ESBP. In most cases, the cellulose content increased, rising from 25% to 68% when ESBP was pretreated thermochemically at 1% w/v H2SO4. The production of LA was enhanced when ESBP was pretreated thermochemically. However, it was reduced when biological and AHP pretreatments were applied. In conclusion, thermochemical pretreatment with 1% w/v H2SO4 had a positive impact on the production of LA, increasing its concentration from 27 g/L to 50 g/L.

Feasibility of exhausted sugar beet pulp as raw material for lactic acid production

2020 ◽  
Vol 100 (7) ◽  
pp. 3036-3045
Author(s):  
Ana Belén Díaz ◽  
Claudia González ◽  
Cristina Marzo ◽  
Ildefonso Caro ◽  
Ana Blandino
Keyword(s):  
Lactic Acid ◽  
Sugar Beet ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Sugar Beet Pulp ◽  
Raw Material ◽  
Beet Pulp

scholarly journals Poly(Lactic Acid)–Poly(Butylene Succinate)–Sugar Beet Pulp Composites; Part I: Mechanics of Composites with Fine and Coarse Sugar Beet Pulp Particles

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2531
Author(s):  
Rodion Kopitzky
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Sugar Beet ◽  
Cell Structure ◽  
Sugar Beet Pulp ◽  
Poly Lactic Acid ◽  
Butylene Succinate ◽  
Fracture Patterns ◽  
Beet Pulp ◽  
The Impact

Sugar beet pulp (SBP) is a residue available in large quantities from the sugar industry, and can serve as a cost-effective bio-based and biodegradable filler for fully bio-based compounds based on bio-based polyesters. The heterogeneous cell structure of sugar beet suggests that the processing of SBP can affect the properties of the composite. An “Ultra-Rotor” type air turbulence mill was used to produce SBP particles of different sizes. These particles were processed in a twin-screw extruder with poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) and fillers to granules for possible marketable formulations. Different screw designs, compatibilizers and the use of glycerol as a thermoplasticization agent for SBP were also tested. The spherical, cubic, or ellipsoidal-like shaped particles of SBP are not suitable for usage as a fiber-like reinforcement. In addition, the fineness of ground SBP affects the mechanical properties because (i) a high proportion of polar surfaces leads to poor compatibility, and (ii) due to the inner structure of the particulate matter, the strength of the composite is limited to the cohesive strength of compressed sugar-cell compartments of the SBP. The compatibilization of the polymer–matrix–particle interface can be achieved by using compatibilizers of different types. Scanning electron microscopy (SEM) fracture patterns show that the compatibilization can lead to both well-bonded particles and cohesive fracture patterns in the matrix. Nevertheless, the mechanical properties are limited by the impact and elongation behavior. Therefore, the applications of SBP-based composites must be well considered.

Biodegradable Composites from Sugar Beet Pulp and Poly(lactic acid)

2005 ◽  
Vol 53 (23) ◽  
pp. 9017-9022 ◽  
Author(s):  
Liu ◽  
Marshall L. Fishman ◽  
Kevin B. Hicks ◽  
Cheng-Kung Liu
Keyword(s):  
Lactic Acid ◽  
Sugar Beet ◽  
Sugar Beet Pulp ◽  
Poly Lactic Acid ◽  
Biodegradable Composites ◽  
Beet Pulp

scholarly journals Effects of chemical preservative and pressing of ensiled sugar-beet pulp on the quality of fermentation process

2011 ◽  
Vol 50 (No. 12) ◽  
pp. 553-560 ◽  
Author(s):  
P. Doležal ◽  
V. Pyrochta ◽  
J. Doležal
Keyword(s):  
Lactic Acid ◽  
Sugar Beet ◽  
Dry Matter ◽  
Fermentation Process ◽  
Ph Value ◽  
Sugar Beet Pulp ◽  
Dry Matter Content ◽  
Chemical Preservative ◽  
Beet Pulp

This study deals with effects of pressing of ensiled sugar-beet pulp and of application of a chemical preservative on the quality of fermentation process. The experimental silages had a better sensory evaluation than the control ones. In silages treated chemically with a mixture of acids, statistically significantly (P < 0.01) higher dry matter content, lowest pH value, the value of lactic acid and the lowest content of all acids in dry matter were found after 180 days of storage from the beginning of the experiment. The statistically significantly (P < 0.01) highest lactic acid content (43.39 ± 1.25 g/kg DM) was determined in the control pressed silage. The highest LA/VFA ratio (1.40 ± 0.18) was calculated for non-pressed experimental silage (D – 3 l/t of KEM). As compared with untreated control the highest percentage (P < 0.01) of lactic acid and of all fermentation acids was found out in silage D treated with 3 l/t of KEM (58.18 ± 0.47 g/kg DM). Undesirable butyric and propionic acids were not found in chemically treated silage samples (C, D, E, F). However, the highest (P < 0.01) contents of butyric acid (26.37 ± 0.91 g/DM) and propionic acid (4.58 ± 0.78 g/DM) were measured in untreated non-pressed silage samples (B). The highest (P < 0.01) contents of acetic acid and ethanol were found in control silage samples. The quality of these silages was evaluated as very low.  

Green Composites from Sugar Beet Pulp and Poly(lactic acid): Structural and Mechanical Characterization

2007 ◽  
Vol 1 (3) ◽  
pp. 323-330 ◽  
Author(s):  
L. S. Liu ◽  
V. L. Finkenstadt ◽  
C.-K. Liu ◽  
D. R. Coffin ◽  
J. L. Willett ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Sugar Beet ◽  
Mechanical Characterization ◽  
Sugar Beet Pulp ◽  
Poly Lactic Acid ◽  
Green Composites ◽  
Beet Pulp

Sugar beet pulp as biomass

2017 ◽  
pp. 29-32 ◽  
Author(s):  
Kazm Eber Özba ◽  
Özen Özboy Özba
Keyword(s):  
Sugar Beet ◽  
Animal Feed ◽  
Sugar Industry ◽  
Low Cost ◽  
Industrial Applications ◽  
Single Cell Protein ◽  
Sugar Beet Pulp ◽  
Raw Material ◽  
Cell Protein ◽  
Beet Pulp

The sugar beet industry produces considerable amounts of organic waste and by-products. Sugar beet pulp (SBP) is the residue that remains after sugar extraction. SBP is a lignocellulosic by-product of the sugar industry and generally used as animal feed at relatively low price. Instead of cattle feeding, SBP can be used as a raw material for industrial applications because it is low-cost and available in large amounts. Biomass is a clean and renewable energy source. The use of SBP for the production of ethanol, methanol, single cell protein, biofuels etc. is economically very attractive. This literature review evaluates the use of SBP as biomass.

scholarly journals The Use of Acidic Hydrolysates after Furfural Production from Sugar Waste Biomass as a Fermentation Medium in the Biotechnological Production of Hydrogen

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3222 ◽  
Author(s):  
Cieciura-Włoch ◽  
Binczarski ◽  
Tomaszewska ◽  
Borowski ◽  
Domański ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Sugar Beet ◽  
Biogas Production ◽  
Sugar Beet Pulp ◽  
Energy Yield ◽  
Waste Biomass ◽  
Thermochemical Pretreatment ◽  
Production Of Hydrogen ◽  
Beet Pulp ◽  
Furfural Production

This study investigates a simultaneous processing of sugar beet pulp (SBP) for furfural, hydrogen and methane production using various pretreatment methods. In the experiments, sugar beet pulp was first subjected to thermal and thermochemical pretreatment at 140 °C. Then hydrolysates from these operations were investigated for their potential for methane and hydrogen production in batch tests. The experiments showed that thermal pretreatment of SBP resulted in the highest biogas and methane yields of 945 dm3/kg volatile solids (VS) and 374 dm3 CH4/kg VS, respectively, and a moderate hydrogen production of 113 dm3 H2/kg VS, which corresponded to a calculated energy production of 142 kWh/t; however, only low amount of furfural was obtained (1.63 g/L). Conversely, the highest furfural yield of 12 g/L was achieved via thermochemical pretreatment of SBP; however, biogas production from hydrolysate was much lower (215 dm3/kg VS) and contained only 67 dm3/kg VS of hydrogen. Meanwhile, in the experiment with lower amounts of sulfuric acid (2%) used for pretreatment, a moderate furfural production of 4 g/L was achieved with as high as 220 dm3/kg VS of hydrogen and the corresponding energy yield of 75 kWh/t.

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