Microwave-Driven Sugar Beet Pulp Liquefaction in Polyhydric Alcohols

Author(s):  
Zhao-Qi Zheng ◽  
Yi Liu ◽  
Dong Li ◽  
Li‐jun Wang ◽  
Benu Adhikari ◽  
...  

Abstract Liquefaction of sugar beet pulp (SBP) was carried out using microwave irradiation as the heating source, ethylene glycol/glycerol at a ratio of 80/20 (w/w) as the liquefaction solvent and sulfuric acid as the catalyst at 160 °C. The effects of different liquefaction conditions, including two particle size ranges of SBP, liquefying solvent-to-SBP solids (LS/S) ratio and reaction time on the liquefaction yield, viscosity of the liquefaction products, chemical characteristics and morphology of residues were studied using viscometry, Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electronic microscopy (SEM). The efficiency of liquefaction of SBP was found to depend on its particle size of SBP raw material and the LS/S ratio. The smaller SBP particles improved liquefaction efficiency and reduced the amount of solvent required. The crystallinity index of liquefaction residues indicated that crystalline cellulose was no longer the rate limiting factor of liquefaction process when the particle size of SBP was small (75–177 μm). A rugged and deformed surface of the liquefaction residue (observed through SEM) indicated that severe damage in the native fiber structure occurred during the liquefaction.

2021 ◽  
Vol 13 (9) ◽  
pp. 5317
Author(s):  
Sonja Simić ◽  
Jovana Petrović ◽  
Dušan Rakić ◽  
Biljana Pajin ◽  
Ivana Lončarević ◽  
...  

Sugar beet pulp (SBP) is a by-product of the sugar industry in which the dietary fiber content ranges from 73% to 80%. Compared to cereal fibers mainly used in biscuit production, sugar beet fibers are gluten free and have a perfect ratio of 2/3 insoluble fiber. In this work, sugar beet pulp was extruded with corn grits (ratios of corn grits to sugar beet pulp in extrudates were 85:15, 70:30, and 55:45), and the obtained sugar beet pulp extrudates (SBPEs) were used for improving the nutritional quality of cookies. The wheat flour in cookies was replaced with SBPEs in the amount of 5, 10, and 15%. The influence of three factors (the percentage of sugar beet pulp in the SBPEs, the size of the SBPE particles, and the percentage of wheat flour substituted with SBPEs) and their interactions on the nutritional quality of cookies, as well as their physical and sensory characteristics are examined using the Box–Behnken experimental design. The addition of extruded sugar beet pulp (SBPEs) significantly increased the amount of total dietary fiber and mineral matter of cookies. On the whole, the addition of SBPEs increased cookie hardness, but the hardness decreased with an increase in extrudate particle size. Sensory characteristics (except for the taste) were the most influenced by extrudate particle size.


2019 ◽  
Vol 141 ◽  
pp. 111829 ◽  
Author(s):  
P. Borysiuk ◽  
I. Jenczyk-Tolloczko ◽  
R. Auriga ◽  
M. Kordzikowski

2017 ◽  
pp. 29-32 ◽  
Author(s):  
Kazm Eber Özba ◽  
Özen Özboy Özba

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.


2017 ◽  
Vol 63 (No. 5) ◽  
pp. 207-212 ◽  
Author(s):  
Baryga Andrzej ◽  
Połeć Bożenna ◽  
Małczak Ewelina

The purpose of the work was to study the suitability of residue obtained during the methane fermentation process of sugar beet pulp for agricultural use in sugar beet plantations. Studies were performed with the sugar beet pulp fermentation residue and sugar beets (Beta vulgaris cv. Fighter) harvested from experimental plots. It was found that the by-product of sugar beet pulp digestion may be utilized in agriculture taking into account its chemical and microbiological standards. The nutrients in digestion residue were as assimilable for sugar beet plants as the nutrients in mineral fertilizers. The evaluation of technological parameters of sugar beet harvested from experimental plots based on standard technological criteria showed that irrespective of fertilization treatment, the raw material obtained met most of the requirements and can be used as a stock material for sugar production.


Foods ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1351
Author(s):  
Cristina Marzo ◽  
Ana Belén Díaz ◽  
Ildefonso Caro ◽  
Ana Blandino

In this study, the production of a hydrolysate rich in fermentable sugars, which could be used as a generic microbial culture medium, was carried out by using exhausted sugar beet pulp pellets (ESBPPs) as raw material. For this purpose, the hydrolysis was performed through the direct addition of the fermented ESBPPs obtained by fungal solid-state fermentation (SSF) as an enzyme source. By directly using this fermented solid, the stages for enzyme extraction and purification were avoided. The effects of temperature, fermented to fresh solid ratio, supplementation of fermented ESBPP with commercial cellulase, and the use of high-solid fed-batch enzymatic hydrolysis were studied to obtain the maximum reducing sugar (RS) concentration and productivity. The highest RS concentration and productivity, 127.3 g·L−1 and 24.3 g·L−1·h−1 respectively, were obtained at 50 °C and with an initial supplementation of 2.17 U of Celluclast® per gram of dried solid in fed-batch mode. This process was carried out with a liquid to solid ratio of 4.3 mL·g−1 solid, by adding 15 g of fermented solid and 13.75 g of fresh solid at the beginning of the hydrolysis, and then the same amount of fresh solid 3 times every 2.5 h. By this procedure, ESBPP can be used to produce a generic microbial feedstock, which contains a high concentration of monosaccharides.


2004 ◽  
Vol 32 ◽  
pp. 239-241 ◽  
Author(s):  
RKT Bice ◽  
MJS Moore–Colyer

The equid has been estimated to derive 70% of energy from volatile fatty acids (VFA) production. Hind gut fermentation in the equid degrades structural carbohydrates to VFA's that are oxidised by the liver as a source of energy. Maximising this potential source of energy is an important consideration when attempting to improve the utilisation of fibre feeds by the equid. It is generally accepted that the acetate:propionate:butyrate are produced in a ratio of 76:18:5 by horses consuming forage diets (Moore–Colyer 2000). This optimum can be unbalanced by the inclusion of high levels of cereal–based concentrates in the diet. Therefore to maximise hindgut function it is important to maximise the use of high–energy fibrous feeds such as alfalfa and sugar beet pulp (USBP), while reducing the inclusion of concentrate feeds. This experiment sought to determine the effect of feed preparation, namely particle size on VFA profiles from a range of alfalfa : unmolassed sugar beet pulp diets.


2020 ◽  
Vol 100 (7) ◽  
pp. 3036-3045
Author(s):  
Ana Belén Díaz ◽  
Claudia González ◽  
Cristina Marzo ◽  
Ildefonso Caro ◽  
Ana Blandino

2021 ◽  
pp. 582-590
Author(s):  
TatsuyaTatsuya Abe ◽  
Taizo Nagura ◽  
Hirokatsu Uchino

Three sugar beet pulp samples, which were dried by different methods (drum-dried, steam-dried, and shelf-dried), were prepared and hot water extractions (90 °C, 6 h) were performed to compare the pectic polysaccharide yield. The steam-dried pulp yielded 34.1 g of pectic polysaccharides per 100 g of dry matter. This represented about twice the yield of the other techniques, with a recovery of about 60% of the estimated amount contained in the raw material. The pectic polysaccharide obtained from the steam-dried pulp by hot water extraction and dialysis contained larger amount of arabinose (32.4 g/ 100 g solids) as constituent sugars than that of commercial beet pectin. The weight-average molecular mass was 175 kDa, which was lower than that of commercial beet pectin (538 kDa) and most of the extracted feruloyl group were bound to this polysaccharide. These characteristics were similar to those of pectic polysaccharides obtained previously by autoclave extraction from wet beet pulp. It was presumed that the pectic polysaccharides contained in sugar beet pulp were partially hydrolyzed and solubilized under pressurized and high temperature conditions (0.25–0.3 MPa, 150–180 °C) during steam drying, making them easier to extract. Using steam-dried pulp as a raw material, feruloylated arabinan-rich pectic polysaccharides can be efficiently obtained by hot water extraction under non-pressurized conditions without acid addition.


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