scholarly journals Physicochemical, Thermal and Rheological Properties of Pectin Extracted from Sugar Beet Pulp Using Subcritical Water Extraction Process

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1413
Author(s):  
Seyed Hadi Peighambardoust ◽  
Maryam Jafarzadeh-Moghaddam ◽  
Mirian Pateiro ◽  
José M. Lorenzo ◽  
Rubén Domínguez
Keyword(s):  
Sugar Beet ◽  
Corn Starch ◽  
Subcritical Water ◽  
Maximum Yield ◽  
Value Added ◽  
Extraction Process ◽  
Sugar Beet Pulp ◽  
Operational Parameters ◽  
Subcritical Water Extraction ◽  
Beet Pulp

The objective of this study was to characterize the properties of pectin extracted from sugar beet pulp using subcritical water (SWE) as compared to conventional extraction (CE). The research involved advanced modeling using response surface methodology and optimization of operational parameters. The optimal conditions for maximum yield of pectin for SWE and CE methods were determined by the central composite design. The optimum conditions of CE were the temperature of 90 °C, time of 240 min, pH of 1, and pectin recovery yield of 20.8%. The optimal SWE conditions were liquid-to-solid (L/S) ratio of 30% (v/w) at temperature of 130 °C for 20 min, which resulted in a comparable yield of 20.7%. The effect of obtained pectins on viscoamylograph pasting and DSC thermal parameters of corn starch was evaluated. The contents of galacturonic acid, degree of methylation, acetylation, and ferulic acid content were higher in the pectin extracted by SWE, while the molecular weight was lower. Similar chemical groups were characterized by FTIR in both SWE and CE pectins. Color attributes of both pectins were similar. Solutions of pectins at lower concentrations displayed nearly Newtonian behavior. The addition of both pectins to corn starch decreased pasting and DSC gelatinization parameters, but increased ΔH. The results offered a promising scalable approach to convert the beet waste to pectin as a value-added product using SWE with improved pectin properties.

Restructuring the Conventional Sugar Beet Industry into a Novel Biorefinery: Fractionation and Bioconversion of Sugar Beet Pulp into Succinic Acid and Value-Added Coproducts

2019 ◽  
Vol 7 (7) ◽  
pp. 6569-6579 ◽  
Author(s):  
Maria Alexandri ◽  
Roland Schneider ◽  
Harris Papapostolou ◽  
Dimitrios Ladakis ◽  
Apostolis Koutinas ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Succinic Acid ◽  
Value Added ◽  
Sugar Beet Pulp ◽  
Beet Pulp

scholarly journals An integrated biorefinery concept for conversion of sugar beet pulp into value-added chemicals and pharmaceutical intermediates

2017 ◽  
Vol 202 ◽  
pp. 415-431 ◽  
Author(s):  
Max Cárdenas-Fernández ◽  
Maria Bawn ◽  
Charlotte Hamley-Bennett ◽  
Penumathsa K. V. Bharat ◽  
Fabiana Subrizi ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Animal Feed ◽  
Value Added ◽  
Sugar Beet Pulp ◽  
High Yield ◽  
Integrated Biorefinery ◽  
Physico Chemical ◽  
Beet Pulp ◽  
Commercial Yeast ◽  
The Uk

Over 8 million tonnes of sugar beet are grown annually in the UK. Sugar beet pulp (SBP) is the main by-product of sugar beet processing which is currently dried and sold as a low value animal feed. SBP is a rich source of carbohydrates, mainly in the form of cellulose and pectin, including d-glucose (Glu), l-arabinose (Ara) and d-galacturonic acid (GalAc). This work describes the technical feasibility of an integrated biorefinery concept for the fractionation of SBP and conversion of these monosaccharides into value-added products. SBP fractionation is initially carried out by steam explosion under mild conditions to yield soluble pectin and insoluble cellulose fractions. The cellulose is readily hydrolysed by cellulases to release Glu that can then be fermented by a commercial yeast strain to produce bioethanol at a high yield. The pectin fraction can be either fully hydrolysed, using physico-chemical methods, or selectively hydrolysed, using cloned arabinases and galacturonases, to yield Ara-rich and GalAc-rich streams. These monomers can be separated using either Centrifugal Partition Chromatography (CPC) or ultrafiltration into streams suitable for subsequent enzymatic upgrading. Building on our previous experience with transketolase (TK) and transaminase (TAm) enzymes, the conversion of Ara and GalAc into higher value products was explored. In particular the conversion of Ara into l-gluco-heptulose (GluHep), that has potential therapeutic applications in hypoglycaemia and cancer, using a mutant TK is described. Preliminary studies with TAm also suggest GluHep can be selectively aminated to the corresponding chiral aminopolyol. The current work is addressing the upgrading of the remaining SBP monomer, GalAc, and the modelling of the biorefinery concept to enable economic and Life Cycle Analysis (LCA).

scholarly journals Sustainable Production of 5-Hydroxymethylfurfural from Pectin-Free Sugar Beet Pulp in a Simple Aqueous Phase System-Optimization with Doehlert Design

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5649
Author(s):  
Hanna Pińkowska ◽  
Małgorzata Krzywonos ◽  
Paweł Wolak ◽  
Przemysław Seruga ◽  
Agata Górniak ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Subcritical Water ◽  
Batch Reactor ◽  
Hydrothermal Process ◽  
System Optimization ◽  
Holding Time ◽  
Sugar Beet Pulp ◽  
Free Sugar ◽  
Phase System ◽  
Beet Pulp

Waste solid residue from the hydrothermal extraction of pectin derived from sugar beet pulp was used as feedstock in the production of 5-hydroxymethylfurfural (5-HMF). The depolymerization of pectin-free sugar beet pulp (PF-SBP) to monosaccharides and their dehydration to 5-HMF were conducted in subcritical water using a batch reactor. The experimental design methodology was used in order to model the hydrothermal process and to optimize the operational parameters of the reaction, namely temperature and holding time. These parameters are required to achieve the highest yield of 5-HMF. The model predicts, in good agreement with experimental results (R2 = 0.935), an optimal yield of 5-HMF (of approximately 38% in relation to the cellulosic fraction content in the PF-SBP) at a temperature of 192.5 °C and a holding time of about 51.2 min. 5-HMF was successfully isolated from the reaction mixture using the liquid–liquid extraction method. The results are suitable for industrial upscaling and may become an incentive to introduce a new, environmentally friendly, uncomplicated, and efficient waste treatment method. The method would be used to treat products from the sugar refining industry, the treatment of which has proven to be problematic until now.

scholarly journals Towards Higher Oil Yield and Quality of Essential Oil Extracted from Aquilaria malaccensis Wood via the Subcritical Technique

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3872
Author(s):  
M. Samadi ◽  
Z. Zainal Abidin ◽  
H. Yoshida ◽  
R. Yunus ◽  
D. R. Awang Biak
Keyword(s):  
Essential Oil ◽  
Processing Time ◽  
Subcritical Water ◽  
Value Added ◽  
Extraction Process ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Yield And Quality ◽  
Aquilaria Malaccensis

A method that delivers a high yield and excellent quality of essential oil, which retains most of its value-added compounds, and undergoes least change after the extraction process, is greatly sought after. Although chemical free methods are acceptable, they call for an extensive processing time, while the yield and quality from these methods are often disappointing. This work utilizes subcritical water technology to address these issues. In this undertaking, essential oil was extracted from Aquilaria malaccensis wood by way of subcritical conditions, and characterized through gas chromatography/mass spectroscopy (GC/MS). Optimization through response surface methodology revealed temperature to be the most critical factor for the extraction process, while the optimum conditions for temperature, sample-to-solvent ratio, and time for subcritical water extraction was revealed as 225 °C, 0.2 gr/mL, and 17 min, respectively. The subcritical water extraction technique involves two simultaneous processes, which are based on good fitting to the two-site kinetic and second order model. In comparison to the hydrodistillation method, GC/MS results indicated that the quality of A. malaccensis’ wood oils, derived through the subcritical water technique, are of significantly better quality, while containing many constructive value-added compounds, such as furfural and guaiacol, which are useful for the production of pesticides and medicines. Pore size, functional groups, and morphology analysis revealed the occurrence of substantial damage to the samples, which facilitated an improved extraction of bio-products. In comparison to conventional methods, the use of the subcritical method not only involves a shorter processing time, but also delivers a higher oil yield and quality.

scholarly journals Complete Utilization of the Major Carbon Sources Present in Sugar Beet Pulp Hydrolysates by the Oleaginous Red Yeasts Rhodotorula toruloides and R. mucilaginosa

2021 ◽  
Vol 7 (3) ◽  
pp. 215
Author(s):  
Luís Martins ◽  
Margarida Palma ◽  
Angel Angelov ◽  
Elke Nevoigt ◽  
Wolfgang Liebl ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Sugar Beet ◽  
Galacturonic Acid ◽  
Fruits And Vegetables ◽  
Carbon Sources ◽  
Value Added ◽  
Sugar Beet Pulp ◽  
Industrial Residues ◽  
Industrial Processing ◽  
Beet Pulp

Agro-industrial residues are low-cost carbon sources (C-sources) for microbial growth and production of value-added bioproducts. Among the agro-industrial residues available, those rich in pectin are generated in high amounts worldwide from the sugar industry or the industrial processing of fruits and vegetables. Sugar beet pulp (SBP) hydrolysates contain predominantly the neutral sugars d-glucose, l-arabinose and d-galactose, and the acidic sugar d-galacturonic acid. Acetic acid is also present at significant concentrations since the d-galacturonic acid residues are acetylated. In this study, we have examined and optimized the performance of a Rhodotorula mucilaginosa strain, isolated from SBP and identified at the molecular level during this work. This study was extended to another oleaginous red yeast species, R. toruloides, envisaging the full utilization of the C-sources from SBP hydrolysate (at pH 5.0). The dual role of acetic acid as a carbon and energy source and as a growth and metabolism inhibitor was examined. Acetic acid prevented the catabolism of d-galacturonic acid and l-arabinose after the complete use of the other C-sources. However, d-glucose and acetic acid were simultaneously and efficiently metabolized, followed by d-galactose. SBP hydrolysate supplementation with amino acids was crucial to allow d-galacturonic acid and l-arabinose catabolism. SBP valorization through the production of lipids and carotenoids by Rhodotorula strains, supported by complete catabolism of the major C-sources present, looks promising for industrial implementation.

Subcritical water hydrolysis of sugar beet pulp towards production of monosaccharide fraction

2018 ◽  
Vol 115 ◽  
pp. 32-39 ◽  
Author(s):  
Nikola Maravić ◽  
Zita Šereš ◽  
Senka Vidović ◽  
Aleksandra Mišan ◽  
Ivan Milovanović ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Subcritical Water ◽  
Sugar Beet Pulp ◽  
Beet Pulp ◽  
Water Hydrolysis ◽  
Subcritical Water Hydrolysis ◽  
Hydrolysis Of

Valorization of Sugar Beet Pulp to Value-Added Products: A Review

2021 ◽  
pp. 126580
Author(s):  
Zeba Usmani ◽  
Minaxi Sharma ◽  
Deepti Diwan ◽  
Manikant Tripathi ◽  
Eric Whale ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Value Added ◽  
Sugar Beet Pulp ◽  
Beet Pulp ◽  
Value Added Products

Obtaining of sorbing material based on sugar beet pulp

2019 ◽  
pp. 10-16
Author(s):  
S.V. Meshcheryakov ◽  
◽  
I.S. Eremin ◽  
D.O. Sidorenko ◽  
M.S. Kotelev ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Sugar Beet Pulp ◽  
Beet Pulp

Kinetic and thermodynamic study of the adsorption of calcium onto sugar beet pulp

2016 ◽  
pp. 565-570
Author(s):  
Huang Qin ◽  
Zhu Si-ming ◽  
Zeng Di ◽  
Yu Shu-juan
Keyword(s):  
Sugar Beet ◽  
Adsorption Equilibrium ◽  
Ph Value ◽  
Hard Water ◽  
Sugar Beet Pulp ◽  
Order Kinetic ◽  
Factors Affecting ◽  
Isotherm Equation ◽  
Equilibrium Data ◽  
Beet Pulp

Sugar beet pulp (SBP) was used as low value adsorbent for the removal of calcium from hard water. Batch experiments were conducted to determine the factors affecting adsorption of the process such as pH value and Ca concentration. The adsorption equilibrium of Ca2+ by the SBP is reached after 100min and a pseudo second-order kinetic model can describe the adsorption process. The initial concentrations of Ca varied from 927 to 1127mgCa2+/L. A dose of 30g/L sugar beet pulp was sufficient for the optimum removal of calcium. The overall uptake of Ca ions by sugar beet pulp has its maximum at pH=8. The adsorption equilibrium data fitted well with the Langmuir adsorption isotherm equation.

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