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

Marzo, Cristina; Díaz, Ana Belén; Caro, Ildefonso; Blandino, Ana

doi:10.3390/foods10102414

Cited by 8 publications

(8 citation statements)

References 42 publications

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“…The cellulose content of the algal residue was measured following the standardized method 23 . The acid detergent fiber (ADF) and acid‐detergent lignin (ADL) needed to determine the content of cellulose in the residue were determined according to EN ISO 13906:2008 using a Fibertec 8000 (Foss Iberia, Barcelona, Spain) 24 …”

Section: Methodsmentioning

confidence: 99%

Use of macroalgal waste from the carrageenan industry as feedstock for the production of polyhydroxybutyrate

Romero‐Vargas

Gallé

Blandino

et al. 2023

Biofuels Bioprod Bioref

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The industrial waste generated in the extraction of carrageenan from red seaweed, Eucheuma spinosum, was tested in this study to produce fermentable sugars that could be used for the production of high‐value‐bioproducts with a biorefinery approach. A sequential process was used: thermochemical pretreatment with HCl and enzymatic hydrolysis. Hydrogen chloride concentrations in the range from 0 mol L−1 to 0.5 mol L−1 and pretreatment times from 15 to 100 min were assayed. The best conditions found for pretreatment were HCl 0.3 mol L−1 for 60 min, leading to reducing sugar concentrations of 21.4 g L−1 (274 mg of reducing sugars per gram of algal residue). The hydrolysates coming from the sequential process under the pretreatment conditions of HCl 0.3 mol L−1 for 60 and 80 min have been used successfully for the production of polyhydroxyalkanoates by Cupriavidus necator. The yields of polyhydroxybutyrate were 0.21–0.26 g PHB g−1 reducing sugar consumed and the accumulation of the biopolymer was of the order of 58% dry cell weight.

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Section: Methodsmentioning

confidence: 99%

Use of macroalgal waste from the carrageenan industry as feedstock for the production of polyhydroxybutyrate

Romero‐Vargas

Gallé

Blandino

et al. 2023

Biofuels Bioprod Bioref

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“…Nonetheless, a higher hydrolysis yield (0.92 g RS /g SBP ) was achieved when SBP was pretreated with sulfuric acid (0.66%) with a solid loading of 6% at 120 • C [51]. More recently, Marzo et al performed diluted acid pretreatment on SBP, studying the effect of sulfuric acid concentrations of 0.25, 0.5, or 1% w/v [52]. The pretreatment was performed by soaking the solid at a solid/liquid ratio of 1:20 (w/v) with a solution of sulfuric acid and autoclaving the mixture at 120 • C for 20 min.…”

Section: Pretreatments Applied To Sugar Beet Pulpmentioning

confidence: 99%

Sugar Beet Pulp as Raw Material for the Production of Bioplastics

2023

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The production of bioplastics from renewable materials has gained interest in recent years, due to the large accumulation of non-degradable plastic produced in the environment. Here, sugar beet pulp (SBP) is evaluated as a potential raw material for the production of bioplastics such as polylactic acid (PLA) and polyhydroxyalkanoates (PHAs). SBP is a by-product obtained in the sugar industry after sugar extraction from sugar beet, and it is mainly used for animal feed. It has a varied composition consisting mainly of cellulose, hemicellulose and pectin. Thus, it has been used to produce different value-added products such as methane, hydrogen, pectin, simple sugars, ethanol, lactic acid and succinic acid. This review focuses on the different bioprocesses involved in the production of lactic acid and PHAs, both precursors of bioplastics, from sugars derived from SBP. The review, therefore, describes the pretreatments applied to SBP, the conditions most frequently used for the enzymatic hydrolysis of SBP as well as the fermentation processes to obtain LA and PHAs.

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“…[37][38][39][40][41][42] The conversion of lactic acid from non-food biomass is well established. 43,44 The design of catalytic systems with high catalyst activity and selectivity, along with the selection of lactic acid monomers, holds significant research value for PLA preparation via direct melt polycondensation. Herein, we enhanced the conventional process of PLA preparation through direct melt polycondensation.…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of PLA from lactic acid derived from non‐food biomass is crucial for reducing the energy consumption of the reaction 37–42 . The conversion of lactic acid from non‐food biomass is well established 43,44 . The design of catalytic systems with high catalyst activity and selectivity, along with the selection of lactic acid monomers, holds significant research value for PLA preparation via direct melt polycondensation.…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic acid) synthesized from non‐food biomass feedstocks with tin‐loaded ZA molecular sieve catalysts by direct melt polycondensation

Gao,

Wang,

Yang

et al. 2023

Polymer International

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The design and synthesis of catalysts loaded with active components has attracted considerable attention in current research owing to their exceptional catalytic performance. In this study, the focus was on the utilization of tin‐loaded ZA molecular sieves, possessing remarkable adsorption properties, alongside the catalytic activity of tin. These catalysts were successfully prepared and employed for the synthesis of poly(lactic acid) (PLA) from lactic acid derived from non‐food biomass. By modifying the treatment of ZA molecular sieves, the properties of tin‐loaded ZA molecular sieves were adjusted. The resulting catalysts exhibited a high tin capacity ranging from 2.29% to 2.81% and featured abundant mesoporous structures, providing a surface area of up to 341.2 m2 g−1. Regarding the preparation of PLA, our findings demonstrated that ZA‐III‐Sn2+ as a catalyst yielded PLA with a higher weight‐average molecular weight (Mw) up to 2.57 × 104 g mol−1 and a higher yield of 65.3% compared to other catalysts. Moreover, the most optimal catalytic effect was achieved by adding the catalyst in three separate stages. Moreover, the amount of catalyst, reaction temperature and reaction time were found to influence both the molecular weight and yield of PLA. This study not only provides a valuable strategy for the preparation of loaded catalysts for PLA production but also offers new insights into the overall preparation process of PLA. © 2023 Society of Industrial Chemistry.

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

Cited by 8 publications

References 42 publications

Use of macroalgal waste from the carrageenan industry as feedstock for the production of polyhydroxybutyrate

Use of macroalgal waste from the carrageenan industry as feedstock for the production of polyhydroxybutyrate

Sugar Beet Pulp as Raw Material for the Production of Bioplastics

Poly(lactic acid) synthesized from non‐food biomass feedstocks with tin‐loaded ZA molecular sieve catalysts by direct melt polycondensation

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