Xylitol: Bioproduction and Applications-A Review

Umai, Devasena; Kayalvizhi, R.; Kumar, Vinod; Jacob, Samuel

doi:10.3389/frsus.2022.826190

Cited by 54 publications

(15 citation statements)

References 163 publications

(143 reference statements)

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“…Initially, fermentation was carried out to produce 2G ethanol, which was then subjected to distillation. Subsequently, a second fermentation of the vinasse was conducted to obtain xylitol, a high-value sweetener widely used in the food and pharmaceutical industries [139,148]. The authors achieved ethanol and xylitol concentrations of 50 g/L and 32 g/L, respectively, corresponding to yields of 0.41 g/g for ethanol and 0.55 g/g for xylitol.…”

Section: Future Perspectives On Product Diversification For 2g Ethano...mentioning

confidence: 99%

Impact of Product Diversification on the Economic Sustainability of Second-Generation Ethanol Biorefineries: A Critical Review

Shibukawa,

Ramos,

Cruz-Santos

et al. 2023

Energies

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The replacement of fossil-based products with renewable alternatives is today a major research topic. Biofuels, such as second-generation ethanol, offer a promising way to overcome dependence on fossil fuels. However, second-generation biorefineries still face bottlenecks that hinder their economic sustainability. These include challenges in pretreatment (formation of inhibitors and high costs of chemicals) and hydrolysis (high enzyme costs and low solid content) and maximizing the utilization of biomass components. To achieve economic sustainability, biorefineries can adopt approaches such as integrating first and second generation (1G and 2G) technologies, using different production alternatives, or diversifying the product portfolio. This last alternative could include the simultaneous production of biomaterials, building blocks, and others from all fractions of the materials, favoring biorefinery profitability. Techno-economic assessment plays a crucial role in assessing the economic feasibility of these approaches and provides important information about the process. This article discusses how product diversification in cellulosic biorefineries enhances their economic sustainability, based on simulation techniques and techno-economic analysis, with a comprehensive and critical review of current possibilities and future trends. The information discussed can inform stakeholders about investing in 2G ethanol biorefineries, including strategies, associated risks, and profitability, allowing better planning of different options of future ventures.

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Section: Future Perspectives On Product Diversification For 2g Ethano...mentioning

confidence: 99%

Impact of Product Diversification on the Economic Sustainability of Second-Generation Ethanol Biorefineries: A Critical Review

Shibukawa,

Ramos,

Cruz-Santos

et al. 2023

Energies

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“…The use of xylose is commonly large in terms of sugar platform compounds for further applications . Moreover, xylose is an alternative high-value-added sweetener with anticariogenic properties, which are of great concern both for the food and biochemical industries. − The critical process in the production of the xylose-based molecules is the purification of the xylose from the hydrolysate itself.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Kinetic Equilibrium for Adsorption of Cellulosic Xylose of Commercial Cation-Exchange Resins

Phojaroen,

Raita,

Champreda

et al. 2024

ACS Omega

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The development of low-cost purification technology is an indispensable need for industrial biorefinery. Xylose is easily obtained from hydrothermal pretreatment of lignocellulosic biomass. This current study emphasizes the chromatographic monosaccharide separation process using commercial cationexchange resins (CER) including Amberlite 120 and Indion 225 to separate xylose from a mixture of hydrolysates. To understand the performance of the two CER, the studies of equilibrium, thermodynamics, and kinetics were evaluated. In this study, with different xylose concentrations, the adsorption equilibrium was found to follow the Freundlich isotherm model well (R 2 > 0.90 for both CER). The results indicated that a pseudo-second-order model represented the xylose adsorption kinetics. In addition, the activation energy of xylose adsorption onto both CER, i.e., Amberlite 120 and Indion 225 was 34.9 and 87.1 kJ/mol, respectively. The present adsorption studies revealed the potential of these commercial CER to be employed as effective adsorbents for monosaccharide separation technology.

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“…Xylitol has been approved for use in food products in over 50 countries for dietary purposes, particularly for food, pharmaceutical and odontological applications. Additionally, xylitol also possesses good stabilizing, moisturizing and cryoprotectant properties and has applicability in cosmetics and polymer industries too [ 7 ]. Currently, the annual market sale of xylitol is $823.6 million, with a projected increase to $1.37 billion by 2025 [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Bioprocess optimization for enhanced xylitol synthesis by new isolate Meyerozyma caribbica CP02 using rice straw

Singh,

Arya,

Krishania

2024

Biotechnol Biofuels

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The present work models the fermentation process parameters of the newly isolated, Meyerozyma caribbica CP02 for enhanced xylitol production and its fermentability study on rice straw hydrolysate. The study examined the impact of each of the process variables by one variable at a time optimization followed by statistical validation. Temperature of 32 °C, pH of 3.5, agitation of 200 rpm, 1.5% (v/v) inoculum, 80 gL−1 initial xylose was optimized. Subsequently, a sequential two-stage agitation approach was adopted for fermentation. At these optimized conditions, xylitol yield of 0.77 gg−1 and 0.64 gg−1 was achieved using media containing commercial and rice straw derived xylose, respectively. For scale up, in 3L batch bioreactor, the highest xylitol yield (0.63 gg−1) was attained at 72 h with rice straw hydrolysate media containing initial xylose (59.48 ± 0.82 gL−1) along with inhibitors (1.55 ± 0.10 gL−1 aliphatic acids, 0.0.048 ± 0.11 gL−1 furans, 0.64 ± 0.23 gL−1 total phenols). The results imply that even under circumstances characterized by an acidic pH and elevated initial xylose level, M. caribbica CP02, as an isolate, displays robustness and shows favorable fermentability of rice straw hydrolysate. Therefore, isolate CP02 has potential to be used in bio-refineries for high yield xylitol production with minimal hydrolysate processing requirements. Graphical Abstract

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Xylitol: Bioproduction and Applications-A Review

Cited by 54 publications

References 163 publications

Impact of Product Diversification on the Economic Sustainability of Second-Generation Ethanol Biorefineries: A Critical Review

Impact of Product Diversification on the Economic Sustainability of Second-Generation Ethanol Biorefineries: A Critical Review

Thermodynamic and Kinetic Equilibrium for Adsorption of Cellulosic Xylose of Commercial Cation-Exchange Resins

Bioprocess optimization for enhanced xylitol synthesis by new isolate Meyerozyma caribbica CP02 using rice straw

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