Insights into bioprocessed xylitol crystallization: Physico-chemical and techno-economic perspectives

Singh, Saumya; Arya, Shailendra Kumar; Krishania, Meena

doi:10.1016/j.scp.2024.101642

Sustainable Chemistry and Pharmacy

2024

DOI: 10.1016/j.scp.2024.101642

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Insights into bioprocessed xylitol crystallization: Physico-chemical and techno-economic perspectives

Saumya Singh,

Shailendra Kumar Arya,

Meena Krishania

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d-Xylitol Production from Sugar Beet Press Pulp Hydrolysate with Engineered Aspergillus niger

Knesebeck,

Rüllke,

Schönrock

et al. 2024

Microorganisms

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d-Xylitol is a low-calorie and anti-cariogenic sweetener suitable for diabetic patients, making it a valuable ingredient in various health-related applications. In this study, we investigated the production of d-xylitol from l-arabinose derived from sugar beet press pulp (SBPP) hydrolysate using an engineered Aspergillus niger strain. Initial batch studies applying stirred tank bioreactors demonstrated d-xylitol production of 4.6 g L−1 with a yield of 0.37 g d-xylitol g−1 l-arabinose with a synthetic medium. Subsequently, the conversion of enzymatically produced and clarified SBPP hydrolysate was studied. We found that pre-treatment of the enzymatic hydrolysate with activated carbon was essential to remove inhibitory components. Moreover, an automated aeration switch-off was implemented based on the CO2 signal of the off-gas analyzer of the stirred tank bioreactor to prevent d-xylitol degradation after l-arabinose depletion. This resulted in a final d-xylitol concentration of 4.3 g L−1 with an improved yield of 0.43 g d-xylitol g−1 l-arabinose. The feasibility of utilizing the agricultural residue SBPP for d-xylitol production was successfully demonstrated with engineered A. niger.

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d-Xylitol Production from Sugar Beet Press Pulp Hydrolysate with Engineered Aspergillus niger

Knesebeck,

Rüllke,

Schönrock

et al. 2024

Microorganisms

View full text Add to dashboard Cite

show abstract

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Insights into bioprocessed xylitol crystallization: Physico-chemical and techno-economic perspectives

Cited by 1 publication

References 60 publications

d-Xylitol Production from Sugar Beet Press Pulp Hydrolysate with Engineered Aspergillus niger

d-Xylitol Production from Sugar Beet Press Pulp Hydrolysate with Engineered Aspergillus niger

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