This study proposed a strategy for the production of lactide from biomass-derived carbohydrate with excellent yield, involving sugar to racemic lactic acid conversion over Sn-containing Beta zeolite and racemic lactic acid to lactide conversion over H-Beta zeolite. Structural characteristics of the resulting lactide and extensive applicability for various substrates are also presented.
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http://dx.doi.org/10.1039/d2cc00093h | DOI Listing |
Sensors (Basel)
January 2025
Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea.
This study presents the fabrication of a sustainable flexible humidity sensor utilizing chitosan derived from mealworm biomass as the primary sensing material. The chitosan-based humidity sensor was fabricated by casting chitosan and polyvinyl alcohol (PVA) films with interdigitated copper electrodes, forming a laminate composite suitable for real-time, resistive-type humidity detection. Comprehensive characterization of the chitosan film was performed using Fourier-transform infrared (FTIR) spectroscopy, contact angle measurements, and tensile testing, which confirmed its chemical structure, wettability, and mechanical stability.
View Article and Find Full Text PDFSci Rep
January 2025
Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-0012, Japan.
Lactones play crucial roles in various fields, such as pharmaceuticals, food, and materials science, due to their unique structures and diverse biological activities. However, certain lactones are difficult to obtain in large quantities from natural sources, necessitating their synthesis to study their properties and potential. In this study, we investigated the photocatalytic conversion of D-fructose, a biomass-derived and naturally abundant sugar, using a TiO photocatalyst under light irradiation in ambient conditions.
View Article and Find Full Text PDFBioresour Technol
December 2024
National & Local Joint Engineering Research Center of Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
The utilization of renewable lignocellulosic biomass resources is a promising solution to deal with the deficit of fossil resources and the associated environmental concerns. Among diverse biomass-derived products, lactic acid (LA) stands out as one of the most successful commodities and also a platform to connect raw biomass feedstocks with value-added chemicals and degradable polymers. Herein, we critically review the recent advances in the design and development of base, acid, and multifunctional catalytic systems for the conversion of different carbohydrates to LA and alkyl lactates via chemical routes.
View Article and Find Full Text PDFFront Chem
December 2024
Biomolécules: Conception, Isolement et Synthèse (BioCIS), UMR CNRS 8076, Université Paris-Saclay, Orsay, France.
Platform chemicals obtained from biomass will play an important role in chemical industry. Already existing compounds or not yet established chemicals are produced from this renewable feedstock. Using photochemical reactions as sustainable method for the conversion of matter furthermore permits to develop processes that are interesting from the ecological and economical point of view.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
School of Chemical Engineering, Northeast Electric Power University, Jilin 132012, China.
In this study successfully prepared AG@MXene/CC composite electrodes by employing a thermosolvation-ultrasonication technique combined with an impregnation method. This approach uniformly dispersed MXene, known for its high electrochemical properties, onto the surface of carbon cloth (CC) through biomass-derived AG hydrogels featuring a three-dimensional network structure. The hydrogen bonding and van der Waals forces between AG and MXene were harnessed to enhance material interactions, thereby improving electron transfer efficiency and electrocatalytic activity.
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