Carbonic Anhydrase Immobilization on Stabilized Lignin Nanoparticles for Aqueous-Phase Carbon Dioxide Capture
安定化リグニンナノ粒子への炭酸脱水酵素の固定化による水相CO2回収 (AI 翻訳)
Unnimaya Thalakkale Veettil, Maja‐Stina Svanberg Frisinger, Terence Infant, Marlene Andersson, Niklas Hedin, Mika H. Sipponen
🤖 gxceed AI 要約
日本語
本研究は、持続可能なリグニンナノ粒子（sLNPs）に炭酸脱水酵素（CA）を固定化し、水相でのCO2回収を促進するバイオ触媒システムを開発した。固定化酵素はpH 9.0で遊離酵素より高い比活性を示し、pH安定性が酵素の安定化に寄与することが示唆された。反応速度論とCO2吸収実験により、酵素固定化がCO2の水相吸収を向上させることが確認され、スケーラブルなバイオ触媒CO2回収技術の可能性を示した。
English
This study develops a biocatalytic system for aqueous CO2 capture by immobilizing carbonic anhydrase (CA) on sustainable lignin nanoparticles (sLNPs). The immobilized enzyme showed slightly higher specific activity than free enzyme at pH 9.0, suggesting pH-stable sLNPs stabilize CA. Kinetic and CO2 absorption experiments confirmed enhanced CO2 uptake, supporting scalable biocatalytic CO2 capture.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では、カーボンニュートラル実現に向けてCO2回収技術の開発が重要視されており、特に産業排出源からのCO2回収が課題となっている。本研究は、低コストで持続可能なバイオ触媒CO2回収技術の基盤となり得るもので、日本のCCUS戦略やグリーンイノベーション基金事業に関連する可能性がある。
In the global GX context
Globally, carbon capture technologies are critical for meeting net-zero targets, and enzyme-based systems offer a low-energy alternative to conventional amine scrubbing. This work contributes to the development of sustainable biocatalytic CO2 capture, relevant to CCUS deployment and climate mitigation strategies worldwide.
👥 読者別の含意
🔬研究者:Provides insights into enzyme immobilization on sustainable nanomaterials for CO2 capture, relevant for biocatalysis and CCUS research.
🏢実務担当者:May inform future development of scalable CO2 capture technologies, but currently at lab scale with no immediate business application.
🏛政策担当者:Highlights potential of bio-based CO2 capture technologies, relevant for R&D funding and climate policy support.
📄 Abstract（原文）
Abstract The continuous rise in atmospheric carbon dioxide (CO2) concentration and its contribution to global climate change necessitate the development of sustainable CO2 capture technologies. Enzyme-based CO2 capture systems, particularly those using carbonic anhydrase (CA), offer high catalytic efficiency, but their practical use is limited by high enzyme costs, reduced enzyme stability, and the difficulty of recovering them from water-based systems. Here, we report the immobilization of CA via straightforward adsorption onto sustainable and covalently stabilized lignin nanoparticles (sLNPs) for catalyzing aqueous-phase CO2 capture. The immobilized enzyme exhibited slightly higher specific activity than the free enzyme at technically important pH 9.0, which suggests that pH-stable sLNPs may contribute to stabilizing carbonic anhydrase within its microenvironment. The catalytic performance of the system was evaluated in a stopped-flow reactor by measuring CO2 hydration at pH 7.1 and 9.4 across temperatures between 30–60 °C, using the colorimetric response of pH-sensitive dyes. The reaction kinetics at pH 7.1 showed an Arrhenius-type temperature dependence, while non-Arrhenius behavior was observed at pH 9.4. Enzyme immobilization enhanced aqueous absorption of CO2, as shown by stirred-cell fall-in-pressure measurements at 40 and 60 °C. These results support the development of scalable biocatalytic systems for CO2 capture in aqueous media using CA.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acssusresmgt.6c00267first seen 2026-08-14 05:03:16
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