4.6 Article

Enzyme Immobilisation on Amino-Functionalised Multi-Walled Carbon Nanotubes: Structural and Biocatalytic Characterisation

期刊

PLOS ONE
卷 8, 期 9, 页码 -

出版社

PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0073642

关键词

-

资金

  1. ITRI think tank initiative [C0021.31.01]
  2. Deakin University [RM 25148]

向作者/读者索取更多资源

Background: The aim of this work is to investigate the structure and function of enzymes immobilised on nanomaterials. This work will allow better understanding of enzyme-nanomaterial interactions, as well as designing functional protein-nanomaterial conjugates. Methodology/Principal Findings: Multiwalled carbon nanotubes (MWNTs) were functionalised with amino groups to improve solubility and biocompatibility. The pristine and functionalised forms of MWNTs were characterised with Fourier-transform infrared spectroscopy. Thermogravimetric analysis was done to examine the degree of the functionalisation process. An immobilised biocatalyst was prepared on functionalised nanomaterial by covalent binding. Thermomyces lanuginosus lipase was used as a model enzyme. The structural change of the immobilised and free lipases were characterised with transmission electron Microscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy and Circular dichroism spectroscopy. Biochemical characterisation of immobilised enzyme showed broader pH and thermal optima compared to soluble form. Reusability of the immobilised enzyme for hydrolysis of long chain esters was demonstrated up to ten cycles. Conclusion/Significance: Lipase immobilised on MWNTs has exhibited significantly improved thermal stability. The exploration of advanced nanomaterial for enzyme immobilisation support using sophisticated techniques makes nanobiocatalyst of potential interest for biosensor applications.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Green & Sustainable Science & Technology

Effects of melt-state shear homogenization on catalytic pyrolysis of mixed plastic waste for feedstock recycling

M. Ahmadi, O. Zabihi, H. A. Nazarloo, K. Shirvanimoghaddam, X. Duan, P. Adetunji, B. Egan, M. Naebe

Summary: This research evaluates the potential of a homogenization and dechlorination algorithm to improve the homogeneity of mixed plastic waste. The results show that the physical, thermal, and rheological behavior of the waste improved significantly after extrusions. The inclusion of a clay catalyst reduced the activation energy and degradation temperature, and increased the amount of low carbon atom and aromatic products.

MATERIALS TODAY SUSTAINABILITY (2023)

Article Energy & Fuels

Biodiesel Production through Electrolysis Using an Ionic Liquid, 1-Ethyl-3-Methylimidazolium Chloride as a Supporting Electrolyte

Beyene Hagos Aregawi, Hoang Chinh Nguyen, Chun-Chong Fu, Hwai Chyuan Ong, Colin J. Barrow, Chia-Hung Su, Shao-Jung Wu, Horng-Yi Juan, Fu-Ming Wang

Summary: This study developed a novel catalyst-free electrolysis process using an ionic liquid as a supporting electrolyte for biodiesel production. The ionic liquid, 1-ethyl-3-methylimidazolium chloride ([Emim]Cl), exhibited the highest electrical conductivity and best electrolytic performance for transesterification. Optimized reaction conditions resulted in a maximum biodiesel yield of 97.76%, and [Emim]Cl could be efficiently reused for multiple cycles.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2023)

Article Energy & Fuels

One-Pot Synthesis of Biodiesel from Acid Oil Using a Switchable Solvent, 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU), as a Bifunctional Catalyst

Hoang Chinh Nguyen, Thanh Truc Pham, Nguyen Phuong Nguyen, Beyene Hagos Aregawi, Chun-Chong Fu, Colin J. Barrow, Chia-Hung Su, Shao-Jung Wu, Horng-Yi Juan

Summary: This study developed a new approach involving DBU-catalyzed one-pot reaction to produce biodiesel with enhanced reaction efficiency.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2023)

Article Green & Sustainable Science & Technology

Concentrating omega-3 fatty acids in Nannochloropsis oceanica oil by using enzyme immobilized nano-silica systems

Priyanshu Jain, Shovon Mandal, Amritpreet Kaur Minhas, Munish Puri, Colin J. Barrow

Summary: Burning agricultural waste leads to local air pollution and global warming. A study aims to develop efficient nano-silica-based biocatalysts for concentrating omega-3 fatty acids in algal oil. The immobilized nano-systems created using physical adsorption approach showed the highest enzyme activity and binding efficiency.

JOURNAL OF CLEANER PRODUCTION (2023)

Article Chemistry, Multidisciplinary

Robust Biocompatible Fibers from Silk Fibroin Coated MXene Sheets

Ken Aldren S. Usman, Ya Yao, Christine Jurene O. Bacal, Jizhen Zhang, Karyn L. Jarvis, Peter A. Lynch, Pablo Mota-Santiago, Si Qin, Minoo Naebe, Luke C. Henderson, Dylan Y. Hegh, Benjamin J. Allardyce, Joselito M. Razal

Summary: It has been found that using silk fibroin biopolymer as an additive for MXene fiber production improves durability, conductivity, and volumetric capacitance. These fibers also show no cytotoxicity towards THP-1 monocytic cells, making them suitable for flexible electronics and biomedical applications.

ADVANCED MATERIALS INTERFACES (2023)

Article Engineering, Chemical

LC-ESI-QTOF-MS/MS Characterization of Phenolic Compounds in Common Commercial Mushrooms and Their Potential Antioxidant Activities

Minghang Chu, Rana Dildar Khan, Ying Zhou, Osman Tuncay Agar, Colin J. Barrow, Frank R. Dunshea, Hafiz A. R. Suleria

Summary: In this study, ten mushroom species were analyzed for their phenolic content and antioxidant activity. The results showed that most of the mushroom varieties had high phenolic content and strong antioxidant activity, with shiitake mushrooms standing out in particular. The research also identified 22 phenolic compounds in the mushroom samples. These findings provide a scientific basis for the use of mushrooms in functional foods and other industries.

PROCESSES (2023)

Review Engineering, Chemical

Valorization of Food Waste to Produce Value-Added Products Based on Its Bioactive Compounds

Ziyao Liu, Thaiza S. P. de Souza, Brendan Holland, Frank Dunshea, Colin Barrow, Hafiz A. R. Suleria

Summary: The rapid growth of the global population and changes in lifestyle have led to a significant increase in food waste from various industrial, agricultural, and household sources. Nearly one-third of the food produced annually is wasted, resulting in severe resource depletion. This review explores the potential of utilizing bioactive compounds in food waste for the production of value-added products.

PROCESSES (2023)

Article Chemistry, Multidisciplinary

3D-Printed Biomimetic Hierarchical Nacre Architecture: Fracture Behavior and Analysis

Jigar Patadiya, Xungai Wang, Ganapati Joshi, Balasubramanian Kandasubramanian, Minoo Naebe

Summary: Nacreous architecture with a combination of toughness and modulus can be imitated through 3D printing at the micron to submicron level, meeting the demand in various applications. This study investigates the fabrication of two nacre structures (columnar and sheet) and a pristine structure using fused deposition modeling, exploring their superior mechanical properties, failure mechanism, crack propagation, and energy dissipation. The examination reveals that nacre structure has significant mechanical properties compared to a neat sample, with the sheet structure showing better impact resistance, elastic modulus, and flexural modulus than the columnar arrangement.

ACS OMEGA (2023)

Article Chemistry, Medicinal

Comparative Study on the Effect of Phenolics and Their Antioxidant Potential of Freeze-Dried Australian Beach-Cast Seaweed Species upon Different Extraction Methodologies

Vigasini Subbiah, Faezeh Ebrahimi, Osman T. Agar, Frank R. Dunshea, Colin J. Barrow, Hafiz A. R. Suleria

Summary: This study investigated the effect of ultrasonication and conventional methodologies on phenolic compounds in Australian beach-cast seaweed. Results showed that ultrasonication with 70% ethanol extraction resulted in higher total phenolic content and antioxidant potential for Cystophora sp. LC-ESI-QTOF-MS/MS analysis identified a total of 94 and 104 compounds in ultrasonication and conventional methods, respectively. These findings contribute to the development of nutraceuticals, pharmaceuticals, and functional foods from beach-cast seaweed.

PHARMACEUTICALS (2023)

Article Biotechnology & Applied Microbiology

Isolation and Cultivation of Penicillium citrinum for Biological Control of Spodoptera litura and Plutella xylostella

Hoang Chinh Nguyen, Kuan-Hung Lin, Thanh Phong Nguyen, Hong Son Le, Kim Ngan Ngo, Dinh Chuong Pham, Tuyet Nhung Tran, Chia-Hung Su, Colin J. Barrow

Summary: In this study, high pathogenicity Penicillium sp. were isolated from naturally infected insects and grown on agricultural residues as a substrate for sporulation. Different fungal isolates showed varying degree of pathogenicity against Spodoptera litura and Plutella xylostella, with strains P.04 and P.06 being the most effective. The newly isolated P. citrinum has the potential to be developed as a biological control agent for insect pests.

FERMENTATION-BASEL (2023)

Article Biotechnology & Applied Microbiology

Highly Active Astaxanthin Production from Waste Molasses by Mutated Rhodosporidium toruloides G17

Tuyet Nhung Tran, Ngoc-Tri Tran, Thu-Anh Tran, Dinh-Chuong Pham, Chia-Hung Su, Hoang Chinh Nguyen, Colin J. Barrow, Dai-Nghiep Ngo

Summary: This study aimed to produce astaxanthin from molasses using a newly mutated strain of Rhodosporidium toruloides G17 and evaluate its biological activities. By optimizing the culture conditions, a maximum astaxanthin yield of 1262.08 +/- 14.58 µg/L was achieved. The purified astaxanthin exhibited high antioxidant and anticancer activities, with 123-fold higher antioxidant activity than alpha-tocopherol and potent inhibitory effects against HeLa, A549, and MCF7 cancer cell lines.

FERMENTATION-BASEL (2023)

Review Biotechnology & Applied Microbiology

Development of sustainable downstream processing for nutritional oil production

Samuel Rollin, Adarsha Gupta, Christopher M. M. Franco, Surinder Singh, Munish Puri

Summary: This study examines the techniques and importance of sustainable alternatives for the extraction and processing of nutritional oils. The findings suggest that adopting environmentally friendly alternatives can improve efficiency and reduce toxicity, thereby meeting global needs more effectively.

FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY (2023)

Article Chemistry, Multidisciplinary

Mechanism of porosity development and defect engineering in chemically activated woven carbon fibres

Milad Laghaei, Chao Liu, Quanxiang Li, Minoo Naebe, Lingxue Kong

Summary: Chemical etching of carbon cloths (CCs) with potassium hydroxide (KOH) has been used to enhance their specific surface area (SSA). Different weight ratios (WRs) of CCs to KOH were investigated to understand pore development mechanism. The activated CCs with a WR of 0.01 wt%/wt% showed more than 15-fold increase in SSA compared to neat CCs, primarily due to outside-in pore deepening and metallic potassium intercalation. The introduction of KOH also affected defective sites and surface energy.

NEW JOURNAL OF CHEMISTRY (2023)

Review Chemistry, Multidisciplinary

Valorization of Date Fruit (Phoenix dactylifera L.) Processing Waste and By-Products: A Review

Linghong Shi, Thaiza Serrano Pinheiro de Souza, Farhad Ahmadi, Ali Imran, Frank R. Dunshea, Colin Barrow, Hafiz Ansar Rasul Suleria

Summary: This review investigates the potential of utilizing date by-products and waste as an eco-friendly resource for various chemical and biological processes. It provides an overview of the chemical and nutritional composition of dates and their by-products, as well as the beneficial utilization methods for date waste. The review also discusses the current challenges and future prospects in date waste valorization.

APPLIED SCIENCES-BASEL (2023)

Article Chemistry, Multidisciplinary

Advancing structural batteries: cost-efficient high-performance carbon fiber-coated LiFePO4 cathodes

Jaehoon Choi, Omid Zabihi, Mojtaba Ahmadi, Minoo Naebe

Summary: This study presents a promising approach for fabricating high-performance structural batteries with enhanced energy storage and structural capabilities.

RSC ADVANCES (2023)

暂无数据