Article
Chemistry, Multidisciplinary
Ermides Chavez-Baldovino, Carlos A. Malca-Reyes, Roberto Masso, Peter Feng, Adrian Camacho, Janeth Sarmiento, Justin I. Borrero Negron, Yomaira J. Pagan-Torres, Liz M. Diaz-Vazquez
Summary: In this study, carrageenan membranes with different concentrations of titanium dioxide nanoparticles (TiO2 NPs) and Ni/CeO2 were used to prepare a novel fuel cell electrode for the oxidation of ethanol. The physicochemical properties of each membrane were characterized, and the carrageenan nanocomposite with 5 wt % TiO2 NPs showed the highest ionic conductivity (2.08 x 10(-4) S/cm). The CR5% membrane was mixed with Ni/CeO2 to prepare the working electrode, and cyclic voltammetry measurements showed peak current density values of 9.52 and 12.22 mA/cm(2) for the oxidation of ethanol over CR5% + Ni/CeO2 at forward and reverse scan voltages, respectively. The CR5% + Ni/CeO2 membrane was found to be more efficient in the oxidation of ethanol compared with commercially available Nafion membranes containing Ni/CeO2.
Article
Chemistry, Applied
Behraad Tirgarian, Jamshid Farmani, Reza Farahmandfar, Jafar M. Milani, Filip Van Bockstaele
Summary: This study successfully prepared emulsions using protein-anionic polysaccharide Maillard conjugates, with SC-AHSG conjugates showing the best emulsifying properties. The optimized emulsions had small droplet size, monomodal distribution, and high stability.
Article
Chemistry, Applied
Shima Tavakoli, Mahshid Kharaziha, Shervin Nemati, Ali Kalateh
Summary: The study developed a novel Kappa carrageenan-coated Starch/cellulose nanofiber hydrogel with enhanced mechanical properties and adjustable biological performance, showing great potential for hemostatic applications.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Jiseon Kang, Seok Il Yun
Summary: In this study, covalently crosslinked sodium carboxymethyl cellulose-hydroxyethyl cellulose hydrogel films were prepared using citric acid as the crosslinking agent. The physically crosslinked kappa-carrageenan polymer was added into the hydrogel structure, resulting in kappa-CG/CMC-HEC double network hydrogels. The introduction of kappa-CG physical network significantly improved the mechanical properties and water-absorption capacity of the hydrogels.
Article
Food Science & Technology
Montserrat Martinez-Pineda, Cristina Yague-Ruiz, Antonio Vercet
Summary: Lowering frying temperature and increasing ingredient slice thickness can effectively reduce oil uptake. Using methyl cellulose and kappa-carrageenan as edible coatings can also reduce oil uptake independently of temperature.
Article
Polymer Science
Wannisa Boonlai, Vimon Tantishaiyakul, Namon Hirun
Summary: Bioinks composed of KC and MC were used for extrusion-based bioprinting, with enhanced physical and mechanical properties achieved through ionic crosslinking and the addition of CNC nanocrystals. The presence of CNC improved shear thinning and thixotropic behavior, leading to better printability and higher compressive mechanical properties. Good cell viability was observed for 3D bioprinted constructs, indicating the potential of the novel hydrogel for bioprinting applications.
POLYMER INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Payal Gupta, Apoorva Goel, Khushboo Rani Singh, Mukesh Kumar Meher, Khushboo Gulati, Krishna Mohan Poluri
Summary: The global antimicrobial crisis and rise of drug-resistant fungal strains have posed challenges to disease management. Biodegradable silver nanoparticles show promise as alternative treatment options. In this study, microwave-irradiated kappa-carrageenan capped AgNps demonstrated anti-biofilm activity against Candida albicans and Candida glabraia, affecting ROS generation, cellular morphology, biochemical composition, and enzyme activity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Microbiology
Xianqin Yang, Frances Tran, Peipei Zhang
Summary: The phylogeny and genetic elements of biofilm forming and nonbiofilm forming E. coli strains from a beef processing environment were investigated. The majority of both groups belonged to phylogroup B1. Comparative genomic analysis revealed a tree-wide spread of biofilm forming strains, with no overrepresented genes or mutations. There was a correlation between biofilm formation and curli production, cellulose synthesis, and motility, but some strains lacked these traits. Additional substrate utilization and iron acquisition were found in the persisting E. coli group.
MICROBIOLOGY SPECTRUM
(2023)
Review
Biochemistry & Molecular Biology
Harinash Rao, Sulin Choo, Sri Raja Rajeswari Mahalingam, Diajeng Sekar Adisuri, Priya Madhavan, Abdah Md. Akim, Pei Pei Chong
Summary: Biofilms play a crucial role in antimicrobial resistance, with their unique physiological state and cell density contributing to increased resistance compared to planktonic counterparts, particularly in fungal biofilms which are less studied. Various biofilm mitigation therapies have been reported, including antimicrobial photodynamic therapy and antimicrobial lock therapy.
Article
Chemistry, Analytical
Giuseppe Brunetti, Donato Conteduca, Mario Nicola Armenise, Caterina Ciminelli
Summary: In the following decades, AMR is expected to become one of the leading causes of death worldwide. Overuse of antibiotics has led to their ineffectiveness, particularly in the presence of bacterial biofilms. A novel optoelectronic device based on optical and electrical measurements has been designed for monitoring the evolution of bacterial biofilms.
Article
Chemistry, Applied
Sangeeta Sankhla, Hafijul Hossain Sardar, Swati Neogi
Summary: The study successfully extracted cellulose micro-fibers and CNF from sugarcane bagasse through a combination of Na2CO3 treatment and IL treatment, demonstrating its efficiency and environmental friendliness.
CARBOHYDRATE POLYMERS
(2021)
Article
Energy & Fuels
Vidhi Gupta, Rakhi Yadav, Rohit Tanwar, Kirtiraj K. Gaikwad
Summary: This work presents the development and characterization of kappa-carrageenan-based bio-nanocomposite films incorporated with cellulose nanocrystals derived from Indian gooseberry pomace. The films exhibited improved barrier and mechanical properties with the addition of CNC, showing decreased water vapor permeability and increased tensile strength. Higher CNC loadings were found to lead to agglomeration, while the addition of CNC increased the crystallinity of the films. The developed bio-nanocomposite films have potential for high-barrier food packaging applications.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Multidisciplinary
Michael S. Reid, Widi Suganda, Emma Ostmark, Anders Brolin, Lars Wagberg
Summary: This study provides insights into the behavior of cellulose films during dewatering and the role of fibrillation and intermolecular forces in the formation of membranes. The results show that increasing pressure and adjusting pH and ionic strength can reduce dewatering time, but also affect the wet and dry mechanical properties.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Katarina Dimic-Misic, Mirjana Kostic, Bratislav Obradovic, Milorad Kuraica, Ana Kramar, Monireh Imani, Patrick Gane
Summary: The cellulose films obtained from refined pulp with different enzymatic pretreatment digestion times were exposed to gas plasma, resulting in surface chemical and morphological changes affecting mechanical and surface properties. Single and dual exposure to oxygen and nitrogen plasma showed differing effects on the roughness, nanostructural and chemical changes, and wettability of the cellulose film. Oxygen plasma induced greater morphological change, while nitrogen plasma contributed more to chemical modification of the film surface.
Article
Agricultural Engineering
Aatikah Meraj, M. Jawaid, Surendra Pratap Singh, Mohamed Mahmoud Nasef, Hidayah Ariffin, M. K. Mohamad Haafiz
Summary: Natural deep eutectic solvents, with their environmentally friendly properties, have gained popularity as effective reagents for lignin removal. In this study, kenaf fiber biomass was treated with a natural deep eutectic solvent, resulting in the extraction of microcrystalline cellulose. Analytical analysis techniques were used to investigate the properties of the extracted cellulose, including infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, particle size distribution analysis, and scanning electron microscopy. The results demonstrated the efficient removal of lignin and partial hemicellulose from the kenaf fiber, as well as the high crystallinity and thermal stability of the microcrystalline cellulose. This study suggests the potential of using microcrystalline cellulose extracted with a natural deep eutectic solvent for various applications in the future.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Energy & Fuels
H. Hadiyanto, Marcelinus Christwardana, Carlito da Costa
Summary: This paper investigates the use of a hybrid Microalgae-Microbial fuel cell to treat wastewater from home-made tapioca industry. The system utilizes native microbes in the wastewater to generate electricity while also producing biomass using microalgae. The results show promising potential for reducing treatment costs, generating renewable bioelectricity, and producing useful microalgae biomass.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Environmental Sciences
H. Hadiyanto, Marcelinus Christwardana, Wahyu Zuli Pratiwi, P. Purwanto, S. Sudarno, Kristinah Haryani, Anh Tuan Hoang
Summary: In this study, suspended and immobilized Saccharomyces cerevisiae yeast in alginate were used as a biocatalyst to optimize the operating conditions of microalgae microbial fuel cell (MMFC) with different concentrations of tofu wastewater. The results showed that immobilized yeast performed better in producing stable electrical output and removing COD compared to suspended yeast. Therefore, the model using immobilized yeast at a concentration of 10.89% w/v and wastewater concentration of 56.94% achieved the best power density and COD removal efficiency.
Article
Electrochemistry
Marcelinus Christwardana, J. Joelianingsih, Linda Aliffia Yoshi
Summary: This study developed a unique 2D-3D anode with high surface area and outstanding electrical conductivity. The results showed that this anode improved the enrichment and growth of yeast and promoted electron transfer in a microbial fuel cell system. Extensive characterization demonstrated that the anode had higher power density and lower internal resistance in MFC applications.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Marcelinus Christwardana, Gerald Ensang Timuda, Nono Darsono, Henry Widodo, K. Kurniawan, Deni Shidqi Khaerudini
Summary: Coating bentonite-Polyvinyl Alcohol (PVA/Bentonite) on carbon felt (CF) improves the performance of yeast Microbial Fuel Cell (MFC), increasing power output and voltage. The concentration of PVA and bentonite affects the development of biofilm on the anode surface.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Agung Nugroho, Agus Wahyudhi, Haryo Satriya Oktaviano, Rike Yudianti, Andri Hardiansyah, Fredina Destyorini, Yuyun Irmawati
Summary: In this study, Fe/N-C electrocatalysts were synthesized and acid leaching successfully removed non-bonded Fe. The deconvolution of Raman spectra showed that higher Fe loading led to the rearrangement of the carbon structure into a more graphitic form, resulting in a decrease of active sites. The cyclic voltammetry test demonstrated that the sample with the optimum iron loading exhibited the best catalytic performance for ORR.
Article
Nanoscience & Nanotechnology
Yuyun Irmawati, Falihah Balqis, Fredina Destyorini, Celfi Gustine Adios, Rike Yudianti, Ferry Iskandar, Afriyanti Sumboja
Summary: In this study, we synthesized N-doped bamboo-like carbon nanofiber-encapsulated cobalt nanoparticles on carbon flakes (Co-N/C fiber) as a bifunctional catalyst, which exhibits high catalytic activity, stability, and applicability to a wide pH range. The Co-N/C fiber demonstrates superior performance in oxygen reduction/evolution reactions in alkaline, neutral, and acidic electrolytes. This research provides an important strategy for developing bifunctional M-N/C catalysts that can be used across a wide pH range.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
Yuyun Irmawati, Bagas Prakoso, Falihah Balqis, Rike Indriyati, Rike Yudianti, Ferry Iskandar, Afriyanti Sumboja
Summary: With the increasing demand for renewable energy diversification, the need for highly active and stable electrocatalysts in all pH ranges is emphasized in electrochemical energy generation and storage systems. This review summarizes strategies to enhance the stability and activity of noble-metal-free nitrogen-doped carbon (M-N/C) as pH-universal oxygen reduction reaction (ORR) electrocatalysts. The ORR mechanism and four strategies including engineering pore structure, adding carbon shell wrapping, introducing multiple nonmetal dopants, and dual metallic active sites are discussed. Future perspectives on the further development and potential applications of M-N/C electrocatalysts are also provided.
Article
Materials Science, Multidisciplinary
Qolby Sabrina, Christin Rina Ratri, Andri Hardiansyah, Titik Lestariningsih, Achmad Subhan, Maria Margaretha Suliyanti, Nurfina Yudasari, Rike Yudianti, Hiroshi Uyama
Summary: A flexible nanofibrous cellulose nanocomposite with great potential as a polymer electrolyte for lithium-ion batteries is synthesized. The flexible porous cellulose forms a three-dimensional network for Li ions mobility in the electrolyte. The composite shows good electrochemical stability and high specific capacity.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Green & Sustainable Science & Technology
H. Hadiyanto, Figa Muhammad Octafalahanda, Jihan Nabilaa, Andono Kusuma Jati, Marcelinus Christwardanab, K. Kusmiyati, Adian Khoironie
Summary: This study investigated the feasibility of anaerobic co-digestion of a mixture of cattle manure and bagasse residue in different weight ratio combinations. The results showed that the combination of 1:5 ratio of bagasse waste to cattle manure obtained the best biogas yield. The kinetic analysis using Gompertz and Logistic models predicted the maximum cumulative biogas at a ratio of 1:5 (cattle: bagasse) at 31,157.66 mL and 30,112.12 mL, respectively.
INTERNATIONAL JOURNAL OF RENEWABLE ENERGY DEVELOPMENT-IJRED
(2023)
Article
Polymer Science
Ngadiwiyana Ngadiwiyana, Merinah Merinah, Damar Nurwahyu Bima, Ismiyarto Ismiyarto, Purbowatiningrum Ria Sarjono, Marelinus Christwardana
Summary: The bacteria-resistant plastic polymer industry is growing rapidly due to promising research on food contamination. Thiol-ene copolymers E3TMBA and E3TAE were synthesized via photopolymerization and possess high thermal stability. They demonstrated mass loss and ash formation at specific temperatures, and showed antibacterial activity against Escherichia coli and Staphylococcus aureus, enhancing their potential in food packaging.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2023)
Article
Electrochemistry
Marcelinus Christwardana, J. Joelianingsih, Linda Aliffia Yoshi
Summary: This study utilizes yeast and glucose oxidase as co-biocatalysts in a single-chamber enzymatic microbial fuel cell to break down sugarcane bagasse waste. Comparing to yeast-only microbial fuel cells, this method increases the open circuit voltage to 0.56 V and the maximum power density by 10.4 times. Furthermore, the technology achieves a 75% reduction in chemical oxygen demand (COD).
JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Nur Vita Permatasari, H. Hadiyanto, Adji Kawigraha, Budi Warsito, Marcelinus Christwardana
Summary: The demand for batteries is increasing as there is a shift from conventional vehicles to electric vehicles. Electric vehicles are being used to reduce CO2 emissions and combat global warming. Proper management of battery waste is crucial to prevent environmental problems and protect human health. Battery recycling not only has environmental benefits but also economic value.
INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
(2023)
Article
Electrochemistry
Marcelinus Christwardana, Deni Shidqi Khaerudini
Summary: Yeast microbial fuel cells (MFCs) are promising devices for energy conversion, utilizing yeast as a biocatalyst to generate electricity. This article presents a scientometric analysis of 148 high-quality publications from 2005 to mid-2022, focusing on the historical research trend related to yeast MFCs. The analysis highlights significant breakthroughs in electrode materials, mediator addition, and in-situ application of yeast MFCs, and reveals the dominance of Asian researchers in this field, particularly from India and South Korea. The findings help researchers navigate the research area and identify key articles, countries, and researchers for potential collaboration.
ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
Satrio Kuntolaksono, Joelianingsih, Linda Aliffia Yoshi, Marcelinus Christwardana
Summary: This bibliometric study uses VOSviewer to evaluate the global research trends in the fields of electrochemical nitrite sensing. The study identifies water pollution, pollution detection, ligands, layered semiconductors, heavy metals, and carbon black as potential hotspots for future research. China, India, and the United States are the most productive countries in this field.
ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY
(2022)
Article
Education, Scientific Disciplines
Marcelinus Christwardana, Sri Handayani, E. Enjarlis, I. Ismojo, R. Ratnawati, J. Joelianingsih, Linda Aliffia Yoshi
Summary: The community service program is an important obligation of Higher Education in Indonesia, contributing to student competence development and faculty-student engagement. It has positive impacts on both students and partners.
EDUCATION FOR CHEMICAL ENGINEERS
(2022)
