Article
Biochemistry & Molecular Biology
Robson C. Alnoch, Gabriela S. Alves, Jose C. S. Salgado, Diandra de Andrades, Emanuelle N. de Freitas, Karoline M. V. Nogueira, Ana C. Vici, Douglas P. Oliveira, Valdemiro P. Carvalho-Jr, Roberto N. Silva, Marcos S. Buckeridge, Michele Michelin, Jose A. Teixeira, Maria de Lourdes T. M. Polizeli
Summary: In this study, the immobilized recombinant endo-1,4-beta-xylanase of Malbranchea pulchella (MpXyn10) was evaluated for its potential in producing xylooligosaccharides (XOS) from hydrothermal liquor. The immobilized MpXyn10 derivatives showed high stability and maintained high levels of residual activity, making them suitable for the production of high purity XOS.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Gil Sander Prospero Gama, Alexandre Santos Pimenta, Francisco Marlon Carneiro Feijo, Caio Sergio Santos, Bruno Caio Chaves Fernandes, Moacir Franco de Oliveira, Elias Costa de Souza, Thays V. C. Monteiro, Maira Fasciotti, Tatiane Kelly Barbosa de Azevedo, Rafael Rodolfo de Melo, Ananias Francisco Dias Junior
Summary: The antibacterial and antifungal action of two types of wood vinegar (Eucalyptus urograndis and Bambusa vulgaris) was evaluated, and their chemical profiles were determined. Both types of wood vinegar exhibited significant antimicrobial activity, with the bamboo vinegar being more effective. GC/MS analysis showed that the chemical compositions of the two wood vinegars were similar but with some significant differences.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Microbiology
Bismark Alves da Silva, Francisco Marlon Carneiro Feijo, Nilza Dutra Alves, Alexandre Santos Pimenta, Leon Denner Moreira Benicio, Enilson Claudio da Silva Junior, Caio Sergio Santos, Alexsandra Fernandes Pereira, Yasmin Beatriz Franca Moura, Gil Sander Prospero Gama, Evilasio de Souza Lima Neto
Summary: Bovine mastitis is a common disease in dairy cattle, and the use of eucalyptus wood vinegar as an antiseptic has been shown to effectively reduce the microbial load in mammary glands. The wood vinegar exhibited antimicrobial activity against various bacteria and showed no cytotoxicity. This study suggests that eucalyptus wood vinegar has the potential to be used as an antiseptic for treating bovine mastitis.
VETERINARY MICROBIOLOGY
(2023)
Article
Biology
Ahmed M. Saad, Mohamed T. El-Saadony, Amira M. El-Tahan, Samy Sayed, Moataz A. M. Moustafa, Ayman E. Taha, Taha F. Taha, Mahmoud M. Ramadan
Summary: This study utilized polyphenol-rich agricultural waste extracts for silver nanoparticles synthesis and evaluated their larvicidal activity against different instars of Spodoptera littoralis. The results showed that silver nanoparticles with increased polyphenol content exhibited enhanced antioxidant and antimicrobial activities, with PPAgNPs being most effective against first instar larvae.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Sakkarin Lethongkam, Supakit Paosen, Siwaporn Bilhman, Krittima Dumjun, Suttiwan Wunnoo, Suntree Choojit, Ratchaneewan Siri, Chalongrat Daengngam, Supayang P. Voravuthikunchai, Tanan Bejrananda
Summary: A Foley urinary catheter coated with synthesized silver nanoparticles was developed to inhibit microbial adhesion and biofilm formation, reducing the risk of catheter-associated urinary tract infections.
Article
Agricultural Engineering
Rongrong Liu, Yushuai Sun, Fansheng Meng, Yueping Wang, Feifan Zhai, Qun Li
Summary: This study investigates the effects of hemicellulose pre-extraction on the viscoelasticity of wood cell wall, energy efficiency, and product properties in chemi-mechanical pulping process. The results show that removal of hemicellulose reduces wood storage modulus and refining energy consumption, while promoting fiber surface fibrillation. This study provides a feasible and efficient method to reduce refining energy without scarifying fiber quality, holding promise for advanced and greener biorefineries.
BIOMASS & BIOENERGY
(2023)
Review
Chemistry, Physical
Lavinia Berta, Nastaca-Alina Coman, Aura Rusu, Corneliu Tanase
Summary: The study of bimetallic nanoparticles (BNPs) has been rapidly expanding, with a focus on biosynthesis through natural extracts for their simplicity, low cost, and environmental friendliness. Noble bimetallic NPs show promise for biomedical applications and have significant impacts on human health. There is a lack of review papers on plant-mediated BNPs in the literature, which inspired this effort to provide a comprehensive perspective on their synthesis and applications.
Article
Energy & Fuels
Florencia Cebreiros, Florencia Risso, Matias Cagno, Maria Noel Cabrera, Eloisa Rochon, Guillermo Jauregui, Elzeario Boix, Silvia Bothig, Mario Daniel Ferrari, Claudia Lareo
Summary: This study investigated the co-production of xylosaccharides and butanol from Eucalyptus grandis wood using steam explosion pretreatment. Steam explosion led to high xylan recovery as xylooligosaccharides and achieved efficient glucan enzymatic hydrolysis. Strains Clostridium beijerinckii DSM 6422 and Clostridium beijerinckii DSM 6423 were identified as robust native strains for butanol production from lignocellulosic materials in this study.
Article
Chemistry, Multidisciplinary
Jacqueline Torres-Liminana, Ana A. Feregrino-Perez, Marina Vega-Gonzalez, Luis Escobar-Alarcon, Jose Antonio Cervantes-Chavez, Karen Esquivel
Summary: This study successfully synthesized silver-titanium dioxide (Ag-TiO2) materials using Eucalyptus globulus extract as a reductive agent. The materials exhibited excellent antimicrobial and photocatalytic properties, making them a green option for water disinfection.
Article
Biochemistry & Molecular Biology
Fatimah Al-Otibi, Shahad K. Alkhudhair, Raedah Alharbi, Abdulaziz A. Al-Askar, Reem M. Aljowaie, Sameha Al-Shehri
Summary: The study tested the antibacterial and antifungal activities of grape seed extract and silver nanoparticles loaded with grape seed extract against different pathogens. The results showed significant antimicrobial activities of GSE-AgNPs against various species, unlike GSE which had weaker effects. Further research is needed to investigate the other antimicrobial activities of GSE.
Article
Environmental Sciences
Igor Yannick das Neves Vasconcellos Branda, Erenilda Ferreira de Macedo, Pedro Henrique Barboza de Souza Silva, Aline Fontana Batista, Sergio Luis Graciano Petroni, Maraisa Goncalves, Katia Conceicao, Eliandra de Sousa Triche, Dayane Batista Tada, Danielle Maass
Summary: The biosynthesis of copper nanoparticles using Rhodococcus erythropolis and pre-processed mining tailings as a precursor was studied. The effects of pulp density and stirring rate on particle size were evaluated. The results showed that copper nanoparticles with an average hydrodynamic diameter of 21±1 nm can be synthesized using 25 g.L-1 of mining tailings and a stirring rate of 250 rpm.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Materials Science, Paper & Wood
Qifeng Chen, Liting Wei, Yanping Lai, Yayun Liu
Summary: In this study, green composite starch films were prepared using tea polyphenols-chitosan-based nanoparticles as active agent and nanocellulose as strength agent. The films exhibited good mechanical and antioxidant activities, making them suitable for food packaging.
Review
Chemistry, Physical
Xuanjun Hu, Chao Lu, Howyn Tang, Hossein Pouri, Etienne Joulin, Jin Zhang
Summary: Food packaging plays a crucial role in protecting and preserving food. Conventional packaging made of non-biodegradable plastics derived from fossil fuels has a negative impact on the environment. Natural biopolymers offer a sustainable alternative due to their abundance and eco-friendly properties. This review discusses the use of natural biopolymers as matrices for food packaging, highlighting their antioxidant, water barrier, and oxygen barrier properties. Additionally, the integration of antimicrobial agents in biopolymer-based composites is explored, with a focus on inhibiting microbial growth and maintaining food quality.
Article
Biochemistry & Molecular Biology
Andreas K. Rossos, Christina N. Banti, Panagiotis K. Raptis, Christina Papachristodoulou, Ioannis Sainis, Panagiotis Zoumpoulakis, Thomas Mavromoustakos, Sotiris K. Hadjikakou
Summary: Eucalyptus leaves and willow bark extracts were utilized to form silver nanoparticles which were dispersed in polymer hydrogels, showing potential antimicrobial properties against bacteria involved in microbial keratitis.
Article
Pharmacology & Pharmacy
Suttiwan Wunnoo, Siwaporn Bilhman, Tassanai Waen-ngoen, Suraiya Yawaraya, Supakit Paosen, Sakkarin Lethongkam, Nattha Kaewnopparat, Supayang P. Voravuthikunchai
Summary: A thermosensitive hydrogel containing biosynthesized silver nanoparticles was developed as an efficient anti-biofilm agent for tissue infection treatment. The formulation demonstrated broad-spectrum antimicrobial activity and comparable effects with existing antibiotics. Additionally, the formulation showed good antioxidant and anti-inflammatory properties.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
S. Sandeep, K. L. Nagashree, T. Maiyalagan, G. Keerthiga
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Medicinal
S. S. Godipurge, J. S. Biradar, N. J. Biradar, H. P. Shivarudrappa, S. Yallappa, B. S. Hungund, K. Sreedhara Ranganath Pai
CHEMISTRY OF NATURAL COMPOUNDS
(2018)
Article
Engineering, Electrical & Electronic
B. M. Harish, B. S. Avinash, V. S. Chaturmukha, H. S. Jayanna, Ashok R. Lamani, S. Yallappa
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2018)
Article
Electrochemistry
S. Yallappa, M. Shivakumar, K. L. Nagashree, M. S. Dharmaprakash, Ajayan Vinu, Gurumurthy Hegde
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Physics, Multidisciplinary
S. B. Patil, H. S. Bhojya Naik, G. Nagaraju, Yallappa Shiralgi
EUROPEAN PHYSICAL JOURNAL PLUS
(2018)
Article
Engineering, Chemical
Roopa Hegde, Koona Ramji, Swapna Peravali, Yallappa Shiralgi, Gurumurthy Hegde, Lavakumar Bathini
ADVANCES IN POLYMER TECHNOLOGY
(2019)
Article
Electrochemistry
K. N. Nithyayini, M. N. K. Harish, K. L. Nagashree
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Multidisciplinary
M. Shivakumar, M. S. Dharmaprakash, S. Manjappa, K. L. Nagashree
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2020)
Article
Engineering, Electrical & Electronic
D. M. Chethana, T. C. Thanuja, H. M. Mahesh, M. S. Kiruba, H. C. Barshilia, S. Yallappa, J. Manjanna
Summary: Fe2O3-In2O3 (9:1 mol.%) heterostructure nanoparticles were prepared by thermal decomposition method, showing ferromagnetic properties and H2 gas-sensing properties. The sample was characterized using various techniques, revealing response and recovery times, sensitivity, and other performance metrics for hydrogen gas detection.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
B. M. Basavaraja Patel, M. Revanasiddappa, S. Yallappa, D. R. Rangaswamy
Summary: The study prepared polypyrrole/iron nanoparticles (PPy/Fe) and tellurium oxide (TeO2) nanocomposites (PPy/Fe@TeO2) through in situ polymerization using green tea extract as a reducing and stabilizing agent. The nanocomposites exhibited desirable properties including AC, DC, and EMI shielding capabilities. The materials have the potential to be used in various electronic applications such as biosensors and battery applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
K. Arathi, T. N. Ravishankar, Kalyan Raj, K. L. Nagashree
Summary: Cobalt sulfide nanoparticles show effective catalytic reduction capability for hexavalent chromium, converting it to non-toxic trivalent chromium. Under pH 2 in sulfuric acid, the reduction of 50 ppm Cr(VI) with 1.5 g/L catalyst is completed within 16 minutes with an efficiency of around 99.63%. However, the activity of the catalyst decreases after 17 cycles of use.
Proceedings Paper
Materials Science, Multidisciplinary
B. S. Hungund, S. G. Umloti, K. P. Upadhyaya, J. Manjanna, S. Yallappa, N. H. Ayachit
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
S. Yallappa, Kiran S. R. Kumar, K. L. Nagashree, Uma, M. Bhargavi, C. N. Rakshitha, D. Aneetta, Abhinethri, P. Mrinasha, Gurumurthy Hegde
MATERIALS TODAY-PROCEEDINGS
(2018)
Article
Toxicology
Roopa Gaonkar, Yallappa Shiralgi, Dhananjaya B. Lakkappa, Gurumurthy Hegde
TOXICOLOGY REPORTS
(2018)
Article
Biotechnology & Applied Microbiology
Thore Bach Thomsen, Tobias S. Radmer, Anne S. Meyer
Summary: Plastic pollution, particularly from PET, is a significant environmental challenge. This study investigates the enzyme kinetics of PET degradation and finds that the degree of crystallinity (X-C) has a substantial impact on the enzymatic reaction rate. The mobile amorphous fraction (X-MAF) is a better descriptor for the rate of enzymatic degradation. The longer lag phase observed with increased X-C is proposed to be due to increased substrate entanglement density and unproductive enzyme binding to the crystalline regions of PET.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Purna Bahadur Poudel, Dipesh Dhakal, Jong Cheol Lee, Jae Kyung Sohng
Summary: Methylation plays important roles in various biological processes, and this study characterized the function of ThnM3 in regioselective modifications of 1,8-dihydroxynaphthalene.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Feng Song, Ivan Birukou, Mark Bednarcik, Scott Young
Summary: In this study, a highly sensitive and specific method using ultra performance liquid chromatography (UPLC) was developed to measure the enzymatic activity of APH4 in plants. The method exhibited good precision and accuracy, and was validated for use with samples from different sources.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Yuan Rao, Wei Zhuang, Jinle Liu, Ting Tang, Zhi Wang, Hanjie Ying
Summary: This study describes a mild and versatile strategy to immobilize glucose oxidase (GOD) on carboxyl-activated metal-organic framework (MOF) through DNA-directed immobilization technology. The immobilized GOD showed enhanced stability and catalytic activity, making it a potential candidate for applications in biocatalysis and biotechnology.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Julen Ordenana Manso, Martin B. Nielsen, Eva Balaguer Moya, Juliana P. Sandri, Celina K. Yamakawa, Solange I. Mussatto
Summary: This study focuses on the development of an enzymatic cocktail for the conversion of corn fiber into monosaccharides. The results reveal that the recalcitrance and unique chemical composition of corn fiber require a tailored enzymatic cocktail for degradation, and attention should also be given to the pretreatment step.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Cuixia Zhou, Guangcheng Yang, Panpan Meng, Weishuai Qin, Yanyan Li, Zhenxian Lin, Wei Hui, Huitu Zhang, Fuping Lu
Summary: Bacillus licheniformis 2709 is an important industrial producer of alkaline protease (AprE), and this study identified the UP elements of the aprE gene and demonstrated the lack of significant effect of CggR, FruR, and YhcZ transcription factors on aprE expression. Enhanced aprE expression and enzyme activity were achieved by deleting a negative regulatory factor binding site in the genome. These findings provide valuable insights into the high-level production of proteins in other Bacillus species.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Xinqi Xu, Tianheng Chen, Lian Xu, Juan Lin
Summary: In this study, laccase was immobilized on modified magnetic nanoparticles, improving the enzyme's thermostability and efficiency for polymerization of phenols.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Handan Ustukarci, Gul Ozyilmaz, Ali Tuncay Ozyilmaz
Summary: A biofilm layer called biofouling is formed over time by organic molecules and microorganisms on solid surfaces immersed in a liquid medium. This study focused on the antifouling performance of polyaniline (PANI) and investigated the immobilization of hydrolytic enzymes in PANI coatings. The results showed that the alpha-amylase-containing film exhibited the highest antifouling activity. Surface properties and biofilm composition were analyzed to support these findings.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Mariana Ortiz-Sanchez, Juan Camilo Solarte-Toro, Pablo Jose Inocencio-Garcia, Carlos Ariel Cardona Alzate
Summary: This study evaluated the sustainability of biorefineries using orange peel as a raw material. By applying the concept of biorefineries and experimental data, it was found that steam distillation and polyphenolic compound extraction can improve the process performance, resulting in higher yields of different products. The integrated utilization of orange peel in biorefineries showed a high sustainability index.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
