Sérgio Akinobu Yoshioka

ORCID: 0000-0003-0016-733X
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Silk-based biomaterials and applications
  • Electrospun Nanofibers in Biomedical Applications
  • Enzyme Catalysis and Immobilization
  • Bone Tissue Engineering Materials
  • Electrochemical sensors and biosensors
  • Enzyme Production and Characterization
  • Craniofacial Disorders and Treatments
  • Collagen: Extraction and Characterization
  • Dental materials and restorations
  • Science and Education Research
  • Multicomponent Synthesis of Heterocycles
  • Microplastics and Plastic Pollution
  • Anesthesia and Neurotoxicity Research
  • Cardiac Valve Diseases and Treatments
  • Insect Utilization and Effects
  • Flavonoids in Medical Research
  • Agricultural and Food Sciences
  • Pesticide and Herbicide Environmental Studies
  • Aquaculture Nutrition and Growth
  • Cleft Lip and Palate Research
  • Chemical synthesis and alkaloids
  • Characterization and Applications of Magnetic Nanoparticles
  • Science and Science Education
  • Calpain Protease Function and Regulation
  • Synthesis of Tetrazole Derivatives

Universidade de São Paulo
1998-2023

Universidade Federal de São Carlos
2017-2023

Universidade Federal do Amapá
2021

Hospital Universitário da Universidade de São Paulo
2021

Biomatériaux et Bioingénierie
2017

Instituto de Psicologia Comportamental de São Carlos
2017

Pontifícia Universidade Católica de Minas Gerais
2008-2016

Universidade Brasil
2012

Amano lipase from <italic>Pseudomonas fluorescens</italic> immobilized on silk fibroin spheres and used in the enzymatic kinetic resolution of halohydrins, to obtain optically active epoxides, important precursors synthesis antifungal azoles.

10.1039/c7ra00083a article EN cc-by-nc RSC Advances 2017-01-01

Composites of magnetite nanoparticles encapsulated with polymers attract interest for many applications, especially as theragnostic agents magnetic hyperthermia, drug delivery, and resonance imaging. In this work, were synthesized by coprecipitation different (Eudragit S100, Pluronic F68, Maltodextrin, surfactants) nano spray drying technique, which can produce powders from solutions or suspensions. Transmission scanning electron microscopy images showed that the bare have 10.5 nm, after...

10.3390/ma15051755 article EN Materials 2022-02-25

Abstract This article reports on an evaluation of the physical, chemical, thermal, morphological, and thermomechanical behavior silk fibroin (SF) films conducted by a casting process with formic acid as solvent. Thin SF without glycerol were produced two different methods, namely M1, from degummed SF, M2, after degumming, dissolution, dialysis, centrifuge, freeze‐drying SF. According to results, those fabricated M1 are thinner addition increased their thickness. All showed high‐surface area...

10.1002/app.50759 article EN Journal of Applied Polymer Science 2021-03-27

Background: Biodiesel has been shown to be effectively produced by immobilized enzymatic catalysts. The selection of support material is a prominent factor for obtaining an efficient lipase. Silk fibroin (SF) natural polymer glands some arthropods, especially the Bombyx mor, attracting attention immobilization Objective: This paper presents novel method obtain silk microfibers (SMF) from Oxone® salt in water, used as Amano AK lipase Pseudomonas fluorescens biodiesel production deodorization...

10.2174/2211544710666210401111704 article EN Current Catalysis 2021-04-02

This work describes the results of controlled crosslinking collagen matrices by glutaraldehyde based on a double protection strategy, acetals and lysine protonation due to acidic conditions acetal formation. Materials crosslinked this approach were characterized thermal stability comparable those obtained conventional procedures with mechanical properties expected for bioprosthesis manufacture higher toward collagenase hydrolysis. The integrity microfibrillar structure was confirmed optical...

10.1046/j.1525-1594.1998.06006.x article EN Artificial Organs 1998-03-01

Polymeric particles loaded with biocompatible magnetic nanoparticles are promising platforms to perform therapy and diagnostic of diseases, acting as the so called theranostic agents. In this work, magnetite were synthesized by coprecipitation method encapsulated Polycaprolactone (PCL) Poloxamer 188 polymers through innovative Nano Spray Drying technique. X-Ray Diffraction Infrared Spectroscopy confirmed that formed composed PCL, magnetite, amount determined 3% Thermogravimetric Analysis....

10.5923/j.nn.20160604.03 article EN Nanoscience and Nanotechnology 2016-08-01

In this communication results of a fuel cell operating with conventional platinum anode and peroxidase based biochatode are presented. The biocathode was prepared extracted from vegetal tissue brazilian zucchini, Cucurbirta pepo, via four different methods. biomaterial used either immobilized or adsorbed on carbon cloth powder. tests were carried out at 25 °C in proton exchange membrane cell, which cathode fed oxygen hydrogen, respectively. crude extract zucchini (Cucurbirta pepo) as source...

10.1016/s1452-3981(23)17065-9 article EN cc-by-nc-nd International Journal of Electrochemical Science 2007-02-01

Background: The advantages of microwave (MW)-assisted chemistry reactions have led several research groups to apply this technique the optimization synthetic processes and preparation new compounds. This focuses on Knoevenagel condensation with additives supported natural fibers (Fibroin Kapok) under MW. Keywords: Biocatalysis, 2-benzylidenemalonitrile, fibroin, green chemistry, condensation, radiation.

10.2174/2213335603666160809121421 article EN Current Microwave Chemistry 2016-08-25

This work assessed the bioremediation of herbicide Velpar K®, in vitro aqueous solution, used against weeds sugar cane São Paulo state. The contained Hexazinone and Diuron. It was microbial inoculant denominated Effective Microorganisms (EM-4), pool microorganisms from soil that lactic photosynthetic bacteria, fungi, yeasts actinomycetes for bioremediation. Results depth cultivation on agar-agar inoculated with EM-4 showed growth concentrations between 0.2% 1.0% K®in gel. analysis high...

10.1590/s1516-89132012000100018 article EN cc-by-nc Brazilian Archives of Biology and Technology 2012-02-01

New materials from silk fibroin (FS-Ox) and chitin (CT-Ox) functionalized with Oxone® salt were developed for application in the synthesis of Knoevenagel adducts. The experiments performed using benzaldehyde derivatives, malononitrile, a mixture water ethanol as green solvents. efficiency conventional microwave irradiation heating sources this reaction was also investigated. When reactions 60 min under optimized conditions heating, twelve adducts 2a–l obtained, good yields both catalysts...

10.3390/catal12080904 article EN Catalysts 2022-08-17

The foundation of the modern life is based on energy generation. As metropolitan regions have become over time more populous, private and public companies started to research renewable sources. In order follow such demand new computer techniques had be developed. This paper presents a framework, SolarEnergy, which aims assist developer in project components simulation solar applications. basic idea related framework. It helps development similar applications encapsulates business rules...

10.1109/indin.2008.4618299 article EN 2008-07-01

Wound healing is a complex biological process. In this context, hyaluronic acid (HA) plays an important role in all phases of wound healing, from inflammation to the remodelling Nevertheless, its presence adults decreases by 50% compared newborns, which drastically reduces tissue regeneration. sense, work presented new method extracting HA chicken combs, as well development and vivo evaluation ointment composed vaseline, lanolin 1% (w/w) for healing. The rheological analysis showed that...

10.1080/09205063.2022.2068946 article EN Journal of Biomaterials Science Polymer Edition 2022-04-22

Abstract Baicalein (BA) is a flavonoid with wide-ranging pharmacological activity. However, its biological evaluation hampered by low solubility in aqueous medium, making forms of incorporation that improve necessary. In the present study, BA was combined solution silk fibroin protein (SF), biomaterial used as drug carrier, to evaluate anti-inflammatory potential this combination, vivo, an experimental model, zebrafish ( Danio rerio ). Baicalein-Silk (BASF) improved DPPH...

10.21203/rs.3.rs-1688655/v1 preprint EN cc-by Research Square (Research Square) 2022-06-22

This paper describes a case study about Stratified Adaptive Test, based on the tacit knowledge of professor, in two classes Computer Network. After answering five exercises, data were collected from student's motivation. Thus, we sought for correlation between motivation factors, besides clustering our samples by performance to identify some specific behavior. Our results present Interest and three another factors: Probability Sucess, Challenge Dedication Time. Besides that, found benefits...

10.5753/cbie.sbie.2016.966 article EN Anais do ... Simpósio Brasileiro de Informática na Educação/Anais do Simpósio Brasileiro de Informática na Educação 2016-11-07
Coming Soon ...