A5070237522- Enzyme Catalysis and Immobilization
- Electrochemical sensors and biosensors
- Enzyme-mediated dye degradation
- Agricultural and Food Sciences
- Microbial Metabolic Engineering and Bioproduction
- Ionic liquids properties and applications
- biodegradable polymer synthesis and properties
- Dye analysis and toxicity
- Electrochemical Analysis and Applications
- Analytical Chemistry and Chromatography
- Spectroscopy and Chemometric Analyses
- Enzyme Production and Characterization
- Biofuel production and bioconversion
- Food Chemistry and Fat Analysis
- Advanced Nanomaterials in Catalysis
- Chemical and Physical Properties in Aqueous Solutions
- Electrospun Nanofibers in Biomedical Applications
- Sugarcane Cultivation and Processing
- Mesoporous Materials and Catalysis
- Research on Leishmaniasis Studies
- Tailings Management and Properties
- Graphene and Nanomaterials Applications
- Phytochemistry Medicinal Plant Applications
- Bee Products Chemical Analysis
- Pineapple and bromelain studies
Universidade Federal da Bahia
2021-2025
Instituto de Tecnologia e Pesquisa
2013-2022
Nanomed (Brazil)
2021-2022
Universidade Tiradentes
2013-2022
Universidade Federal do Rio de Janeiro
2006
The objective of this work was to evaluate the influence dichloromethane (CH2Cl2), potassium hydroxide (KOH) and phosphoric acid (H3PO4) in treatment biochar from guava seeds on conventional non-conventional techniques (ultrasound microwave) for immobilization Burkholderia cepacia lipase (BCL) by physical adsorption. effects different treatments chemical properties were evaluated scanning electron microscopy (SEM) Fourier transform infrared spectroscopy (FTIR). BCL hydrolysis reactions olive...
This review aims to analyze the technological and scientific applications regarding cocoa fermentation through a prospective study of patent documents research articles. The Espacenet database was used as tool by searching both IPC code “A23G1” terms “cocoa” “ferment*”. A total 130 were found—49 related subject. Scopus also searched for articles using “fermentation”. 812 found—517 Cocoa has not yet reached maturity, despite growth in observed last two decades. creation Cacao Excellence...
This work describes the development of a method for extraction methylxanthines from cocoa bean shell (CBS) by employing novel Energized Dispersive Guided Extraction (EDGE) system. The mixtures were composed ethanol-methanol-water and ratio was optimized using simplex-centroid design. Doehlert design (DD) used to optimize variables temperature time while methylxanthine content obtained HPLC-DAD as an analytical response. mixture consisted water-ethanol in 3:2 ratio. optimum operating...
Abstract Guava seed biochar appears as a new alternative of the effective support to immobilization Burkholderia cepacia lipase (BCL) by physical adsorption. The objective this work was evaluate potential immobilized biocatalyst in transesterification reaction crude coconut oil and ethanol understand mechanism through study molecular docking. best loading BCL determined be 0.15 g enzyme /g having hydrolytic activity 260 U/g 54% yield. products produced maximum yield at 40 °C under different...
IMMOBILIZATION OF HORSERADISH PEROXIDASE ON SUGARCANE BAGASSE.The immobilization of horseradish peroxidase (HRP) on raw and alkaline pre-treated sugarcane bagasse by physical adsorption (ADS) covalent bond (LC) methods was studied.The saturation the support with 2 mg HRP/g LC reached 35% efficiency 39 units immobilized enzyme (U).Regarding HRP without pretreatment using same loading, it observed a reduction in number for both methods, ADS (13.98% 15.46 U) (15.79% 17.46 U).The experiment,...
Abstract BACKGROUND The objective of this work was the development silver nanoparticles (AgNPs) coated with humic acid (HA) and their incorporation into an enamel for antifungal activity. AgNPs were synthesized by chemical reduction using sodium borohydride as a reducing agent HA. Uncoated control. HA‐AgNPs characterized ultraviolet–visible spectrophotometry, differential scanning calorimetry, dynamic light scattering, Fourier‐transform infrared spectroscopy (FTIR), atomic force microscopy...
A novel experimental procedure to obtain carbonyl compounds under microwave irradiation from activated olefins and supported iodobenzene diacetate is described. By varying the reaction conditions it possible generate corresponding aldehydes in reasonable-to-excellent yields selectivities. The methodology simple, clean, reproducible presents short times. Using isosafrol, isoeugenol, anethol was produce piperonal, vanillin p-anisaldehyde, respectively.
Mesoporous silica supports (aerogels) were used to immobilize Burkholderia cepacia lipase (BC) by encapsulation (EN or ENIL), physical adsorption (ADS ADSIL) and covalent binding (CB CBIL) into onto the aerogel modified with protic ionic liquid (PIL).Yield immobilization (Ya) operational stability determined hydrolytic reaction of olive oil.Ya (37% 83% adsorption) (2 23 batches encapsulation) increased when support was PIL.For immobilized derivates observed BET method, in this case ADS CB...
Isopentyl caffeate (ICaf) is a bioactive ester widely distributed in nature. Our patented work has shown promising results of this molecule against Leishmania. However, ICaf shows poor solubility, which limits its usage clinical settings. In work, we have proposed the development an inclusion complex β-cyclodextrin (β-CD), with aim to improve drug and thus, bioavailability. The (ICaf:β-CD) was developed applying three distinct methods, i.e., physical mixture (PM), kneading (KN) or...
BACKGROUND This work aims to assess the use of protic ionic liquids (PIL), propanoate, butanoate and pentanoate N-methylmonoetanolamine (C3, C4 C5), in preparation hybrid supports made poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV) silica for immobilization lipase Burkholderia cepacia (BCL) by covalent binding. For immobilized biocatalysts (IBs), performance was determined characterization (pH, temperature, stability thermal, operational solvents), with best conditions being defined....