ESPERIDIANA AUGUSTA BARRETOS DE MOURA

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Graduated in Chemical Engineering at Faculdade Oswaldo Cruz (1983), Master in Nuclear Technology - Applications at IPEN / USP (1999), Ph.D. in Nuclear Technology - Applications at IPEN / USP (2006) and Post-Doctorate at Center for Advanced Materials ( T-CAM) from Tuskegee University, AL, USA. The main lines of research are: Synthesis of metallic nanoparticles; Obtaining and characterization of nanoparticles from mineral activity and agroindustry residues; Micro and nanofiller functionalization; Synthesis and reduction of graphene oxide; Development and modification of composite materials based on conventional and biodegradable polymers with vegetable fibers, micro and nanofillers of renewable origin; Development of biodegradable, active and intelligent plastic packaging for food, cosmetics, medical and pharmaceutical products; Development of conductive polymeric materials; Development of biomaterials for application in the regeneration of bone and dental tissue. (Text obtained from the CurrĆ­culo Lattes on October 8th 2021)


Possui graduaĆ§Ć£o em Engenharia QuĆ­mica pela Faculdade Oswaldo Cruz (1983), mestrado em Tecnologia Nuclear ? AplicaƧƵes pelo IPEN/USP (1999), doutorado em Tecnologia Nuclear ? AplicaƧƵes pelo IPEN/USP (2006) e PĆ³s-Doutorado no Center for Advanced Materials (T-CAM) da Tuskegee University, AL, USA. As principais linhas de pesquisa sĆ£o: SĆ­ntese de nanopartĆ­culas metĆ”licas; ObtenĆ§Ć£o e caracterizaĆ§Ć£o de nanopartĆ­culas a partir de resĆ­duos da atividade mineral e da agroindĆŗstria; FuncionalizaĆ§Ć£o de micro e nanocargas; SĆ­ntese e reduĆ§Ć£o de Ć³xido de grafeno; Desenvolvimento e modificaƧao de materiais compĆ³sitos baseados em polĆ­meros convencionais e biodegradĆ”veis com fibras vegetais, micro e nanocargas de origem renovĆ”vel; Desenvolvimento de embalagens plĆ”sticas biodegradĆ”veis, ativas e inteligentes para alimentos, cosmĆ©ticos, produtos mĆ©dicos e farmacĆŖuticos;Desenvolvimento de materiais polimĆ©ricos condutores; Desenvolvimento de biomateriais para aplicaĆ§Ć£o na regeneraĆ§Ć£o de tecidos Ć³sseos e dentĆ”rios. (Texto extraĆ­do do CurrĆ­culo Lattes em 08 out. 2021)

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    Artigo IPEN-doc 29053
    A residue-free and effective corncob extrusion pretreatment for the enhancement of high solids loading enzymatic hydrolysis to produce sugars
    2022 - JOSE, ALVARO H.M.; MOURA, ESPERIDIANA A.B.; RODRIGUES JUNIOR, DURVAL; KLEINGESINDS, EDUARDO K.; RODRIGUES, RITA C.L.B.
    To convert biomass into biofuel, pretreatment is the first stage required to de-structure lignocellulose ā€“ twin-screw extrusion is one of the viable pretreatment technologies. The enzymatic hydrolysis of corncobs pretreated with twin-screw extrusion to obtain sugar was evaluated. Corncob extrusion (115ā€“130 Ā°C; 14 rpm) was enhanced through the employment of additives (water and glycerol, 25:25, % w/w). By reproducing the response surface methodology (RSM) technique, the maximized glucose productivity (0.69 g Lāˆ’1 hāˆ’1) and conversion of cellulose to glucose (90.4 % w/w), as well as hemicellulose to xylose and arabinose (44.0 % w/w) were established with the dosage of the commercial enzymatic complex Cellic Ctec2 (32 FPU/gdry lignocellulosic material) and solids loading (17.8 % w/w). Total sugar yield was of 471 kg (glucose 323 kg; xylose and arabinose 148 kg) for a dried corncob ton. Kinetic constants of the Michaelis-Menten model, Vmax and Km, for converting cellulose to glucose were of 6.00 % (w/w)/h and 22.59 gcellulose/Lsolution, respectively. A residue-free and effective corncob extrusion pretreatment enhanced high solids loading enzymatic hydrolysis to achieve a glucose-rich solution.