Acquisition of a scanning electron microscope for research on the microstructure of agro-industry raw materials, agro-industry products, and biomaterials

• Grant number: 09/53992-5
• Support Opportunities: Multi-user Equipment Program
• Start date: October 01, 2010
• End date: September 30, 2012
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Engineering
• Principal Investigator: Paulo José do Amaral Sobral
• Grantee: Paulo José do Amaral Sobral
• Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
• EMU web page: Página do Equipamento Multiusuário não informada
• Type of equipment: Tipo de Equipamento Multiusuário não informado
• Manufacturer: Fabricante não informado
• Model: Modelo não informado

Abstract

This FAPESP Multi-User Equipment Program request is bolstered by 3 associated projects and 14 complementary projects, all multi-institutional projects, involving research teams at the USP School of Animal Science and Food Engineering, the UNESP, Institute of Biosciences, Literature, and Exact Sciences at São José do Rio Preto, and the USP Ribeirão Preto School of Pharmaceutical Sciences. The objective is to acquire a tabletop scanning electron microscope (SEM), which has low-vacuum, variablepressure operation and therefore does not require a sputter coater. This SEM will be set up in a laboratory on the USP Campus of Pirassununga, which lies between São José do Rio Preto and Ribeirão Preto. An SEM is one of the principal devices for the study of the microstructure of foodstuffs, biopolymers, biomaterials and conventional materials. Particularly in foodstuffs, microstructure is understood as the spatial arrangement of identifiable elements and of their interactions, at scales below 100 µm. The typical microstructural elements in foodstuffs include cells, starch granules, proteins, water droplets, oil globules, lipid crystals, and gas bubbles. Some of these elements can be observed in biomaterials, edible films and microencapsulated products, being directly related to their physical properties. Although this will be the first SEM on the Pirassununga Campus of USP, some members of the team have experience with this type of microscopy, as well as having published various articles based on results obtained with equipment located in other cities. This SEM will be employed in studying the microstructure of beef, fish, milk (fresh or powdered), microencapsulated and nanoencapsulated products, dehydrated vegetable extracts, starch, vegetable tissues, biodegradable films, membranes, cement products and material for the treatment of residues (biofilms). One associated project and various complementary projects did not presuppose microstructural analyses. Therefore, the acquisition of the SEM will make it possible to obtain new data, which could lead to new pproaches, consequently having a quite positive impact on the publication of articles in international journals. In the case of the other projects, these analyses could be made with greater frequency and at a lower cost. Making the SEM available to the professors will allow them to make observations that are more detailed and to have access to results other than those furnished by the technicians running the equipment. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CORONADO JORGE, MANUEL FERNANDO; CAICEDO FLAKER, CHRISTIAN HUMBERTO; NASSAR, SAMIRA FERNANDES; FREITAS MORAES, IZABEL CRISTINA; QUINTA BARBOSA BITTANTE, ANA MONICA; DO AMARAL SOBRAL, PAULO JOSE. Viscoelastic and rheological properties of nanocomposite-forming solutions based on gelatin and montmorillonite. Journal of Food Engineering, v. 120, p. 81-87, JAN 2014. (09/53992-5, 11/15784-1)