IAEA-CN-115-37 · Effect of Ionizing Radiation on Tilapia (Oreochromis niloticus) Protein Biofilms

S.F. Sabato¹, N. Nakamurakare², P.J. Sobral²

¹Radiation Technology Center, IPEN-CNEN/SP, Av. Lineu Prestes, 2242, 05508-900 - São Paulo, SP, Brazil.
²Food Engineering Department, ZEA/FZEA/USP, Av. Duque de Caxias Norte, 225, 13635- 900 - Pirassununga, SP, Brazil.

Abstract: New alternatives to traditional packaging have considered the use of renewable sources as raw material to form films including proteins. In this paper we used myofibrillar protein from Nile Tilapia (Oreochromis niloticus), that in our country, is commercialized at competitive prices comparative to these practiced in developing country. The films were prepared according a casting technique with two levels of plasticizer: 25% and 45% glycerol. The films were irradiated in electron accelerator type Radiation Dynamics, 1.5MeV at dose range from 0kGy to 200kGy. The samples were kept at 25ºC and 58% relative moisture until the analysis. The main properties studied were color, opacity, solubility, and mechanical properties.

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