Characterization of extruded plant protein and petroleum-based packaging sheets

E. Obuz, T. J. Herald, K. Rausch

Research output: Contribution to journalArticlepeer-review


Extruded packaging sheets (EPS) were manufactured from wheat gluten (WG) or sorghum flour (SF) in combination with (10, 25, 50, 75, and 100%) low density polyethylene (LDPE) or metallocene-catalyzed ethylenebutene copolymer (MCEBC), and plasticized successfully with sorbitol at a weight ratio of 1:1. Physical analyses were used to characterize the extruded packaging materials. Tensile strengths and elongations of the sheets significantly decreased as the WG or SF increased. Sheets formulated with ≅1:1:2 wheat gluten, sorbitol, and MCEBC exhibited similar elastic properties compared with a 100% MCEBC sheet. Young's modulus and percent elongation at break values decreased as WG-sorbitol or SF-sorbitol level increased in the EPS.

Original languageEnglish (US)
Pages (from-to)97-100
Number of pages4
JournalCereal Chemistry
Issue number1
StatePublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Food Science
  • Organic Chemistry


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