Preparation and properties of solution cast films from pennycress protein isolate

Authors: Selling, Gordon; Hojilla-Evangelista, Milagros - Mila; Utt, Kelly; Grose, Gary

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 12/29/2017
Publication Date: 3/17/2018
Citation: Selling, G.W., Hojilla-Evangelista, M.P., Utt, K.D., Grose, G.D. 2018. Preparation and properties of solution cast films from pennycress protein isolate [abstract]. 254th American Chemical Society National Meeting & Exhibition, August 20-24, 2017, Washington, D.C.

Interpretive Summary:

Technical Abstract: Pennycress is a crop which may grow over the winter months and may be a good candidate for biodiesel production due to the high oil content of the seed. All parts of the seed must be utilized in order to obtain the most value from the pennycress seed. High yield and very high purity pennycress protein isolate (PPI) was obtained using an improved pilot scale process. Solution cast films were prepared from formic acid solution. The films had good transparency but high color. Glycerol (GLY) was found to be a good plasticizer for PPI. Elongations up to 194% could be obtained at the highest level tested of GLY. At these high elongations, tensile strength declined to 3.2 MPa. Increased humidity resulted in increased elongation and lower tensile strength. The Tg and heat deflection temperature for the PPI films were in the range of 75 and 117 °C respectively. Degradation began at around 170 °C. the films had good water and oxygen barrier performance. Given the overall balance of properties, PPI films may have value in film applications. This would especially be true in composite applications where exposure to moisture may be reduced.