Oilseed Meal Based Plastics from Plasticized, Hot Pressed Crambe abyssinica and Brassica carinata Residuals

Abstract

With the increased use of plant oils as sustainable feedstocks, industrial oilseed meal from Crambe abyssinica (crambe) and Brassica carinata (carinata) can become a potential source for oilseed meal based plastics. In this study, crambe and carinata oilseed meal plastics were produced with 10-30 % glycerol and compression molding at 100-180°C. Size exclusion HPLC was used to relate tensile properties to changes in protein solubility and molecular weight distribution. By combining glycerol and thermal processing, increased flexibility has been observed compared to previous work on unplasticized oilseed meal. Tensile results varied from a brittle crambe based material (10 % glycerol, 130°C), Young's modulus 240 MPa, strain at maximum stress of 2 %, to a soft and flexible carinata based material (30 % glycerol, 100°C), Young's modulus 6.5 MPa, strain at maximum stress of 13 %. Strength and stiffness development with increasing molding temperature is in agreement with the protein profiles obtained. Thus, the highest mechanical parameters were obtained at the protein solubility minimum at 140°C.Higher temperatures caused protein degradation, increasing the level of low molecular weight extractable proteins. In carinata based materials the strain at maximum stress decreased as the protein aggregation developed. Results presented indicate that both crambe and carinata oilseed meal based materials can have their properties modulated through thermal treatment and the addition of plasticizers.

Development of bioplastics based on agricultural side‐stream products: Film extrusion of Crambe abyssinica/wheat gluten blends for packaging purposes

“…The findings by Henne were in accordance with the study of Newson et al ., who investigated the changes that occur in plasticized crambe (10–30 wt % glycerol) when compression molded at different temperatures, ranging from 100 to 170°C. The optimum processing temperature was found to be 130–140°C, corresponding to the most developed protein network with the best tensile properties.…”

“…Both crambe and WG are byproducts/coproducts from the oil, fuel, and/or starch industry. The defatted crambe meal that is left after oil seed extraction is rich in protein and crude fibers; however, it is unfortunately unsuitable as human or animal feedstock because of the presence of high levels of nonedible components . Alternative uses for crambe meal are thus currently explored.…”

“…Oxygen permeability values could not be measured, indicating large transmission rates . Later studies showed that a pressing temperature of 130°C lowered, significantly, the water absorption and also increased the tensile strength possibly due to a larger extent of protein crosslinking …”

Nanostructural Morphology of Plasticized Wheat Gluten and Modified Potato Starch Composites: Relationship to Mechanical and Barrier Properties

“…After sonication, the amount and size distribution of proteins in centrifuged samples from 1Ex, 2Ex and 3Ex were analyzed with a Waters 2690 Separation Module and Waters 996 Photodiode Array Detector (Waters, USA) according to Newson et al 23 . For analysis, 20 µl of each sample was injected onto an SE-HPLC column (Biosep-SEC-S 4000, Phenomenex, USA), at an isocratic flow of 0.2 ml/min (50% acetonitrile, 0.1% TFA; 50% H 2 O, 0.1% TFA).…”

Structural and nutritional characterization of macromolecular complexes in new bioenergy feedstock by infrared radiation with advanced molecular spectroscopy and spectral chemometrics

“…Canola meal has been widely used in the animal feed industry, both for monogastric animals (Blair et al, 1986;Hilton and Slinger, 1986;Newkirk, 2009;Zhou et Applied Spectroscopy Reviews ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 8 al., 2013) and ruminants (Huhtanen et al, 2011;Newkirk, 2009;Piepenbrink and Schingoethe, 1998) as a high protein source. However, carinata meal is not considered edible but used in oilseed meal-based plastic production and biofumigation, given its anti-nutrients (such as glucosinolates) (D'Avino et al, 2015;Galletti et al, 2008;Newson et al, 2013). Considering its high crude protein content (48%) (Newkirk, 2009;Xin and Yu, 2013), carinata meal could be processed to decrease glucosinolates and then utilized in the animal feed industry.…”