Wheat gluten films obtained by compression molding
Pommet et [6] prepared wheat gluten blends with 5 different plasticizers (water, glycerol, 1,4-butanediol, octanoic acid and lactic acid) in a mixing chamber at 80 and 60 °C, for hydrated and dry gluten, respectively, and then the blends were compression-molded at 100 or 130 °C.
New plasticizers for wheat gluten films - ScienceDirect
Wheat gluten films were prepared with glycerol, diethanolamine or triethanolamine as the plasticizing agent. The influence of these substances on the gluten film properties were studied at two RH conditions (58% and 98%) and for two amounts of plasticizer (10 g and 20 g/100 g dm). 3.2.1. Opacity
Plasticizers for Protein‐Based Materials
Blending procedure About 350 g wheat gluten powder and 150 g of plasticizer were blended using a food processor (WATT; DUKA AB, Sweden) at the lowest speed, “Speed 1” (about 95 rpm), for 60 s. About 40 g of the blend was then transferred to a Brabender plasticorder PL2000 with a M50EHT measuring head and kneaded at 50 rpm for 2 min.
An overview on the role of wheat gluten as a viable
The blend is then hot-molded in a heating press. ... Bauduin G, Boutevin B, Gontard N. New plasticizers for . wheat gluten films. Eur Polym J 2001; 37: 1533–1541. ... pressed wheat gluten films
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Conventionally, glycerol has been used as plasticizer for gluten, but several new plasticizers have also been reported to provide better stability and mechanical properties. 12 It was shown...
- Who makes wheat gluten concentrate powder?
- The wheat gluten concentrate powder was manufactured by Lantmännen Reppe AB, Sweden. It has a protein content of 86.3 ± 0.3 (Dumas method, NMKL 6:2003, USA, N x 6.25). The fat content was 0.9 ± 0.1% (2009/152/EU mod) and the ash content was 0.8 ± 0.1%, (NMKL 173). Glycerol (>99.5%) was purchased from PWG Produkter AB, Sweden. 2.2.
- How is wheat gluten mixed with glycerol?
- As-received wheat gluten was mixed with glycerol into a dough in a dough maker (Kenwood Major KM615 900 W, Kenwood Ltd, UK) at a moderate stirring rate for 5 min. Samples with a glycerol content of 20, 22, 24, 26, 28, and 30 wt%, with respect to the total mass of wheat gluten and glycerol, were prepared.
- Is glycerol a plasticizer?
- Despite having three hydroxyl groups per molecule, glycerol's efficient plasticization (turning brittle biopolymers into tough/flexible materials) occurs typically at a relatively high plasticizer content.
- What is efficient plasticization?
- Efficient plasticization is referred to here as when the added plasticizer gives the demanded/sufficient toughness/ductility of the material for a specific application, and may hence be different for different applications. It implies the avoidance of an “apparent” brittleness [14 ].
- Is wheat gluten a polypeptide?
- Wheat gluten is a complex mixture of different polypeptides and the rationale for describing it with the LMW-gs polypeptide is its high abundance and that the plasticization effect of glycerol and water would not depend strongly on the actual peptide simulated.
- When does efficient plasticization occur in starch-glycerol system?
- In both experiments and simulations, the onset of efficient plasticization in the starch-glycerol system is shown to occur somewhere between 20 and 30 wt% of glycerol [ 29]. This is expected according to percolation theory, since when a percolated path of plasticizer develops through the material, efficient plasticization is likely to occur.
