New plasticizers for wheat gluten films - ScienceDirect
New plasticizers for wheat gluten films. Diethanolamine and triethanolamine were selected among several low and high molecular weight polyols and amines tested as potential plasticizers of wheat gluten film. In comparison with glycerol, their use did not significantly affect the solubility in water, the opacity of the film (both increased very
New plasticizers for wheat gluten films - ScienceDirect
Preliminary screening of different substances as plasticizer: preparation and observation of the wheat gluten films The polyols used were: glycerol, polyethyleneglycols (MW=200, 400, 1500, and 3400), polypropyleneglycols (MW=400, 2000, 3000, 4000), and the polyvinylalcohol 8000.
Wheat Biocomposite Extraction, Structure, Properties and
Wheat-gluten-based films, plasticized with glycerol show elongation at break in the range from 320.5–474.5%, 6.33 MPa tensile strength, while the moisture content was just about 5% ; the addition of a plasticizer reduces hydrogen bonding, which allows molecules to move and increase the elongation, while the high tensile appears when starch-starch hydrogen bonds overcomes starch-plasticizer
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 | Request PDF - ResearchGate
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.
- 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.
- 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.
- 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 ].
- Does gliadin/glutenin affect dough rheological properties and bread-making potential?
- Effects of gliadin/glutenin and hmw-gs/Lmw-gs ratio on dough rheological properties and bread-making potential of wheat varieties Characterization of a low-molecular-weight glutenin subunit gene from bread wheat and the corresponding protein that represents a major subunit of the glutenin polymer
- How does water affect the plasticization of biopolymers?
- The plasticization mechanisms can be quite complex, especially if water is present [ 20]. Water also assists in the plasticization of polymers deriving their properties primarily from hydroxyl groups and their condensation into hydrogen bond networks. It is possibly the most effective plasticizer for biopolymers on a mass content basis [7, 21 ].
