Improve quality of casein film with wax.Edible films are environmentally friendly Environmentally friendly, also referred to as nature friendly, is a term used to refer to goods and services considered to inflict minimal harm on the environment.[1] and have the potential to reduce waste. However, many of the films are not too flexible, and are unable to withstand the mechanical stresses they experience in food packaging applications. Previous research has shown that protein film supplemented with zein zein the principal protein in maize. Has low nutritive value, being deficient in lysine and tryptophan. hydrolysate hydrolysate /hy·drol·y·sate/ (hi-drol´i-sat) any compound produced by hydrolysis. protein hydrolysate (ZH) increased in terms of its flexibility but failed to reduce its water vapor permeability (WVP WVP Waste Volume Projections WVP Women Ventures Project WVP Willamette Valley Project (Oregon) WVP Waste Vitrification Projects ). The objective of research at Tuskegee University was to determine the impact of ZH, transglutaminase (TG) and wax emulsion on the WVP, strength and elasticity of casein-based film. Scientists found that a wax coating can decrease the WVP, and ZH can increase the flexibility of edible film fabricated from casein casein (kā`sēn), well-defined group of proteins found in milk, constituting about 80% of the proteins in cow's milk, but only 40% in human milk. . Scientists undertook a 3 x 3 factorial factorial For any whole number, the product of all the counting numbers up to and including itself. It is indicated with an exclamation point: 4! (read “four factorial”) is 1 × 2 × 3 × 4 = 24. design with three film formulations that were crossed with three wax treatments. Formulation I (F-I) was only composed of casein. Formulation II (F-II) included casein, ZH and inactivated inactivated rendered inactive; the activity is destroyed. inactivated viruses treated so that they are no longer able to produce evidence of growth or damaging effect on tissue. TG. Formulation III (F-III) included casein, ZH and active TG. The three wax treatments included a formulation (W-I) which did not have wax. Wax II (W-II) was a film coated with a wax emulsion. Wax III (W-III) was a wax emulsion mixed with a film formulation. Researchers added the TG into the film formulations to cross-link the proteins. Including wax in the formulations significantly decreased the WVP of the film. The WVP of films coated with wax or mixed with wax decreased by 88% and 18%, respectively, compared to the control, which had no wax. Adding TG did not have any significant effect on the WVP of the film. The protein molecules in the film were cross-linked by TG. TG did not have any significant impact on the performance of the film. Adding ZH to the film reduced the film's tensile strength and Young's modulus by approximately 17% and 42%, and increased the flexibility of the film by 31%. Further information. Mohammed Biswas, Department of Chemistry, Tuskegee University, 303 Armstrong Hall, Tuskegee, AL 36088; phone: 334-724-4491; email: mbiswas@tuskegee.edu. |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion