نتایج جستجو برای: starch film
تعداد نتایج: 115874 فیلتر نتایج به سال:
Analyze Infrared Heating Characteristics of Potato Starch and Measure its Functional Film Properties
Objectives: To analyze the effect of potato starch infrared heating (IR) and functional characteristics film. Methods: Potato was heated by IR heater at different time intervals (45 min, 65 min 85 min) used to develop polymer films addition glycerol as a plasticizing agent. The surface temperature bed thickness measured using thermal imaging camera. varied from 72.77oC 80.83oC. properties devel...
Multilayer films exhibit excellent properties for food packaging. However, existing products are not biodegradable. Conventional plastics, manufactured from fossil fuels, not only consume non-renewable and finite resources, but also impact heavily on waste disposal. A new multilayer film has been developed in the Multibio Project for the production of food packaging. In this paper, the environm...
The work studied weight losses of harvested strawberries provided with protective edible coating. Coatings were produced by dipping strawberries in 50 % (w/w) starch-protein hydrolysate of Amaranth flour. Tests investigated influence of added glycerol (10 or 30 %) and dialdehyde starch (1 or 4 %) on barrier properties. A protective film was produced on the strawberries after drying 5 min. at 23...
Biodegradable starch-based chitosan reinforced composite polymeric films were prepared by casting. The chitosan content in the films was varied from 20% to 80% (w/w). Tensile strength (TS) was improved significantly with the addition of chitosan but elongation at break (EB %) of the composites decreased. Tensile strength of the composites raised more with the addition of the acacia catechu cont...
Starch is one of the cheapest raw materials which can be used in edible film formation. Due to the fact that it is a natural constituent, its incorporation as a food coating does not involve any health risks, although as a barrier material it has the disadvantage of having poor water vapour barrier properties. This could be improved if different non-polar components are included in the starch m...
The time sequence analysis of the starch digestion pattern of the thin sectioned germinating rice (Oryza sativa L.) seed specimens using the starch film method showed that at the initial stage amylase activity was almost exclusively localized in the epithelium septum between the scutellum and endosperm. Starch breakdown in the endosperm tissues began afterward; amylase activity in the aleurone ...
This study presents an easily prepared film based on alkaline starch-polyvinyl alcohol hybrid and lignin fiber as additive (SPL film). The SPL was under acidic conditions through a polycondensation reaction of PVA mixture incorporating starch from agriculture or forest source. examination using scanning electron microscopy (SEM) showed that the surface smooth had good compatibility within hybri...
Equations were obtained from response surface models to show how the ultimate tensile strength (UTS) and percent elongation at break (%E) of solution-cast films vary with relative amounts of starch. poly(vinyl alcohol) (PVA). poly(ethylene-co-acrylic acid) (EAA) and glycerol in the formulation. Equations found from the response surface methodology were used to optimize the relative amounts of t...
Huanglongbing (HLB) or citrus greening disease is an extremely dangerous infection which has severely influenced the citrus industry in Florida. It was also recently found in California and Texas. There is no effective cure for this disease reported yet. The infected trees should be identified and removed immediately to prevent the disease from being spread to other trees. The visual leaf sympt...
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