Spray Application of Starch

In the production of corrugating medium, linerboard and other unbleached (Kraft) paperboard grades, starch is added as a slurry spray to the fiber mat on the paper-maker s wire.205 This procedure provides better starch retention in the sheet than the addition of dispersed starch to the stock. According to the position of the spray boom, starch can be forced into the sheet for strength gain or held on the surface for improved surface quality. 

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Kenar JA, Felker FC, Biresaw G, Kurth TL. 2009. Properties of dry film lubricants prepared by spray application of aqueous starch-oil composites. Ind. Crop. Prod. 29 45-52. 

Note Alternatively 1% solutions of starch, iodine and sodium azide may be sprayed successively onto the chromatogram in that order [4, 9], Other orders of application are also referred to in the literature [1, 2, 17] and sometimes the starch is also worked into the layer so that it is not necessary to spray with it [11, 12]. Sometimes the treatment of the chromatograms with starch solution is omitted [5,6,14] in such cases colorless chromatogram zones appear on a brown layer background. 

The range of application of shear cell testing methodology is seen in Tables 2-6. Table 3 relates the flow properties of mixtures of spray-dried lactose and bolted lactose. These mixtures, in combination with the excipients tested, cover a broad range of flow. Tables 4 and 5, for example, show lot to lot variations in the flow properties of several materials, and Table 6 shows the variation in flow properties of bolted starch, sucrose, and phenacetin at different relative humidities (RH). Figure 8 presents the yield loci of sucrose at four different consolidation loads. Also shown in the figure are the shear indices determined at each consolidation load. 

Chlorine spray is used to identify peptides and amino acid derivatives. [231 A blue color is given by almost all compounds that contain NH groups. Alcohols and acids interfere with the test and should be removed prior to application of the spray. The test fails when dioxane is used to develop the plate or when certain fluorescent indicators are present. Several protocols have been described for this test.14 These protocols vary in the reagents that are used to generate the reactive chlorine and the iodine-starch reagent that is used for visualization. 

After spray drying, rice starch containing <0.5% protein is present as clusters of 10-2011 m. At 1.5% and again at 6.0% protein, increased formation of spheres of 30-70 qm is observed. The presence of these spheres is responsible for improved dispersibility and gel smoothness.26 It has also been suggested that the unique absorption properties of the sphere aggregates may have application in holding and dispersement of flavor material or pharmaceuticals.27... 

Most frequently, com or potato starches are used, but there are also applications of wheat starch, rice starch, tapioca starch and others. Recently, waxy maize starch has found commercial application in the manufacture of paper. Thermally dispersed or pregelatinized unmodified starches are used for paper strength improvement by addition to the furnish or by spraying onto the papermaker s wire. 

Use of the starch-iodine complex has been reported for the disinfection of wounds and for the artificial insemination of animals.310 Food containers may also be disinfected with this complex.311 Uses of the starch-iodine complex in the iodization of food312,313 and ruminant fodder314 have also been described. This complex has been found effective in the storage preservation of cabbage and carrots,315 potatoes,316 and apples 317 The addition of 0.0005 to 0.005% of the complex to bee honey also improves its properties it was reported that the application of a 1% aqueous solution of the complex for spraying bee houses increased the yield of honey.318... 

How to Use Commercial starch insecticides aren t yet available in the United States, but you can make your own potato starch spray by mixing 2-4 tablespoons of potato flour in 1 quart water, and adding 2 or 3 drops of liquid dish soap. Shake the mixture, and spray to cover the leaves thoroughly. You can also apply the flour as a du a. If a residue remains on ornamentals, simply wash it away with water a few days after the application. 

Some mills spray starch slurry to the Fourdrinier wire on single-ply webs. The position of the starch spray beam is critical in these applications spraying after the dry line results in starch sitting on the surface of the sheet with potential problems of felt filling and dryer sticking, while spraying close to the head-box results in the loss of most of the starch with the drainage water. The optimum lies somewhere between these positions and must be found by experimentation. 

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