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Your current position:China ChuangLian Edible Gum Website » Colloid » Modified starch

  • Modified starch
  • Alias : starch derivatives
  • Classification :  Chemically Modified Gum
  • Pageviews : 206
  • what is  Modified starch
  • Modified starch, also called starch derivatives, are prepared by physically, enzymatically, or chemically treating native starch to change its properties.[1] Modified starches are used in practically all starch applications, such as in food products as a

  • Introduction of colloid :
  • Modification methods

    Acid-treated starch (INS 1401),[3] also called thin boiling starch, is prepared by treating starch or starch granules with inorganic acids, e.g. hydrochloric acid breaking down the starch molecule and thus reducing the viscosity.

    Modified starch may also be a cold-water-soluble, pregelatinized or instant starch which thickens and gels without heat, or a cook-up starch which must be cooked like regular starch. Drying methods to make starches cold-water-soluble are extrusion, drum drying, spray drying or dextrinization.

    Other starch derivatives, the starch sugars, like glucose, high fructose syrup, glucose syrups, maltodextrins, starch degraded with amylase enzyme are mainly sold as liquid syrup to make a sweetener.

    Examples of use and functionality of modified starch

    Pre-gelatinized starch is used to thicken instant desserts, allowing the food to thicken with the addition of cold water or milk. Similarly, cheese sauce granules (such as in Macaroni and Cheese or lasagna) or gravy granules may be thickened with boiling water without the product going lumpy. Commercial pizza toppings containing modified starch will thicken when heated in the oven, keeping them on top of the pizza, and then become runny when cooled.

    A suitably modified starch is used as a fat substitute for low-fat versions of traditionally fatty foods, e.g., reduced-fat hard salami having about 1/3 the usual fat content. For such uses, it is an alternative to the product Olestra.

    Modified starch is added to frozen products to prevent them from dripping when defrosted. Modified starch, bonded with phosphate, allows the starch to absorb more water and keeps the ingredients together. Modified starch acts as an emulsifier for French dressing by enveloping oil droplets and suspending them in the water. Acid-treated starch forms the shell of jelly beans. Oxidized starch increases the stickiness of batter.

    Carboxymethylated starches are used as a wallpaper adhesive, as textile printing thickener, as tablet disintegrants and excipients in the pharmaceutical industry.

    Cationic starch is used as wet end sizing agent in paper manufacturing.

    Genetically modified starch

    Modified starch should not be confused with genetically modified starch, which refers to starch from genetically engineered plants, such as those that have been genetically modified to produce novel fatty acids or carbohydrates which might not occur in the plant species being harvested. In the United States the term can also refer to foods that have been created by traditional cross-breeding rather than gene splicing

    Genetically modified starch is of interest in the manufacture of biodegradable polymers and noncellulose feedstock in the paper industry, as well as the creation of new food additives. For example, researchers aim to alter the enzymes within living plants to create starches with desirable modified properties, and thus eliminate the need for enzymatic processing after starch is extracted from the plant.[4]



  • References:
  • 1. "Vickie Vaclavik, Vickie A. Vaclavik, Elizabeth W. Christian" (2007). Essentials of food science (3rd ed.). Springer. p. 61. ISBN 978-0-387-69939-4.

    2. Starch derivatization: fascinating and unique industrial opportunities, K. F. Gotlieb, A. Capelle, Wageningen Academic Publishers, 2005, ISBN 978-90-76998-60-2

    3. a b c d e f g h Codex General Standard for Food Additives (GSFA) Online Database

    4. Zeeman et al. "Starch: Its Metabolism, Evolution, and Biotechnological Modification in Plants" in Annual Review of Plant Biology, 2010, http://www.annualreviews.org/doi/full/10.1146/annurev-arplant-042809-112301


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