Size classified cereal starch granules
    2.
    发明授权
    Size classified cereal starch granules 失效
    大小分类谷物淀粉颗粒

    公开(公告)号:US3951948A

    公开(公告)日:1976-04-20

    申请号:US478563

    申请日:1974-06-12

    IPC分类号: C08B30/04 C08B31/00 C08B31/18

    摘要: A wet process for separating certain cereal starch granules according to size, and the new large granule cereal starch made thereby. Barley, rye and wheat starch may be processed according to the invention, and may bbe subjected to further modifications, such as cross-linking, to further improve the properties of the product.Native colloid, prime grade wheat starch slurry is pumped through a series of cyclone-type separators in a wet process system to separate the large granule portion from the small granule portion. These small granules range in size from about 3-10 microns.A recirculation system is provided to get a starch granule fraction comprising 99% by weight large granules ranging in size from about 12 microns to 40 microns, and at least 22% comprising granules which are 22 microns or larger in size. This product has a very large portion of large granules in comparison to prime grade wheat, which normally comprises about 2.5% granules which are 22 microns or larger. The uniformly sized large starch granules derived by the separation process of the invention are particularly useful in anti-offset lithograph powders, and as protective particles in the sensitized surface coating of non-carbon duplicating paper which normally contains microencapsulated ink. In the latter application, the uniform sized cereal starch particles replace scarce arrowroot starch particles to prevent premature rupture of the ink-containing capsules during handling of the sensitized paper. There is also evidence to show an improvement in baked goods attributable to the use of reconstituted flours incorporating the large granule starch of the invention.The smaller, uniformly sized starch granules also have more uses because of their uniform smaller size, particularly as a substitute for rice starch. Wheat, barley and rye starch are suitable base starch materials because they are easily separated into small and large particle fractions. Wheat is the most readily available of these cereal grains, and is therefore the presently preferred base starch.

    摘要翻译: 根据尺寸分离某些谷物淀粉颗粒的湿法和由此制成的新的大颗粒谷物淀粉。 可以根据本发明加工大麦,黑麦和小麦淀粉,并且可以进行进一步的修饰,例如交联,以进一步改进产品的性质。

    Enlarged granule starch stilt material for microencapsulated coatings
    3.
    发明授权
    Enlarged granule starch stilt material for microencapsulated coatings 失效
    用于微囊化涂层的增大的颗粒淀粉高粱材料

    公开(公告)号:US4139505A

    公开(公告)日:1979-02-13

    申请号:US848545

    申请日:1977-11-04

    摘要: Enlarged granule starch useful as a protective stilt material in microencapsulated coatings to prevent premature rupture of the microcapsules. Starch granules are increased in size by alkali-swelling of the granules in aqueous slurry. The enlarged granules are then crosslinked to aid in preserving the enlarged granular form through subsequent aqueous coating applications and thermal drying steps. A combination of hydrocyclone starch granule sizing and granule treatment employing alkali-swelling and crosslinking substantially improves the yield of usable large granule stilt materials obtainable from prime grade wheat starch, and other bimodal granular starches such as barley and rye.

    摘要翻译: 放大的颗粒淀粉可用作微胶囊化涂层中的保护性高分子材料,以防止微胶囊过早破裂。 淀粉颗粒的大小通过在含水浆料中的颗粒的碱溶胀而增加。 然后将扩大的颗粒交联以有助于通过随后的水性涂料应用和热干燥步骤保留增大的颗粒形式。 使用碱膨胀和交联的水力旋流器淀粉颗粒施胶和颗粒处理的组合基本上提高了可从初级小麦淀粉和其它双峰粒状淀粉如大麦和黑麦获得的可用的大颗粒高粱材料的产量。