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    • 8. 发明申请
    • Production of Resistant Starch Product Having Tailored Degree of Polymerization
    • 生产具有定制聚合度的抗性淀粉产品
    • US20080280332A1
    • 2008-11-13
    • US12038986
    • 2008-02-28
    • Donald W. Harris
    • Donald W. Harris
    • C12P19/04
    • C12P19/16A23L29/35A23V2002/00C12P19/18A23V2200/126A23V2200/242A23V2250/5118
    • A process for producing a starch comprises treating a feed starch that comprises amylopectin with glucanotransferase to produce a chain-extended starch, treating the chain-extended starch with a debranching enzyme to produce a starch product that comprises amylose fragments, crystallizing at least part of the starch product, heating the starch product in the presence of moisture, treating the starch product with alpha-amylase, and washing the starch product to remove at least some non-crystallized starch, wherein the degree of polymerization of the starch product is increased by increasing the amylose content of the feed starch or is decreased by decreasing the amylose content of the feed starch. The product of this process can have a relatively high total dietary fiber content, a relatively high heat resistance, or both.
    • 制备淀粉的方法包括用含有葡聚糖转移酶的支链淀粉处理饲料淀粉以产生链延长的淀粉,用脱支酶处理链延长的淀粉以产生包含直链淀粉片段的淀粉产物,将至少部分 淀粉产品,在水分存在下加热淀粉产物,用α-淀粉酶处理淀粉产物,并洗涤淀粉产物以除去至少一些非结晶淀粉,其中淀粉产物的聚合度通过增加而增加 饲料淀粉的直链淀粉含量或通过降低饲料淀粉的直链淀粉含量而降低。 该方法的产物可以具有相对高的总膳食纤维含量,相对高的耐热性,或两者兼有。