摘要：

Starch derivatives capable of forming reversible gels are provided. Aqueous dispersions or solutions of the derivatives form thermally reversible hot gels at temperatures above 70° C. and a pH of 3-8, in addition to exhibiting substantial increases in viscosity upon cooling from 95° to 70° C. The starch derivative may be alkali gelatinized at a pH 13 or above and the gel formed at a pH of from 1-10. The gelling agents are starch ethers or starch esters having an amylose content of at least 17% by weight with the ether or ester substituent comprising a linear saturated or unsaturated hydrocarbon chain of at least 12 carbon atoms.

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