SLOWLY DIGESTING STARCH AND FERMENTABLE FIBER
First Claim
1. Microparticles comprising a crosslinked polymer matrix with entrapped starch made by a method for preparation of a starch composition to slow starch digestion comprisingmixing an ionically crosslinkable polymer, a starch, and water to form a mixture, andforming crosslinked microparticles from the mixture, where each microparticle comprises starch entrapped within the crosslinked polymer matrix to slow digestion of the starch,wherein the ionically crosslinkable polymer is a polysaccharide gum,wherein the ionically crosslinkable polymer is alginate, pectin, gellan, or mixtures thereof,wherein the weight ratio of the ionically crosslinkable polymer to starch is about 0.01 to about 0.5 in the mixture,wherein the polymer is ionically crosslinkable with divalent cations and the forming step comprises introducing drops or droplets of the mixture into a calcium chloride solution,wherein the mixture further comprises non-starch based fiber, andwherein the non-starch based fiber is a prebiotic.
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Abstract
Compositions which provide slowly digestible starch and a source of fermentable dietary fiber. Microparticles in which starch is entrapped in a crosslinked matrix to provide dietary benefit. Such microparticles are used to deliver glucose to targeted regions in the small intestine for beneficial physiological effects, and fermentable dietary fiber to the colon to improve colon health and to treat diseases of the colon. Microparticles can be employed to selectively deliver fermentable dietary fiber to targeted portions of the colon.
44 Citations
12 Claims
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1. Microparticles comprising a crosslinked polymer matrix with entrapped starch made by a method for preparation of a starch composition to slow starch digestion comprising
mixing an ionically crosslinkable polymer, a starch, and water to form a mixture, and forming crosslinked microparticles from the mixture, where each microparticle comprises starch entrapped within the crosslinked polymer matrix to slow digestion of the starch, wherein the ionically crosslinkable polymer is a polysaccharide gum, wherein the ionically crosslinkable polymer is alginate, pectin, gellan, or mixtures thereof, wherein the weight ratio of the ionically crosslinkable polymer to starch is about 0.01 to about 0.5 in the mixture, wherein the polymer is ionically crosslinkable with divalent cations and the forming step comprises introducing drops or droplets of the mixture into a calcium chloride solution, wherein the mixture further comprises non-starch based fiber, and wherein the non-starch based fiber is a prebiotic.
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7. A slowly fermentable fiber prepared by a method for preparing a fermentable fiber which comprises the steps of
mixing an ionically crosslinkable polymer, a starch, and water to form a mixture, and forming crosslinked microspheres from the mixture, where each microsphere comprises starch entrapped within the crosslinked polymer matrix a portion of which entrapped starch remains undigested on ingestion and passage through the stomach and small intestine, wherein the ionically crosslinkable polymer is alginate, pectin, gellan, or mixtures thereof, wherein the weight ratio of the ionically crosslinkable polymer to starch is about 0.01 to about 0.5 in the mixture, wherein the mixture further comprises non-starch based fiber wherein the non-starch based fiber is a prebiotic, and wherein the starch containing crosslinked microspheres are measured to have 10% or more resistant starch.
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10. A low GI food product which also exhibits slow glucose release which comprises microparticles having a crosslinked polymer matrix with entrapped starch therein.
- 11. Microparticles consisting essentially of a crosslinked polymer matrix with starch entrapped in the matrix.
Specification