High fructan cereal plants
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsColin Leslie Dow Jenkins, Bryan Charles Clarke, Zhongyi Li, Matthew Kennedy Morell
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Abstract
The invention provides cereal plants having a high level of fructan useful for the production of a range of food, beverage, nutraceutical and pharmaceutical products. The invention provides methods of producing high-fructan products from plants modified to comprise a reduced level of an endogenous polypeptide with starch synthase activity, and products so produced. In some embodiments, plants are modified by introduction of an agent such as a nucleic acid molecule which down regulates endogenous starch synthase II gene expression.
Claims27
A process for making a composition having barley grain fructan or wheat grain fructan, comprising:
- (i) selecting barley grain or wheat grain which has a reduced level of starch synthase II (SSII) compared to a wild-type grain of the same type;
- and
- (ii) isolating the fructan from the grain selected in step (i) to produce the composition having at least 50% by weight barley grain fructan or wheat grain fructan.
A process for making a food or beverage ingredient having barley grain fructan or wheat grain fructan, comprising
- (i) selecting barley grain or wheat grain which has a reduced level of starch synthase II (SSII) compared to a wild-type grain of the same type;
- (ii) isolating the fructan from the grain selected in step (i) to produce a composition having at least 50% by weight barley grain fructan or wheat grain fructan;
- and
- (iii) processing the composition to make the food or beverage ingredient having barley grain fructan or wheat grain fructan.
A process for making a composition having barley grain fructan or wheat grain fructan, comprising:
- (i) selecting barley grain or wheat grain which comprises at least 4 fructan and has a starch content of at least 30%, each as a percentage of the total grain weight, and has a reduced level of starch synthase II (SSII) compared to a wild-type grain of the same type;
- and
- (ii) isolating the fructan from the grain selected in step (i) to produce the composition having at least 50% by weight barley grain fructan or wheat grain fructan.
Dependencies are inferred from the claim text.