PLANTS HAVING REDUCED ACTIVITY IN TWO OR MORE STARCH-MODIFYING ENZYMES

摘要

Disclosed is potato starch which, when in native form extracted from a potat o plant, exhibits freeze/thaw stability such that a 1 %w/v aqueous suspension of the starch has an absorbance at 700nm wavelength of less than 1.2 units following 4 freeze/thaw cycles of freezing at -70 ~C overnight and thawing a t room temperature for at least 2 hours; together with a method of altering th e starch content of a plant; and altered plants, especially altered plants whi ch contain freeze/thaw stable starch. Further disclosed is waxy (i.e. low amylose) starch having reduced gelatinization onset and swelling temperature s.