A
nutrition bar comprising about 10% wt or more of soy and / or
rice protein, at least one
transition metal or
transition metal compound, and about 2% wt or more of a
humectant, and wherein the at least one
transition metal or transition
metal compound is in a substantially
water insoluble form at 20° C. or the
nutrition bar has an Aw of 0.45 or less or about 1% wt or more of the soy and / or
rice protein is in the form of nuggets and the
humectant is selected from polyols. The bars have elevated levels of soy and / or
rice protein, yet do not suffer unacceptable from a deterioration in taste or other
organoleptic properties over time. In other aspects, a
nutrition bar or other food which incorporates pro-oxidants and / or polyunsaturated fatty acids or their sources in encapsulated form, especially as microcapsules. The pro-oxidants may be
metal salts such as
copper,
manganese, iron and / or
zinc salts. Sources of
omega-3 fatty acids include
fish oil. Processes for preparing the
polyunsaturated fatty acid capsules are also disclosed. The
polyunsaturated fatty acid capsules / microcapsules are prepared by forming an
emulsion of the
unsaturated fatty acid with a carrier,
spray drying the
emulsion to form a
powder and encapsulating
powder, especially with a fluid
bed. The invention is especially useful for encapsulating polyunsaturated fatty acids, or oil sources thereof, most preferably
omega-3 and
omega-6 fatty acids, such as
arachidonic acid,
docosahexaenoic acid (DHA),
eicosapentaenoic acid (EPA), lineoleic acid,
linolenic acid (
alpha linolenic acid), and gamma-linolenic acids,
fish oil, and oil sources of C18:2 and C18:3 fatty acids such as
canola oil,
soybean oil or blends thereof.