Flaxseed (Linum usitatissimum) contain three main bioactive components namely a-linolenic acid, dietary
fibers and lignan. These are responsible for numerous reports suggesting positive health benefits
from flaxseed. Hence different amounts of ground roasted flaxseed flour was incorporated into bread and
soluble and insoluble fibers, in-vitro protein digestibility, in-vitro glycemic index (GI), in vitro antioxidant
activity and a-linolenic acid (ALA) content were evaluated. Protein digestibility of flaxseed enriched
bread was significantly lower than the control (70.9 versus 78.5 g/100 g). In-vitro GI was significantly
lower (51.3 compared to 94.6 g/100 g in the control bread) and ALA content of optimized bread (containing
10 g of flaxseed per 100 g), as determined using GCeMS, was about 1.51 g/100 g of bread whereas
omega-6 (linoleic acid) content was about 0.15 g/100 g of bread. During 5 days storage period, peroxide
value, anisidine value and free fatty acids were increased in flaxseed supplemented bread samples that
were stored at 30 C and at 4 C.
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