Assessment of Phytochemicals, Antinutritional Compositions and Antioxidant activity of Added Sugar Free Bread Made with Provitamin A-Enriched Cassava/WheatComposite Flour
DOI:
https://doi.org/10.54536/ajmhc.v1i1.7193Keywords:
Antioxidants, Beta Cells Dysfunction, Diabetes Mellitus, Oxidative Stress, Vitamin A CassavaAbstract
Oxidative stress is a major contributing factor in cellular dysfunction triggering the initiation of chronic diseases such as diabetes and cancer. This study investigated the antinutritional compositions and in vitro antioxidative effects of milk flavored bread baked using vitamin A-biofortified cassava flour (CAF)/wheat (WTF) composite flour. The improved yellow provitamin A-biofortified cassava variant (IBA154810) were collected from International Institute of Tropical Agriculture (IITA) Nigeria. The tubers were processed into fine flour. Wheat flour was replaced with the gluten-free cassava flour to produced bread samples in ratio CAF/WTF: 0/100, 20/80, 40/60, 80/20 and 100/0. Phytochemical screenings of composite flour breads revealed the presence of alkaloids; oxalate Saponins, Flavonoids, tannin, and phytate. The antinutritional compositions of the composite breads were low and may not warrant any significant toxicological concern. The Phytate/Fe (0.38±0.05 - 0.98±0.05), Phytate/Zn (0.23±0.04 - 0.75±0.05), Phytate/Ca (0.00±0.00 - 0.02±0.00), and [Ca][Phytate]/Zn (0.26±0.05 - 0.65±0.04) molar ratios indicated good minerals bioavailability. Total β-carotenoids (RAE)µg/g ranged between (0.05±0.01 - 2.78±0.10). Bread samples antioxidant activity against ABTS, DPPH, NO and OH free radicals ranged from (3.04-9.94 mMTE/100g), (36.40-60.63%), (37.71-58.69%) and (56.78-71.09%). The total phenol (19.96±0.05 - 38.21±0.02mgGAE/g), total flavonoids (0.25±0.03 - 4.88±0.16) , FRAP (5.10±0.03 - 6.69±0.00AAE/g) and Fe2+ Chelation ability (14.85±0.08 - 52.18±0.11%) of the bread samples increases with CAF substitution. The results revealed that the provitamin A-enriched composite bread samples possess good antioxidant activities which could help the body neutralize harmful free radicals, reduce oxidative stress and minimize the risk of developing diabetes and other chronic diseases.
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