American Journal of Food Science and Health
Articles Information
American Journal of Food Science and Health, Vol.1, No.1, Apr. 2015, Pub. Date: Apr. 2, 2015
Bioactives Concentrate from Commercial Indian Niger (Guizotia Abyssinica (L.f.) Cass.) Seed and its Antioxidant and Antiradical activity
Pages: 10-20 Views: 1175 Downloads: 660
Authors
[01] A. S. Bhatnagar, Department of Traditional Foods & Sensory Science, CSIR-Central Food Technological Research Institute, Mysore, India.
[02] A. G. Gopalakrishna, Department of Traditional Foods & Sensory Science, CSIR-Central Food Technological Research Institute, Mysore, India.
Abstract
The antioxidant and antiradical activities of bioactives rich niger seed oil (BRNSO) and bioactives concentrate from niger seed oilcake (BCNSOc) were evaluated. BRNSO and BCNSOc contained glycolipids; phospholipids; unsaponifiable matter to the extent of 24.6 and 35.8 g/100g; 9.5 and 23.6 g/100g; 4.3 and 5.5 g/100g, respectively. BRNSO and BCNSOc contained vitamin K1 (1689.5 and 3225.3 ppm), tocopherols (345.8 and 405.5 ppm), phenolics (2266.2 and 2545.5 ppm), phytosterols (6309.3 and 6834.5 ppm) and carotenoids (181.0 and 301.6 ppm), respectively. BRNSO and BCNSOc also showed strong IC50 values of 9.2 and 5.7 mg/mL, respectively. BRNSO (at two different ratios i.e. 1:1 and 1:3) and BCNSOc (at three different levels i.e. 1%, 5% and 10%) were incorporated into commercial refined sunflower oil (SFO) with the aim of improving its oxidative stability (OS) and radical scavenging activity (RSA). Peroxide value (PV) of SFO increased rapidly from 1.2 to 98.2 meq O2/kg during 45 days of incubation at 37°C while the SFO mixtures with BRNSO and BCNSOc showed better stability as their PV was below 20.0 meq O2/kg till 30th day of incubation. SFO mixtures with BRNSO and BCNSOc also showed better RSA than SFO. This is probably the first report on bioactives of niger seeds being evaluated for its efficacy in improving the OS and RSA in a bulk oil model system.
Keywords
Indian Niger Seeds (Guizotia abyssinica (L.f.) Cass.), Bioactives Rich Niger Seed Oil, Niger Seed Bioactives Concentrate, Oxidative Stability, Radical Scavenging Activity
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