BackgroundSpices and their bioactive components are more promising attractions for their inclusion in diet-based regimes to improve human health. These are sources of natural antioxidants and play an important role in the chemoprevention of diseases and aging. The aim of the current study was to explore the antioxidant potential of cinnamon; a widely used spice throughout the world.MethodsThe current research was aimed to investigate the antioxidant potential of cinnamon extract. For the purpose, cinnamon sticks were procured from local super market, while palm oil was obtained from local oil industry. The resultant extract was analyzed for its antioxidant activity through total phenolic content (TPC), free radical scavenging activity (DPPH assay), and total antioxidant activity was measured by ferric reducing antioxidant power (FRAP) test. The shelf life of palm oil was checked by adding cinnamon extract in oil at different levels i.e., 0.05, 0.10, 0.15, 0.20 and 0.25%, to compare the antioxidant potential of the extract whereas, To acted as control and TBHA @ 0.1% was used as synthetic antioxidant in the oil samples. The oil samples were analyzed for rancidity check during storage (after every seven days for a storage period of four weeks).ResultsThe results indicated that total phenolic contents (TPC); 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) values of cinnamon extract were as 355.01 ± 8.34 gallic acid equivalent per gram (mg GAE/g), 90.18 ± 2.12 (%) and 132.82 ± 3.12 (μmol/g), respectively. The oxidative parameters for treatments i.e., To, TBHA, T1, T2, T3, T4, T5 were recorded as peroxide value (2.61 ± 0.07, 2.42 ± 0.08, 2.57 ± 0.05, 2.56 ± 0.03, 2.54 ± 0.02, 2.54 ± 0.01, 2.46 ± 0.06 meq/kg, respectively), free fatty acids (0.601 ± 0.05, 0.522 ± 0.02, 0.580 ± 0.07, 0.572 ± 0.03, 0.56 ± 00.07, 0.552 ± 0.03, 0.536 ± 0.05%, respectively), TBA value (22.4 ± 1.45, 20.1 ± 0.73, 21.8 ± 0.42, 21.2 ± 1.56, 20.7 ± 0.48, 20.5 ± 0.59, 20.2 ± 0.91 μg/kg, respectively) and iodine value (52.82 ± 2.12, 52.71 ± 2.38, 52.68 ± 2.96, 52.97 ± 2.14, 52.93 ± 2.12, 53.15 ± 2.38, 52.71 ± 2.96, respectively). Overall, the statistical analysis indicated that all parameters regarding oil stability i.e., peroxide value (PV), free fatty acid content, (FFA) thiobarbituric acid (TBA) value and iodine value (IV) were significant with respect to treatments and storage.ConclusionFrom the present study, it can be concluded that the cinnamon extract proved effective in reducing the lipid oxidation of palm oil and it can be successfully used in place of synthetic antioxidants in food preparations.
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The purified cellulolytic enzyme was applied in carotenoid extraction from the Kinnow mandarin peel. The results revealed that the highest yield (8.60 ± 0.44 mg/100 g peel) of carotenoids was observed in T4, a combination of 250 IU both of CMCase and Pectinase/100 g peel whereas, the minimum recovery (3.21 ± 0.17 mg/100 g peel) was found in case of T0 (control). To assess the storage stability, the extracted carotenoids were subjected to different conditions for light and temperature. When the pigment was stored at 30 °C in dark, it showed more stability than in light. Similarly, pigment stability was adversely affected by increasing storage temperature and the loss was more pronounced at higher temperature as compared to refrigeration. After freeze drying, the stability of the extracted pigment was assessed; high retention was observed when stored in darkness or under refrigerated conditions.
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