Bazı nar ürünlerinin antioksidan özellikler ve in-vitro biyoerişilebilirlik açısından değerlendirilmesi

Abstract

In this research, pomegranate molasses, pomegranate sour sauces and pomegranate jams were evaluated in terms of some physicochemical properties including hydroxymethylfurfural, total phenolic content, antioxidant capacity and bioaccessibility. While ascorbic acid of these products ranged between 0.89-19.78 mg 100g-1 , total phenolic contents changed between 31.40-2061.10 mg gallic acid equivalent 100g-1. Antioxidant capacities of the products were determined as 34.01-2377.52 mg trolox equivalent 100g-1 with DPPH assay and 18.9-6439.0 mg trolox equivalent 100g-1 with CUPRAC assay. The bioaccessibilities regarding phenolic substance and antioxidant capacity after simulated gastrointestinal digestion ranged between 74-247% and 53-213%, respectively. High HMF levels, which were reflected on color and sensory features, have indicated the necessity of improving the production and storage conditions. On the other hand, the highest ascorbic acid, total phenolic content and antioxidant capacity of pomegranate molasses and the bioaccessibility of pomegranate jams in terms of antioxidants showed the importance of consumption of these products in the daily diet. So, this study can be regarded as a case surveillance study that can be used by producers, nutritionals and authorities to make assessments on manufacturing conditions, consumer health and nutrition.

Antioxidant, Anti-Inflammatory, Antimicrobial, and Anticancer Activities of Pomegranate Juice Concentrate

“…The hydrolysis of the glycosidic monomers and the phenolic oligomers found in the PJC releases the different phenolic aglycons and exposes more hydroxyl groups, which react with the total phenolics assay reagent (Folin–Ciocalteu). Our conclusions were consistent with the conclusions of other researchers [ 1 , 3 , 6 ], while the results previously reported [ 11 ] had higher values than our findings. The differences in total phenolic content of PJC between these studies are anticipated to be due to influences such as the types of grenades, climate, cultivars, production, extraction, evaporation, heat performances, and soil [ 3 ].…”

“…Flavonoids are a subclass of phytochemicals with strong bioactive potential and free radical scavenging capacities, and they positively affect human health [ 3 ]. As illustrated in Table 1 , the total flavonoid content of the PFC was 82.58 ± 0.75 mg/100 g. These data agree with those of previously published studies [ 1 , 3 , 6 ], while other results previously reported [ 11 ] showed a higher value than our findings. The reasons for the differences in the total flavonoid content of the PJC between these investigations are similar to the reasons for the differences in the total phenolic content.…”

“…The DPPH • scavenging action of PJC was 19.17 ± 1.01%, while the DPPH • scavenging activities for rutin and vitamin C (used as comparison standards and as positive controls) were 29.23 ± 0.41% and 20.18 ± 0.32%, respectively. These results are similar to those previously reported [ 1 , 3 , 6 , 8 , 9 , 11 ].…”

“…Pomegranate juice concentrate (PJC) is prepared from pomegranate fruit juice, which belongs to the Punicaceae family, Punica genus, and Punica granatum L. species [ 1 , 2 ]. Pomegranates are considered an ancient fruit, which can be grown widely in semi-arid land, arid land, and poor soil, with good yields.…”

Production of natural bitter orange (Bitter orange aurantium) sauce

“…The Hunter L*, a* and b* values of the samples were given in Table 3. Concentration was caused to the darkening of the samples with non-enzymatic browning reactions (35). For this reason; while the L* and b* decreased, a* increased of the bitter orange sour and bitter orange sauce supplemented with CMP.…”