فهرست مطالب rajasekhar lakshmipathy

The present study reports the microencapsulation of extracts of saffron pollens containing polyphenolic compounds. Saffron pollen exhibit varying properties such as antioxidant and sensory properties and is also a source of many nutrients and bioactive compounds. In order to protect the polyphenols, the saffron pollen extract was microencapsulated by the spray drying method with maltodextrin as a carrier. Prior to encapsulation, the unbound water, total polyphenols contents and antioxidant activity of the extract was determined. The effect of inlet temperatures on the content of bioactive compounds, powder production yield, solubility and wettability was considered to study the spray drying process. The SEM images reveal that the produced microcapsules are spherical in shape. The results showed that the total polyphenol content of saffron pollen extract was found to be 620 ± 4.50, 470 ± 2.65, 420 ± 2.18 mg gallic acid per g, for 140, 160 and 180 , respectively and spraying drying could significantly maintain the polyphenolic content as well as the antioxidant capacity of extracts. The IC50 results for saffron pollen extract was found to be 0.177 ± 0.08, 0.191 ± 0.09, 0.182 ± 0.08 g per 100 g, for 140, 160 and 180 , respectively. The best temperature for this purpose with the highest solubility and wettability of the powder is the inlet temperature of 140  and Outlet temperature of 85 , thus have potential applications in food and pharmaceutical products.

Saffron is a spice derived from the flower of Crocus sativus L. The present study reports the antioxidant capacity and chemical compositions of various parts of saffron. The IC50 for stigma, style, stamen, petal and corm was found to be 4.94 ± 0.25, 123.68 ± 8.52, 58.97 ± 3.63, 46.02 ± 2.89 and 720.49 ± 14.32 μg/mL, respectively. The ferric reducing antioxidant power assay for these parts of saffron flower was determined and the stigma of saffron has the highest (2.36 ± 0.15 g Fe+2/100 g sample) and the corm of saffron has the lowest value (0.03 ± 0.001 g Fe+2/100 g sample). The Folin-Ciocalteu method was used to estimate the total phenolic content and the highest amount was found in stigma (183.25 ± 16.42 g quercetin/100 g sample) and the lowest amount in style of saffron (3.72 ± 0.89 g quercetin/100 g sample) respectively. The stigma and stamen of saffron were found to have 597.67 ± 11.12 and 159.14 ± 5.03 μg/g sample of carotenoid content which is highest among the selected parts of saffron. The aim of this study was to provide information about all of the saffron flower parts.