@article {2466, title = {Effect of Different Extraction Solvents on the Total Phenolic Content and Antioxidant Activity of Brassica oleracea var. italica}, journal = {Pharmacognosy Journal}, volume = {17}, year = {2025}, month = {January 2025}, pages = {58-62}, type = {Research Article}, chapter = {58}, abstract = {

This study offers an alternative solution for the prevention and/or treatment of diseases caused by free radicals. The objective was to evaluate the effect of different solvents on the total phenolic content and antioxidant activity of Brassica oleracea var. italica (broccoli). Methods: The sample, consisting of stems and florets of Brassica oleracea var. italica (broccoli), were collected from the Chocas community in Carabayllo, Lima, Peru. Three extracts were prepared using different solvents, including a mixture of ethanol and water. The total phenolic content was determined using the Folin-Ciocalteu method, and antioxidant capacity was evaluated using two specific assays (DPPH and ABTS). Additionally, the correlation between total phenolic content and antioxidant activity was analyzed. Results: The hydroethanolic extract demonstrated the highest phenolic content, with 686.02 mg GAE/100 g dry matter). It also exhibited strong antioxidant activity, measuring 1035.81 mg TE/100 g DM in the DPPH assay and 6506.94 mg TE/100 g DM in the ABTS assay. Conclusion: The highest total phenolic content and antioxidant activity of Brassica oleracea var. italica were found in the hydroethanolic extract, which showed a significant high correlation. Frequent consumption of broccoli in the diet is recommended due to its high values.

}, keywords = {Antioxidant, Broccoli, Extract, Polyphenol, Vegetable}, doi = {10.5530/pj.2025.17.7}, author = {Vivian Nathaly Echegaray Florian and Claudia Giuliana Montoya Sisniegas and Juan Ernesto Valdiviezo-Campos} } @article {982, title = {Effect of Maturation on Phenolics and Flavonoids Content of Greenhouse-Grown Beet Leaf}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {1010-1013}, type = {Original Article}, chapter = {1010}, abstract = {

Objective: This study aims to determine how maturation stages of greenhouse-grown beet leaf influence the total phenolic content (TPC) and total flavonoid content (TFC). Methods: Beet leaf was grown under two different passive solar greenhouses in trans-Himalayan Ladakh. Leaves harvested at three maturity stages were evaluated for TPC and TFC. Results: Significant difference in TPC and TFC was observed between the three maturity stages. Midmature leaves had the highest TPC and TFC followed by mature and immature leaves. When TPC and TFC for all maturity stages were averaged, a marked difference in TPC and TFC was observed in beet leaf grown under the two passive solar greenhouses. Higher TPC and TFC were observed in the greenhouse with higher photosynthetically active radiation (PAR) and UV-transmittance. Conclusion: Beet leaf should be harvested at the midmaturity stage for consumer to benefit from elevated levels of phenolics and flavonoids.

}, keywords = {Antioxidants, Greenhouse, Ladakh, Maturity, Vegetable}, doi = {10.5530/pj.2019.11.159}, author = {Phunchok Angmo and Sonam Chorol and Desyong Namgail and OP Chaurasia and Tsering Stobdan} }