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Biology

Journal of Bioresource Management

DPPH Assay

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Full-Text Articles in Life Sciences

Dna Protective Activity Of Peels Of Some Vegetables Wastes, Aisha Ishaq, Kainaat William Dec 2015

Dna Protective Activity Of Peels Of Some Vegetables Wastes, Aisha Ishaq, Kainaat William

Journal of Bioresource Management

The present study was conducted by using kitchen wastes like peels of different vegetables e.g. cucumber, potato, carrot, chickpea, cauliflower and pea, to evaluate the phytochemical constituents, DNA protection ability and free radicals scavenging activity. Phytochemicals tests showed the presence of carbohydrates, amino acids, glycosides, alkaloids, tannins and steroids in all samples while phlobatannins, anthraquonines and saponins were absent. The DNA protection of samples was checked by DNA protection assay using plasmid pBR322. Cauliflower and cucumber showed best protection at each dilution. DPPH free radicals scavenging assay was used to evaluate the antioxidant activity of peel extract of vegetables. Carrot …


A Study Of Dna Protective Ability Of Peels Of Different Citrus Species, Nehrish Nisar, Kainaat William, Azra Khanum Oct 2015

A Study Of Dna Protective Ability Of Peels Of Different Citrus Species, Nehrish Nisar, Kainaat William, Azra Khanum

Journal of Bioresource Management

The aim of the present study was to assess the DNA protection ability, free radicals scavenging activity, and phytochemical constituents of peel extracts of various species of citrus. Results showed the presence of carbohydrates, amino acids, glycosides, tannins, steroids and alkaloids. DNA protection assay showed maximum protection with methanolic extracts of peels of C. limon, C. reticulata, C. aurantium and C. sinensis as compared to C. limetta which showed less protection. DPPH assay used to assess the antioxidants showed the highest activity in the methanolic extract of peels of C. reticulata and C. aurantium with 75% and 86% respectively at …


Assessment Of Antimicrobial And Antioxidant Activity Of Justicia Californica, Nabeela Shafique, Rizwana Aleem Qureshi Jun 2015

Assessment Of Antimicrobial And Antioxidant Activity Of Justicia Californica, Nabeela Shafique, Rizwana Aleem Qureshi

Journal of Bioresource Management

The present study focused on the exotic plant species Justicia californica, which is a native species of California. Phytochemicalanalysis was performed, which showed the presence of alkaloids, aminoacids, carbohydrates, glycosides, phlobatannins, and tannins in the root extract of J.californica, whereas amino acids, carbohydrates, and tannins were present in leaf and stems extract. In roots, 9.46%, and in leaf and stem, 13.35% flavonoids were found. Phenolics were found to be key phytochemicals, playing a role in antioxidant activity, which are about 8% in the sample of roots and 11.4% in the extract of leaf and stems. The DPPH assay, …