Abstract
The goal of present study was to appraise the bioactivity of compounds using
TFC (total flavonoid content), DPPH scavenging activity, reducing power
assay and ABTS (radical scavenging activity) of different solvent extracts,
from Citrus limon (unripe and ripened) peels. In unripe peels the total
flavonoid contents, DPPH radical scavenging activity, ABTS radical
scavenging activity and reducing power ranged from 18.23-57.56 mg/g CE
(catechin equivalent), 21.69-65.82%, 38.96-84.83% and 0.01-1.8 mg /mL,
respectively. For ripened lemon peels all these indicators ranged from 10.53-
47.88 mg/g CE, 37.99-81.40%, 42.96-95.93% and 0.07-1.47 mg /mL
respectively. Lemon peel extracts exhibited good antimicrobial activity against
Escherichia coli, Bacillus subtilus, Staphylococcus aureus and Salmonella
typhimurium. Overall ripened lemon peel extracts showed higher antioxidant
activity than unripe peels. The data presented in present study is an important
factor to select ripened lemon peels as high potential values for nutraceutical,
pharmaceutical and cosmetic industries.
TAHIR MEHMOOD, ANUM AFZAL, ABDUL KARIM, MUHAMMAD ASHRAF SHAHEEN , HINA ARSHAD. (2017) Extracts from unripe and ripened peels of Citrus limon reveal variation in composition of bioactive compounds and exhibit antibacterial activity in relation to different extraction solvents, Biologia – Journal of Biological Society of Pakistan, Volume 63 (II), Issue (II).
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