| dc.description.abstract | Citrus peels have been known to be a source of natural tonic, and bioactive
compounds for prophylactics and improving health. In this research, bioactive
compounds were secreted from fresh grinded peels of Dao Lime (Citrus hybrid –
Citrus spp.), Da Lat Lime (Citrus limonia Osbeck), Thanh Tra Pomelo (Citrus grandis
Obsbeck), and Da Xanh Pomelo (Citrus maxima) by solvent extraction with three
different solvents: methanol, ethanol, and acetone. The effect of those solvents on
extracting compounds was noticed by measuring the total phenolic compounds with
Folin-Ciocalteu’s reagent. Due to the different ratios of available compounds in each
kind of peels and the dissolving ability of solvents, the TPC results were various. In
DL, DLL and TTP, acetone gave the highest extractive ability. However, the
methanol was an exception in DXP. These highest results were collected and kept
on in the antimicrobial and the antioxidant tests through diffusion method (DM),
minimum inhibition concentration (MIC), and DPPH method. In general, the effect of
bioactive compounds against S.Typhi was more than that against S.aureus, and DL
was shown as the best among them, even in the antioxidant test. The results of
antimicrobial and antioxidant tests were illustrated that Citrus bioactive compounds
could be considered as natural remedy for humans. Based on their ratios in peels,
each kind had its own method to be extracted and its own effect.
Key words:
Lime
Pomelo
Citrus bioactive compounds
Solvent extraction
Total phenolic compounds
Antioxidant activity
Antimicrobial activity | en_US |
