Effects of Drying Methods on the Antioxidant Properties of Piper betle Leaves
Piper betle leaf powder is increasingly utilised as a health supplement. In this study, P. betle leaves were subjected to four different drying methods: convective air-drying, oven-drying, sun-drying, and no drying, with fresh leaves as control. Their antioxidant properties were then evaluated using...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Published: |
MDPI
2024
|
| Subjects: | |
| Online Access: | http://eprints.um.edu.my/45376/ https://doi.org/10.3390/molecules29081762 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Piper betle leaf powder is increasingly utilised as a health supplement. In this study, P. betle leaves were subjected to four different drying methods: convective air-drying, oven-drying, sun-drying, and no drying, with fresh leaves as control. Their antioxidant properties were then evaluated using colourimetric assays and GC-MS. Results showed that the sun-dried leaves had the highest (p < 0.05) total antioxidant capacity (66.23 +/- 0.10 mg AAE/g), total polyphenol content (133.93 +/- 3.76 mg GAE/g), total flavonoid content (81.25 +/- 3.26 mg CE/g) and DPPH radical scavenging activity (56.48 +/- 0.11%), and the lowest alkaloid content (45.684 +/- 0.265 mg/gm). GC-MS analysis revealed that major constituents of aqueous extracts of fresh and sun-dried P. betle leaves were hydrazine 1,2-dimethyl-; ethyl aminomethylformimidate; glycerin; propanoic acid, 2-hydroxy-, methyl ester, (+/-)-; and 1,2-Cyclopentanedione. In conclusion, sun-dried leaves exhibited overall better antioxidant properties, and their aqueous extracts contained biologically active phytoconstituents that have uses in various fields. |
|---|