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Extraction of Thunbergia laurifolia Lindl. with subcritical fluid technique
Name: Nichapa Areepong
Organization :
Thammasat School of Engineering. Faculty of Engineering
Email :
wveronic@engr.tu.ac.th
Name: Veronica Winoto
Organization :
Thammasat School of Engineering. Faculty of Engineering
keyword:
Thunbergia laurifolia
LCSH:
Medicinal plants
Abstract:
Thunbergia laurifolia Lindl. or Rang Jued is a local Thai plant that belongs to Acantaceae
family. It was widely used as herbal Thai tea or medical treatment. Moreover, this plant has
been reported that the extracts of leaves had antioxidants which were phenolic compounds. In
this work, the antioxidant activity of T. laurifolia leaves was investigated under subcritical
conditions. The preliminary extraction was prepared by various amounts of T. laurifolia powder
between 0.1 to 0.5 grams, extraction temperature between 160 to 240°C, and extraction time
between 1 to 9 minutes. Subcritical extraction technique was applied with 99.9% ethanol as a
solvent. The total phenolic content (TPC) was evaluated by using the Folin-Ciocalteu method
with UV-visible spectrophotometer at 750 nm. The results indicated that the effect of
temperature and time affected the TPC. The highest TPC obtained was 45.42 mg GAE per g.
The optimum condition was at 0.1:50 of TL:EtOH, 240°C of temperature, and 1 min of reaction
time.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2024
Modified:
2025-03-05
Issued:
2025-03-05
BibliograpyCitation :
In Thai Institute of Chemical Engineering and Applied Chemistry. The 33st Thai Institute of Chemical Engineering and Applied Chemistry International Conference (TIChE 2024) (pp.180-185). Bangkok : Thai Institute of Chemical Engineering And Applied Chemistry
eng
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Nichapa Areepong
| Title | Contributor | Type |
|---|---|---|
| Extraction of Thunbergia laurifolia Lindl. with subcritical fluid technique
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Nichapa Areepong;Veronica Winoto | บทความ/Article |
Veronica Winoto
| Title | Contributor | Type |
|---|