Thesis

Analysis of Antioxidant Properties and Phytochemical Identification of Native Papuan Tree Bark

---

“Kamlowelen” and “Kayu Bawang” are native papuan trees that have never been
investigated before. Both tree barks are commonly used as a seasoning, tea, and medicine. In the
present study, total phenolic content (TPC), DPPH assay, and phytochemical screening of tree barks
extracted using five different solvents (Methanol, acetone, ethyl acetate, chloroform, and hexane)
were analyzed. Among five solvents, methanol extract exhibit the lowest IC50 values (496.5±60.29 μg
extract/ml at “Kamlowelen” and 1166.08±71.75 μg extract/ml for “Kayu Bawang”), while the highest
IC50 values was found in hexane extract (50763.61±12299.76 μg extract/ml for “Kamlowelen” and
42694.59±11535.01 μg extract/ml for “Kayu Bawang”). In addition, the highest total phenolic activity
was also observed in methanol extract for both tree barks (142.49±33.96 mg GAE/g extracts for
“Kamlowelen” and 14.97±0.54 mg GAE/g extracts for “Kayu Bawang”). As for the phytochemical
screening, methanol and acetone extract showed the best result as they were able to extract the
most phytochemical compounds classes compared to other solvent. The result of this study showed
that the choice of solvent for extraction can affect the result of total phenolic content, antioxidant
activity, and phytochemical screening from both tree barks significantly. Between two tree barks,
“Kamlowelen” shows a potential to be an antioxidant agent as it exhibits similar % inhibition to
ascorbic acid, however it needs to be used in higher concentration. As for “Kayu Bawang” it only has
little potential to be antioxidant.

---

Availability

Detail Information

Series Title

-

Call Number

FSN 22-011

Publisher

i3L, Jakarta : i3L, Jakarta., 2022

Collation

-

Language

English

ISBN/ISSN

-

Classification

NONE

Content Type

-

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

Antioxidant properties
Total phenolic content
Phytochemical screening
“Kamlowelen”
“Kayu Bawang”

Specific Detail Info

-

Statement of Responsibility

-

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment