Hosea, Natasya Angeline (2018) Kajian aktivitas dan stabilitas antioksidan ekstrak kasar bunga lawang kering (illicium verum hook.) = Study of antioxidant activity and stability of dried star anise (illicium verum hook.). Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Bunga lawang (Illicium verum Hook) merupakan buah kering berwarna
cokelat kemerahan dengan bentuk bintang delapan ujung. Bunga lawang biasanya
dimanfaatkan sebagai tanaman obat dan rempah-rempah. Penelitian sebelumnya
menunjukkan bunga lawang memiliki potensi sebagai antioksidan alami. Pada
penelitian ini, bunga lawang kering akan diekstraksi menggunakan metode
maserasi dengan dua pelarut yang memiliki polaritas yang berbeda, yaitu etanol
(polar) dan aseton (semi polar) selama 24, 48, dan 72 jam. Aktivitas antioksidan,
total kandungan fenolik, dan total flavonoid dari ekstrak kasar dianalisis dengan
metode spektrofotometri untuk menentukan perlakuan ekstraksi terbaik. Pelarut
etanol dan waktu ekstraksi 72 merupakan perlakuan terbaik untuk ekstraksi. Setelah
itu, ekstrak bunga lawang dengan pelarut etanol yang dimaserasi selama 72 jam
akan diuji stabilitasnya terhadap suhu dan waktu pemanasan. Pemanasan dilakukan
pada suhu 60, 70, dan 80oC selama 15 dan 30 menit. Aktivitas antioksidan dari
bunga lawang kering stabil terhadap perlakuan pemanasan 60 dan 70oC selama 15
menit. Analisis fitokimia, toksisitas, dan analisis komponen dengan menggunakan
instrumen GC-MS dilakukan pada ekstrak etanol dengan waktu ekstraksi 72 jam
untuk mengetahui komponen yang berfungsi sebagai antioksidan dan aplikasi yang
tepat untuk ekstrak. / Star anise (Illicium verum Hook) is a dry fruit that has reddish brown color,
star-shaped with eight points. Star anise usually used as herbal medicine and spices.
The previous study shown star anise had potential as natural antioxidant. In this
research, star anise will be extracted using maceration method with two different
solvents that has different polarity such as ethanol (polar) and acetone (semi polar)
for 24, 48, and 72 hours. Antioxidant activity, total phenolic content, and total
flavonoid from the crude extract were analyzed by spectrophotometric method to
determine the best extraction treatment. Crude extract that was made with ethanol
solvent and extraction time 72 hours was choosen as the best treatment. Afterwards,
a star anise extract that macerated with ethanol solvent for 72 hours will be tested
for its stability against temperature and heating time. Stability of crude extraxt was
tested at temperature 60, 70, and 80oC for 15 and 30 minutes. Exposure of crude
extract to temperature 60 and 70oC for 15 minutes shown stable antioxidant activity.
Phytochemical analysis, toxicity, and extract composition analysis using GC-MS
instrument were performed on ethanol extract with 72 hours of extraction time to
find out which components functioned as antioxidants and to determine suitable
condition for extract application.
Item Type: | Thesis (Bachelor) |
---|---|
Creators: | Creators NIM Email ORCID Hosea, Natasya Angeline NIM00000009196 NATASYAANGELINE97@YAHOO.COM UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Eveline, Eveline NIDN0308048201 UNSPECIFIED |
Additional Information: | SK 34-14 HOS k ; 31001000232984 |
Uncontrolled Keywords: | Star anise; antioxidant; stability; temperature; heating time; Bunga lawang; antioksidan; stabilitas; suhu; waktu pemanasan |
Subjects: | T Technology > TP Chemical technology > TP368-456 Food processing and manufacture |
Divisions: | University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology |
Depositing User: | Samuel Noya |
Date Deposited: | 21 May 2021 05:52 |
Last Modified: | 08 May 2024 11:20 |
URI: | http://repository.uph.edu/id/eprint/35841 |