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Title: | Penentuan Kandungan dan Aktivitas Antioksidan pada Ekstrak Metanol dan Etanol pada Kulit Nanas (Ananas comosus (L.) Merr) Lokal (Pada Fermentasi 72 Jam dengan Bakteri Lactobacillus casei) |
Other Titles: | Determination of Content and Antioxidant Activity on Methanolic and Ethanolic Extract of Local Pineapple (Ananas comosus (L.) Merr) Peel (On 72 Hours Fermentation Using Lactobacillus casei Bacteria) |
Authors: | Junior, Arvino Rudi |
Keywords: | aktivitas antioksidan;fermentasi;polifenol;metanol;etanol;antioxidant activity;fermentation;polyphenols;methanol;ethanol |
Issue Date: | 28-Nov-2022 |
Abstract: | Nanas (Ananas comosus (L.) Merr) merupakan tanaman yang banyak dibudidayakan di Indonesia. Kulit nanas mengandung senyawa antioksidan yang bermanfaat bagi tubuh. Penelitian ini bertujuan untuk menentukan kandungan fenolik total dan aktivitas antioksidan kulit nanas lokal yang difermentasi selama 72 jam oleh bakteri Lactobacillus casei. Analisis yang dilakukan dalam penelitian ini, meliputi: Analisis kadar fenolik total (KFT), kromatogram cair kinerja tinggi (KCKT), dan aktivitas antioksidan. Hasil penelitian menunjukkan bahwa proses ekstraksi menggunakan etanol pada sampel kulit nanas fermentasi memperoleh rendemen ekstrak tertinggi (53,2 ± 1,17). Uji kandungan total fenol menunjukkan bahwa ekstrak metanol sampel yang tidak difermentasi memiliki nilai KFT tertinggi (15.4 ± 1,35 mgGAE/g). Senyawa polifenol yang teridentifikasi (asam galat, katekin, EGCG (Epigallocatechin gallate)) mengalami peningkatan setelah 72 jam fermentasi. Sedangkan nilai aktivitas antioksidan tertinggi pada sampel yang tidak difermentasi dan diekstraksi dengan etanol (83,0 ± 1,04%). Komposisi dan aktivitas antioksidan dipengaruhi oleh proses fermentasi. The pineapple (Ananas comosus (L.) Merr) is one of the most cultivated plants in Indonesia. The pineapple peel contains antioxidant compounds which beneficial to the body. The study aimed to determine the polyphenol content and antioxidant activity of the peels that were fermented for 72 hours by Lactobacillus casei bacteria .The analysis in this study including: Total phenolic content (TPC), high-performance liquid chromatography (HPLC), and antioxidant activity. The results showed that the ethanol extraction process on fermented pineapple peel samples gained the highest extract yield (53.2 ± 1.17). The highest total phenolic content was in the fermented specimen in methanolic extract (15.4 ± 1.35 mgGAE/g). The identified polyphenolic compounds (gallic acid, catechins, Epigallocatechin gallate (EGCG)) increased after fermentation of 72 hours. Meanwhile, the highest antioxidant activity value was in the unfermented sample in ethanolic extract (83.0 ± 1.04%). The composition and activity of antioxidants are affected by the fermentation process. |
URI: | https://repository.uksw.edu//handle/123456789/27561 |
Appears in Collections: | T1 - Chemistry |
Files in This Item:
File | Description | Size | Format | |
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T1_652018026_Judul.pdf | 1.09 MB | Adobe PDF | View/Open | |
T1_652018026_Bab I.pdf | 255.64 kB | Adobe PDF | View/Open | |
T1_652018026_Bab II.pdf | 259.18 kB | Adobe PDF | View/Open | |
T1_652018026_Bab III.pdf | 480.05 kB | Adobe PDF | View/Open | |
T1_652018026_Bab IV.pdf | 526.2 kB | Adobe PDF | View/Open | |
T1_652018026_Bab V.pdf | 359.34 kB | Adobe PDF | View/Open | |
T1_652018026_Daftar Pustaka.pdf | 373.84 kB | Adobe PDF | View/Open |
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