Fikriyah, Zakiyatul (2018) Pengaruh lama fermentasi dan konsentrasi substrat terhadap aktivitas antioksidan bekatul terfermentasi oleh Rizhopus oryzae. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.
|
Text (Fulltext)
13630053.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (2MB) | Preview |
Abstract
INDONESIA:
Bekatul merupakan lapisan luar dari beras yang terpisah dengan biji beras saat proses penggilingan. Kandungan senyawa aktif bekatul berupa senyawa fenolik berpotensi sebagai senyawa antioksidan. Firman Allah SWT dalam al-Quran surah As-Syu’araa ayat 7 menyebutkan, bahwa setiap tumbuhan yang diciptakan oleh-Nya adalah tumbuhan yang baik dan penuh hikmah didalamnya. Penelitian ini dilakukan untuk menentukan pengaruh lama fermentasi 3, 4, 5 hari dan konsentrasi substrat (1:1), (1:2), dan (1:3) terhadap peningkatan aktivitas antioksidan ekstrak bekatul. Fermentasi dilakukan dengan mengkombinasi variasi lama fermentasi dengan variasi konsentrasi substrat menjadi, 3 hari (1:1); 4 hari (1:1); 5 hari (1:1); 3 hari, (1:2); 4 hari (1:2); 5 hari (1:2); 3 hari, (1:3); 4 hari (1:3); dan 5 hari (1:3). Ekstrak bekatul diperoleh dengan metode maserasi menggunakan pelarut etanol p.a. Langkah akhir dilakukan pungukuran aktivitas antioksidan menggunakan metode DPPH dengan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa nilai peningkatan aktivitas antioksidan terbaik pada perlakuan lama fermentasi 5 hari dengan konsentrasi substrat (1:1) sebesar 13,37 %, dari hasil pengurangan aktivitas antioksidan dengan kultur jamur 84,43 % dengan aktivitas antioksidan tanpa kultur jamur sebesar 70,7 %.
ENGLISH:
Rice Bran is an outer layer of rice separated from rice seeds during the milling process. Active compound content of bran in the form of phenolic compounds has potential as antioxidant compound. Allah's SWT Word in Quran surah As-Syu'araa verse 7, said that every plant created by Him is a good plant and full of wisdom in it. This research was conducted to determine the influence of fermentation time of 3, 4, 5 days and substrate concentration (1: 1), (1: 2), and (1: 3) to increase the antioxidant activity of bran extract. Fermentation was done by combining variations of fermentation time with variation of substrate concentration to, 3 days (1: 1); 4 days (1: 1); 5 days (1: 1); 3 days, (1: 2); 4 days (1: 2); 5 days (1: 2); 3 days, (1: 3); 4 days (1: 3); and 5 days (1: 3). After being fermented, it was extracted using ethanol p.a to obtain phenolic compounds in rice bran extract. The final step was done by the measurement of antioxidant activity using DPPH method with UV-Vis spectrophotometer. The results was showed that the best value of antioxidant activity on 5 days treatment of fermentation with substrate concentration (1: 1) was 13.37%, from reduction of antioxidant activity on treatment with fungal culture 84,43% and antioxidant activity without fungal culture equal to 70,7%.
Item Type: | Thesis (Undergraduate) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Supervisor: | Jannah, Akyunul and Hanapi, Ahmad | |||||||||
Contributors: |
|
|||||||||
Keywords: | Aktivitas Antioksidan; Rizhopus oryzae; Bekatul; DPPH; Fermentasi; Konsentrasi Substrat; Lama Fermentasi; Antioxidant Activity; Rizhopus oryzae; Rice Bran; Fermentation; Substrate Concentration; Fermentation time | |||||||||
Departement: | Fakultas Sains dan Teknologi > Jurusan Kimia | |||||||||
Depositing User: | Heni Kurnia Ningsih | |||||||||
Date Deposited: | 15 Mar 2019 08:28 | |||||||||
Last Modified: | 15 Mar 2019 08:28 | |||||||||
URI: | http://etheses.uin-malang.ac.id/id/eprint/13397 |
Downloads
Downloads per month over past year
Actions (login required)
View Item |