Estiningthyas, Rahmadhani (2011) Uji Aktivitas Antioksidan Daun Mangrove Rhizophora Mucronata Dari Perairan Yang Berbeda. Sarjana thesis, Universitas Brawijaya.
Abstract
Tujuan dari penelitian ini adalah untuk mengetahui perbedaan aktivitas antioksidan ekstrak daun Rhizophora mucronata dari perairan Surabaya dan Sendang Biru terhadap radikal bebas DPPH dan mengetahui senyawa yang terkandung dalam ekstrak daun R.mucronata yang memiliki aktivitas antioksidan. Untuk uji aktivitas antioksidan DPPH menggunakan spektrofotometri UV Visibel sedangkan untuk mengetahui senyawa antioksidan pada ekstrak daun R.mucronata dilakukan uji GCMS. Berdasarkan uji fitokimia diketahui bahwa komponen kimia pada R.mucronata adalah alkaloid, flavonoid dan tanin. IC50 (konsentrasi penghambat radikal bebas 50%) terhadap radikal bebas DPPH pada ekstrak R.mucronata dari perairan Surabaya sebesar 44,740 ppm, dari perairan Sendang Biru sebesar 37,837 ppm sedangkan IC50 vitamin C sebesar 1,576 ppm. Berdasarkan hasil tersebut dapat dikatakan bahwa aktivitas antioksidan terbaik diperoleh dari ekstrak daun R.mucronata dari perairan Sendang Biru dengan IC50 sebesar 37,834 ppm sedangkan R.mucronata dari perairan Surabaya IC50 nya sebesar 44,740 ppm. Adanya perbedaan kemampuan antioksidan dari perairan yang berbeda diduga karena adanya perbedaan kondisi perairan meliputi kandungan logam Pb dan tekstur sedimen. Senyawa yang diduga sebagai antioksidan hasil uji GC-MS ekstrak daun R.mucronata dari Sendang Biru (memiliki aktivitas antioksidan yang terbaik) antara lain 1,2-benzenediol pyrocatechol; eugenol; phenol,-2-methoxy-5-propenyl, isoeugenol, isozonarol, o-tert-butil-p-cresol dan squalen.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FPR/2011/147/051203396 |
| Subjects: | 300 Social sciences > 333 Economics of land and energy > 333.9 Other natural resources > 333.91 Water and lands adjoining bodies of water |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Manajemen Sumberdaya Perairan |
| Depositing User: | Endang Susworini |
| Date Deposited: | 06 Nov 2012 15:40 |
| Last Modified: | 21 Oct 2021 07:40 |
| URI: | http://repository.ub.ac.id/id/eprint/132822 |
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