vi DAFTAR ISI HALAMAN JUDUL........................................................................................ i HALAMAN PENGESAHAN.......................................................................... ii SURAT PERNYATAAN................................................................................. iii PRAKATA ....................................................................................................... iv DAFTAR ISI .................................................................................................... vi DAFTAR SINGKATAN ................................................................................. ix DAFTAR TABEL ............................................................................................ x DAFTAR GAMBAR ....................................................................................... xi DAFTAR LAMPIRAN .................................................................................... xii INTISARI......................................................................................................... xiii BAB I PENDAHULUAN ................................................................................ 1 1.1. Latar Belakang ........................................................................................ 1 1.2. Rumusan masalah ................................................................................... 3 1.3. Tujuan penelitian .................................................................................... 3 1.3.1. Tujuan Umum ...................................................................................... 3 1.3.2. Tujuan Khusus...................................................................................... 3 1.4. Manfaat Penelitian .................................................................................. 4 1.4.1. Manfaat Teoritis ................................................................................... 4 1.4.2. Manfaat Praktis .................................................................................... 4 BAB II TINJAUAN PUSTAKA...................................................................... 5 2.1. MDA (Malondialdehyde) ....................................................................... 5 2.1.1. Definisi ................................................................................................. 5 2.1.2. Proses Terbentuknya Malondialdehyde (MDA) .................................. 5 2.1.3. Malondialdehyde (MDA) Sebagai Penanda Stres Oksidatif ................ 6 2.1.4. Faktor – faktor yang mempengaruhi kadar MDA ................................ 7
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vi
DAFTAR ISI
HALAMAN JUDUL........................................................................................ i
HALAMAN PENGESAHAN.......................................................................... ii
SURAT PERNYATAAN................................................................................. iii
PRAKATA....................................................................................................... iv
DAFTAR ISI.................................................................................................... vi
DAFTAR SINGKATAN ................................................................................. ix
DAFTAR TABEL............................................................................................ x
DAFTAR GAMBAR ....................................................................................... xi
DAFTAR LAMPIRAN.................................................................................... xii
INTISARI......................................................................................................... xiii
BAB I PENDAHULUAN................................................................................ 1
1.1. Latar Belakang........................................................................................ 1
1.2. Rumusan masalah ................................................................................... 3
1.3. Tujuan penelitian .................................................................................... 3
1.3.1. Tujuan Umum ...................................................................................... 3
1.3.2. Tujuan Khusus...................................................................................... 3
DAFTAR PUSTAKA ...................................................................................... 35
ix
DAFTAR SINGKATAN
AEERB : Aqueous Enzymatic Extract from Rice Bran
CAT : Catalase
DNA : Deoxyribo Nucleic Acid
GPx : Glutathione peroxidase
GR : Glutathione reductase
GST : Glutathione transferase
MDA : Malondialdehyde
MSG : Monosodium Glutamat
O : Oxide
O2- : Radical superoxide
O2H : Perhydroxyl
OH : Hydroxyl
OH- : Radical hydroxile
PUFA : Poly Unsaturated Fatty Acid
ROS : Reactive Oxygen Species
SOD : Superoxide dismutase
TBARS : Thiobarbituric acid reactive substance
WHO : World Health Organisation
LO2 : Radikal peroksil lipid
x
DAFTAR TABEL
Tabel 4.1. Rerata berat badan dan kadar MDA pada tiap kelompok serta
hasil uji anova dan uji Kruskal Wallis........................................... 26
Tabel 4. 2. Hasil uji Mann Whitney................................................................. 28
xi
DAFTAR GAMBAR
Gambar 2. 1. Struktur Kimia Malondialdehyde ............................................. 5
Gambar 2. 2. Mekanisme peroksidasi PUFA................................................. 6
Gambar 2. 3. Reaksi pembentukan senyawa kompleks MDA-TBA
berwarna merah muda yang dapat diukur serapannya pada
panjang gelombang 520 nm...................................................... 9
Gambar 2. 4. Bagian-bagian Gabah ............................................................... 10
Gambar 3. 1. Skema Kerja Penelitian ............................................................ 24
Gambar 4.1. Rerata kadar MDA pada tiap kelompok................................... 30
xii
DAFTAR LAMPIRAN
Lampiran 1. Hasil Penelitian......................................................................... 40
Lampiran 2. Hasil Olah data SPSS ............................................................... 41
Lampiran 3. Surat Keterangan Penelitian Laboratorium Kimia ................... 50
Lampiran 4. Surat Penelitian Laboratorium Penelitian dan PengujianTerpadu..................................................................................... 51