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DAFTAR ISI

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HALAMAN JUDUL....................................................................................... i

HALAMAN PERSEMBAHAN..................................................................... ii

HALAMAN MOTTO..................................................................................... iii

HALAMAN PERNYATAAN......................................................................... iv

HALAMAN PEMBIMBINGAN................................................................... v

HALAMAN PENGESAHAN........................................................................ vi

RINGKASAN.................................................................................................. vii

PRAKATA....................................................................................................... ix

DAFTAR ISI.................................................................................................... xi

DAFTAR TABEL............................................................................................ xiv

DAFTAR GAMBAR ....................................................................................... xv

DAFTAR LAMPIRAN................................................................................... xvi

BAB 1. PENDAHULUAN............................................................................. 1

1.1 Latar Belakang............................................................................ 1

1. R!"!#an Ma#ala$....................................................................... 41.% T!&!an Penel't'an........................................................................ 4

1.( Man)aat Penel't'an...................................................................... 4

BAB . TINJAUAN PUSTAKA..................................................................... 5

.1 B!a$ Naga Mera$ * Hylocereus polyrhizus)............................... 52.1.2 Klasifikasi Buah Naga Merah.............................................. 5

2.1.2 Morfologi Buah Naga Merah .............................................. 5

2.1.3 Kandungan Kulit dan Daging Buah Naga Merah................ 2.1.4 Khasiat dan Kegunaan Buah Naga Merah .......................... 1!

. +hlorhexidine............................................................................... 11

.% Lactobacillus acidophilus............................................................. 12

2.3.1 Klasifikasi dan Morfologi L. acidophilus............................ 122.3.2 Karakteristik L. acidophilus ............................................... 13

.( Str!kt!r Sel!,!ng Sel Bakter'.................................................. 14

.- Met/e U&' Da0a Ha",at Bakter'............................................. 15

. Met/e Ek#trak Etanl .............................................................. 15

.2 Interak#' Kan/!ngan K'"'a Ek#trak K!l't /an Dag'ng B!a$

Naga Mera$ /engan L. acidophilus............................................ 1"

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2.#.1 $lkaloid................................................................................ 1#

2.#.2 %lavonoid ............................................................................. 1

2.#.3 &er'enoid.............................................................................. 12.#.4 (itamin )............................................................................. 1*

.3 Kerangka Kn#e4........................................................................ 2!

.5 H'4te#'# ...................................................................................... 2!

BAB %. METODE PENELITIAN.................................................................. 21

%.1 Jen'# Penel't'an............................................................................ 21

%. Te"4at /an 6akt! Penel't'an.................................................... 21

%.% 7ar'a,el Penel't'an...................................................................... 213.3.1 (aria+el Be+as ..................................................................... 21

3.3.2 (aria+el &erikat ................................................................... 21

3.3.3 (aria+el &erkendali .............................................................. 22

%.( De)'n'#' O4era#'nal Penel't'an.................................................. 223.4.1 Bakteri L. acidophilus  ........................................................ 22

3.4.2 Buah Naga Merah................................................................. 223.4.3 ,kstrak Kulit dan Daging Buah Naga Merah....................... 22

3.4.4 Da-a Ham+at terhada' ertum+uhan  L. acidophilus.......... 23

%.- Sa"4el Penel't'an.......................................................................... 233.5.1 Besar /am'el ....................................................................... 23

3.5.2 engelom'okkan /am'el..................................................... 24

3.5.3 Kriteria Buah Naga Merah................................................... 24

%. Alat /an Ba$an............................................................................. 253.".1 $lat enelitian ..................................................................... 25

3.".2 Bahan enelitian .................................................................. 2"

%.2 Pr#e/!r Penel't'an....................................................................... 2#3.#.1 &aha' ersia'an ................................................................... 2#

3.#.2 &aha' erlakuan .................................................................. 31

3.#.3 &aha' engukuran Diameter 0ona Ham+at ........................ 32

%.3 Al!r Penel't'an.............................................................................. 34

%.5 Anal'#'# Data ................................................................................. 35

BAB (. HASIL DAN PEMBAHASAN.......................................................... 3"

(.1 Ha#'l Penel't'an............................................................................ 3"

(. Pe",a$a#an................................................................................. 4!

BAB -. KESIMPULAN DAN SARAN.......................................................... 45

-.1 Ke#'"4!lan.................................................................................. 45

-. Saran............................................................................................. 45

DAFTAR PUSTAKA...................................................................................... 4"

LAMPIRAN.................................................................................................... 5!

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DAFTAR TABEL

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2.1 Kandungan gii +uah naga merah (Hylocereus polyrhizus).................

2.2 Kandungan gii kulit +uah naga merah (Hylocereus polyrhizus)......... *4.1 Nilai ratarata diameter mm dan standar deviasi ona ham+at

kelom'ok 'enelitian terhada' 'ertum+uhan L. acidophilus............... 3#

4.2 Hasil ui normalitas dengan Kolmogorov-Smirnov............................... 34.3 Hasil ui homogenitas dengan Levene-Test ........................................... 3*

4.4 Hasil ui +eda dengan Kruskal-Wallis................................................... 3*

4.5 Hasil ui +eda dengan ann-Whitney................................................... 4!

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DAFTAR GAMBAR 

Halaman

2.1 Buah Naga Merah  Hylocereus polyrhizus).......................................... #

2.2 er+edaan total fenolik 'ada +uah naga merah  H. polyrhizus dan +uah naga 'utih  H. undatus................................................................ 1!

2.3 Bakteri L. acidophilus dengan 'e6arnaan gram................................... 12

2.4 /truktur selu+ung sel L. acidophilus.................................................... 142.5 /truktur Betanin7 Beta8-anin 'ada 9m+i Bit....................................... 1#

3.1 a emisahan kulit dan daging +uah naga merah................................ 2

+ emotongan kulit +uah naga merah................................................ 23.2 a erendaman sim'lisia 'ada 'elarut etanol *":.............................. 2*

+ engua'an ekstrak menggunakan rotary evaporator ...................... 2*3.3 a engeringan daging +uah 'ada freee dr-er.................................... 2*

+ ,kstrak kulit dan daging +uah naga merah..................................... 2*3.4 em+uatan " lu+ang sumuran 'ada media M;/$.............................. 31

3.5 engukuran ona ham+at...................................................................... 33

4.1   0ona ham+at 'ada lu+ang sumuran........................................................... 3"4.2 Histogram ratarata diameter ona ham+at 'ertum+uhan

 L. acidophilus....................................................................................... 3

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DAFTAR LAMPIRAN

Halaman

$. erhitungan ;endemen ,kstrak............................................................ 5!

B. erhitungan ;umus engen8eran......................................................... 51

). %oto Hasil enelitian............................................................................. 52

D. Hasil engukuran 0ona Ham+at mm ,kstrak Kulit dan DagingBuah Naga Merah  Hylocereus polyrhizus &erhada' ertum+uhan

 L. acidophilus....................................................................................... 53

,. $nalisis Data ........................................................................................ 54

,.1 Hasil 9i Normalitas Data  Kolmogorov Smirnov ....................... 54,.2 Hasil 9i Homogenitas Data  Levene-Test  ................................... 55

,.3 Hasil 9i Beda Kruskal Wallis ....................................................... 55,.4 Hasil 9i Beda $ntar Kelom'ok erlakuan  ann-Whitney ...... 5"

%. %oto $lat dan Bahan enelitian............................................................ #1

%.1 $lat enelitian................................................................................ #1%.2 Bahan enelitian ............................................................................ #5