a Tesis Cocoa Butter Subtitute

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Julia Maulina : Pembuatan pengganti mentega coklat (cocoa butter substitutes) melalui reaksi ...,2001 .USU e-Repository © 2008

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aTesis Cocoa Butter Subtitute

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Julia Maulina : Pembuatan pengganti mentega coklat (cocoa butter substitutes) melalui reaksi ...,2001 .USU e-Repository © 2008

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JudulTesis

Nama MahasiswiNomorPokokProgram Studi

PEMBUATAN PENGGANTI MENTEGA COKLAT(COCOA BUTTER SUBSTITUTES) MELALUIREAKSIINTERESTERIFIKASI ANTARA MINYAKKELAPA, STEARIN KELAPA SAWIT DENGANMENGGUNAKAN KATALIS NATRIUM ETOKSIDA

JULIAMAULINA992106009KIMIA

MenyetujuiKomisi Pembimbing :

EMATR:Z:::Ketu a

M.Sc.

I

(Dr. JANSEN SILALAHI, M,App.Sc., Apt)Anggota

Ketua Program Studi,

Tangga! Lulus : 29 Maret 2001

j1.i~(Drs. JAMARAN KABAN, M,Sc)

Anggota

Julia Maulina : Pembuatan pengganti mentega coklat (cocoa butter substitutes) melalui reaksi ...,2001 .USU e-Repository © 2008

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INTISARI

Reaksi interesterifikasi pada lemak dan minyak akan menyebabkan pertukaran

antara satu asam lemak dengan asam lemak yang lain didalam molekul trigliserida atau

antara trigliserida yang dapat mengubah sifat kimia dan fisika pada lemak.

Dalam penelitian ini dilakukan pembuatan Pengganti Mentega Coklat (Cocoa

Butter Substitutes) melalui proses interesterifikasi antara Minyak Kelapa dengan Stearin

Kelapa Sawit yang menggunakan katalis Natrium Etoksida Untuk mendapatkan

Pengganti Mentega Coklat yang baik, dilakukan analisa kandungan lemak padat dengan

NMR tipe BS-684 dan pengukuran titik lebur.

Dengan menganalisa berbagai perbandingan hasil interesterifikasi Minyak Kelapa

dengan Stearin Kelapa Sawit (50gr:50gr; 65gr:35gr; 70gr:30gr; 75gr:25gr ),

diperoleh titik lebur (47,5°C; 38°C; 36,5°C; 31°C) dan diperoleh kandungan lemak padat

pada temperaturtubuh (35°C) masing-masing (17,63%; 5,97%; 4,29%; 12,71%).

Berdasarkan persyaratan mentega coklat yang padat pada suhu kamar dan meleleh

pada suhu tubuh serta kandungan lemak padat yang rendah, maka interesterifikasi antara

Minyak Kelapa dengan Stearin Kelapa Sawit dengan perbandingan (70gr : 30gr)

memenuhi persyaratan sebagai Pengganti Mentega Coklat .

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ABSTRACT

Interesterification reaction involves intramolecular and intermolecular exchange of

acyl groups among triglycerides resulting in the changes on the physical and chemical

properties of the result triglyserides.

The experiment preparation Cocoa Butter Substitutes (CBS) has been done by

interesterification process between Coconut Oil and Stearin Palm Oil using sodium

ethoxides as katalized. In order to result good well Cocoa Butter Substitutes, analyzed by

using spectroscopy Nuclear Magnetic Resonance (NMR) BS-684 to obtained Solid Fat

Content (SFC) and measured melting point.

Analyzed result interesterification reaction is done between coconut oil and stearin

palm oil with comparison (50g:50g; 65g:35g; 70g:30g; 75g:25g), are found solid fat

content at body temperature (35 DC) were (17,63%; 5,97%; 4,29%; 12,71%) respectively.

Based on the properties of cocoa butter is solid at room temperature and melt at

body temperature with low solid fat content, so that result of interesterification reaction is

done between coconut oil and stearin palm oil with comparison (70g:30g) is suitable like

cocoa butter substitutes.

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