Pengaruh Penambahan Jus Lidah Buaya (Aloe Vera) Terhadap Perubahan Jumlah Peroksida Dan Warna Minyak Jelantah

Silvia, Mega (2014) Pengaruh Penambahan Jus Lidah Buaya (Aloe Vera) Terhadap Perubahan Jumlah Peroksida Dan Warna Minyak Jelantah. Sarjana thesis, Universitas Brawijaya.

Abstract

Pemakaian minyak berulang akan merubah sifat kimia dan fisik. Contoh kerusakan yang terjadi misalnya peningkatan jumlah peroksida dan warna minyak menjadi lebih gelap. Jumlah peroksida yang tinggi (>2 meq/kg) menyebabkan penyakit seperti kanker, penyempitan pembuluh darah, dll. Antioksidan adalah senyawa kimia yang menghambat kerusakan lemak akibat proses oksidasi. Lidah buaya mengandung antioksidan seperti vitamin A, C, E, lignins, dll yang berperan aktif menghentikan reaksi oksidasi. Tujuan penelitian ini adalah untuk mengetahui pengaruh penambahan jus lidah buaya terhadap perubahan jumlah peroksida dan perubahan jumlah absorbansi warna pada minyak jelantah. Penelitian ini menggunakan rancangan acak lengkap (RAL) desain split plot atau desain petak 4x5x2. Variabel independennya adalah penambahan jus lidah buaya (0ml, 16ml, 32ml, 48ml dalam 100 ml minyak jelantah) dan frekuensi penggorengan (penggorengan ke-1, ke-2, ke-3, ke-4, ke-5) sedangkan variabel dependen adalah perubahan jumlah peroksida (meq/kg) dan absorbansi warna. Uji statistik yang digunakan adalah split plot anova (95%) dan post hoc (95%). Hasil penelitian menunjukkan bahwa ada pengaruh penambahan jus lidah buaya dan frekuensi penggorengan terhadap penurunan jumlah peroksida (p = 0,019), tetapi tidak ada pengaruh penambahan jus lidah buaya dan frekuensi penggorengan terhadap penurunan jumlah absorbansi warna (p = 0,448). Kesimpulannya, ada pengaruh penambahan jus lidah buaya dan frekuensi penggorengan terhadap penurunan jumlah peroksida dengan penurunan terbaik sebesar 44%, hal ini dikarenakan antioksidan pada Aloe vera yang dapat menghambat proses oksidasi.

English Abstract

Repeated used cooking oil will change the chemical and physical properties. The examples of damage such as increasing peroxide level and oil colors become darker. High peroxide (>2 meq/kg) is able to cause diseases such as cancer, constriction of blood vessels, etc. Antioxidants are chemical compounds that inhibit the breakage of fat due to oxidation process. Aloe vera contain antioxidants, such as vitamin A, C, E, lignin, etc which active in oxidation reaction inhibition. The purposed of this study were to determine the effect of Aloe vera juice addition on peroxide level and absorbance color number of re-used cooking oil. This study used a complete randomized split plot design or 4x5x2 design. The independent variable were various volume of Aloe vera juice addition (0ml, 16ml, 32ml, 48ml in 100ml re-used cooking oil) and frequency of frying (1st, 2nd, 3rd, 4th, 5th) while the dependent variable were the peroxide level (meq/kg) and absorbance color number. Statistical test which used split plot anova (95%) and poct hoc test (95%). The result showed that there was effect of Aloe vera juice addition in decreasing peroxide level (p-value = 0,019), but Aloe vera juice addition didn’t give effect in absorbance color number decreasing (p-value = 0,448). In conclusion, there is effect of Aloe vera juice addition on decrease peroxide level of re-used cooking oil with the best result of decrease peroxide level is 44%, it’s because of antioxidant in Aloe vera which active in oxidation reaction inhibition.

Item Type: Thesis (Sarjana)
Identification Number: SKR/FK/2014/127/051401786
Subjects: 600 Technology (Applied sciences) > 613 Personal health and safety > 613.2 Dietetics
Divisions: Fakultas Kedokteran > Ilmu Gizi
Depositing User: Hasbi
Date Deposited: 18 Mar 2014 09:34
Last Modified: 21 Oct 2021 07:19
URI: http://repository.ub.ac.id/id/eprint/124093
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