Institutional Repository | Satya Wacana Christian University: Karakterisan dan Komposisi Kimia Minyak Biji Semangka (Citrulus lanatus L) Varietas Sengkaling
KARAKTERISASI DAN KOMPOSISI KIMIA MINYAK BIJI SEMANGKA
(Citrulus lanatus L) VARIETAS SENGKALING
CHARACTERIZATION AND CHEMICAL COMPOSITION OF
WATERMELON (Citrulus lanatus L) VAR. SENGKALING SEED OIL
Purwasiwi Wahyu Ariani*, Hartati Soetjipto**, dan Silvia Andini**
*
Mahasiswa Program Studi Kimia Fakultas Sains dan Matematika
**
Dosen Program Studi Kimia Fakultas Sains dan Matematika
Universitas Kristen Satya Wacana, Salatiga
Jln. Diponegoro no 52-60 Salatiga 50711 Jawa Tengah – Indonesia
652011007@student.uksw.edu
ABSTRACT
The objectives of the research are: Firstly, to determine the optimal yield of
watermelon (Citrulus lanatus L) seed oil revealed by the length of extraction time.
Secondly, to characterize the physico-chemical characteristic of watermelon seed oil.
Thirdly, to identification of chemical composition of watermelon seed oil was done using
Gas Chromatography-Mass Spectrometry (GC-MS). The extraction time had been done
in between 10 until 20 hours using n-hexane as the solvent. Data of yield and physicochemical of watermelon seed oil were analyzed by Randomized Completely Block
Design (RCBD), 6 treatments and 4 replications. As the treatment is the extraction time
which are (10; 12; 14; 16; 18; and 20 hours, respectively) and as the group is the time
analysis. The result of the study shows that the length of time extraction of watermelon
seed oil optimal at 18 hours is 16,79 ± 0,82 %. Long time extraction effect on yield,
moisture content of oil, density, peroxide and saponification value. The contrary, there
is no effect on the acid value of watermelon seed oil. GCMS analysis result, the
watermelon seed oil ingredients content of 3 chemical components, they are 9,12octadecadienoic acid 75,71%, hexadecanoic acid 18,10%, and octadecanoic acid
6,19%.
Key words: Extraction time, GC-MS, physico-chemical characteristic, watermelon seed,
watermelon seed oil,
1
(Citrulus lanatus L) VARIETAS SENGKALING
CHARACTERIZATION AND CHEMICAL COMPOSITION OF
WATERMELON (Citrulus lanatus L) VAR. SENGKALING SEED OIL
Purwasiwi Wahyu Ariani*, Hartati Soetjipto**, dan Silvia Andini**
*
Mahasiswa Program Studi Kimia Fakultas Sains dan Matematika
**
Dosen Program Studi Kimia Fakultas Sains dan Matematika
Universitas Kristen Satya Wacana, Salatiga
Jln. Diponegoro no 52-60 Salatiga 50711 Jawa Tengah – Indonesia
652011007@student.uksw.edu
ABSTRACT
The objectives of the research are: Firstly, to determine the optimal yield of
watermelon (Citrulus lanatus L) seed oil revealed by the length of extraction time.
Secondly, to characterize the physico-chemical characteristic of watermelon seed oil.
Thirdly, to identification of chemical composition of watermelon seed oil was done using
Gas Chromatography-Mass Spectrometry (GC-MS). The extraction time had been done
in between 10 until 20 hours using n-hexane as the solvent. Data of yield and physicochemical of watermelon seed oil were analyzed by Randomized Completely Block
Design (RCBD), 6 treatments and 4 replications. As the treatment is the extraction time
which are (10; 12; 14; 16; 18; and 20 hours, respectively) and as the group is the time
analysis. The result of the study shows that the length of time extraction of watermelon
seed oil optimal at 18 hours is 16,79 ± 0,82 %. Long time extraction effect on yield,
moisture content of oil, density, peroxide and saponification value. The contrary, there
is no effect on the acid value of watermelon seed oil. GCMS analysis result, the
watermelon seed oil ingredients content of 3 chemical components, they are 9,12octadecadienoic acid 75,71%, hexadecanoic acid 18,10%, and octadecanoic acid
6,19%.
Key words: Extraction time, GC-MS, physico-chemical characteristic, watermelon seed,
watermelon seed oil,
1