scholarly journals Kualitas Minyak Blend Kelapa Kopra dan Minyak Kelapa Sawit ditinjau dari Kadar Air, Kadar Asam Lemak Bebas dan Bilangan Peroksida

2020 ◽  
Vol 11 (1) ◽  
pp. 1-8
Author(s):  
Asyti Febliza ◽  
Oktariani Okatariani ◽  
Aisyah Meisya Putri
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Peroxide Value ◽  
Coconut Oil ◽  
Edible Oil

This research examined the quality of edible oil from Crude Coconut Oil (CCO) and Palm Coconut Oil (PCO) and their blends with CCO : PCO proportional was about 40:60 and 60:40, respectively. The quality of these samples was based on water proportion, free fatty acid (FFA) and peroxide value (PV) contained. This study was conducted to improve the quality of edible oil. SNI 3741-2013 was used as method of this research, which the result compared with the SNI standard for edible oil. Results of this research for water proportion in oil samples PCO, CCO, CCO (40) : PCO (60) and CCO (60):PCO  (40)  in  order  were  0.000122; 0.010905; 0.001878; 0.030996. The FFA proportions for them were 0.02; 0.01; 0.02; 0.02 and PV values were 7.10; 3.00; 6.10; 5.10, respectively. From this result, we can conclude that all samples had good quality for water proportion and FFA, except for peroxide value (PV) mark which had the higher mark compared to the SNI standard. We also concluded that CCO became the best quality of edible oil compared to others. 

scholarly journals Chemical quality of extracted oil and sensory quality of vacuum fried jackfruit (Artocarpus heterophyllus Lam.) pulp as influenced by frying cycle

2019 ◽  
pp. 130-141
Author(s):  
Jason Braga ◽  
Lorina Galvez ◽  
Roberta Lauzon ◽  
Yan Diczbalis
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Peroxide Value ◽  
Oil Quality ◽  
Coconut Oil ◽  
Acid Value ◽  
State University ◽  
Frying Cycle ◽  
Post Hoc

Oil quality is important in the production of quality and safe fried food products. This study aimed to assess the quality of oil extracted from vacuum-fried jackfruit pulp products and the fried products at Visayas State University (VSU), Baybay City, Leyte, Philippines, with the coconut oil used until 20 frying cycles. The percent free fatty acid (FFA), acid value (AV) and peroxide value (PV) of the oil extracted from the product (1st, 5th, 10th, 15th & 20th frying cycle vacuum-fried jackfruit pulp) was determined employing titrimetric method. Quality descriptions and acceptability of the product were obtained through sensory evaluation, following standard protocols. Data were subjected to analysis of variance for significance and post hoc test to compare means. Results revealed that the increase of the frying cycle significantly (p≤0.05) increased the peroxide value, while no significant effect was noted with free fatty acid and acid values. Aroma, taste and general acceptability of the product were significantly affected by the increase in number of frying cycle of oil due to the quality changes of the oil being used. No significant effect was observed for color and texture acceptability with frying cycle. Generally, acceptability of the product decreased with increasing frying cycle. The oil can be recycled at least 10 frying cycles to produce quality and safe vacuum-fried jackfruit product for the consuming public. The reusing of oil provides cost effectiveness in the vacuum-fried jackfruit processing.

scholarly journals PERBEDAAN SUHU PENGOLAHAN DENGAN METODE STEAM JACKETED SEDERHANA TERHADAP MUTU MINYAK DARI LIMBAH KEPALA IKAN MACKEREL Different Processing Temperatures of Simple Steam Jacketed Method toward Quality of Crude Fish Oil from Head Wasteof Mackerel

2016 ◽  
Vol 11 (2) ◽  
pp. 78
Author(s):  
Rukmana Rahayu Lestari ◽  
Ratna Ibrahim ◽  
Putut Har Riyadi
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Fish Oil ◽  
Iodine Value ◽  
Peroxide Value ◽  
Acid Value ◽  
Omega 3 ◽  
Oil Processing ◽  
Omega 6

ABSTRAK   Proses pengolahan minyak ikan kasar dengan metode steam jacketed di salah satu perusahaan pengolahan hasil perikanan menggunakan bahan baku campuran limbah padat pengalengan ikan Mackerel dengan suhu yang tinggi 90-100 °C menghasilkan produk yang belum memenuhi persyaratan mutu minyak ikan secara nasional. Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan suhu pengolahan minyak ikan kasar ≤ 85 °C dari kepala ikan Mackerel tanpa insang dengan metode steam jacketed sederhana terhadap mutu produknya serta untuk mengetahui suhu dan lama waktu pengolahan yang menghasilkan minyak ikan kasar yang memenuhi persyaratan mutu secara nasional maupun internasional. Materi penelitian berupa kepala ikan Mackerel tanpa insang. Penelitian dilakukan dengan metode eksperimental laboratoris. Percobaan dirancang dengan Rancangan Percobaan Kelompok dengan perlakuan suhu berbeda (85 °C, 75 °C, dan 65 °C). Masing-masing perlakuan diulang tiga kali. Variabel mutu yang diamati adalah asam lemak bebas, bilangan peroksida, bilangan iod, kadar air, rendemen dan nilai sensori, serta uji profil asam lemak untuk produk yang terbaik. Data dianalisis menggunakan ANOVA dan perbedaan diantara perlakuan diuji dengan Uji Tukey. Hasil penelitian menunjukkan bahwa perbedaan suhu pengolahan minyak ikan kasar dari kepala ikan Mackerel tanpa insang dengan metode steam jacketed sederhana memberikan pengaruh berbeda nyata terhadap nilai asam lemak bebas, bilangan peroksida, bilangan iod, dan rendemen, tetapi tidak menyebabkan perbedaan nyata terhadap nilai sensori. Mutu produk terbaik yaitu produk yang diolah pada suhu 65 °C selama 20 menit, produk tersebut mengandung asam lemak omega-3 dan omega-6.   Kata kunci: Kepala ikan Mackerel, Minyak ikan kasar, Steam jacketed sederhana     ABSTRACT  The process of crude fish oil processing using the steam jacketed method in a fish product processing company which uses the raw material of solid mixed waste of canned Mackerel at 90-100 °C result in the products which have not fulfilled the requirement of national fish oil quality. The purpose of this research is to figure out the effect of processing temperature difference in the processing of crude fish oil below or at 85 °C from gill-less Mackerel fish head using the simple steam jacketed method on the quality of the processing products. This research is also intended to figure out the temperature and duration for the processing which produces the crude fish oil to fulfill both national and international quality standard.The research materials were gill-less Mackerel fish heads. The research was conducted using laboratory experimental method. The experiments were designed into Randomized Block Design with difference temperatures (85 °C, 75 °C, and 65 °C). Each of the temperature treatments was made in triplicate. The quality variables to be observed were free fatty acid value, peroxide value, iodine value, moisture content, yield and sensory value. The quality variables which made the best treatment was then tested using the fatty acid profile test for the best crude fish oil product. The data obtained were analyzed using ANOVA, and the difference among the treatments were tested using HSD test.The research result showed that the temperature difference in crude fish oil processing from gill-less Mackerel fish heads using the simple steam jacketed method gave significantly different effect on free fatty acid value, peroxide value, iodine value, and yield. However, did not give significantly different effect on sensory value. The best product quality was obtained from the product which was processed at 65 °C for 20 minutes, the product contains fatty acid omega-3 and omega-6. Keywords: Crude fish oil, Mackerel fish head, Simple steam jacketed method

scholarly journals Kualitas Minyak Bunga Matahari Komersial dan Minyak Hasil Ekstraksi Biji Bunga Matahari (Helianthus annuus L.)

2012 ◽  
Vol 12 (1) ◽  
pp. 59 ◽  
Author(s):  
Dewa G Katja
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Moisture Content ◽  
Helianthus Annuus ◽  
Peroxide Value ◽  
Sunflower Seed ◽  
Seed Oil ◽  
Helianthus Annuus L ◽  
Sunflower Seed Oil

KUALITAS MINYAK BUNGA MATAHARI KOMERSIAL DAN MINYAK HASIL EKSTRAKSI BIJI BUNGA MATAHARI (Helianthus annuus L.) ABSTRAK Minyak komersial dan minyak hasil ekstrasi dari biji bunga matahari melalui uji kadar air, kadar asam lemak bebas, bilangan peroksida. Analisis hasil ekstrak biji bunga matahari diperoleh kadar air 0,43%, kadar asam lemak bebas 0,47% dan bilangan persoksida 5,22 mek/kg. analisis minyak komersial diperoleh kadar air 0,21%, kadar asam lemak bebas 0,28% dan bilangan peroksida 4,18 mek/kg. Hasil analisis dengan kromatografi gas kedua sampel menunjukkan kadar asam lemak bebas berbeda.       Berdasarkan uji kualitas yang dilakukan terhadap kedua sampel yang dianalisis terdapat hasil yang diperoleh tidak memenuhi syarat yang ditentukan yakni kadar asam lemak bebas 0,08% dan bilangan peroksida 2 mek/kg. Kata kunci: Asam lemak bebas, bilangan proksida, minyak biji bunga matahari  QUALITY OF COMMERCIAL SUNFLOWER OIL AND OIL EXTRACTION SEEDS SUNFLOWER (Helianthus annuus L.) ABSTRACT Experimental study of analyzing the extract oil from sunflower seed compare with the commercial sunflower seed oil according to the company standard which includes determining of moisture content, free fatty acid content, peroxide value and the fatty acids compositions is reported in this paper. The result show that the moisture content of the extract oil is 0,43%, free fatly acid content is 0,47%, and the peroxide value is 5,22% mek/Kg. For the commercial sunflower seed oil company product that is 0,21% for the moisture, free fatty acid is 0,28% and the peroxide value is 4,89 mek/Kg. The gas chromatography analysis indicated that the most fatty acid from both samples is linoleic acid. The quality of the extract sunflower seed oil has not been improved to conform with the commercial quality according to the company standard, that is 0,08% for the free fatty acid and 2 mek/Kg for the peroxide value. Keywords: Free fatty acid, peroxide value, sunflower seeds oil

scholarly journals TRADITIONAL COCONUT OIL PURIFICATION USING ACTIVATED CHARCOAL COCONUT SHELL ADSORBENTS

2020 ◽  
Vol 4 (1) ◽  
pp. 37
Author(s):  
Nining Putri Kurnianingsih ◽  
Maherwati Maherawati ◽  
Tri Rahayuni
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Activated Charcoal ◽  
Block Design ◽  
Fatty Acid Content ◽  
Coconut Oil ◽  
Coconut Shell ◽  
Oil Refining ◽  
Randomized Block Design

Coconut oil in West Kalimantan is still largely a traditional coconut oil because it has not gone through a refining process. To improve the quality of traditional coconut oil, the addition of activated charcoal can be used as an adsorbent so as to improve the quality of coconut oil. Activated charcoal can be made from materials that contain high carbon, one of which is a coconut shell. The purpose of this study was to determine the effect of adding activated charcoal to improving the quality of traditional coconut oil and the concentration of adding activated charcoal that produced the best characteristics of coconut oil. The research design used was a Randomized Block Design with one factor (coconut shell active charcoal concentration) 6 levels of treatment (0%, 1%, 2%, 3%, 4%, 5%) with 4 replications. The data obtained were analyzed using ANOVA (ɑ = 5%) if there was an influence followed by BNJ test (ɑ = 5%). The results showed that the addition of coconut shell activated charcoal with a concentration of 1% -5% to traditional coconut oil can significantly reduce free fatty acid levels. In addition, the addition of activated charcoal affects the sensory attributes of color and aroma to be better than the control (without the addition of activated charcoal). The best traditional coconut oil produced in this study is traditional coconut oil added with coconut shell activated charcoal with a concentration of 5% with chemical and sensory characteristics as follows: water content 0.138%, free fatty acid content 0.428%, saponification number 231, 9 mg KOH / g, color value 4,88, and aroma value 3,68.Keywords: adsorbent, activated charcoal, coconut oil, refining, coconut shell

scholarly journals Perubahan Mutu Minyak Kelapa dan Minyak Sawit Selama Penggorengan

Buletin Palma ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
STEIVIE KAROUW ◽  
CHANDRA INDRAWANTO
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Moisture Content ◽  
Palm Oil ◽  
Oil Quality ◽  
Coconut Oil ◽  
Thermal Reactions ◽  
Frying Process ◽  
Fatty Acid Peroxide

<p>Abstrak</p><p>Proses penggorengan akan menyebabkan perubahan mutu minyak akibat reaksi hidrolisis, oksidasi dan proses termal. Penelitian ini bertujuan untuk mengetahui perubahan mutu  minyak kelapa dan minyak sawit selama penggorengan. Minyak kelapa dan minyak sawit masing-masing digunakan untuk menggoreng kentang pada suhu 170°C selama 15 menit. Minyak tersebut digunakan untuk 3 kali penggorengan. Pada akhir penggorengan dilakukan pengambilan sampel minyak untuk dievaluasi kadar air, kadar asam lemak bebas, bilangan peroksida dan bilangan TBA (Tiobarbituric acid). Hasil penelitian menunjukkan bahwa sebelum penggorengan minyak kelapa dan minyak sawit memiliki kadar air yang hampir sama, tetapi kadar asam lemak bebas, angka peroksida dan TBA minyak kelapa lebih rendah dibanding minyak sawit. Selama penggorengan minyak kelapa dan minyak sawit menunjukkan pola perubahan kadar air yang hampir sama. Pada 1 kali dan 2 kali penggorengan kadar asam lemak bebas, angka peroksida dan angka TBA minyak kelapa dan minyak sawit cenderung berfluktuasi. Pada 3 kali penggorengan minyak kelapa memiliki kadar asam lemak bebas,  angka  peroksida  dan  angka  TBA  yang  lebih  rendah  dibandingkan  minyak  sawit.  Hasil  yang  diperoleh menunjukkan   bahwa   minyak   kelapa  lebih   stabil   terhadap   reaksi   oksidasi   dibanding   minyak   sawit   selama penggorengan.</p><p> </p><p>Pattern of Coconut Oil and Palm Oil Quality During Frying</p><p>ABSTRACT</p><p> </p><p>Frying was a process which affected the quality of oil due to hydrolysis, oxidation and thermal reactions. The aim of the research was to study the quality pattern of coconut oil and palm oil quality during frying. The oils were utilized to fry french fries at 170°C for 15 minutes and then used in frying process for 3 times. Samples of oil were taken at the end of each frying period and analyzed for its moisture, free fatty acid, peroxide and TBA (tiobarbituric acid) values. The results showed that, coconut oil and palm oil having similary moisture content before and during frying. Otherwise free fatty acid, peroxide and TBA values at coconut oil lower then palm oil. During 1 and 2 times of frying period these two oils showed fluctuation in free fatty acid, peroxide and TBA values. During 3 times of frying, coconut oil contained free fatty acid, peroxide and TBA value lower than palm oi. Thus, we consider that coconut oil was more stable to oxidation compared to palm oil during frying</p>

scholarly journals Mutu Minyak Jelantah Dengan Adsorben Biji Salak (Salacca zalacca (Gaertn.)Voss) menggunakan Parameter Bilangan Peroksida dan Asam Lemak Bebas

2019 ◽  
Vol 5 (2) ◽  
pp. 124-131
Author(s):  
Ihwan Ihwan ◽  
Fadlia Fadlia ◽  
Syariful Anam
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Peroxide Value ◽  
Activated Charcoal ◽  
National Standard ◽  
Quality Requirements ◽  
Cooking Oil ◽  
Used Cooking Oil

Quality of used cooking oil with snake fruit (Salacca zalacca (Gaertn.) Voss) seed adsorbent  has been conducted. This study aims to determine the ability of snake fruit seed in reducing peroxide value and free fatty acids in used cooking oil which can improve the quality and extend usage lifespan of the used cooking oil. The oil sampled in this study was packaged cooking oil which is usually used to fry food untill 7th frying. The oil was then neutralized using snake fruit activated charcoal. The test refers to the Indonesian National Standard (SNI) 7709: 2012 as the quality requirements of cooking oil. The results showed that snake fruit activated charcoal can reduce peroxide value as much as 56.18% and free fatty acid 76.04% in the used cooking oil.

scholarly journals Pemanfaatan Daun Cengkeh (Syzygium aromaticum L.) Dalam Proses Pembuatan Virgin Coconut Oil (VCO)

2020 ◽  
Vol 9 (2) ◽  
pp. 184
Author(s):  
Rosita Mangesa ◽  
Irsan Irsan
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Water Content ◽  
Coconut Oil ◽  
Acid Number ◽  
National Standard ◽  
Syzygium Aromaticum ◽  
Virgin Coconut Oil ◽  
Standard Limit

The clove leaves are part of the clove plant which rarely used, and if you look at them, the clove leaves have active compounds that can be functioned as antibacterials. Meanwhile, Virgin Coconut Oil or called VCO, is processed from coconut milk as the essential ingredient, and if it is not processed correctly, VCO will usually have a short shelf life or can be damaged quickly. This study aims to determine the quality of VCO by adding clove leaves in its processing. Based on the results of the study, it can be seen that the quality of VCO with the addition of clove leaves for the indicator of water content and the free fatty acid number is not following the Indonesian National Standard (SNI). In contrast, the indicator for the VCO peroxide number with a mixture of clove leaves has good quality according to the SNI standard. Based on the results of the study, it can be seen that the quality of VCO with the addition of 100 grams of clove leaves for indicators of water content and fatty acid numbers, namely 2.9% and 0.69%, is high or above the SNI standard limit. In comparison, the quality of VCO with the addition of 100 grams of clove leaves with indicators a peroxide value of 0.7 mg ek/ kg or less than 2 mg ek/kg has good quality based on Indonesian National Standard. Keywords: Quality, VCO

Efek Konsentrasi Alkali Pada Virgin Coconut Oil Dalam Proses Pembuatan Sabun Mandi

2018 ◽  
Vol 3 (1) ◽  
pp. 53
Author(s):  
Suryani Suryani ◽  
Ellyta Sari ◽  
Amelia Amelia
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Coconut Oil ◽  
Free Alkali ◽  
Alkaline Solutions ◽  
Virgin Coconut Oil ◽  
Independent Variable ◽  
Agitation Time

<p>Telah dilakukan penelitian efek konsentrasi KOH terhadap sabun mandi  menggunakan bahan dasar Virgin Coconut Oil. Sabun mandi ini  merupakan pengembangan produk dari Virgin Coconut Oil (VCO). Sabun dibuat dari reaksi minyak dan larutan alkali dalam skala laboratorium melalui proses dingin menggunakan KOH sebagai larutan alkalinya. Konsentrasi KOH yang digunakan adalah 30% b/v, 40% b/v, 50% b/v, 60% b/v dan 70% b/v sebagai variabel bebas dan sebagai variabel tetapnya adalah waktu pengadukan pada es  selama 30 menit dengan temperatur yang digunakan 28<sup>0</sup>C. Mutu sabun dianalisa dengan menentukan asam lemak bebas, alkali bebas, lemak tak tersabunkan, kadar air,  dan minyak pelikan. Dari penelitian ini ternyata semakin besar konsentrasi KOH yang digunakan menghasilkan sabun yang semakin keras tekstur nya. Mutu sabun yang dihasilkan yang sesuai dengan SNI untuk alkali bebas adalah pada penambahan KOH 405 b/, alkali bebasnya 0,13 % sesuai dengan SNI maksimum 0,14%, asam lemak bebas pada penambahan KOH 50% 6,5 menurut SNI 2,5- 7,5,lemak tak tersabunkan pada penambahan KOH 40% yaitu2,42 menurut SNI maksimum 2,5, minyak pelikan pada penambahan KOH 50%  negatif sesuai dengan SNI tidak boleh ada minyak pelikan. Dapat disimpulkan bahwa penambahan konsentrasi KOH yang menghasilkan sabun mandi bagus dan sesuai dengan SNI adalah antara 40% dan 50%.</p><p><em><em>The effect of KOH concentration on soap has been done using the basic ingredients of Virgin Coconut Oil. This soap is a product development of Virgin Coconut Oil (VCO). Soaps are made from oil reactions and alkaline solutions on a laboratory scale through a cold process using KOH as the alkaline solution. The KOH concentration used was 30% w / v, 40% w / v, 50% w / v, 60% w / v and 70% w / v as the independent variable and as the fixed variable was ice agitation time for 30 min with temperature used 28 <sup>0</sup>C. The quality of soap is analyzed by determining free fatty acids, free alkali, unabsorbed fat, moisture content, and pelicans oil. From this study it turns out that the greater the concentration of KOH used to produce soap that the harder the texture. The quality of the resulting soap in accordance with the SNI for the free alkali is in the addition of KOH 40% b /v 0.13% free alkali in accordance with the maximum SNI of 0.14%, free fatty acid at the addition of 50% KOH 6.5 according to SNI 2.5 - 7.5, unabsorbed fat at 40% KOH addition 2.42 according to the maximum SNI of 2.5, the pelicans oil at the addition of 50% negative KOH in accordance with the SNI shall not have pelicans oil. It can be concluded that the addition of KOH concentration resulting in good soap and in accordance with SNI is between 40% and 50%</em></em></p><p><em> </em></p>

scholarly journals KUALITAS VIRGIN COCONUT OIL (VCO) DENGAN PENAMBAHAN VARIASI KONSENTRASI UMBI RUMPUT TEKI (Cyperus rotundus L.) DITINJAU DARI BILANGAN PEROKSIDA

2019 ◽  
pp. 64-70
Author(s):  
Indah Tri Susilowati ◽  
Rahma Ningtyas
Keyword(s):  
Fatty Acid ◽  
Peroxide Value ◽  
Coconut Oil ◽  
Sampling Technique ◽  
Cyperus Rotundus ◽  
Virgin Coconut Oil ◽  
Descriptive Data ◽  
Chemical Laboratory ◽  
Quota Sampling

Kerusakan minyak ditandai dengan bau dan rasa tengik yang disebut proses ketengikan. Proses ketengikan disebabkan asam lemak dirombak menjadi hidrokarbon, aldehid dan keton. Bau kurang sedap muncul akibat campuran dari berbagai produk ini. Penelitian ini bertujuan untuk mengetahui kualitas VCO dengan penambahan variasi konsentrasi umbi rumput teki ditinjau dari bilangan peroksida. Penelitian dilakukan di laboratorium STIKes Nasional pada bulan Oktober-Desember 2016. Desain penelitian menggunakan eksperimental dengan analisa data secara deskriptif. Teknik sampling menggunakan quota sampling. Pemeriksaan kadar bilangan peroksida menggunakan metode iodometri. Penambahan variasi konsentrasi umbi rumput teki yang digunakan yaitu 0 %, 4 %, 8 %, 12 %, 16 %, 20 % (b/v). Hasil pemeriksaan bilangan peroksida berturut-turut yaitu 1,1125 meq/kg; 0,9261 meq/kg; 0,5817 meq/kg; 0,5472 meq/kg; 0,4817 meq/kg; 0,4464 meq/kg. VCO dengan penambahan umbi rumput teki memiliki kualitas yang lebih baik dibandingkan dengan VCO tanpa penambahan umbi rumput teki ditinjau dari bilangan peroksida. Kata kunci : VCO, umbi rumput teki, peroksida. The oil damage is characterized by off-ß avor and off-odor which is called as rancidity. Rancidity occurs due to fatty acid broken up into hydrocarbon, aldehyde and ketone. The emergence of odors due to mixed of these products. The aim of this study is to determine quality of VCO with addition of various concentration of purple nut sedge tuber in terms of peroxide value. This research was done in Chemical Laboratory STIKES Nasional on October until December 2016. This research used experimental design with descriptive data analysis. Sampling technique used quota sampling. Peroxide value were tested using iodometric methods. The various concentration of purple nut sedge tuberused were 0 %, 4 %, 8 %, 12 %, 16 %, 20 % (w/v) and the peroxide value obtained were 1.1125 meq/kg; 0.9261 meq/kg; 0.5817 meq/kg; 0.5472 meq/kg; 0.4817 meq/kg; 0.4464 meq/kg, respectively. VCO with the addition of purple nut sedge tuberhas a better quality than the VCO without the addition of purple nut sedge tuberin terms of peroxide. Keyword: VCO, purple nut sedge tuber, peroxide.

scholarly journals Stabilitas Oksidasi Lipida Terstruktur Berbasis Minyak Kelapa dan Minyak Kelapa Sawit [Oxidative Stability of Structured Lipid Based on Coconut Oil and Palm Oil]

Buletin Palma ◽  
2018 ◽  
Vol 18 (2) ◽  
pp. 53
Author(s):  
Siti Nurhasanah ◽  
Nur Wulandari ◽  
S. Joni Munarso ◽  
Purwiyatno Hariyadi
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Oxidative Stability ◽  
Palm Oil ◽  
Peroxide Value ◽  
Coconut Oil ◽  
Structured Lipid ◽  
Total Oxidation ◽  
Anisidine Value ◽  
Novozyme 435

<p>Lipase-catalyzed interesterification is used to synthesize a value added structured lipid (SL) from coconut oil and palm oil. SL is a modified lipid (triacylglycerols; TAG) with replacement and/or arrangement of fatty acid positions to change the fatty acid composition and/or their positional distribution in glycerol backbone. In this research, modification was conducted by enzymatic process, to produced SLs with some beneficial changes in chemical and physical properties.  Sepecifically, objective of this research was to study the oxidative stability of SL obtained from enzymatic interesterification of coconut oil and palm oil. Stability was studied using schaal oven test method and parameters tested were free fatty acid, peroxide value, anisidine value, total oxidation, and thio barbituric acid (TBA) value. Results showed that the type of lipase used and length of interesterification resulted in SL with different oxidative stability. Among SLs evaluated, SL produced with esterification process using lipase of Novozyme 435 for 5 hours has high oxidative stability. At the end of the observation, product that was stored for 4 weeks at 50 <sup>o</sup>C, contained free fatty acid value of 4.21 %, peroxide value of 2.88 meq O<sub>2</sub>⁄kg, anisidine value of 5.16, TBA value of 2.01 mg malonaldehyde/kg sample, and total oxidation of 10.92. Those result shows that oxidation stability parameter of structured lipid still meet the standard of palm oil  product and its derivatives</p><p> </p><p><strong>Abstrak</strong></p><p>Interesterifikasi enzimatik dengan lipase digunakan untuk mensintesis lipida terstruktur (<em>structured lipid</em>/SL) dari bahan baku minyak kelapa dan kelapa sawit. SL adalah lipida (trigliserida) termodifikasi melalui penggantian dan/atau pengaturan posisi asam-asam lemak pada kerangka gliserolnya.  Pada penelitian ini modifikasi secara enzimatik untuk dilakukan untuk menghasilkan produk SL dengan sifat kimia dan fisika tertentu yang memiliki nilai tambah. Penelitian ini bertujuan untuk mempelajari stabilitas oksidasi produk SL hasil interesterifikasi enzimatik minyak kelapa dan minyak kelapa sawit. Stabilitas oksidasi diukur dengan menggunakan metode uji <em>oven schaal</em> dengan  parameter uji adalah asam lemak bebas, bilangan peroksida, bilangan anisidin, total oksidasi, dan nilai asam tio barbiturat (TBA). Hasil penelitian menunjukkan bahwa jenis lipase yang digunakan dan lama interesterifikasi menghasilkan SL dengan stabilitas yang berbeda. Diantara produk SL yang dievaluasi, SL yang diperoleh dari proses interesterifikasi menggunakan lipase Novozyme 435 selama 5 jam mempunyai stabilitas oksidasi tinggi.  Pada akhir pengamatan, produk yang disimpan selama 4 minggu pada suhu 50 <sup>o</sup>C memiliki nilai asam lemak bebas 4,21%, bilangan peroksida 2,88 meq O<sub>2</sub>/kg, bilangan anisidin 5,16, bilangan TBA 2,01 mg malonaldehid/kg sampel, dan nilai total oksidasi 10,92. Hasil tersebut menunjukkan bahwa stabilitas oksidasi lipid terstruktur yang dihasilkan mampu memenuhi standar sebagai produk minyak sawit dan turunannya.</p><p> </p>

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