scholarly journals SIFAT FISIK-KIMIA DAN ORGANOLEPTIK BAWANG GORENG PALU PADA BERBAGAI FREKUENSI PEMAKAIAN MINYAK GORENG

2015 ◽  
Vol 34 (04) ◽  
pp. 390
Author(s):  
Nur Alam ◽  
Rostiati Rostiati ◽  
Muhardi Muhardi
Keyword(s):  
Fatty Acids ◽  
Moisture Content ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Life Time ◽  
Organoleptic Properties ◽  
Cooking Oil ◽  
Physical Chemical ◽  
Oil Utilization

The objectives of the study were to determine the physical-chemical and organoleptic properties of Palu fried onions at the varying utilization frequency of cooking oil, i.e. F0 : fresh oil , F1 : 1 time of using , F2 : 2 times of using , F3 : 3 times of using , F4 : 4 times of using , F5 : 5 times of using and F6 : 6 times of using , the each level was replicatedthree times. The frequency of cooking oil utilization was significantly affected to decreasing color, texture, moisture content, oil content and panelist preference level on the crispness of Palu fried onions as well as increasing oxidation rate of unsaturated fatty acids at the cooking oil. Physical - chemical and organoleptic quality of Palu fried onions wereobtained of the best fresh frying utilization cooking oil, 1, 2, and 3 times of using cooking oil , respectively. The use of cooking oil more than 3 times oxidized free fatty acids, so it is less feasible to use based on the life time and health aspects of fried onions.Keywords: Fried onion, physical-chemical and organoleptic properties, frequency of utilization cooking oil. ABSTRAKTelah dilakukan penelitian untuk mengetahui sifat fisik-kimia dan organanoleptik bawang goreng Palu yang digoreng pada berbagai taraf frekuensi pemakaian minyak goreng yaitu F0: minyak segar, F1 : 1 kali pemakaian, F : 2 kali pemakaian, F 3 : 3 kali pemakaian, F4 : 4 kali pemakaian, F 5 : 5 kali pemakaian dan F : 6 kali pemakaian, setiap tarafdiulang tiga kali. Frekuensi pemakaian minyak goreng pengaruhnya sangat nyata menurunkan warna, tekstur, kadar air, minyak dan tingkat kesukaan panelis terhadap kerenyahan bawang goreng Palu serta meningkatkan laju oksidasi asam lemak tidak jenuh  pada minyak goreng. Mutu fisik-kimia dan organoleptik bawang goreng Palu secara berturut-turut terbaik diperoleh dari penggorengan menggunakan minyak goreng segar, 1, 2 dan 3 kali pemakaian. Pemakaian minyak goreng > 3 kali, asam lemak bebas telah teroksidasi sehingga kurang layak untuk digunakan jika ditinjau dari aspek daya tahan simpan bawang goreng dan kesehatan.Kata kunci: Bawang goreng, sifat fisik-kimia dan organoleptik, frekuensi pemakaian minyak goreng

scholarly journals Effect of nitrogen and potassium fertilization on the production and quality of oil in Jatropha curcas L. under the dry and warm climate conditions of Colombia

2014 ◽  
Vol 32 (2) ◽  
pp. 255-265 ◽  
Author(s):  
Omar Montenegro R. ◽  
Stanislav Magnitskiy ◽  
Martha C. Henao T.
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Jatropha Curcas ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fruit Production ◽  
Biodiesel Production ◽  
Oil Composition

This study was conducted to assess fruit and seed yield, oil content and oil composition of Jatropha curcas fertilized with different doses of nitrogen and potassium in Espinal (Tolima, Colombia). The yields ranged from 4,570 to 8,800 kg ha-1 of fruits and from 2,430 to 4,746 kg ha-1 of seeds. These yields showed that the fertilizer dose of 150 kg ha-1 N + 120 kg ha-1K increased fruit production by 92% and seed production by 95%, which represents an increase of about 100% in oil production, which increased from 947 to 1,900 kg ha-1. The total oil content in the seeds ranged from 38.7 to 40.1% (w/w) with a high content of the unsaturated fatty acids oleic (> 47%) and linoleic acid (> 29%). The highest content of oleic acid in the seed oil was from the unfertilized control plants and plants with an application of 100 kg ha-1 of N and 60 kg ha-1 of K, with an average of 48%. The lowest content of oleic acid was registered when a low dose of nitrogen and a high level of potassium were applied at a ratio of 1:2.4 and doses of 50 kg ha-1 N + 120 kg ha-1 K, respectively. Low contents of the saturated fatty acids palmitic (13.4%) and stearic (7.26%) were obtained, making this oil suitable for biodiesel production. The nitrogen was a more important nutrient for the production and quality of oil in J. curcas than potassium under the studied conditions of soil and climate.

scholarly journals Pemanfaatan Kunyit (Curcuma domestica Val) Untuk Memurnikan Minyak Jelantah

2018 ◽  
Vol 7 (1) ◽  
pp. 41
Author(s):  
Muhammad Silmi Hi Abubakar ◽  
Siti Nuryanti ◽  
Suherman Suherman
Keyword(s):  
Fatty Acids ◽  
Moisture Content ◽  
Free Fatty Acids ◽  
Quality Parameters ◽  
Test Results ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Before And After

Study on the purification and quality test of used cooking oil with turmeric has been done. This study aims to determine the quality of cooking oil after purified turmeric. The quality parameters of oil studied were the moisture content, free fatty acids (FFA), and peroxide. The methods used for determination of these parameters were gravimetry for moisture content, acid-base titration for free fatty acids, and iodometric for peroxide. The test results for water from 0.6% to 0.4% free fatty acid from 1.2% to 0.2%, and peroxide levels before and after purification were successively from and 6 meq/g to 4 meq/g, respectively. Only free fatty acids of all three parameters met the requirement of SNI.

STUDY OF TEMPERATURE AND ROASTING TIME ON THE QUALITY OF COCOA POWDER

2012 ◽  
Vol 2 (1) ◽  
pp. 41-52
Author(s):  
Kurnia Herlina Dewi ◽  
Meizul Zuki ◽  
Mulad Subagio
Keyword(s):  
Moisture Content ◽  
Microbial Contamination ◽  
Fat Content ◽  
Effect Of Temperature ◽  
Organoleptic Properties ◽  
Cocoa Powder ◽  
Physical Chemical ◽  
Roasting Temperature ◽  
Roasting Time

This study aims to determine the effect of temperature and roasting time the quality of cocoa powder by SNI, to determine the effect of roasting time (100oC and 115oC) for the quality of cocoa powder (physical, chemical, biological, and organoleptic) and to determine the effect of roasting time : 30, 60, 90 and 120 minutes of quality cocoa powder. Variables in this study to determine the quality of cocoa powder consists only of fat content, moisture content, pH, microbial contamination is the number of colonies of bacteria, fungi, Escherichia coli, refinement, and organoleptic properties of the cocoa powder. Results obtained show the temperature effect and long penyangraian penyangraian nibs cocoa powder quality results as a whole meet the quality standards. Effect of roasting temperature to produce quality cocoa powder on the observation variables (pH, moisture content, fat content) and different organoleptic properties, whereas the level of tenderness, microbial contamination, cocoa powder is no different. The effect of roasting time to produce quality cocoa powder on the observation variables (pH, moisture content, fat content) and different organoleptic properties. The level of tenderness and microbial contamination non-significant.

scholarly journals Chemical Characteristics of Beef Rawon in Malang City

2021 ◽  
Vol 16 (1) ◽  
pp. 42-53
Author(s):  
Chandra Aditya Darmawan ◽  
Djalal Rosyidi ◽  
Herly Evanuarini
Keyword(s):  
Fatty Acids ◽  
Moisture Content ◽  
Quantitative Research ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fat Content ◽  
Cooking Methods ◽  
Heating Process ◽  
Cooking Process

Malang city as a travel destination in East Java has various regional culinary such as rawon. Rawon was a dark soup made from beef broth, kluwak (Pangium edule) paste, sliced beef and various spices, served with rice and often topped with bean sprout. Spices are obtained from natural plants that have a strong aroma and are often used as food mixtures or preservatives. Different ingredients, cooking methods and the heating process will produce different quality of rawon. The quality of rawon in Malang city was still unknown. By knowing the quality of rawon in Malang, parts used in the manufacture of rawon include ribs, brisket, samcan meat and each rawon merchant shop uses a different type. Consumers can choose rawon with the best quality in terms of nutritional value. The purpose of this research was to know the pH, moisture content, fat content, total calories and fatty acid profile of rawon in Malang City. This research used a descriptive quantitative research method. Rawon samples were obtained from several districts in Malang city. The data were analyzed statistically using excel to get the standard deviation based on the method. The results showed that the quality of rawon in Malang city has a pH of 4.80 ± 0.22 to 6.31 ± 0.16, moisture content 44.07 ± 0.15 to 74.81 ± 0.16, fat content 9.86 ± 0.18 to 17.62 ± 0.19, total calories 88.38 ± 0.24 to 201.06 ± 0.14, rawon consists of 19 saturated fatty acids and 18 unsaturated fatty acids saturated. It can be concluded that rawon beef in Malang was a nutrient dense food and its nutritional content varies depending on the beef used, the recipe and the cooking process.

Lipid Profile of Pig Tissues Contrasting in Meat Production

2019 ◽  
Vol 09 ◽  
Author(s):  
Vitaly A. Bekenev ◽  
Anatoly A. Arishin ◽  
Sergei N. Mager ◽  
Izolda V. Bolshakova ◽  
Natalia L. Tretyakova ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Fatty Acids ◽  
Linoleic Acid ◽  
Live Weight ◽  
Blood Lipid ◽  
Meat Production ◽  
Thoracic Vertebrae ◽  
Organoleptic Properties ◽  
Biochemical Characteristics

Background: Studies were carried out on two breeds of pigs - Pietrain (P), and Kemerovo (K), contrasting in composition of carcasses, and their hybrids. Objective: The purpose of this work was to establish the characteristics of the composition of lipids of intramuscular fat (IMF), back fat and serum, organoleptic qualities in animals of these breeds. Methods: Animals of 10 individuals in each group were fed on a standard feed and slaughtered with a live weight of 95-100 kg. The quality of carcasses, the biochemical characteristics of blood, the composition of fatty acids and cholesterol in meat and fat, and blood lipid peroxidation were determined. Results: Thickness on the back fat (BF) at the level of 6-7 thoracic vertebrae with a live weight of 100 kg was 35.8 ± 1.65 mm in pigs of breed K, in hybrids - 27.6 ± 1.06, and in breed P - 19, 6 ± 1.43 mm. IMF in pigs of breed K was almost 4.5 times greater than that of breed P. IMF K breed contained 2 times less cholesterol than in P (2.34 vs. 4.68%). In the IMF, K was 2 times less polyunsaturated fatty acids (PUFA), than P, 7.82 and 15.22%, linoleic acid, 6.74% and 12.42% respectively (p <0.005).The organoleptic properties of meat and salted back fat were significantly higher in breed K (P = 0.05). Conclusion: The data obtained allow us to establish priorities in the use of products of specific breeds of pigs, depending on medical requirements.

scholarly journals Research Regarding Dynamics of Chemical Content from Pasteurized Egg Melange Stored in Polyethylene Type Packings

2017 ◽  
Vol 54 (2) ◽  
pp. 368-374
Author(s):  
Roxana Nicoleta Ratu ◽  
Marius Giorgi Usturoi ◽  
Daniel Simeanu ◽  
Cristina Simeanu ◽  
Alexandru Usturoi ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Storage Period ◽  
Essential Amino Acids ◽  
Storage Conditions ◽  
Mean Values ◽  
Chemical Content

n the current paper, we aimed to analyze the way in which packing (different polyethylene types) influence the quality of pasteurized melange during storage, packing being realized in units of 1 kg (Tetra Pak) (batch Lexp-1) and units of 5 kg (Bag in box) (batch Lexp-2). Products were stored during a period of 28 days at a temperature of +4�C, qualitative determinations being realized in first day (day 0), at 7 days, at 14 days, 21 days and in day 28 of storage. Were effectuated a sensorial examination and chemical analysis were was established the content in dry matter (%), water (%), proteins (%), content in essential amino acids (isoleucine, methionine, tryptophan, phenylalanine) and non-essential amino acids (alanine, histidine, glycine, serine) (mg/100g) as well as the content in lipids (%) establishing their profile by identification of some saturated fatty acids (16:0 mg/100g and 18:0 mg/100g) and unsaturated fatty acids (16:1 mg/100g and 18:1 mg/100g). After sensorial examinations, the first modifications were observed at the checking effectuated in day 21 for batch Lexp-2, the obtained score being of 18 points, and at checking effectuated in day 28 was given a score of 18 points for melange belonging to batch Lexp-1 and only 14 points for melange from batch Lexp-2. Differences were recorded also in case of chemical composition of products, so for protein content at batch Lexp-1 in first checking day was obtained a mean of 12.730�0.24% and at batch Lexp-2 12.614�0.22%. Differences between those two batches were insignificant (p[0.05). In case of fat content, at the end of storage period was obtained a mean of 11.256�0.06% for batch Lexp-1 and 11.244�0.11% for batch Lexp-2, differences being insignificant (p [ 0.05). Regarding the profile of amino acids and fatty acids, the mean values obtained during whole storage period oscillated from one stage to another, but the differences between those two batches were insignificant (p [ 0.05). Pasteurized egg melange suffers certain sensorial modifications during storage, especially on consistency and colouring, modifications which are accentuated mainly by storage conditions. Type of polyethylene utilized for this product hadn�t influenced the nutritive qualities of product.

scholarly journals Characteristics of Oil Used in Frying Peanuts, Cassava And Mackarel Tuna

2021 ◽  
Vol 2 (01) ◽  
pp. 50-62
Author(s):  
Aprialis Aprialis ◽  
Anwar Kasim ◽  
Rini Rini
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Moisture Content ◽  
Physical Properties ◽  
Fatty Acid Profile ◽  
Frying Oil ◽  
Chemical Components ◽  
Used Frying Oil ◽  
Cooking Oil ◽  
Used Cooking Oil

The characteristics of used frying oil that are carried out repeatedly using high temperatures and with various types of frying materials will produce new types of oil characteristics, either the appearance and disappearance of certain types of chemical components or changes in the physical properties of frying oil. This study aims to determine the characteristics of cooking oil used in frying peanuts which have high fat content, high carbohydrate content of cassava and mackarel tuna which have high protein content. Samples of used oil were obtained from the use of pure oil from palm oil and then the 3 different types of material were fried with 10 frying repetitions. The used frying oil was then visually observed and analyzed for the number of peroxides, free fatty acids, and moisture content, color test, amount of oil lost and its fatty acid profile. In addition, the amount of oil lost due to frying was observed. The results of the observation of physical properties showed that the smell of oil became rancid, the taste of the oil became bitter and the color turned black. The results of chemical analysis showed that the highest peroxide number was 50 meq / kg, the highest ALB was 4.35%, and the highest moisture content was 3.21% , the oil color changed to brown to black, the highest amount of oil lost due to frying was cassava frying oil. namely 58.4% , . The fatty acid profile of used frying oil has been obtained and there is a decrease in the percentage, the appearance of stearic acid and the loss of heptadecanoic fatty acids in the used cooking oil for peanuts, cassava and mackarel tuna.

scholarly journals Analisis Penggunaan dan Syarat Mutu Minyak Goreng pada Penjaja Makanan di Food Court UAI

2012 ◽  
Vol 1 (3) ◽  
pp. 147
Author(s):  
Nita Noriko ◽  
Dewi Elfidasari ◽  
Analekta Tiara Perdana ◽  
Ninditasya Wulandari ◽  
Widhi Wijayanti
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Water Content ◽  
Free Fatty Acid Content ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Trade Mark ◽  
Cooking Oil ◽  
Oil Utilization

<p style="text-align: justify;">Masyarakat Indonesia memiliki ketergantungan terhadap minyak goreng. Berdasarkan hal tersebut, perlu dilakukan penelitian tentang penggunaan dan mutu minyak goreng yang beredar di masyarakat khususnya pada <em>food court</em> Universitas Al Azhar Indonesia. Analisis penggunaan minyak goreng penjaja makanan dilakukan dengan melakukan survey. Untuk mengetahui kualitas minyak goreng, dilakukan analisis laboratorium yang meliputi pengukuran kadar air, kadar asam lemak bebas, dan bilangan Iod. Dari dua belas kantin, ada sembilan kantin yang menggunakan minyak goreng. Hasil analisis penggunaan minyak goreng, penjaja makanan secara konsisten  34% menggunakan minyak goreng bermerek dagang A. Pemilihan minyak berdasarkan warna dilakukan oleh 45% penjaja makanan. Berdasarkan frekuensi pembelian, 56% penjaja makanan membeli minyak per hari. Selain itu, 45% penjaja makanan menggunakan minyak dua kali pakai. Analisis kebutuhan minyak menunjukkan, 34% penjaja makanan menghabiskan 5 liter minyak per hari. Cara pembuangan minyak yang dilakukan oleh penjaja, 78% membuang minyaknya setelah digunakan, dimana 67% penjaja makanan membuangnya ke tempat sampah. Berdasarkan pengukuran kadar air, kadar asam lemak bebas, dan bilangan Iod menunjukkan bahwa minyak goreng yang digunakan belum memenuhi standar syarat mutu, walaupun kadar air yang masih di dalam ambang batas normal yaitu kurang dari 0,30%, namun kadar asam lemak bebas baik sebelum maupun sesudah penggunaan melebihi ambang batas normal yang didukung oleh hasil pengukuran bilangan Iod.</p><h6 style="text-align: center;"><strong>Abstract</strong></h6><p style="text-align: justify;">Indonesian society has dependence of cooking oil. Based on this condition, the analysis of cooking oil utilization and quality requirement at UAI food court is necessary and it was done. The analysis of cooking oil utilization was done by doing some survey. In order to search the quality of cooking oil, laboratory analysis was done that consist of water content, free fatty acid content, and Iod number. There are nine canteens from twelve canteens which utilize cooking oil. The result of cooking oil utilization analysis shows that 34% of merchant is utilizing A trade mark cooking oil, 45% is identifying cooking oil based on color. 56% is buying cooking oil per day, 45% is utilizing the cooking oil twice, 34% is spending 5 liters cooking oil per day, 78% is casting the cooking oil after utilize it, and 67% is casting the cooking oil into trash can. Based on the result of water content, free fatty acid content, and Iod number analysis showed that cooking oil is never fulfill normal limit, although the water content is still in proper limit is less than 0,30%, whereas free fatty acid content before or after analysis are very high and do not in proper limit and it is supported by Iod number measurement result.</p>

scholarly journals Potential Development of Chicken Egg Shell in Recycling of Waste Cooking Oil Innovation through the Stirer Chamber Device

2021 ◽  
Vol 9 (E) ◽  
pp. 1256-1260
Author(s):  
Narwati Narwati ◽  
Hadi Suryono ◽  
Setiawan Setiawan
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Sampling Technique ◽  
Quality Standard ◽  
Waste Cooking Oil ◽  
Control Group ◽  
Control Group Design ◽  
Cooking Oil ◽  
Before And After ◽  
Shell Powder

BACKGROUND: Waste cooking oil (WCO) is overused for frying food can be a series of chemical changes, such as rancid, oxidation, and decomposition. Most of the secretion of toxic compounds are a product of oxidizing fatty acids, especially double-unsaturated fatty acids. The intervention of stirrer chamber unit and utilization of chicken egg’s shell as an absorbent is known to be able to improve the quality of WCO, includes reducing the number of peroxide and the free fatty acids (FFA). AIM: The purpose of this study was to analyze the effect of the powdered chicken egg’s shell on the number of peroxide and the WCO’s FFA through the stirrer chamber. METHODS: The research design used a simple experiment type post-test only Control Group Design. The subject was divided randomly into two groups, the treatment was given to one group as a control group and another group (other treatment) as an experimental group. The WCO sample called “Jelantah” for each treatment was 100 ml as much as 48 samples. The replication was carried out twice with 24 treatments of the mass of egg’s shell powder that was 0 g, 5 g, 10 g, and 15 g at a stirring time for 15 min, 30 min, and 45 min before and after heating 35°C using 150 rpm of stirring speed. The sampling technique used purposive sampling and the data were analyzed by Anova statistical test. RESULTS: Based on the result from this research showed that the original WCO contained the number of peroxide and FFA exceeded the quality standard of SNI 3741 (2013) that is 16.7 MekO2/kg and 0.69% in sequence. The average number of peroxide of control group before heating was 15.31 MekO2/kg and after heating was 17.4 MekO2/kg, while the FFA before heating was 0.61%, and after heating was 0.71%. The number of peroxide of the treatment group before heating was 12.83 MekO2/kg and after heating was 6.98 MekO2/kg, while the FFA content before heating was 0.46% and after heating was 0.25%. CONCLUSION: It was concluded that chicken egg’s shell powder could minimize the content of peroxide and WCO’s FFA through the stirrer chamber.

Supranutritional vitamin E supplementation of grass-finished and concentrate-finished Hereford-cross steers and its effect on meat quality

1997 ◽  
Vol 1997 ◽  
pp. 47-47
Author(s):  
L. Vega ◽  
M. Enser ◽  
G.R. Nute ◽  
R.I. Richardson ◽  
R.C. Ball ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Vitamin E ◽  
Meat Quality ◽  
Unsaturated Fatty Acids ◽  
Dietary Supplementation ◽  
Antioxidant Vitamin ◽  
Beef Quality ◽  
Quality And Shelf Life ◽  
Vitamin E Supplementation

Previous research has demonstrated that dietary supplementation with high levels of die antioxidant vitamin E is effective in improving beef quality and shelf-life (Arnold et al., 1993). However, these animals did not have access to fresh forage which contains high levels of endogenous vitamin E and also higher concentrations of readily-oxidisable n-3 unsaturated fatty acids (Marmer et al, 1984). This study investigated the effectiveness of vitamin E in improving meat quality of grass finished cattle compared with those fed concentrates.

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