JURNAL KONVERSI
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PERUBAHAN KADAR AIR DAN MIKROBIOLOGI BUBUR INSTAN SELAMA PENYIMPANAN DENGAN VARIASI KONDISI PRE-PACKING
Get PDFPertumbuhan rata - rata konsumsi bubur dalam kemasan cukup tinggi, sekitar 31,47% pada tahun 2011 - 2015. Pada makanan kering seperti bubur instan, kerusakan biasanya disebabkan oleh kadar air yang tinggi. Tujuan dari penelitian ini adalah menganalisis perubahan kadar air, mikrobiologi, serta karakteristik organoleptik pada bubur instan dengan variasi kondisi pre-packing selama penyimpanan. Parameter yang diamati pada penelitian ini, yaitu: kadar air, nilai ALT, jumlah kapang dan khamir, serta sifat organoleptik. Penelitian ini dilakukan dengan membandingkan empat kondisi pre-packing di antaranya: gudang tanpa AC (air conditioner), gudang dengan AC, ruangan dengan exhaust fan, dan ruangan dengan kipas angin. Secara deskriptif, ruangan dengan kipas angin merupakan kondisi pre-packing terbaik dengan kadar air tertinggi di minggu ke-3, yaitu 4,41%, nilai ALT menurun hingga minggu ke-5, serta tidak adanya pertumbuhan kapang dan khamir dari minggu ke-1 sampai ke-5. Nilai keseluruhan dari perlakuan ini adalah 16.
KAJIAN SINGKAT POTENSI RANCANG BANGUN PABRIK OMEGA-3 (DHA) KEMURNIAN TINGGI BERBAHAN BAKU SPESIES AURANTIOCHYTRIUM DARI HUTAN BAKAU INDONESIA UNTUK MENUNJANG KETAHANAN PANGAN NASIONAL
Get PDFAsam dokosaheksaenoat atau biasa disingkat DHA adalah asam lemak tak jenuh ganda (polyunsaturated fatty acid, PUFA) omega-3 yang sangat diperlukan tubuh manusia. Kajian ini memaparkan usaha-usaha yang dapat dilakukan untuk mengeksplorasi mikroalga yang kaya DHA dari hutan bakau Indonesia. Tahapan tersebut dimulai isolasi mikroalga dari hutan bakau Indonesia dan penyimpanan kultur isolat murni dari mikroalga penghasil DHA. Selanjutnya, diskusi tentang produktivitas DHA mikroalga akan dipresentasikan dan dilanjutkan dengan kajian prospek teknologi dan aspek teknologi untuk ditingkatkan menjadi proyek pembangunan pabrik omega-3 skala komersial. Hasil kajian ini menunjukkan bahwa sumber daya mikroba penghasil DHA dari spesies Aurantiochytrium berlimpah di hutan bakau Indonesia. Produktivitas DHA spesies Aurantiochytrium Indonesia tergolong tinggi dan memungkinkan untuk ditingkatkan lagi pada operasi fed-batch skala yang lebih besar. Pemaparan yang diajukan pada tulisan ini diharapkan dapat berkontribusi dalam memacu pengembangan teknologi lebih lanjut di bidang ini. Harapannya adalah dibangunnya sentra produksi omega-3 di Indonesia yang meningkatkan nilai tambah ekonomi untuk negara serta berkontribusi dalam pemenuhan nilai gizi rakyat pada program ketahanan pangan yang gencar dicanangkan oleh pemerintah Indonesia
PENGARUH JENIS KEMASAN DAN WAKTU PENYIMPANAN PADA PAKAN BROILER STARTER TERHADAP KADAR AIR DAN PROTEIN KASAR
Get PDFFeed storage and packaging will be effected the quality of phisical, chemist and microbiology. Packaging are one of methode for protecting quality from damage of environment. This research to determine the effect of packaging type and storage time for broiler starter feed. This research using methode statistical Complete Randomized Desing Factorial (5x7) with three replications. The fixed variable in his research are Broiler Starter Feed. The first independent variable is the type of packaging (glass bottle, plastic bottle, aluminum foil vacuum plastic, vacuum plastic, and plastic seal) and the second independent variable is storage (14, 169, 338, 506, 674, 842, 1010 hours). The dependent variables were research are water content test with using methode SNI.01-2891-1992 and Crude Protein testing with kjeldahl methode using AOAC 2005, Chapter 4 Item 4.2.11. method 2001.11. Analysis data by using comparison of graphic regression. The maximum results showed that aluminum foil vacuum plastic container with water content of 10,8137% and crude protein 22,4661% at 842 hours storage (± 5 weeks), water content regression are y = 0.0003x + 10,636 with R2 = 0,9085 and crude protein regression y = 0,0007x + 23,07 with R2 = 0,9477. All test results with various packaging methods and storage time conducted in this study are still in accordance with the standard of feed starter broiler SNI 8173.2.2015 with a maximum water content of 14% and crude protein at least 20%
EVALUASI ALAT PENUKAR KALOR (COOLER) DI HIGH VACUUM UNIT (HVU) III (STUDI KASUS DI KILANG XYZ)
Get PDFHVU III is designed to process reduced crude oil from CDU V or reduced crude from export oil existing tanks. HVU III is one unit that aims to lift light fractions that may still be contained in reduced crude. The vacuum condition is designed to attract mild fractions at relatively low temperatures. With the effort to take the product slop wax as HVGO, indeed the operating condition is changing and there is addition of equipment (Pump and HE) and modification of piping. Therefore in this study about design HE (Cooler) with slop wax product as HVGO which will be cooled from temperature 298oC to 70oC with flow rate 40 m3 / hr. And as a cooling medium used Sea Water (sea water) from temperature 30oC to 38oC. Pressure slop wax 20 kg / cm2 and sea water 4 kg / cm2. The calculation results for cooling the wax slop requires a Cooler of 6 (six) units with a seawater requirement of about 709187.39 lb / hr, and heat transferred in a fouled state of 0.0029 hr ft2 F / btu. Pressure drop for slop wax equal to 7.08 psi while sea water equal to 39.33 psi. Under these conditions it is expected that the addition of equipment in this case Cooler can be done as an effort to take the product of slop wax as HVGO
PENGARUH PEMURNIAN DEGUMMING DAN NETRALISASI TERHADAP PROFIL MINYAK BIJI LABU KUNING (Cucurbita moschata D.)
Get PDFABSTRACTThe objective of the study were to obtain of pumpkin (C. moschata D.) seed oil yield using hexane soxhlet extraction method and the effect of purification on the profile of pumpkin seed oil fatty acids. The results of the study showed that the yield of pumpkin seed crude oil was 37,98% (b/b), whereas the optimum rendement after purification was 76,27% (w/w) by using 0,15% H3PO4. The GC-MS analysis of pumpkin seed oil showed the presence of three same main components of pumpkin seed oil before and after purification which are: linoleic acid, palmitic acid, and stearic acid, respectively. The content of pumpkin seed oil before purification are as follows: 57,96% of linoleic acid, 24,63% of palmitic acid, dan 6,82% of stearic acid, respectively. In the contrary, the content of pumpkin seed oil after purification are as follows: 48,21% of linoleic acid, 20,70% of palmitic acid, dan 5,27% stearic acid, respectively. The purification processes do not affect on the main components of pumpkin seed oil, but determine the difference percentages of pumpkin seed oil main components
PENGARUH PENAMBAHAN GLISEROL DAN LILIN LEBAH PADA SUSUT BERAT BUAH SAWO KHAS BANTEN
Get PDFPackaging is a protection of food product to maintain the quality and durability of food. The aim of this study was to produce edible film as sapodilla fruit preservation, to get the optimum composition of glycerol and beeswax mixture and to get the optimum characteristics of edible film based on cassava peel starch. The methodology of this study was use 3 grams of cassava peel starch with glyserol consentration range 0,75 to 1.25% v/v and beeswax consentration range 1 to 3 w/v.The parameters tested were fruit weight loss, thickness, tensile strength, elongation percentage and solubility. The results showed that the lowest weight loss value were obtained on the addition of 0.75% glycerol and 3% beeswax which were 3.3% of weight loss in 7 days
PENGARUH WAKTU EKSTRAKSI DAUN BINAHONG (Anredera cordifolia (Tenore) Steenis) TERHADAP KEMAMPUAN DAYA HAMBAT BAKTERI Escherichia coli UNTUK PEMBUATAN HAND SANITIZER
Get PDFBinahong leaf extract (Anredera cordifolia (Tenore) Steenis) contains active compounds such alkaloids, flavonoids, terpenoids, and saponins as antibiotic materials that can be used in the manufacture of antiseptic gel hand sanitizers. The purpose of this research is to know the effect of extraction time of binahong leaf to the capability of growth of Escherichia coli (E. Coli) bacteria. Variable times of exstractions are 0,5; 1; 1.5; 2; and 2.5 hours. Phytochemical qualitative test was conducted to determine the presence of alkaloids, flavonoids, terpenoids, and saponins in the binahong leaf extract. Furthermore, dilution of the results of rendement of binahong leaf extract respectively by 5% to test its inhibitory power to the growth of E. coli bacteria. The results showed that the yield of rendemen obtained by extraction time variable was 1.64%; 3.72%; 5.56%; 13.74%; and 13.98% are shown through the equation y = 3.47 x - 2.682 with the value R2 = 0.9049. Data from all five samples showed that samples with extraction time of 0.5; 1; and 1.5 hours had no inhibitory effect on E. coli bacteria growth, but samples with 2 and 2.5 hours extraction time had a resistance diameter of 14.5 and 18.5 mm. The sample which has the greatest inhibitory is subsequently used to make the hand sanitizer antiseptic gel. The product test analysis consists of organoleptic test and pH value determination, homogeneity, dispersion and viscosity. The results showed that the pH value obtained was 6.23, the homogeneity of the product can be seen from the absence of material that still agglomerates, the dissolving power of the research product is 5.5 cm, and the viscosity of the research result is 2080 mPs
EVALUASI PENGARUH KADAR Na2O DAN K2O TERHADAP KUALITAS BUBBLE PADA KACA SODA LIME SILICA
Get PDFTight competition in soda lime silica glass industry cause quality improvement become very important, bubble in flat glass is one of quality parameter which have to improve. So it’s need effort to improve bubble quality in glass. One of influence factor for bubble quality is R2O content in glass, where R2O is sum of N2O and K2O. This research perform in flat glass manufacture type soda lime silica glass with capacity 500 t/d. in this research adjust R2O content from 13.5% to 13.8%, by this adjustment bottom dog house suhu became increase from about 1100 oC to 1120 oC, and also glass viscosity which represent by log y-2 changed from 1460 oC down became 1445 oC. From these two parameter, bubble count became increase from 400 pcs/hour to 1700 pcs/hour, these things are caused by decrement of glass viscosity, forward current of molten glass became faster, so bubble can’t be removed by fining or refining and carried to forming process and finally became defect in glass.
PENGARUH PENAMBAHAN Cr(OH)3 DAN Fe(OH)2 DALAM PEWARNA GLASIR TERHADAP MODULUS PATAH DAN DAYA SERAP BAHAN
Get PDFHeavy metal waste is B3 waste that has hazardous and environmentally damaging effect, such as electroplating industry waste which produces Cr(OH)3 and Fe(OH)2 wastes. The purpose of this research is to use the waste as a mixture of glaze and to know how much the effect of Cr(OH)3 and Fe(OH)2 addition in glaze dye to the fracture modulus and the absorption capacity of the material. The materials were mashed and sieved with a size of 200 mesh, then the three materials were mixed with homogeneous which have 15% leucite, 15% lime, 70% borax composition, then suspended with water until homogeneous. Afterward, added Fe(OH)2 (comparison mix of dye as much as 3%-7% weight of glaze). The experiment was repeated by adding Cr(OH)3, then a mixture of Fe(OH)2 and Cr(OH)3. The suspension result is poured onto the test tile and be spread evenly, then inserted into the muffle, heated to 900oC for 2 hours and cooled. After that, analyzed the fracture modulus and absorption capacity of the test tile. The result of this study; first, the addition of 6% Fe(OH)2 optimize the brown color. Second, the addition of 7% Cr(OH)3 optimize the green color. Last, the addition of 3% mixture of Fe(OH)2 and Cr(OH)3 optimize yellowish green color. From the research data it can be concluded that the more metal oxides are added, the greater the fracture modulus, and the smaller the absorption
KARAKTERISTIK SENYAWA ALKANOLAMIDA DARI MINYAK JARAK CASTOR DAN DIETANOLAMINE DENGAN KATALIS KOH
Get PDFAlkanolamide is an amide compound widely used in chemical, cosmetic and automotive industries. This compound has a "detergency" property because it has an amphilic molecule. the raw material that used is methyl esters, but the use of methyl esters needs to be considered because it can cause excessive foam in its use. This study uses castor oil as a raw material for triglycerides. Because of its nature, the alkanolamide can act as a surfactant. Hence, the surfactant of alkanolamide type environmentally-friendly and biodegradable surfactant from renewable sources. This study aims to identify amide compounds from reaction between triglyceride and diethanolamine with KOH catalyst. From the FTIR analysis result, the C=O compound formed has a wavelength 1618,88 cm-1, the best result of GC-MS is the compound diethanolamide oleat with 38% similarity