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Jurnal Litbang Industri

JLI
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Published by Kementerian Perindustrian Republik Indonesia

ISSN : 22523367 EISSN : 25025007 DOI : 10.24960

Core Subject : Engineering,

Industrial & Manufacturing Engineering

Jurnal Litbang Industri (JLI) adalah jurnal ilmiah yang terbit secara berkala dua kali setahun pada bulan Juni dan Desember. JLI memuat artikel primer yang bersumber langsung dari hasil riset industri, olahan hasil pertanian, penanggulangan pencemaran industri. Semua naskah direview oleh mitra bestari. Jurnal Litbang Industri Padang diterbitkan oleh Balai Riset dan Standardisasi industri Padang, Badan Penelitian dan Pengembangan Industri, Kementerian Perindustrian Republik Indonesia. p-ISSN: 2252-3367 e-ISSN: 2502-5007

Arjuna Subject : -

Articles 357 Documents

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Pengaruh Penggunaan Metanol Bekas Pakai Secara Berulang-Ulang Terhadap Rendemen dan Mutu Biodiesel dengan Bantuan Reaktor Kavitasi Hidrodinamik Mahlinda Mahlinda; Lancy Maurina
Jurnal Litbang Industri Vol 5, No 2 (2015)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Research on the using effect of repeatedly used methanol toward yield and quality of biodiesel assisted by hydrodinamic cavitation reactor had been done. The aim of this research was to study the effect of used methanol which is used repeatedly toward yield and quality of biodiesel products. The constant variable used in the transesterification process was the molar ratio of methanol and oil 4:1, KOH catalyst 1%, temperature 45oC and reaction time 60 minutes. The manipulated variable was the number of used methanol replications consisted of 4 replications (replication 1 using fresh methanol dan 3 replications using used methanol). The results of the research showed that biodiesel products couldn not be used directly in diesel engines because some parameters that were tested did not meet the requirements of SNI 04-7182:2006.ABSTRAKPenelitian tentang pengaruh penggunaan metanol bekas pakai secara berulang-ulang terhadap rendemen dan mutu biodiesel menggunakan reaktor kavitasi hidrodinamik telah dilaksanakan. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh penggunaan metanol bekas pakai yang dipakai secara berulang-ulang dengan mengamati rendemen dan mutu biodiesel yang dihasilkan. Variabel konstan yang digunakan pada proses transesterifikasi ini adalah rasio molar metanol dan minyak 4:1, katalis KOH 1%, temperatur 45 oC dan waktu reaksi 60 menit. Variabel berubah adalah jumlah ulangan penggunaan metanol terdiri dari 4 ulangan (ulangan 1 menggunakan metanol baru dan 3 ulangan mengggunakan metanol bekas). Hasil penelitian menunjukkan bahwa produk biodiesel yang dihasilkan tidak dapat digunakan secara langsung di mesin diesel karena beberapa parameter yang diuji tidak memenuhi persyaratan SNI 04-7182:2006.

Rekayasa Glukosa Dari Tandan Kosong Kelapa Sawit Melalui Proses Fermentasi Dengan Saccharomyces cerevisiae Menjadi Bioetanol Nasruddin Nasruddin
Jurnal Litbang Industri Vol 3, No 1 (2013)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

This research aims to study the performance of Saccharomyces cerevisiae in glucose engineering into bioethanol. Glucose comes from palm oil empty fruit bunches that had been pretreated by delignification and fermentation. Glucose solution result from hydrolysis for each treatment of 500 ml was fermented with Saccharomyces cerevisiae (2, 4, 6 and 8) g, fermentation time (4, 6, 8 and 10) days. Result of fermentation was distilled at 75°C ± 5°C for 60 minutes. Bioethanol produced were tested including: specific gravity by using picnometer and acidity was tested by volumetric methods. The analysis showed that the best bioethanol produced in this experiment, followed by laboratory tests obtained from the interaction between treatments for time of hydrolysis by Aspergillus niger for 6 days, with 4 grams of Saccharomyces cerevisiae fermentation for 6 days. Based on the test results of bioethanol obtained density 0.9873 g/cm3, percentage of bioethanol 9.2889% (v/v) and acid number value 1.820 mg/L.ABSTRAKPenelitian ini bertujuan untuk mempelajarai kinerja Saccharomyces cerevisiae merekayasa glukosa menjadi bioetanol. Glukosa berasal dari tandan kosong kelapa sawit yang telah dilakukan pretreatment dengan cara delignifikasi dan fermentasi. Larutan glukosa hasil hidrolisis untuk masing-masing perlakuan sebanyak 500 mL difermentasi dengan S. cerevisiae (2; 4; 6 dan 8) g, waktu fermentasi (4; 6; 8 dan 10) hari. Hasil fermentasi didestilasi pada suhu 75oC ± 5oC selama 60 menit. Bioetanol yang dihasilkan diuji yang meliputi : berat jenis dengan mengunakan piknometer dan keasaman diuji dengan metode volumetri. Hasil analisis menunjukkan bioetanol yang terbaik berdasarkan hasil percobaan yang dilanjutkan dengan uji laboratorium didapatkan dari interaksi antar perlakuan untuk waktu hidrolisis dengan Aspergilus niger selama 6 hari, fermentasi dengan 4 gram Saccharomyces cerevisiae selama 6 hari. Berdasarkan hasil uji bioetanol untuk berat jenis 0,9873 g/cm3, persentase bioetanol 9,2889% (v/v) dan nilai bilangan asam 1,820 mg/l.

Pengaruh Laju Alir Inlet Reaktor MSL terhadap Reduksi BOD, COD, TSS, dan Minyak/Lemak Limbah Cair Industri Minyak Goreng Salmariza Sy; Sofyan Sofyan; Hendri Muchtar; Monik Kasman
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

This research was conducted by treating edible oil industry wastewater used Multi Soil Layering (MSL) method. The MSL reactor was built from a 200x120x200 cm concrete basin. Andisol soil was mixed with sawdust and fine charcoal at each ratio 5:1:1 based on dry weight as an impermeable layer. The flow rate variations were 250, 500, 1000, and 1500 L/m2.day. The observed pollutant parameters were BOD, COD, TSS, oil/fat, and pH. The results showed that MSL reactor was effective to decrease the pollutant content of edible oil industry wastewater. The reactor could reduce concentration of effluent parameters below standard except for oil/fat parameters at high flow rates. In the effluent was found BOD 0.66-14.22 mg/L, COD 5-69 mg/L, TSS 9-26 mg/L, and oil/fat 2-9 mg/L. The flow rate had an effect on reduction efficiency of BOD, COD, TSS, and oil/fat but did not effect pH as all flow rate could raise pH 6.37-6.95 became pH 6.99-7.24. The lower the flow rate the higher the reduction efficiency. The reduction efficiency at flow rates 250 and 1500 L/m2 days for BOD were 99% and 86%, COD were 96% and 71%, TSS were 88% and 77%, and oil/fat were 80% and 60%.ABSTRAK Penelitian ini dilakukan dengan mengolah air limbah industri minyak goreng menggunakan metoda Multi Soil Layering (MSL). Reaktor MSL dibuat dari beton berbentuk bak ukuran 200x120x200 cm. Tanah andisol dicampur dengan serbuk gergaji dan arang halus pada rasio masing-masing 5:1:1 berdasarkan berat kering sebagai penyusun lapisan impermeable. Variasi laju alir yaitu 250, 500, 1000, dan 1500 L/m2.hari. Parameter pencemar yang dianalisis meliputi BOD, COD, TSS, minyak/lemak, dan pH. Hasil penelitian menunjukkan bahwa reaktor MSL sangat efektif untuk menurunkan kandungan zat pencemar limbah cair industri minyak goreng. Reaktor dapat mereduksi konsentrasi parameter outlet sampai dibawah baku mutu yang distandarkan kecuali untuk parameter miyak/lemak pada perlakuan laju alir tinggi. Pada effluen didapatkan nilai BOD 0,66-14,22 mg/L, COD 5-69 mg/L, TSS 9-26 mg/L, dan minyak/lemak 2-9 mg/L. Laju alir berpengaruh terhadap efisiensi reduksi BOD, COD, TSS, dan minyak/lemak, tetapi tidak berpengaruh terhadap pH dimana semua perlakuan laju alir dapat menaikkan pH 6,37-6,95 menjadi pH 6,99-7,24. Makin rendah laju alir maka makin tinggi efisiensi reduksi. Efisiensi reduksi pada laju alir 250 dan 1500 L/m2 hari untuk BOD adalah 99% dan 86%, COD 96% dan 71%, TSS 88% dan 77%, dan minyak/lemak 80% dan 60%.

Model Biaya Produksi Biodiesel Berbasis Minyak Sawit Meilita Tryana Sembiring; Sukardi Sukardi; Ani Suryani; Muhammad Romli
Jurnal Litbang Industri Vol 5, No 1 (2015)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Biodiesel is a renewable energy source in Indonesia of which the use is regulated by the government in the form of mandatory policy of biodiesel and diesel fuel blending. The production of biodiesel in Indonesia is not developed (the need is 3.4 million kiloliters but the total national production is only 1,703 kiloliters). It is because the selling price (referring to Mean of Platts Singapore) is always lower than the production cost. Biodiesel production is influenced by raw materials and process technology, so it needs to be conducted biodiesel production modeling as a basis in determining the supporting policies of biodiesel selling price. The purpose of this study is to identify the raw materials, process technology, and modeling the production cost structure of palm oil-based biodiesel. Identification of raw materials was conducted by literature study and field survey to biodiesel producers. Identification of process technology was conducted by field survey and mass balance calculation using Grand Inizio technology to get the number of yield of each raw material. Then, production cost study was based on the specifications of raw materials and process technology with heuristic approach. Types and specifications of palm oil widely used by Indonesian producers are Crude Palm Oil (CPO) FFA<5%, Refined Palm Oil (RPO) FFA<5%, Refined Oil FFA<1%, Palm Fatty Acid Distillated (PFAD) FFA 90%. The technology process used was transesterification for FFA level <1% and esterification-transesterification for FFA level <5%. The resulting yield for 1000 kg of raw material is 1051.75 kg CPO, 975.94 kg RPO and PFAD, 973.81 kg Refined Oil with Grand Inizio technology approach. The production cost model represents the total production cost influenced by the costs of Inside Battery Limit, Outside Battery Limit, general cost and glycerol value-added.ABSTRAKBiodiesel adalah sumber energi terbarukan di Indonesia yang diatur penggunaannya oleh pemerintah dalam bentuk kebijakan mandatori pencampuran biodiesel dengan solar (biosolar). Produksi biodiesel di Indonesia tidak berkembang (kebutuhan 3.4 juta kiloliter namun total produksi nasional hanya 1.703 kiloliter). Hal tersebut disebabkan harga jual (mengacu Mean of Platts Singapore) yang selalu lebih rendah dibandingkan biaya pokok produksi. Produksi biodiesel dipengaruhi oleh bahan baku dan teknologi proses, sehingga perlu dilakukan pemodelan produksi biodiesel sebagai landasan dalam menentukan kebijakan pendukung harga jual biodiesel. Tujuan penelitian ini adalah mengidentifikasi bahan baku, teknologi proses, dan memodelkan struktur biaya produksi biodiesel berbasis minyak sawit. Identifikasi bahan baku dilakukan dengan studi literatur dan survei lapangan ke produsen biodiesel. Identifikasi teknologi proses dilakukan dengan survei lapangan dan perhitungan neraca massa dengan teknologi Grand Inizio untuk mendapatkan jumlah rendemen dari masing-masing bahan baku. Selanjutnya kajian biaya produksi dilakukan berdasarkan spesifikasi bahan baku dan teknologi proses dengan pendekatan heuristik. Jenis dan spesifikasi minyak sawit yang banyak digunakan produsen di Indonesia adalah Crude Palm Oil (CPO) ALB<5%, Refined Palm Oil (RPO) ALB<5%, Refined Oil ALB<1%, Palm Fatty Acid Distillated (PFAD) ALB 90%. Teknologi proses yang digunakan adalah transesterifikasi untuk kadar ALB<1% dan esterifikasi-transesterifikasi untuk kadar ALB<5%. Rendemen yang dihasilkan untuk 1000 kg bahan baku adalah CPO 1051.75 kg, RPO dan PFAD 975.94 kg, Refined Oil 973.81 kg dengan pendekatan teknologi Grand Inizio. Model biaya produksi merepresentasikan total biaya produksi yang dipengaruhi oleh biaya Inside Battery Limit, Outside Battery Limit, biaya umum dan nilai tambah gliserol.

Determination of Benzoic Acid, Sodium Saccharin, And Caffeine By High Performance Liquid Chromatography Arief Yandra Putra; Fitri Mairizki; Hamzar Suryani; Safni Safni
Jurnal Litbang Industri Vol 2, No 2 (2012)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Concentrations of benzoic acid, sodium saccharin and caffeine in soft drink samples were determined by using Reverse Phase High Performance Liquid Chromatography (HPLC). The optimum analytical conditions of those three samples was methanol-phosphate buffer (1:7) as mobile phases, with pH 4.5 and flow rate 1.0 mL/min, column C18 (150x4.6 mm i.d.) as stationary phases at 400C with UV-Vis Spectrophotometer detection at 220 nm. The concentration level of those compounds observed was not beyond the maximum limit of SNI 01-011101995 for sodium saccharin and benzoic acid and SNI 01-6684-2002 for caffeine. The relative standard deviation based on retention time and peak area, as 0.37% and 0.59% for benzoic acid, 0.16% and 0.21% for sodium saccharin, 0.38% and 0.6% for caffeine. Finally, the recovery for benzoic acid, sodium saccharin and caffeine was 100.82%, 94.92% and 90.32%, respectively. The relative standard deviation and recovery of all samples met AOAC method requirements.ABSTRAKPenelitian tentang penentuan asam benzoat, natrium sakarin dan kafein telah dilakukansecara Kromatografi Cair Kinerja Tinggi (KCKT) Fasa Balik. Kondisi optimum analisis dariketiga senyawa di atas adalah fasa gerak metanol-bufer fosfat (1:7) dengan pH 4,5, laju alir 1 mL/min, kolom C18 (150 x 4,6 mm i.d.) dengan temperatur 40oC dan pendeteksiandengan Spektrofotometer UV/Vis pada panjang gelombang 220 nm. Metoda ini diaplikasikan pada beberapa sampel minuman ringan. Kadar ketiga senyawa ini di dalam sampel tidak melebihi batas maksimum yang diizinkan yaitu berdasarkan SNI 01-0222-1995 untuk natrium sakarin dan asam benzoat serta SNI 01-6684-2002 untuk kafein. Standar Deviasi Relatif ketiga senyawa ini berdasarkan waktu retensi dan luas puncak secara berturut-turut adalah; asam benzoat 0,37% dan 0,59%, natrium sakarin 0,16% dan 0,21%, kafein 0,38% dan 0,60%. Hasil perolehan kembali dari ketiga senyawa ini adalah asam benzoat 100,82%, natrium sakarin 94,92%, kafein 90,32%. Standar Deviasi Relatif dan perolehan kembali ketiga senyawa ini memenuhi persyaratan metoda AOAC.

Reduksi pencemar limbah cair industri tahu dengan tumbuhan melati air (Echinodorus palaefolius) dalam sistem kombinasi constructed wetland dan filtrasi Monik Kasman; Anggrika Riyanti; Salmariza Sy; Muhammad Ridwan
Jurnal Litbang Industri Vol 8, No 1 (2018)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Tofu industry wastewater contains high organic material which reduces dissolved oxygen, contaminates water, and odor that potentially contaminates and pollutes receiving surface water. Constructed wetland is one of the recently proven efﬁcient technologies for wastewater treatment. This is due to vegetation diversity. Constructed wetland systems have been developed using water jasmine plants combined with filtration systems for the reduction of BOD, TSS, and oil and grease in tofu wastewater as a function of detention time. Detention times were varied at 5, 7, 9, 11, 13, and 15 days. The results revealed that the reduction of BOD, TSS, and oil and grease was influenced by detention time. The reduction efficiency of BOD, TSS, and oil and grease decreased with increasing the detention time. The combined system of constructed wetland and filtration using water jasmine plants effectively reduces the pollution parameters in tofu industry wastewater with a reduction efficiency for BOD, TSS, and oil and greasel of 52-95%, 45-67%, and 59-78% respectively with concentration of 97 mg/L, 40 mg/L, and 4.2 mg/L at the detention time of 15 days. This results fulfill the requirement of the liquid waste standard according to the Minister of Environment Regulation No. 5 year 2014.AbstrakLimbah cair industri tahu mengandung bahan organik tinggi yang dapat menurunkan oksigen terlarut, mengotori, dan menimbulkan bau menyengat sehingga berpotensi mencemari perairan penerima. Constructed wetland merupakan salah satu teknologi pengolahan limbah cair yang efisien, efektif, dan tepat guna karena menggunakan keragaman vegetasi. Penelitian sistem constructed wetland menggunakan tanaman melati air (Echinodorus palaefolius) yang dikombinasikan dengan sistem filtrasi bertujuan untuk penurunan pencemar BOD, TSS, dan minyak lemak dalam limbah cair industri tahu sebagai pengaruh variasi waktu detensi. Waktu detensi meliputi 5, 7, 9, 11, 13, dan 15 hari. Hasil penelitian menunjukkan bahwa reduksi pencemar BOD, TSS, dan minyak lemak dipengaruhi oleh waktu detensi. Efisiensi reduksi BOD, TSS, dan minyak lemak meningkat dengan bertambahnya waktu detensi. Sistem kombinasi constructed wetland dan filtrasi menggunakan tumbuhan melati air efektif mereduksi parameter pencemar limbah cair industri tahu dengan efisiensi reduksi untuk BOD, TSS, dan minyak lemak berturut-turut 52-95%, 45-67%, dan 59-78% dengan konsentrasi 97 mg/L, 40 mg/L dan 4,2 mg/L pada waktu detensi 15 hari. Hasil ini mememenuhi baku mutu limbah cair industri tahu sesuai Peraturan Menteri Lingkungan Hidup No. 5 tahun 2014.

Adsorbsi Ion Cr (VI) Menggunakan Adsorben dari Limbah Padat Lumpur Aktif Industri Crumb Rubber Salmariza Salmariza; Mardiati Mardiati; Mawardi Mawardi; Sofyan Sofyan; Ardinal Ardinal; Yudo Purnomo
Jurnal Litbang Industri Vol 6, No 2 (2016)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Research on ion Cr(VI) adsorption by using adsorbent from waste activated sludge crumb rubber industry has been done with static method (batch). The samples were fresh activated sludge solid waste of crumb rubber industry and carbonized sludge continued by KOH activated. Parameter were studied including solution pH, contact time, and initial Cr(VI) ion concentration. The results reveal that the crumb rubber industrial waste activated sludge contained high silica and alumina, there were 49.02% and 16.498% respectively, so it can be used as an adsorbent. The adsorbent exhibited good adsorption potential at pH 1 for the KOH activated sludge adsorbent and pH 2 for the fresh sludge adsorbent, with 120 minutes optimum contact time and 70 mg/L initial concentration for each adsorbent type. Adsorption data were well described by the Langmuir isotherm with maximum adsorption capacities of 2.075 mg/g and 2.232 mg/g for KOH activated sludge adsorbent and fresh sludge adsorbent respectively.ABSTRAKPenelitian tentang adsorbsi ion Cr(VI) dengan menggunakan adsorben dari limbah padat lumpur aktif industri crumb rubber telah dilakukan dengan metode statis (batch). Sampel yang digunakan adalah limbah padat lumpur aktif industri crumb rubber segar dan lumpur yang dikarbonisasi serta diaktivasi dengan KOH. Parameter yang dipelajari yaitu pH awal larutan, waktu kontak, dan konsentrasi ion Cr(VI). Hasil penelitian menunjukan bahwa limbah padat lumpur aktif industri crumb rubber mengandung silika dan alumina yang tinggi yaitu 49,0% dan 16,5%, sehingga dapat digunakan sebagai adsorben. pH optimum adsorben untuk lumpur diaktivasi yaitu pada pH 1 dan lumpur segar pada pH 2. Waktu kontak optimum yaitu 120 menit dan konsentrasi ion Cr(VI) optimum 70 mg/L untuk masing-masing adsorben. Data sesuai dengan isotherm Langmuir dengan kapasitas serapan maksimum terhadap ion Cr(VI) 2,075 mg/g untuk adsorben lumpur diaktivasi dengan KOH dan 2,232 mg/g untuk adsorben lumpur segar.

Pengaruh Penambahan Peppermint (Mentha piperita, L.) Terhadap Kualitas Teh Daun Pegagan (Centella asiatica, L. Urban) Tuty Anggraini; Diana Silvy; Sahadi Didi Ismanto; Firdaus Azhar
Jurnal Litbang Industri Vol 4, No 2 (2014)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

The aim of this research was to determine the effect of peppermint extract toward quality of pegagan leaves tea. The research using a completely randomized design (CRD) consisted of 5 treatments and 3 replications. Data was analyzed statistically using ANOVA that followed by a test of Duncan's New Multiple Range Test (DNMRT) at the 5% significance level. The treatments were without the addition of peppermint extract, addition of peppermint extract 1%, 2%, 3%, and 4%. Observation of the pegagan leaves tea consisted of moisture content, ash content, antioxidant activity test, a qualitative test of triterpenoids and steroids compounds, qualitative test of alkaloids compounds, total polyphenol content, and sensory evaluation. The results showed that the addition of peppermint extract significantly affected the moisture content, ash content, antioxidant activity and total polyphenol content of pegagan leaves tea. The results of sensory evaluation showed that the addition of 4% pepermint extract was the best treatment with water content (4.10%), ash content (14.23%), antioxidant activity (55.22%), containing triterpenoid and steroid compounds, containing alkaloid compound, and total polyphenols value (11.88%).ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penambahan ekstrak peppermint terhadap kualitas teh daun pegagan. Penelitian menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 5 perlakuan dan 3 kali ulangan. Data dianalisis secara statistika dengan menggunakan ANOVA dan jika berbeda nyata, dilanjutkan dengan uji Duncan’s New Multiple Range Test (DNMRT) pada taraf nyata 5% dengan perlakuan: tanpa penambahan ekstrak peppermint, penambahan ekstrak peppermint 1%, 2%, 3 %, dan 4%. Pengamatan pada teh daun pegagan dengan penambahan ekstrak peppermint meliputi uji kadar air, kadar abu, uji aktivitas antioksidan, uji kualitatif senyawa triterpenoid dan steroid, uji kualitatif senyawa golongan alkaloid, uji kandungan total polifenol, dan uji organoleptik. Hasil penelitian menunjukkan bahwa penambahan ekstrak peppermint berpengaruh nyata terhadap uji kadar air, kadar abu, aktivitas antioksidan, dan kandungan total polifenol teh daun pegagan yang dihasilkan. Hasil uji organoleptik menunjukkan penambahan ekstrak peppermint 4% sebagai produk terbaik dengan nilai kadar air (4,10%), kadar abu (14,23%), aktivitas antioksidan (55,22%), mengandung senyawa triterpenoid dan steroid, mengandung senyawa alkaloid, dan nilai total polifenol (11,88%).

Penentuan Sifat Termofisik Temu Lawak dan Temu Putih Lamhot P Manalu; Amos Amos; Wahyu Wahyu; Purwanto Purwanto
Jurnal Litbang Industri Vol 2, No 1 (2012)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

The most important limitation in process design for agricultural products is the lack of information on their thermal properties. Although a lot of experimental data can be found, the variety of products and the differences in measurement method make limitation on the value of the available data, especially for Indonesia's products. These data are required to get information about temperature change when product is processed like heating or cooling. It is worth due to optimizing the efficiency of energy. The objective of this study was to determine thermal diffusivity and conductivity of java turmeric and zedoary herbs. The values were determined numerically with indirect methods. The result showed that specific heat of java turmeric and zedoary were 2.835 kJ/ kgoC and 2.863 kJ/ kgoC, thermal conductivity were 0.2797 W/moC and 0.1359 W/moC, respectively, while thermal diffusivity were 9.34x10-8 m2/s and 1.00x10-7 m2/s, respectively.ABSTRAKDalam merancang suatu sistem proses dan peralatan pengolahan hasil pertanian diperlukan pengetahuan tentang sifat-sifat panas suatu bahan diantaranya panas jenis, konduktivitas, dan difusivitas panas. Nilai-nilai tersebut untuk produk pertanian lokal sangat jarang ditemukan, sehingga dalam aplikasinya sering digunakan data sifat panas dari literatur luar yang belum tentu sesuai dan tepat dengan produk dalam negeri. Hal ini dapat menyebabkan terjadinya bias dalam perhitungan dan perancangan. Studi ini bertujuan untuk menentukan sifat-sifat/properti panas dari tanaman obat temu lawak dan temu putih. Hasil studi mendapatkan bahwa panasjenis temu lawak dan temu putih adalah masing-masing 2.835 kJ/ kgoC dan 2.863 kJ/ kgoC, konduktivitas panas masing-masing adalah 0.2797 W/moC dan 0.1359 W/moC, sedangkan nilai difusivitas panasnya masing-masing adalah 9.34x10-8 m2/detik dan 1.00x10-7 m2/detik.

Karakteristik Sponge Cake Berbahan Dasar Tepung Beras Merah, Hitam, dan Putih dari Beberapa Daerah di Sumatera Barat Tuty Anggraini; Yossie Kharisma Dewi; Kesuma Sayuti
Jurnal Litbang Industri Vol 7, No 2 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Pigmented rice such as red and black rice contains bioactive compound including flavonoids that can act as antioxidants. However, the use of red and black rice has not been as popular as white rice thus need to improve the utilization of these type of rice. The alternative is conducted by increasing the fiber and antioxidant intake. Red and black rice can be utilized as the main material to make sponge cake. West Sumatera had many cultivars of black, red, and white rice. The research was aimed to know the antioxidant activity, polyphenols, anthocyanin and the physical characteristics of the sponge cake from different varieties of red, black, and white rice from some areas in West Sumatra. The results showed that the sponge cake of black rice had the highest value of antioxidants, polyphenols, and anthocyanin as well as the physical characteristics compared to sponge cake of red and white rice. Sponge cake of black rice from Solok Selatan was the best product with antioxidant activity 44.94%, at a concentration 1000 ppm, total polyphenols 13.79%, and anthocyanin content 10.31 mg/l.ABSTRAKBeras berpigmen seperti beras merah dan beras hitam mengandung sejumlah komponen bioaktif, seperti senyawa flavonoid yang dapat berperan sebagai antioksidan. Namun, penggunaan beras merah dan hitam belum sepopuler beras putih sehingga perlu dilakukan suatu alternatif untuk meningkatkan pemanfaatan jenis beras tersebut guna meningkatkan asupan serat dan antioksidan. Beras merah dan beras hitam dapat dimanfaatkan sebagai bahan utama dalam pembuatan sponge cake. Sumatera Barat memiliki banyak kultivar beras hitam, merah dan putih. Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan, kadar polifenol, antosianin serta karakteristik fisik sponge cake dari berbagai varietas beras merah, hitam dan putih dari beberapa daerah di Sumatera Barat. Hasil penelitian menunjukkan bahwa sponge cake beras hitam memberikan nilai antioksidan, kadar polifenol dan antosianin yang lebih tinggi, serta karakteristik fisik yang lebih baik dibanding sponge cake beras merah dan putih. Spongecake dari beras hitam varietas Solok Selatan dipilih menjadi produk terbaik dengan aktivitas antioksidan 44,94% pada konsentrasi 1000 ppm,total polifenol 13,79% dan kandungan antosianin 10,31 mg/L.

Page 18 of 36 | Total Record : 357

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Home Page

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Reviewer

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Abstract

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Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA