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All Journal Agrointek Jurnal Sain Peternakan Indonesia Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Jurnal Teknologi Pertanian agriTECH Jurnal Agroindustri Industria: Jurnal Teknologi dan Manajemen Agroindustri Indonesian Food and Nutrition Progress AGRITROPICA : Journal of Agricultural Sciences JMM (Jurnal Masyarakat Mandiri) Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS
Yuwana Yuwana
Jurusan Teknologi Pertanian Fakultas Pertanian Universitas Bengkulu Jalan WR. Supratman, Kandang Limun, Bengkulu 38371, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Veterinary Other

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CATFISH DRYING (Clarias Batraclus) USING ‘TEKO BERSAYAP’ SOLAR DRYER Yuwana Yuwana
Jurnal Agroindustri Vol 2, No 1 (2012)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.2.1.14-20

Abstract

Experiment on catfish drying employing ‘Teko Bersayap’ solar dryer was conducted. The result of the experiment indicated that the dryer was able to increase ambient temperature up to 44% and decrease ambient relative humidity up to 103%. Fish drying process followed equations : KAu = 74,94 e-0,03t for unsplitted fish and KAb = 79,25 e-0,09t for splitted fish, where KAu = moisture content of unsplitted fish (%), KAb = moisture content of splitted fish (%), t = drying time. Drying of unsplitted fish finished in 43.995 hours while drying of split fish completed in 15.29 hours. Splitting the fish increased 2,877 times drying rate.
“TEKO BERSAYAP” MODEL SOLAR DRYER FOR FISH DRYING Yuwana Yuwana; Bosman Sidebang; Evanila Silvia
Jurnal Agroindustri Vol 6, No 2 (2016)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.6.2.51-56

Abstract

This objective of this research was to design a dryer called “Teko Bersayap” model and then to test its performance in drying fish in order to solve problems arising from open air sun drying. The dryer consisted of drying chamber with trays inside, heat collectors equipped with air inlets at their lower ends, chimney with an exhaust fan inside and humid air outlet at its upper end, was constructed to dry fish, “Bleberan (Pepetak Leiognatus spp)” species. The results of the experiment indicated that the dryer produced the drying chamber temperature 8.83oC higher than the ambient temperature and the relative humidity 13.91% lower than the ambient relative humidity. The fish moisture content decreased exponentially with drying time and the dryer completed the fish drying process in 18.9 hours compared to 27.6 hours of drying time needed to complete the sun drying for the fish, suggesting that the dryer was ready for utilization
PERFORMANCE OF MODIFIED YSD-UNIB12 SOLAR DRYER FOR CLOTHES MATERIAL DRYING Yuwana Yuwana; Bosman Sidebang; Evanila Silvia
Jurnal Agroindustri Vol 3, No 2 (2013)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.3.2.98-104

Abstract

YSD-UNIB12 solar dryer has been modified its interior by replacing the trays with rail suitable for clothes hanger and size in order to be applied to dry clothes. The dryer had 3 x 6 m2 total area with about 300 pieces of clothes capacity. The dryer finishes drying of wet towel faster (about 12 hours) than that of sun drying (more than 18 hours). The dryer also completed drying of “batik” cloth comparable to that of sun drying (about 13 hours) and drying of singlet faster (12 hours) that of sun drying (13 hours). The modified YSD-UNIB12 resulted better quality of dry cloth and was ready to be adopted for drying clothes
STUDY ON PALM OIL LEAF STEM AS BIOMASS FUEL FOR YTP-UNIB-2013 DRYER Wahyudi Febrianto Putra; Yuwana Yuwana; Bosman Sidebang
Jurnal Agroindustri Vol 4, No 2 (2014)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.4.2.93-99

Abstract

Purpose of this research was to determine the relation between fuel supply and temperature in the drying chamber of YTP-UNIB-2013 Biomass Dryer; and to describe performance of the dryer operated using palm oil leaf stem as the biomass fuel.  The stems were cleaned out of  leaves, cut into 5-7 cm in length, dried so that their water content less then 10%.Temperature and humidity were recorded every 15 minutes p to 3 hours of burning. In order to maintain maximal temperature in the drying chamber, biomass fuel was added at the time the temperature start decreasing. The time for the additional sample to be burned was recorded.  Each of burning sample process was repeated three time to have accurate data. Result of regression analysis showed that drying chamber temperatures (T) were related to the amount of palm oil stems as biomass fuel by following an equation of T = 12.013Q + 16.293 with coefficient of determinant R² = 0.8706.  Performance tests of the Biomass Dryer indicated that by using 4.4 kg/hour of palm oil stem as biomass fuel, average temperature of the chamber dryer was 65°C and capable of evaporating clear water up to 2,548 kg/hour. Therefore it could be concluded that in general, workability of the YTP-UNIB-2013 Biomass Dryer by using palm oil leaf stem as the biomass fuel was effective.
Pemanfaatan Limbah Biji Durian (Durio zibethinus Murr) sebagai Bahan Penstabil Es Krim Susu Sapi Perah Sistanto Sistanto; E. Sulistyowati; Yuwana Yuwana
Jurnal Sain Peternakan Indonesia Vol 12, No 1 (2017)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jspi.id.12.1.9-23

Abstract

Berlimpahnya limbah biji durian pada musim durian belum banyak dimanfaatkan, disisi lain  biji durian berpotensi sebagai sumber bahan makanan. Penelitian ini bertujuan untuk mengidentifikasi nutrisi biji durian yang dijadikan tepung dan pengaruhnya jika dimanfaatkan sebagai bahan penstabil es krim susu sapi perah. Materi penelitian terdiri dari biji durian yang dijadikan tepung, susu segar, susu bubuk skim, tepung maizena, gula halus, whipping cream dan yolk. Metode penelitian yang digunakan yaitu Rancang Acak Lengkap dengan 5 perlakuan dan 4 ulangan. Perlakuan adalah penggunaan tepung biji durian konsentrasi 0,9% (TBD1); 1,1% (TBD2); 1,3% (TBD3) ; 1,5% (TBD4) dan es krim komersial (Kontrol). Variabel pengamatan meliputi kadar air, kadar abu, lemak, protein, serat kasar dan gross energy (GE) menggunakan Bomb calorimeter dengan analisis proksimat. Pengamatan es krim meliputi pH, kecepatan meleleh, viskositas dan overrun. Data hasil penelitian dianalisis menggunakan ragam ANOVA dan uji lanjut Beda Nyata Terkecil (BNT) dengan program XL stat. Hasil penelitian menunjukan bahwa, pengunaan tepung biji durian (TBD) sebagai bahan penstabil es krim susu sapi perah secara statistik berpengaruh nyata (p<0,05) terhadap nilai pH dan viskositas es krim (cP), serta tidak berpengaruh nyata (p>0,05) terhadap kecepatan meleleh (menit) dan overrun (%) dengan nilai pH terbaik pada perlakuan kontrol (6,40) dan TBD1 (6,20), kecepatan meleleh terlama pada perlakuan TBD3 (30,14 menit per 50 ml), viskositas tertinggi 335,00 cP (perlakuan TBD2 dan TBD3) dan overrun paling baik yaitu  74,26% (perlakuan TBD4). Semakin besar level penggunaan TBD dalam adonan es krim menunjukan bahwa semakin meningkatkan nilai overrun. Kata kunci : tepung biji durian, es krim, bahan penstabil
IDENTIFIKASI OBYEK WISATA UNTUK PENGEMBANGAN KAWASAN WISATA BERKELANJUTAN DI KECAMATAN KABAWETAN KABUPATEN KEPAHIANG Dwi Tyas Pambudi; Yuwana Yuwana; Damres Uker
Naturalis: Jurnal Penelitian Pengelolaan Sumber Daya Alam dan Lingkungan Vol. 10 No. 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.10.2.20395

Abstract

Penelitian ini untuk memberikan gambaran pengembangan obyek wisata berkelanjutan di Kecamatan Kabawetan di lihat dari variabel perkembangan dan diversitas ekonomi wilayah Kacamatan Kabawetan, inventarisasi potensi obyek wisata yang ada, identifikasi faktor utama yang mempengaruhi minat wisatawan berkunjung ke obyek wisata. Jenis penelitian yang digunakan adalah penelitian deskriptif dengan pendekatan kualitatif. Dari analisis data PDRB, perkembangan ekonomi Kecamatan Kabawetan berada pada urutan ke 5 (lima) dari delapan kecamatan dengan sumbangan PDRB sebesar Rp.273.087.870 dengan sektor penyumbang terbesar pada bidang usaha pertanian. Kecamatan Kabawetan memiliki 17 potensi obyek wisata yang terdiri dari a) terdapat 10 potensi obyek wisata alam; b) wisata buatan terdapat 5 (lima) obyek wisata dan; c) terdapat 2 (dua) obyek wisata sejarah. Berdasarkan analisis skoring, terdapat 6 (enam) Obyek Wisata di Kecamatan Kabawetan yang memiliki kelas berpotensi untuk pengembangan, yaitu: Kebun Teh Kabawetan, Air Terjun Tirta Mandiri, Mountain Valley, Air Terjun Sengkuang, Taman Kabawetan, dan Rest Area 1. Terdapat 4 obyek wisata cukup berpotensi, yaitu: Pabrik Pengolahan Teh, Rumah Belanda, Kampung Kopi, Kebun Bunga Dama Sari Flower, dan Kebun Teh Trisula. Adapun 6 (enam) obyek wisata memiliki kelas kurang berpotensi. Dari analisis persepsi wisatawan yang berkunjung, obyek wisata memiliki modal pengembangan yaitu: 1) Modal Lingkungan, dari hasil penelitian para wisatawan sangat menyukai potensi wisata alam, dengan persentase 73.33 persen; 2) Modal ekonomi, tiket yang masih terjangkau; (3) Modal Sosial yaitu obyek wisata sangat aman dan penduduknya sangat ramah, dengan sekor berturut-turut 96, 67 persen dan 93 persen. Prinsip-prinsip pengembangan pariwisata berkelanjutan di Kecamatan Kabawetan sudah dilaksanakan dilihat dari beberapa aspek seperti; a) Aspek Lingkungan; Kepedulian pengelolaan sampah, menjaga kelestarian lingkungan; b) Aspek Sosial Budaya; Keterlibatan masyarakat dalam menjaga keamanan, semangat gotong royong terjaga, Budaya masyarakat yang ramah, Budaya lokal mejadi lestari, meningkatnya SDM; c) Aspek Ekonomi; Peningkatan PAD Kabupaten Kepahiang, Peningkatan Ekonomi dan Inovasi produk makanan berbahan local, Keterlibatan Bumdes dalam pengelolaan obyek wisata.
PEMBUATAN ARANG DENGAN METODE TUNGKU PILORIS DOUBLE BURNER MENGGUNAKAN LIMBAH KAYU DENGAN METODE MANDUK DI KECAMATAN TEBING TINGGI KABUPATEN EMPAT LAWANG Jalin Elsaprike; Ridwan Yahya; Yuwana Yuwana
Naturalis: Jurnal Penelitian Pengelolaan Sumber Daya Alam dan Lingkungan Vol. 7 No. 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.7.2.6009

Abstract

Pemanfaatan limbah kayu hasil manduk menjadi arang di Kecamatan Tebing Tinggi, Kabupaten Empat Lawang dengan metode tungku pirolis double burner dihasilkan nilai kalor sebesar 7371,7 Kcal/kg, kadar air sebesar 4,7%, kadar abu sebesar 1,657%, kadar zat terbang sebesar 19,87% dan kadar karbon terikat sebesar 73,77%. Sedangkan dengan metode brick kiln diperoleh  nilai  kalor  sebesar  7222,3  Kcal/kg,  kadar  air  sebesar  5,7%,  kadar  abu  sebesar 1,870%, kadar zat terbang sebesar 28,96 % dan kadar karbon terikat sebesar 64,19%. Hasil uji statistik menunjukan bahwa untuk nilai kalor dan nilai karbon terikat yang dihasilkan dengan metode tungku pirolis double burner signifikan lebih tinggi daripada metode brick kiln, tetapi nilai kadar air, nilai zat terbang dan kadar abunya signifikan lebih rendah. Nilai kalor, kadar air, kadar abu dan kadar karbon terikat yang dihasilkan melalui kedua metode telah memenuhi persyaratan SNI Arang Kayu 01-6235-2000 tetapi nilai kadar karbon terikat belum memenuhi persyaratan tersebut, sehingga dari kedua metode yang digunakan terdapat perbedaan nyata untuk nilai kalor, nilai kadar zat terbang dan nilai karbon terikat. Namun tidak demikian halnya dengan nilai kadar air  dan kadar abu dimana nilai tersebut tidak menunjukan perbedaan nyata. Dari hasil uji perbandingan tersebut untuk nilai kalor, nilai kadar air, nilai kadar zat terbang, dan nilai karbon terikat telah memenuhi standart SNI 01/6235/2000, kecuali nilai kadar zat-zat terbang.Kata Kunci: Limbah Kayu, Manduk, Kualitas Arang, Tungku Pirolis Double Burner Dan Tungku Brick Kiln
ANALYSIS OF FACTORS AFFECTING GENERAL SUPPLIERS TO SELL FFB WITH A AND B QUALITY TO PT. SANDABI INDAH LESTARI AND RISK ANALYSIS OF THE RESOURCES Ali Setia Iskandar; Yuwana Yuwana; Bambang Sumantri
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (849.364 KB) | DOI: 10.31186/j.agritropica.2.1.1-12

Abstract

This study studies to analyze the factors that influence general suppliers to choose FFB (Fresh Fruit Bunches) on quality and quality B and calculate the business expenses to be received. This research was conducted in the period August - September 2018 at PT. Sandabi Indah Lestari (SIL). The analytical tool used in this study is multiple linear regression analysis and risk analysis. Based on the results of the analysis, the factors that influence general suppliers choose to sell FFB at quality A and quality B at PT. SIL is the average factor of the weight of FFB supplied, the weight of FFB sorted, the distance to the plant and transportation costs, while the factors that do not significantly affect the long period of receiving FFB at the plant then for the risks received are known that the risk of selling FFB quality A is greater because of loss while FFB that sells quality B is smaller because it avoids losses.Keyword: Suppliers, FFB (Fresh Fruit Bunches), quality A and B, risk
Multiple Regression Based on Impact Parameters for Bruising Prediction in Apple Yuwana Yuwana
Indonesian Food and Nutrition Progress Vol 5, No 1 (1998)
Publisher : Indonesian Association of Food Technologists

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jifnp.58

Abstract

Impact parameters were explored to be used for bruising predictions in apple by employing multiple regression analysis. All impact parameters observed were potential to be involved in the predictions except mass of fruit and impact duration. The multiple regression analysis based on maximum acceleration, velocity change, initial velocity, absorbed energy, maximum deformation and residual deformation produced a coefficient correlation (R) of 0.95 and 0.04% error for the relation between predicted bruise diameter and measured bruise diameter, a coefficient correlation (R) of 0.94 and 0.09% error for the relation between predicted bruise depth and measured bruise depth, a coefficient correlation (R) of 0.95 and 3.64% error for the relation between predicted bruise volume and measured bruise volume. The multiple regression based only on the maximum acceleration and velocity change still produced reliable bruising predictions.
PENGERING ENERGI SURYA UNTUK PENGERINGAN BAHAN PAKAIAN Yuwana Yuwana; B. Sidebang; Evanila Silvia
DHARMA RAFLESIA Vol 14, No 1 (2016): JUNI
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v14i1.4296

Abstract

This research based community service activity was conducted to solve the problem of clothes sun drying faced by students hosting in Orchid Dormitory, University of Bengkulu by introducing the further modified YSD-UNIB12 solar dryer. Strcture of dryer was 5 m x 6 m in size equipped with 2 m x 6 m drying cchamber having capacity of about 400 pieces of clothes. The dryer completed drying process of cloths made of nylon “sifón” and blouse in3 hours, and woolen cloth in 4 hours, and synthetical socks in 5 hours. The modified YSD- UNIB12 resulted better quality of dry cloth, saved time and space and minimised risk of clothes contamination. The dryer was successfully adopted by the dormitory management and inhabitants as very good solution of their their problem. Keywords: Solar energy dryer, clothes, dormitory
Co-Authors Agus Susatya Ali Setia Iskandar Andre Zuliansyah Arina Fatharani Arthia Isah Hartanti Lumbanraja Atra Romeida B. Sidebang Bambang Sumantri Bieng Brata Bonodikun Bonodikun Bosman Sidebang Budiyanto Budiyanto Damres Uker Deddy Bakhtiar, Deddy Defi Ermayendri Dwi Tyas Pambudi E. Sulistyowati Evanila Silvia Evanila Silvia Evanila Silvia Evanila Silvia Evanila Silvia Evanila Silvia Futra, Febby Dwi Iis Darniati Indarwanto Indarwanto Jalin Elsaprike Kurnia Herlina Dewi Laili Susanti Lukman Hidayat Meidi Satriawan Sipayung Mohammad Chozin Muhammad Nofal Novia Lestari Nurqutni Nurqutni Oriza Sativa Ridwan Yahya Sidebang, Bosman Sigit Mujiharjo Sigit Sudjatmiko Simon Julian Sastro Sistanto Sistanto Syafnil Syafnil Syafnil Wahyudi Febrianto Putra Wuri Marsigit Yar Johan, Yar Yudhi Harini Bertham Zainal Arifin Zainal Muktamar Zulfia Memi Mayasari Zulman Efendi