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All Journal REKAYASA agriTECH Jurnal Ecodemica : Jurnal Ekonomi Manajemen dan Bisnis Jurnal Teknologi Pengolahan Pertanian Teknologi dan Industri Pertanian Indonesia Jurnal Ilmiah Mahasiswa Pertanian Buletin Pengabdian Rona Teknik Pertanian
Rita Khathir
Program Studi Pertanian, Fakultas Pertanian, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Public Health Social Sciences

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Performansi Alat Pengering Terowongan Tenaga Surya Tipe Hohenheim untuk Pengeringan Kerupuk Tiram Rita Khathir; Eka Pratika Sari; Raida Agustina
agriTECH Vol 40, No 4 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.035 KB) | DOI: 10.22146/agritech.52889

Abstract

The aim of this study is to evaluate the performance of type Hohenheim solar tunnel dryer in drying Oyster kerupuk. This dryer was designed based on solar energy under two systems i.e. by using a solar collector and a greenhouse effect. The dryer has a dimension of 2 m length and 1m width, with about 1.5 m² and 0.5 m² drying and absorber area, respectively. In addition, oyster kerupuk were dried at 3 different depth layers, including at 2, 4, and 6 mm, and the parameters observed comprise solar irradiation, temperature and humidity, moisture and the protein content of oyster kerupuk. The results showed an average solar irradiation of 370-390 W/m², with potential application between 9.00 am-17.00 pm, daily. Moreover, the temperature at the drying chamber was gained within the range 39.7-40.9 °C, while the average ambient temperature was 31.3-3.6 °C. The drying chamber had a relative humidity of 47.8-50.5%, and was reportedly lower than the ambient value. Furthermore, the drying time used at a 2 mm layer depth was 10 h, while 12 hours was required for the 4 and 6 mm. The moisture content of samples at 2, 4, and 6 mm was 6.5%, 10.08 and 9.68%, respectively, while the protein composition was 6.52%, 7.62%, and 8.89%, correspondingly. Hence, the Hohenheim tunnel dryer is estimated to possess adaptive characteristics required for the drying process of oyster kerupuk at the 6 mm depth, although further evaluation is needed to improve its performance. 
Uji Performansi Alat Pengering Tipe Terowongan Hohenheim Aceh Dengan Aplikasi Proportional Integral Derivative Controller Untuk Kipas Outlet Rita Khathir; Sri Hartuti; Ulfa Hardiyanti
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.15541

Abstract

The purpose of this study was to evaluate the performance of Hohenheim Aceh type solar tunnel dryer with the application of proportional integral derivative (PID) controller for outlet fans. The instrumentations used were solar tunnel dryer type Hohenheim Aceh, HTC-meter, anemometer, pyranometer, and other supporting equipments. The results showed that during the drying process solar irradiation had fluctuated, where the average solar irradiation was 649 W/m2. The average temperature in the drying chamber is 40.6°C while the average temperature in the environment is 32.9°C. Conditions in the drying chamber were suitable for drying because the temperature inside the dryer was relatively higher than the ambient temperature. The average relative humidity (RH) in the drying chamber was 36% and the average RH in the environment was about 40%. The relationship between temperature and RH value was negative and strong indicated bu r-value of 0.7379. On the other hand, the relationship between solar irradiation and temperature was positive and also strong indicating that the energy source for this dryer was from solar irradiation with an R-square of 86.02% and r-value of 0.92747. The application of PID controller had improved the performance of Hohenheim Aceh type solar tunnel dryer by preventing the incident of unproper drying temperature. However, the airflow in the drying chamber was too low thus the further engineering design is needed to improve the drying system.
Pengaruh Metode Blanching Terhadap Karakteristik Pengeringan Cabai Rawit Hijau Menggunakan Alat Pengering Terowongan Hohenheim Aceh Rita Khathir; Marai Rahmawati; Hendri Syah; Muhammad Pari Zahari
Jurnal Teknologi Pengolahan Pertanian Vol 4, No 2 (2022): Jurnal Teknologi Pengolahan Pertanian
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

 Penelitian ini bertujuan untuk melihat karakteristik pengeringan cabai rawit hijau (Capsicum frustescens) yang diberi perlakuan blanching dan dikeringkan dengan alat pengering terowongan Hohenheim Aceh. Penelitian ini menggunakan rancangan 1 faktor blanching dengan 3 taraf perlakuan yaitu non blanching (B0), hot water blanching pada suhu 90ºC selama 2 menit (B1), dan steam blanching pada suhu 95ºC selama 1 menit (B2). Setiap perlakuan diulang sebanyak 3 kali dan sebanyak 1kg cabai rawit digunakan per satuan percobaan. Parameter yang diamati adalah iradiasi matahari, suhu, kelembaban relatif, perubahan berat sampel, kadar air, rendemen, vitamin C, tingkat penerimaan konsumen dan warna. Teknik analisa data meliputi analisis laju pengeringan, energi pengeringan, dan efisiensi pengeringan. Hasil penelitian ini menunjukkan bahwa proses pengeringan cabai rawit hijau yang diberi perlakuan steam blanching dapat mempercepat proses pengeringan dengan kualitas yang lebih baik. Perlakuan steam blanching menghasilkan laju pengeringan cabai rawit tertinggi, nilai efisiensi pengeringan tertinggi, dan penyimpangan warna paling rendah dibandingkan cabai rawit segar. Hal ini didukung oleh kinerja kendali PID pada alat pengering yang menghasilkan kombinasi suhu dan RH yang meningkatkan efektifitas proses pengeringan cabai rawit, dengan mencegah terjadinya suhu di atas 60ºC dan menciptakan sistem operasi kipas yang periodik sesuai kebutuhan.  
Optimization of Chocolate Drink Production at MSMEs Grah Indonesia using The Simplex Method Juanda Juanda; Sri Hartuti; Rita Khathir; Raida Agustina; Ahlillah Ahlillah
Jurnal Ecodemica : Jurnal Ekonomi Manajemen dan Bisnis Vol 7, No 1 (2023): Ecodemica: Jurnal Ekonomi, Manajemen dan Bisnis
Publisher : LPPM Universitas BSI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31294/eco.v7i1.15239

Abstract

Micro, small, and medium enterprises (MSMEs) play an important role in economic growth in various regions of Indonesia. MSME Grah Indonesia produces chocolate drinks with three products, namely grass jelly cappuccino, taro, and chocolate pop ice. The weaknesses of the MSME Grah Indonesia include limited management capabilities, capital, technology, market access, technical and non-technical costs in the field that are difficult to avoid. The study aimed to maximize the production profit of SMEs Grah Indonesia and determine the optimal number and types of beverage products using the simplex method. The simplex method can be used to maximize or minimize based on the constraint function or available resources. The results shows that the profit of the contemporary chocolate drink production of MSMEs Grah Indonesia is IDR 2,000,000 per month, with a total production of 200 cups of grass jelly cappuccino (X₁), 67 cups of taro (X₂), and 400 cups of chocolate pop ice (X₃). The raw materials needed to produce contemporary chocolate drinks at MSME Grah Indonesia are 20 kg of sugar, 10 liters of sweetened condensed milk, 200 sachets of cappuccino powder, 2 kg of taro powder, 400 sachets of chocolate pop ice powder, and grass jelly 10 kg. 
Uji Performansi Alat Pengering Tipe Hohenheim Generasi Ketiga untuk Pengeringan Pliek-U Nadiatul Hikmah; Rita Khathir; Bambang Sukarno Putra
Jurnal Ilmiah Mahasiswa Pertanian Vol 7, No 2 (2022): Mei 2022
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.97 KB) | DOI: 10.17969/jimfp.v7i2.20041

Abstract

Abstrak. Penelitian ini bertujuan untuk menguji performansi alat pengering terowongan Hohenheim generasi ketiga dalam proses pengeringan pliek-u. Parameter yang diukur pada penelitian ini adalah iradiasi surya, suhu, kelembaban relatif (RH) dan berat bahan. Pengamatan dilakukan dalam interval 1 jam selama proses pengeringan dan proses pengeringan dihentikan apabila pliek-u sudah siap untuk dipress. Proses pengeringan bersifat intermitten yaitu hanya dilaksanakan selama ada iradiasi matahari. Alat pengering terowongan Hohenheim yang diuji sudah menggunakan pengendali proportional integral derivative (PID) untuk kipas outlet dengan setting point sebesar 55°C. Hasil penelitian menunjukkan bahwa proses pengeringan berlangsung selama 2 hari dengan durasi 12 jam. Rata-rata iradiasi surya yang diperoleh adalah 593-642 W/m2. Suhu pengeringan rata-rata pada hari pertama adalah 38,2-39,4°C, sedangkan suhu pengeringan rata-rata pada hari kedua adalah 39,2-42°C. Adapun suhu tertinggi yang diperoleh selama pengamatan adalah 46,3°C, di mana suhu ini masih berada di bawah setting point pengendali PID sehingga kipas outlet berada dalam keadaan mati sepanjang proses pengeringan. Suhu pengeringan pada alat pengering terowongan Hohenheim Aceh lebih tinggi dari suhu pengeringan secara penjemuran matahari, yaitu sebesar 5—8°C. Adapun kelembaban relatif (RH) ruang pengering lebih rendah dari RH lingkungan. Kadar air pliek-u terendah sebesar 5,23% diperoleh pada metode penjemuran. Hal ini dapat dijelaskan sebagai penggunaan bahan loyang pengering dari aluminium yang konduktifitas panasnya baik serta dilakukannya proses pengeringan di atas lantai beton yang juga sangat baik dalam menyerap panas. Rata-rata pH pliek-u yang dihasilkan sebesar 5,4 dan panelis lebih menyukai pliek-u yang dikeringkan dengan alat pengering terowongan Hohenheim Aceh daripada pliek-u yang dikeringkan secara penjemuran matahari langsung.Kata kunci: Alat Pengering Hohenheim, Pliek-u, pengendali PIDThe Performance Test Of Solar Dryer Type Hohenheim Third Generation For Drying Pliek-UAbstract. The study aimed to test the performance of solar tunnel dryer type Hohenheim third generation in drying pliek-u. The parameters observed were solar irradiation, temperature, relative humidity, and weight of pliek-u. The observations were conducted in interval of 1 hour during the drying process and it was done until the pliek-u were ready to press. The drying process was run intermittent only during the solar irradiation available. The dryer had used the proportional integral derivative (PID) controller for the outlet fans at setting point of 55°C. Results showed that the drying of pliek-u can be completed in 2 days (12hours). The average solar irradiation was 593-642 W/m2.  The average drying temperatures on the first day were 38.2-39.4°C, while the average drying temperatures on the second day were 39.2-42°C. The highest drying temperature observed was 46.3°C therefore the outlet fans were off during the drying process. However, the drying temperature of solar tunnel dryer was higher than that of the sun-drying about 5-8°C. In contrast, the relative humidity in the drying chamber was lower than that of sun-drying. The lowest moisture content of pliek-u was obtained at sample dried under sun-drying; it was about 5.23%. It can be explained as the use of aluminium container with high thermal conductivity and also the placement of the container directly above the concrete floor with high thermal absorption.  The acidity of pliek-u was 5.4 and the panellists prefer the pliek-u dried by using the dryer compared to one dried under sun-drying.Keywords:.Solar dryer type Hohenheim, Pliek-U, PID controller
Aplikasi Teknologi Near Infrared Reflectance Spectroscopy Dengan Metode Partial Least Square Untuk Prediksi Kadar Patchouli Alkohol Minyak Nilam Sry Afrita Fitia; Rita Khathir; Zulfahrizal Zulfahrizal
Jurnal Ilmiah Mahasiswa Pertanian Vol 6, No 4 (2021): November 2021
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.152 KB) | DOI: 10.17969/jimfp.v6i4.18127

Abstract

Abstrak. Minyak nilam merupakan salah satu jenis dari minyak atsiri yang dapat digunakan sebagai bahan baku dalam industri parfum, kosmetik serta untuk pengobatan. Minyak nilam mengandung patchouli alkohol yaitu penyusun utama yang digunakan sebagai indikator untuk mengetahui kualitas dari minyak nilam. Tujuan dari penelitian ini yaitu untuk mengkaji kemampuan teknologi near infrared reflectance spectroscopy (NIRS) dengan metode partial least square (PLS) dalam memprediksi kadar patchouli alkohol pada minyak nilam. Hasil penelitian menunjukkan bahwa PLS mampu memprediksi kadar patchouli alkohol dengan menghasilkan model yang tergolong good model performance. Peningkatan performa kinerja PLS terbaik diperoleh pada penggunaan pretreatment standart normal variate dengan nilai RPD 2,83 dengan karakteristik model nilai koefisien korelasi (r) sebesar 0,93, nilai koefisien determinasi (R2) 0,86 dan nilai error (RMSEC) sebesar 4,11.The Technology Application Near Infrared Reflectance Spectroscopy With Partial Least Square Method (PLS) To Prediction Patchouli Alcohol Content In Patchouli OilAbstract. Patchouli oil is one type of essential oil that is used as a raw material in the perfume, cosmetic and medical industry. Patchouli oil is categorized in with the main component of essential oil patchouli alcohol used as an indicator to determine the quality of patchouli oil. The purpose of this research is to assessing technological capabilities of near infrared reflectance spectroscopy (NIRS) with method partial least square (PLS) to predict patchouli alcohol content in patchouli oil. The results showed that PLS be able to predict patchouli alcohol levels  by producing a model that is classified as good model performance. The best improved performance in the pretreatment PLS performance was by using standard normal variate as pretreatment with RPD value about 2,83 correlation coefficient (r) 0.93, the coefficient of determination (R2) at 0.86, and (RMSEC) about 4.11
Karakteristik Pengeringan Biji Pala (Myristica fragranshoutt) Menggunakan Alat Pengering Hybrid dengan Sumber Panas Dari energi Surya dan Serbuk Kayu Debi Sarnadi; Raida Agustina; Rita Khathir
Jurnal Ilmiah Mahasiswa Pertanian Vol 3, No 4 (2018): November 2018
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.316 KB) | DOI: 10.17969/jimfp.v3i4.9571

Abstract

Abstrak. Manfaat dari proses pengeringan pala yaitu untuk tujuan pengawetan. Tujuan penelitian ini adalah untuk mengkaji proses pengeringan biji pala menggunakan alat pengering hybrid dengan sumber energi matahari dan biomassa serbuk kayu. Total biji pala yang dikeringkan adalah 15 kg. Pembakaran serbuk kayu dilakukan selama pengeringan di malam hari dengan laju 3kg/jam. Parameter penelitian meliputi iradiasi surya, temperatur, kelembaban relatif, kadar air, dan uji organoleptik terhadap warna dan aroma. Hasil penelitian menunjukkan bahwa iradiasi rata-rata yang diperoleh adalah 131,61 W/m2 pada hari pertama dan dihari kedua 131,08  W/m2. Temperatur dalam ruang pengering (44°C) lebih tinggi dibandingkan dengan temperatur lingkungan (33,5°C). Kelembaban relatif rata-rata ruang pengering (27,7%) lebih rendah dari kelembaban relatif rata-rata di lingkungan (42,7%). Untuk mencapai kadar air biji pala 10% dibutuhkan waktu 32 jam secara kontinu dengan alat pengering  dan 39 jam selama 4 hari secara intermitten dengan metode penjemuran. Kapasitas alat pengering 2x lebih besar dari kapasitas penjemuran, dan biji pala kering menggunakan alat pengering lebih disukai oleh panelis dari segi warna dan aromanya.Drying Characteristics of Nutmeg Seed (Myristica Fragranshoutt) by Using a Hybrid Dryer Used Heat Sources from Solar and Sawdust EnergyAbstract. The benefit of drying process of nutmeg seed is to prolong its life. The objective of the study was to observe the drying method of nutmeg seed by using a hybrid dryer used the heat sources from solar and biomass (sawdust) energy. The total nutmeg seed used in this study was approximately 15 kg. The combustion rate of biomass during the night was 3kg/h. The parameters investigated were solar irradiation, temperature, relative humidity, moisture content and organoleptic test on color and flavor. The results showed that the average solar irradiation was 131.61 W/m2 on the first and second day drying. The average temperature in the drying chamber (44°C) was higher than the average ambient temperature (33.5°C). The average relative humidity in the drying chamber (27.7%) was lower than the average ambient relative humidity (42.7%). To have the final moisture of nutmeg seed 10%, the drying time needed was 32 hours continuously by using hybrid dryer and 39 hours for 4 days intermittent by sundrying method.The dryer capacity was double of sundrying capacity, and the color and flavor of dried nutmeg seed produced by using hybrid dryer was preferred by respondents.Abstract. The benefit of drying process of nutmeg seed is to prolong its life. The objective of the study was to observe the drying method of nutmeg seed by using a hybrid dryer used the heat sources from solar and biomass (sawdust) energy. The total nutmeg seed used in this study was approximately 15 kg. The combustion rate of biomass during the night was 3kg/h. The parameters investigated were solar irradiation, temperature, relative humidity, moisture content and organoleptic test on color and flavor. The results showed that the average solar irradiation was 131.61 W/m2 on the first and second day drying. The average temperature in the drying chamber (44°C) was higher than the average ambient temperature (33.5°C). The average relative humidity in the drying chamber (27.7%) was lower than the average ambient relative humidity (42.7%). To have the final moisture of nutmeg seed 10%, the drying time needed was 32 hours continuously by using hybrid dryer and 39 hours for 4 days intermittent by sundrying method. The dryer capacity was double of sundrying capacity, and the color and flavor of dried nutmeg seed produced by using hybrid dryer was preferred by respondents.
Penyulingan Minyak Atsiri Sereh Dapur (Cymbopogon Citratus) Dengan Metode Penyulingan Air-Uap Zaituni Zaituni; Rita Khathir; Raida Agustina
Jurnal Ilmiah Mahasiswa Pertanian Vol 1, No 1 (2016): November 2016
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.632 KB) | DOI: 10.17969/jimfp.v1i1.1085

Abstract

Abstrak. Minyak atsiri sereh dapur diperoleh dari hasil penyulingan tanaman sereh dapur. Minyak sereh dapur merupakan sumber sitral yang merupakan konstituen utama dari minyak tersebut. Penelitian ini bertujuan untuk mengetahui mutu minyak atsiri yang dihasilkan dengan metode penyulingan air-uap (water and steam destillation). Bagian tanaman sereh dapur yang digunakan yaitu bagian batang dan daun yang disuling menggunakan alat penyulingan air dan uap.  Hasil penelitian menunjukkan bahwa rendemen minyak atsiri sereh dapur dari penyulingan bagian daun diperoleh sebesar 0,399 % 10 kali lipat lebih besar dari rendemen minyak atsiri sereh dapur pada bagian batang (0,039 %). Bobot jenis minyak atsiri sereh dapur pada daun 0,8987 dan pada batang 0,8940. Indeks bias minyak atsiri sereh dapur pada daun 1,4876 dan pada batang 1,4880. Kelarutan dalam alkohol 70% minyak atsiri sereh dapur dari daun dan batang mempunyai tingkat kelarutan keruh pada perbandingan 1:5. Berdasarkan rendemen dapat disimpulkan bahwa bagian yang lebih menguntungkan untuk disuling adalah daun. Berdasarkan parameter mutu yang dianalisis dapat disimpulkan bahwa minyak atsiri sereh dapur dari bagian batang dan daun sudah memenuhi standar Essential Oil Association (EOA).The Destillation of Lemongrass Essential Oil by Using the Water-steam Method Abstract. Lemongrass essential oil is obtained from the distillation of lemongrass plant. The main content of this oil is sitral content. This study aimed to determine the quality of essential oil produced by the method of water-steam destillation. The experiment was done by water-steam destillation of stalks and leaves of lemongrass, respectively, under 3 repeatations. Lemongrass essential oil obtained from leaves was 0,399%, which is 10-fold greater than the yield of the stalks (0,039%). The specific gravity of Lemongrass essential oil obtained from leaves was 0,8987 where as the specific gravity of Lemongrass essential oil obtained from stalks was 0.8940. The refractive index of lemongrass oil obtained from  leaves was 1.4876 while the refractive index of lemongrass oil obtained from stalks was 1.4880. Based on solubility in 70% alcohol test, lemongrass essential oil obtained from the leaves and stalks were a little bit cloud at a ratio of 1: 5. Based on its yield, it can be concluded that the leave plant produced more oil. However, the quality of both oils showed that lemongrass essential oil met the EAO Standard.
Kajian Mutu Kopi Arabika Gayo Dengan Perlakuan Variasi Suhu dan Lama Penyangraian Kaswindi Kaswindi; Bambang Sukarno Putra; Rita Khathir
Jurnal Ilmiah Mahasiswa Pertanian Vol 2, No 2 (2017): Mei 2017
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.73 KB) | DOI: 10.17969/jimfp.v2i2.3092

Abstract

Abstrak. Mutu kopi arabika gayo sangat tergantung pada proses penanganan pasca panen, terutama proses penyangraian. Tujuan penelitian ini untuk mengetahui pengaruh suhu dan lama penyangraian terhadap mutu kopi arabika gayo. Penelitian ini menggunakan biji kopi arabika gayo dari Desa Buntul Kemumu. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktorial dengan variasi suhu 160, 170 dan 180˚C dengan lama penyangraian  15, 20, dan 25 menit. Parameter penelitian meliputi rendemen, kadar air, keasaman (pH), kafein dan uji organoleptik terhadap warna, aroma dan rasa oleh 25 orang panelis. Data dianalisis menggunakan analisis sidik ragam (ANOVA) dengan uji lanjut Beda Nyata Jujur (BNJ) pada taraf 5%. Hasil penelitian ini menunjukan bahwa rendemen, kadar air, dan keasaman kopi arabika gayo dipengaruh secara nyata oleh suhu dan lama penyangraian. Rendemen tertinggi diperoleh pada suhu 160℃ dan lama penyangraian 15 menit yaitu 85,2%. Kadar air pada kopi arabika gayo memenuhi standar SNI yaitu maksimal 7%, kecuali pada perlakuan suhu 160˚C dan lama penyangraian 15 menit yaitu 7,14% . Keasaman (pH) tertinggi diperoleh pada suhu 160˚C lama penyangraian 15 menit yaitu 4,95. Kadar kafein kopi arabika gayo meningkat semakin tinggi suhu dan lama penyangraian. Berdasarkan uji organoleptik menunjukan bahwa kopi arabika gayo yang paling disukai panelis diperoleh suhu penyangraian 170 dan 180˚C dengan lama penyangraian 25 menit.Study of Arabica Gayo Coffee Quality under Temperature and Roasting Duration TreatmentsAbstract. The quality of gayo arabica coffee was affected by postharvest handling especially roasting process. This study aimed to find out the impact of temperature and roasting duration against the quality of gayo arabica coffee.The study was conducted by using Factorial Completely Randomized Design i.e. roasting temperature at 3 levels namely 160, 170 and 180℃, and roasting durations at 3 levels namely 15, 20, and 25 minutes. The coffee beans from Buntul Kemumu Village was evaluated in this study. Parameters analysed were yield, moisture content, acidity, caffeine content and 25 respondent perceptions on colour, aroma and taste. Data were analysed by using analysis of variance (ANOVA) and honestly significance difference at probability 5%. The results showed that the yield, moisture content, and acidity of gayo arabica coffee bean were influenced by temperature and roasting duration. The highest yield was obtained at treatment 160℃ temperature for 15 minutes roasting, i.e 85.2%. The mositure content of gayo arabica coffee beans followed the SNI qualification, i.e. 7%, unless at treatment 160℃ temperature for 15 minutes roasting, i.e. 7.14%. The highest acidity (pH) was obtained from treatment 160℃ temperature for 15 minutes roasting, i.e. 4.95. The caffeine content increased as temperature and roasting duration increased. Respondent perceptions showed that the best quality of gayo arabica coffee was obtained from treatment 170 and 180℃ temperature for 25 minutes roasting.
Kajian Parameter Pengeringan pada Alat Pengering Terowongan Energi Matahari Tipe Hohenheim Aceh Generasi Ketiga Ulfa Hardiyanti; Sri Hartuti; Rita Khathir
Jurnal Ilmiah Mahasiswa Pertanian Vol 7, No 2 (2022): Mei 2022
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.341 KB) | DOI: 10.17969/jimfp.v7i2.19897

Abstract

Abstrak. Pengeringan ialah salah satu proses pasca panen yang umum dilakukan pada berbagai produk pertanian. Tujuan penelitian ini adalah untuk menguji performansi alat pengering terowongan Energi matahari tipe Hohenheim Aceh generasi ketiga. Objek penelitian adalah alat pengering terowongan energi matahari tipe Hohenheim Aceh generasi ketiga dan diuji tanpa beban (uji kosong), sedangkan alat yang digunakan adalah HTC-meter, anemometer, pyranometer, dan perlengkapan pendukung lainnya. Hasil penelitian menunjukkan bahwa selama proses pengeringan terjadi fluktuasi iradiasi surya, di mana rata-rata iradiasi surya selama proses pengeringan adalah 649 W/m2. Adapun rata-rata suhu di dalam ruang pengering adalah 40,6°C sedangkan rata-rata suhu di lingkungan adalah 32,9°C. Kondisi di dalam ruang pengering sangat memenuhi syarat pengeringan karena suhu yang lebih tinggi daripada suhu lingkungan. Adapun RH rata-rata dalam ruang pengering adalah 36% dan RH rata-rata di lingkungan adalah 40%, di mana hubungan suhu dan RH adalah negatif kuat yang menunjukkan bahwa kondisi alat sangat bagus untuk proses pengeringan dengan nilai R2 sebesar 51,13%. Hubungan iradiasi surya dan suhu adalah positif kuat menunjukkan bahwa sumber energi alat pengering ini adalah ketersediaan iradiasi surya dengan nilai R2 sebesar 84,05%. Adapun aliran udara dalam ruang pengering sangat rendah sehingga tidak terdeteksi dengan alat ukur, di mana alat ini mempunyai 2 kipas inlet dan 2 kipas outlet kapasitas 12Volt 0,2A DC dengan diameter 12cm. Kecepatan aliran udara di depan kipas inlet (2,2-2,4m/s) lebih besar daripada kecepatan aliran udara di depan kipas outlet (1,9m/s), hal ini disebabkan oleh pengaruh aliran udara alamiah yang searah dengan aliran udara kipas inlet. Perlu dilakukan penelitian lebih lanjut dengan melakukan modifikasi penambahan jumlah, ukuran, dan letak kipas pada alat pengering.Study of Drying Parameters in Solar Tunnel Dryer Type Hohenheim Aceh Third GenerationAbstract. Drying is one of the most common post-harvest processes for various agricultural products. The purpose of this study was to test the performance of the third generation Hohenheim Aceh type solar tunnel dryer. The object of the research was the third generation Hohenheim Aceh type solar tunnel dryer and was tested without load (empty test), while the tools used were HTC-meter, anemometer , pyranometer, and other supporting equipment. The results showed that during the drying process solar irradiation fluctuations occurred, where the average solar irradiation during the drying process was 649 W/m2. The average temperature in the drying chamber is 40.6°C while the average temperature in the environment is 32.9°C. Conditions in the drying chamber are very suitable for drying because the temperature is higher than the ambient temperature. The average RH in the drying chamber is 36% and the average RH in the environment is 40%, where the relationship between temperature and RH is a strong negative which indicates that the condition of the equipment is very good for the drying process with an R2 value of 51.13%. The relationship between solar irradiation and temperature is strong positive indicating that the energy source for this dryer is the availability of solar irradiation with an R2 value of 84.05%. The air flow in the drying chamber is so low that it cannot be detected by measuring instruments, where this tool has 2 inlet fans and 2 outlet fans with a capacity of 12Volt 0.2A DC with a diameter of 12cm. The speed of air flow in front of the inlet fan (2.2-2.4m/s) is greater than the speed of air flow in front of the outlet fan (1.9m/s), this is due to the effect of natural airflow in the direction of the fan airflow. inlets. Further research needs to be done by modifying the addition of the number, size, and location of the fan on the dryer. 
Co-Authors Agus Arip Munawar Ahlillah Ahlillah Anak Agung Gede Sugianthara Antoni Hardi Asmaul Husna Azmil Azmil Bambang Sukarno Putra Bambang Sukarno Putra Bambang Sukarno Putra Bambang Sukarno Putra Bunga Mentari Debi Sarnadi Diswandi Nurba Eka Pratika Sari Hasmayani Hasmayani Hendri Syah Hendri Syah Heny Mahrani Rizkiyah Siregar Ichwana Ichwana Juanda Juanda Kaswindi Kaswindi Kiman Siregar Kiman Siregar Marai Rahmawati Marai Rahmawati Muhammad Pari Zahari Muhammad Yanis Alkindy Mustafril Mustafril Mustaqimah Mustaqimah Mutia Fikarauza Nadiatul Hikmah Nana Mardiana Raida Agustina Raida Agustina Raida Agustina Raida Agustina Raida Agustina Rama Niza Putri Ratna Ratna Ratna Ratna Ridwan Ridwan Riska Jannati Rizkia Marisa Safira Elviana Safrizal Safrizal Sarmedi Sarmedi Sri Hartuti Sri Hartuti Sri Hartuti Sri Hartuti sri hartuti Sry Afrita Fitia Teguh Pribadi Gunawan Ulfa Hardiyanti Ulfa Hardiyanti Yanda Putri Aulia Yunita Yunita Yunita Yunita Yunita Yunita Zaitun Zaitun Zulfahrizal Zulfahrizal