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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Dan Industri Pangan Buletin Udayana Mengabdi Prosiding Seminar Nasional MIPA Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian Jurnal Penelitian Tanaman Industri Jurnal Tanaman Industri dan Penyegar Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Jurnal Online Mahasiswa (JOM) Bidang Pertanian agriTECH Widyariset Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Pendidikan Ilmu Sosial Warta IHP (Warta Industri Hasil Pertanian) BULETIN FISIKA Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Ecolab Harmony : Jurnal Pembelajaran IPS dan PKN International Journal of Engineering and Emerging Technology Jurnal Penelitian Tanaman Industri (Littri) Widyariset Jurnal Pusat Inovasi Masyarakat (JPIM)

I Wayan Budiastra

Departemen Teknik Mesin Dan Biosistem, IPB University

Author-ID : 244141

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Social Sciences Other

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Pelapisan Lilin Karnauba dan Kitosan untuk Mempertahankan Mutu Wortel Kupas Trisma Rezeki Zairisman; I Wayan Budiastra; Sugiyono Sugiyono
Jurnal Keteknikan Pertanian Vol. 5 No. 2 (2017): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractCarrot is one kind of vegetables that is highly consumed in Indonesia and foreign countries. Carrots are usually marketed in the form of unpeeled carrots, but now the demand of peeled carrots or minimally processed carrots increases significantly, especially for export. Unfortunately, the peeled carrot usually is more perishable than unpeeled carrots. Therefore, postharvest technology to maintain the quality of peeled carrot is required, one of them is wax coating technology. The aim of this research was to determine the best treatment of coating and storage temperature to maintain quality of peeled carrot during cold storage. Three kinds of storage temperatures (5, 10, 15 °C) and three kinds of coating (carnauba wax, chitosan, carnauba wax+chitosan) were applied in this research. The change of quality of peeled carrot during storage such as moisture content, weight loss, respiration rate, total plate count, color and organoleptic test was investigated. The results showed that the storage temperature significantly influenced the quality parameters analyzed. Coating did not significant affect the quality parameters of peeled carrot. The temperature of 5 °C suppress damage of peeled carrots during storage compared to other temperatures. Chitosan coating combined with storage temperature of 5 °C is the best postharverst treatment for pelled carrot, with the shelf-life of 9 days. AbstrakWortel merupakan salah satu sayuran yang cukup banyak dikonsumsi oleh konsumen dalam dan luar negeri. Biasanya wortel dipasarkan dalam bentuk wortel tanpa kupas, namun saat ini permintaan wortel kupas atau wortel terolah minimal semakin besar khususnya dari Singapura. Wortel dalam keadaan terolah minimal lebih cepat busuk dibandingkan dengan wortel tanpa kupas, sehingga diperlukan teknologi pascapanen untuk mempertahankan mutu dari wortel kupas, salah satunya dengan pelapisan lilin. Penelitian ini bertujuan untuk menentukan jenis pelilinan dan suhu penyimpanan dingin terbaik untuk mempertahankan mutu wortel kupas. Penelitian ini menggunakan 3 jenis suhu (5, 10, 15oC) dan 3 jenis pelapisan (lilin karnauba, kitosan dan kombinasi). Parameter mutu yang dianalisis adalah kadar air, susut bobot, laju respirasi, total mikroba, warna dan uji organoleptik. Hasil penelitian menunjukkan bahwa suhu penyimpanan berpengaruh signifikan terhadap parameter mutu yang dianalisis. Pelapisan tidak berpengaruh signifikan terhadap parameter mutu wortel kupas. Suhu 5oC dapat menghambat kerusakan wortel kupas selama penyimpanan dibandingkan dengan suhu lainnya. Pelapisan dengan kitosan dan suhu penyimpanan 5oC adalah perlakuan terbaik untuk wortel kupas dengan umur simpan 9 hari.

Aplikasi Gelombang Ultrasonik untuk Meningkatkan Rendemen Ekstraksi dan Efektivitas Antioksi dan Kulit Manggis Mar'atus Sholihah; Usman Ahmad; I Wayan Budiastra
Jurnal Keteknikan Pertanian Vol. 5 No. 2 (2017): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractMaceration is one of the common extraction methods used to obtain antioxidant of mangosteen rind. However, this method time consuming and produce low extraction yield. Therefore, it needs other methods. One of them is ultrasonic-assisted extraction (UAE). The aim of the research is to observe the effect of UAE method on the increasing of extraction yield and the effectiveness of antioxidant from mangosteen rind. Three level of excitation time (15, 30, 45 minutes) and amplitude of ultrasonic wave (35, 50, 65%) were tested on UAE. As the control was maceration method at 35 oC for 7 hours. The result showed that extraction yield, antioxidant activity (IC50) and total anthocyanin content (TAC) of all ultrasonic treatments were significantly different from that of control. The optimum condition of UAE was obtained from amplitude of 65% and excitation time of 45 minutes resulting 6.71% of extraction yield, IC50 4.93 ppm and TAC 558.76 ppm. UAE can enhance the effectiveness antioxidant and reduce extraction time from mangosteen rind. AbstrakMaserasi adalah salah satu metode ekstraksi yang umum digunakan untuk mendapatkan antioksidan kulit manggis. Metode ini membutuhkan waktu yang cukup lama dan menghasilkan rendemen yang rendah. Oleh karena itu, diperlukan metode ekstraksi yang lebih cepat salah satunya dengan ultrasonic-assisted extraction (UAE). UAE adalah metode ekstraksi menggunakan bantuan ultrasonik. Tujuan dari penelitian ini adalah mengkaji pengaruh metode ultrasonik untuk peningkatan rendemen dan efektivitas antioksidan dari kulit manggis. Tiga level waktu eksitasi (15, 30, 45 menit) dan amplitudo (35, 50, 65%) diuji pada ekstraksi berbantu ultrasonik. Maserasi pada suhu 35oC selama 7 jam digunakan sebagai kontrol. Hasil penelitian menunjukkan bahwa rendemen, aktivitas antioksidan (IC50) dan kadar antosianin total (TAC) dari ekstraksi berbantu ultrasonik berbeda nyata terhadap kontrol. Kombinasi perlakuan terbaik dari ekstraksi berbantu ultrasonik adalah menggunakan amplitudo 65% dan waktu eksitasi 45 menit yang menghasilkan rendemen 6.71%, aktivitas antioksidan IC50 4.93 ppm dan kadar antosianin total 558.76 ppm. Ekstraksi berbantu ultrasonik mampu meningkat rendemen, efektivitas antioksidan dan mengurangi waktu ekstraksi kulit manggis.

Prediksi Tanin dan Total Padatan Tidak Terlarut Buah Kesemek (Diospyros kaki L.) Menggunakan Spektroskopi NIR Indah Kurniasari; Yohanes Aris Purwanto; I Wayan Budiastra; Sobir Ridwani
Jurnal Keteknikan Pertanian Vol. 5 No. 3 (2017): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractDetermination of tannin and non-soluble solid content of persimmon are usually carried out by a chemical method, these methods are destructive, time-consuming and can not be applied to the development of online grading. The objective of this study was to develop rapid prediction method of tannin and non-soluble solid content of persimmon non-destructively using NIR Spectroscopy. NIR spectra were measured by NIRFlex N-500 fiber optic solid with the wavelength of 1000-2500 nm. For the reference method, tannin and non-soluble solid content were measured using conventional method. Some pre-processing methods were applied, and the results were calibrated to chemical data using principal component regression (PCR) and partial least square (PLS). The best model for prediction of non-soluble solid content was multiplicative scatter correction (MSC) pre-processing and PLS with a correlation coefficient (r), standard error prediction (SEP) and the ratio of standard deviation to SEP (RPD) of 0.83, 1.48% and 1.59 respectively. The best model for predicting tannin was first derivative Savitzky-Golay (dg1) and PLS with r, SEP and RPD of 0.72, 0.14% and 1.06 respectively. PLS method was better than PCR in predicting non-soluble solid content and tannin of persimmon. AbstrakPenentuan tanin dan total padatan tidak terlarut buah kesemek biasa dilakukan dengan metode kimia, metode ini bersifat destruktif, memakan waktu dan tidak dapat diterapkan untuk pengembangan grading secara on-line. Tujuan penelitian ini adalah untuk memprediksi secara cepat tanin dan padatan tidak terlarut buah kesemek secara non destruktif menggunakan Spektroskopi NIR. Spektrum NIR diukur dengan NIRFlex N-500 fiber optic solid pada panjang gelombang 1000-2500 nm, Untuk metode referensi, kandungan tannin dan total padatan tidak terlarut diukur dengan menggunakan metode konvensional. Beberapa metode pra-pengolahan data NIR diterapkan, dan hasilnya dikalibrasi dengan data kimia menggunakan metode principal component regression (PCR) dan partial least square (PLS). Model terbaik untuk memprediksi non-soluble solid content adalah menggunakan pra-pengolahan multiplicative scatter correction (MSC) dan PLS dengan r, SEP dan RPD masing - masing 0.83, 1.48%, dan 1.59. Model terbaik untuk memprediksi tanin diperoleh dengan menggunakan turunan pertama Savitzky-Golay (dg1) dan metode PLS dengan r, SEP dan RPD masing - masing 0.72, 0.14% dan 1.06. Metode PLS menghasilkan model kalibrasi lebih baik daripada PCR dalam memprediksi tanin dan non-soluble solid content buah kesemek.

Peningkatan Efektivitas Ekstraksi Oleoresin Pala Menggunakan Metode Ultrasonik Baihaqi Baihaqi; I Wayan Budiastra; Sedarnawati Yasni; Emmy Darmawati
Jurnal Keteknikan Pertanian Vol. 6 No. 3 (2018): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractApplication of ultrasonic-assisted extraction (UAE) is widely used to extract active compounds of certain product due to its lower energy consumption and shorter operating times than conventional method. However, proper configuration of UAE in improving extraction efficiency in spices, particularly nutmeg, remains unknown. Therefore, the aim of this research is to study the effect of particle size and amplitudes of UAE on the oleoresin extraction effectiveness in nutmeg. Experiments were carried out under the following conditions: the mass ratio of dry meat nutmeg to solvent of 1:5, therespective particle size of the material 20, 40, and 60 mesh and the ultrasonic amplitudo were 20 and 40% with extraction time 30 minutes. Maceration method at 350C for 7 hour was used as control. The result shows that particle size had a significant effect on yield of oleoresin, while the amplitude had no effect. The best UAE configuration based on the highest yield (31.33%) was held on 60 mesh by amplitude of 40%. The application of UAE can improve oleoresin extraction efficiency in nutmeg by increasing yield and shorten extraction time.AbstrakAplikasi ekstraksi berbantukan ultrasonik (UAE) banyak digunakan untuk mengekstrak senyawa aktifproduk tertentu karena konsumsi energinya lebih rendah dan waktu operasi yang lebih singkat dari pada metode konvensional. Namun, konfigurasi yang tepat dari UAE dalam meningkatkan efektivitas ekstraksidalam rempah-rempah, terutama pala, belum diketahui. Oleh karena itu, tujuan dari penelitian ini adalah untuk mempelajari pengaruh ukuran partikel dan amplitudo UAE terhadap efektivitas ekstraksi oleoresin pada pala. Penelitian dilakukan dengan kondisi sebagai berikut: rasio bahan dan pelarut yaitu 1:5, ukuranbahan 20, 40, dan 60 mesh dan amplitudo ultrasonik adalah 20% dan 40% dengan waktu ekstraksi 30 menit. Metoda Maserasi pada suhu 350C selama 7 jam digunakan sebagai kontrol. Hasil penelitian menunjukkan bahwa ukuran partikel berpengaruh nyata terhadap hasil oleoresin, sedangkan amplitudo tidak berpengaruh. Konfigurasi UAE terbaik berdasarkan hasil tertinggi (31.33%) dilakukan pada 60 mesh dengan amplitudo 40%. Penerapan UAE dapat meningkatkan efisiensi ekstraksi oleoresin pada pala dengan meningkatkan rendemen dan mempersingkat waktu ekstraksi.

Modifikasi Instrumen NIR untuk Penentuan Kandungan Kimia Bahan Organik secara Cepat dan Non Destruktif Rizky Wiradinata; I Wayan Budiastra; Slamet Widodo
Jurnal Keteknikan Pertanian Vol. 7 No. 1 (2019): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractNIRS has been successfully applied to determine chemical content of various materials. However, the commercial NIR instrument can not measure many samples in one measurement time so the faster measurement can not be realized. The purpose of this research are (1) to modify NIR instrument designedby Budiastra et al. (1998) so it can be used to measure absorbance of some samples in one measurement time, and (2) to test the performance of the modified NIR instrument in measuring the absorbance of coffee. The modified NIR instrument consists of optical unit, electronic unit and mechanical unit (auto-sample holder). A new mechanical unit (auto-sample holder) has been developed to measure reflectance of some samples automatically. The performance of modified NIR instrument was evaluated by its consistency, delay time, detect ability for different water content and compared to other NIR instrument. The consistency of instrument is high with the percentage of homogeneity of 98.65%. The optimal delay of measurement is 200 ms. The modified NIR instrument is able to measure the different water content of coffee. The modified NIR instrument have same pattern of absorbance characteristic and higher than other NIR instrument, since the modified NIR instrument used integrating sphere and a large amplifier signal amplification.AbstrakNIRS telah berhasil dimanfaatkan untuk menentukan kandungan kimia berbagai macam bahan. Namun, instrumen NIR komersial tidak dapat mengukur banyak sampel dalam satu waktu pengukuran, sehingga pengukuran dengan waktu yang lebih cepat tidak tercapai. Tujuan dari penelitian ini adalah (1) memodifikasi instrumen NIR hasil desain Budiastra et al. (1998) supaya dapat digunakan untuk mengukur beberapa sampel dalam satu waktu pengukuran dan (2) menguji kinerja instrumen NIR hasil modifikasi untuk mengukur absorbansi dari biji kopi. Instrumen NIR hasil modifikasi terdiri dari unit optik, unit elektronikdan unit mekanis (auto-sample holder). Unit mekanis (auto-sample holder) dibuat untuk mengukur reflektan beberapa sampel secara otomatis. Kinerja instrumen NIR hasil modifikasi dievaluasi berdasarkan konsistensi, waktu delay, kemampuan mendeteksi perbedaan kadar air dan perbandingan dengan alat NIR lain. Konsistensi hasil pengukuran instrumen NIR menunjukkan nilai yang tinggi dengan persentase kehomogenan sebesar 98.65%. Delay optimal pengukuran sebesar 200 ms. Instrumen NIR hasil modifikasi mampu mengukur kadar air biji kopi yang berbeda. Instrumen NIR hasil modifikasi mempunyai polakarakteristik absorbansi yang sama dan lebih tinggi daripada instrumen NIR lain, dikarenakan instrumen NIR menggunakan integrating sphere dan penguatan sinyal amplifier yang besar.

Pengaruh Amplitudo Ultrasonik dan Waktu Ekstraksi Terhadap Rendemen dan Mutu Oleoresin Pala I Wayan Budiastra; Sutrisno Suro Mardjan; Ahmuhardi Abdul Azis
Jurnal Keteknikan Pertanian Vol. 8 No. 2 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.2.45-52

Nutmeg oleoresin is one of the nutmeg derivative products with high values produced from the extraction process. The conventional extraction process using maceration takes a long time so that it is less suitable for industries needs. This study aims to examine the UAE direct sonication method for increasing yield and quality of nutmeg eleoresin. Nutmeg with optimal maturity level were harvested, dried and milled into 60 mesh particle size. Nutmeg powder of 200 g was placed in beaker glass filled with etanol 800 ml (material and solvent ratio 1:4) and UAE was carried out using a sonicator with a frequency of 20 kHz and power of 700 W. Four ultrasound amplitude levels (45, 60, 75, 90%) and four levels of extraction time (30, 45, 60, 75 minutes) were taken as UAE treatments. Extraction using maceration at room temperature for 7 hours was done as control. The results showed that the greater the amplitude of the ultrasound, the higher the yield of nutmeg oleoresin. The longer the extraction time, the higher the yield of nutmeg oleoresin. Ultrasonic assisted extraction can increase nutmeg oleoresin yield by 11 to 52% and faster time (<= 1,25 hour) than maceration extraction method (7 hours).

Studi Model Kinetika Ekstraksi Berbantu Ultrasonik pada Lada (Piper nigrum L.) Anggie Yulia Sari; I Wayan Budiastra; Slamet Widodo
Jurnal Keteknikan Pertanian Vol. 9 No. 3 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.3.127-134

Ultrasonic Assisted Extraction (UAE) is used to extract oleoresin from pepper that offer a competitive method compared to maceration. This research was aimed to study and to validate a second order of kinetics model of UAE white pepper extraction that can describe the relationship between oleoresin yield, UAE amplitude, and extraction time. Pepper is milled to particle size of 100 mesh. Then the 200 g of powder of pepper is poured to ethanol of 800 ml (1:4) to subjected to UAE extraction. A maceration process is also carried out as control. Amplitude and extraction times used in the UAE extraction are 45, 60, 75, and 90%; and 45, 60, 75, and 90 minutes. The value of white pepper oleoresin concentration experiment (Ct) with model calculations is closely related to the extraction capacity at saturation (Cs) and the resulting extraction rate constant (k). The value of Cs between 29,24–34,48 g/l and the value of k between l/g.minute. The results from the two Ct obtained produce a correlation coefficient value of 0.85 and the error value between 0,18–14,09 %. The second-order kinetic model developed can be used to predict the yield of UAE-assisted white pepper oleoresin with UAE amplitude limit conditions of 45–90 % and extraction time of 45–90 minutes.

RE-VEGETASI TANAH VULKANIS TANDUS DENGAN AIR SUMUR I Nengah Simpen; I Nyoman Sutarpa Sutama; I Wayan Redana; Siti Zulaikah
Prosiding Seminar Nasional MIPA 2015: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2015
Publisher : Prosiding Seminar Nasional MIPA

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

Abstrak. Tanah vulkanis merupakan suatu perlapisan tanah yang terbentuk oleh hamparan material letusan gunung berapi saat meletus. Tanah vulkanis biasanya tandus. Perlu waktu yang lama bertahun-tahun dan bahkan sampai berpuluh-puluh tahun untuk menumbuhkan kembali vegetasi (re-vegetasi) di daerah ini. Untuk itu perlu dicari suatu cara agar pada tanah yang semula tandus dapat sesegera mungkin ditumbuhi tanam-tanaman, sehingga tanah vulkanis menjadi produktif. Melihat kondisinya yang seperti ini dapatlah dianalisa bahwa masalah utama pada daerah tersebut adalah air dan cara mengelolanya. Di sini diberikan salah satu contoh untuk mencari air pada daerah tanah vulkanis tandus yaitu dengan Metoda Geolistrik. Dari hasil yang didapat bahwa walaupun bagian atasnya berupa tanah vulkanik tandus, namun di bawahnya masih terpendam akuifer-akuifer yang dapat disadap airnya. Setelah airnya didapat, airnya mestinya dikelola sehngga dapat dipakai oleh hewan maupun tumbuhan. Simbiosis antara hewan dan tumbuhan dapat mempercepat proses re-vegetasi pada daerah vulkanis tandus. Sebagai hasil studi, dapat dilihat pada beberapa daerah di Kabupaten Karangasem Bali.Kata kunci: Re-vegetasi, Tanah vulkanis tandus, Metoda Geolistrik, Air sumur

MODEL PENDUGAAN KANDUNGAN AIR, LEMAK DAN ASAM LEMAK BEBAS PADA TIGA PROVENAN BIJI JARAK PAGAR (Jatropha curcas L.) MENGGUNAKAN SPEKTROSKOPI INFRAMERAH DEKAT DENGAN METODE PARTIAL LEAST SQUARE (PLS) LADY C. E. CH. LENGKEY; I WAYAN BUDIASTRA; KUDANG B. SEMINAR; BAMBANG S. PURWOKO
Jurnal Penelitian Tanaman Industri Vol 19, No 4 (2013): Desember 2013
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v19n4.2013.203-211

ABSTRAKJarak pagar berpotensi sebagai sumber biodiesel karena kandunganlemak yang tinggi (>40%) dan belum ada penggunaan lainnya.Spektroskopi (Near Infrared) NIR adalah metode yang cepat untukmengukur spektrum sampel dan tidak terdapat limbah kimia. Tujuanpenelitian adalah mengembangkan metode pendugaan komposisi kimiabeberapa provenan jarak pagar berdasarkan spektroskopi NIRmenggunakan kalibrasi PLS. Pengujian dilakukan menggunakan tigaprovenan jarak pagar yaitu IP-3A, IP-3M, dan IP-3P masing-masing 85sampel. Spektrum reflektansi diukur menggunakan alat NIRFlex SolidsPetri pada panjang gelombang 1000–2500 nm. Sekitar ⅔ jumlah sampeldigunakan untuk mengembangkan persamaan kalibrasi dan ⅓ jumlahsampel untuk validasi. Pra perlakuan data spektrum dilakukan dengannormalisasi antara 0-1, turunan pertama Savitzky-Golay 9 titik dangabungan keduanya. Hasil penelitian menunjukkan spektroskopi NIRdapat menduga kadar air, lemak, dan asam lemak bebas . Koefisienkorelasi (r) antara komponen kimia metode acuan dengan dugaan NIR>0,83 menunjukkan ketepatan model cukup baik (r kadar air=0,96, r kadarlemak=0,92, dan r ALB=0,89 ). Konsistensi model kalibrasi kadarair=94,85%, lemak=82,56%, dan ALB=87,80%. Koefisien keragamandugaan (Prediction Coeficient Variability/PCV) ketiga model <10%menunjukkan model yang dibangun cukup handal. Ratio of standard errorprediction to deviation (RPD) menunjukkan metode spektroskopi NIRdapat digunakan untuk menentukan kadar air (RPD=3,30) dan lemak(RPD=2,06). Model-model yang dikembangkan secara umum layakuntuk menentukan kadar air dan lemak biji jarak pagar, tetapi belumoptimal untuk penentuan kadar ALB biji jarak pagar.Kata kunci: NIR , jarak pagar, kadar air, kadar lemak, kadar asam lemakbebasABSTRACTPhysic nut is a potential source of biodiesel. It is high in fat content,above 40% and has not been usesed for other purposes. Moisture, free fattyacid, and fat content are the chemical compounds and determinant factorfor physic nut seed quality. The objective of this study was to develop amethod to predict chemical composition of physic nut by NIRspectroscopy and PLS calibration. The study was conducted using threeprovenances of physic nut, i.e. IP-3A, IP-3M, and IP-3P, with 85 sampleseach. The wavelengths of near infrared reflectance ranged from 1000 to2500 nm, and measured by NIR Flex Solids Petri Apparatus.Approximately ⅔ of total samples were used for developing calibrationequation, while ⅓ of total samples for performing validation. Pre-treatmentof spectrum data was done by applying normalization, first derivative ofSavitzky–Golay 9 points, and as well as their combination. The resultsshowed that NIR spectroscopy performed acceptable prediction formoisture and fat content. Correlation coefficients (r) between the referencemethod and NIR prediction were 0.96 for moisture content, 0.92 for fatcontent, and 0.89 for FFA and the consistency of the model were 94.85%for moisture content, 82.56% for fat, and 87.80% for FFA. Prediction ofcoefficient of variability (PCV) of the three models ≤10 % shows that themodels are reliable. Ratio of standard error prediction to deviation (RPD)for moisture content has the potential to be used for screening (RPD=3.30)though the fat content model has rough screening (RPD=2.06).Key words: NIR, physic nut, moisture, fat, free fatty acid contents.

DRILLING GROUNDWATER FOR RAW WATER IN SEMBIRAN VILLAGE,TEJAKULA DISTRICTS, BULELENG REGENCY Ketut Agus Karmadi; I Wayan Redana; I Nengah Simpen; Mawiti Infantri; Bambang Soenarto
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p14

ABSTRACT- Water is an absolute necessity that must be met, both for drinking water and for irrigation. An alternative to meet the water needs other than rainwater or surface water, is by taking underground water by drilling deep wells. Sembiran Village is a village located in Tejakula District, Buleleng Regency, the village is a dry area that requires water, both for drinking water and for agriculture. Location of groundwater drilling including Tejakula groundwater basin. In order to achieve the above objectives, an effective and efficient groundwater drilling technique should be carried out considering that the area geologically has rocks dominated by volcanic lava rock which are the products of Mount Agung and Mount Buyan Beratan Purba. The method of drilling groundwater is carried out in stages starting from drilling a Pilot Hole with a diameter of 6 to 64 meters, followed by an enlargement of 8 ", 10" to 12 "drill holes to a depth of 64 meters. In the field of drilling work the Hydrolic Rotary System Method, Direct Circulation Rotary Drilling is used and for the removal of cutting / dirt mud Fludia is used. The equipment used for drilling is rotary / skid mounted drilling machines with a capacity of up to ± 150.0-200.0 meters, equipped with equipment such as: mud pumps, a series of equipment that cannot be separated from one another. For well logging an Electrical logger is used for geophysical wellbore investigations. For the work of washing wells using compressor and other supporting equipment. Pumping the test uses a submersible pump that has a minimum discharge capability of 10 lt / sec and a maximum of 20 lt / sec. The results of direct observations and measurements of the physical parameters of the Sembiran Village Drilling Well (SEM-5) contain TDS = 219.; PH = 7.0. Chemically, Iron (Fe) = 0.001 mg/ltr; Arsenic (Ar) = 0.067 mg/ltr; Availability (CACO3) = 56.4 mg/ltr; Chloride (Cl-) = 91.6 mg/ltr; Nitrate (N) = 0.013 mg/ltr; Sulfate (SiO4) = 1.88 mg); Lead (Pb) = 0 mg/ltr; organic matter (KMnO4) = 0.34 mg/ltr, so the Drilling wells (SEM-5) meet clean water quality standards based on the Regulation of the Minister of Health of the Republic of Indonesia Number 492 / Menkes / Per / IV / 2010. Discharge obtained from pumping test results at SEM-5 wells is 20.47 liters/sec with surface water level(swl) = 23.60 m, and the position of the pump is placed at 42 m from the ground surface.

Co-Authors . Saputera . Sutrisno A. Trisnobudi Agus A Munawar Ahmuhardi Abdul Azis Alla Asmara Amin Rejo Amoranto Trisnobudi Anggie Yulia Sari Aris Purwanto Aryanis Mutia Zahra Baihaqi Baihaqi Bambang Haryanto Bambang Haryanto Bambang Haryanto Bambang Haryanto BAMBANG S. PURWOKO Bambang S. Purwoko Bambang Soenarto Baskoro Wicaksono, Baskoro Deva Primadia Dheni Mita Mala Dwi Dian Novita Ei Mon Kyaw Elizabeth Sonya Lumbantoruan Emmy Darmawati Fadfhillah, Dini Nur Fadhillah, Dini Nur Fila Rodotul Jannah Fiona Hanberia Innayah Hadi K. Purwadaria Hadi K. Purwadaria Hadi K. Purwadaria Hafiz Fajrin Aditama Harmi Andrianyta Herna Permata Sari I Kadek Suardika I M. S. Wibawa I NYOMAN SUTARPA SUTAMA I Wayan Redana Ida Bagus Made Suryatika Indah Kurniasari Irawaty Irawaty Jajang Juansah Jajang Juansah Jati Sumarto Putro Jeris Habfrons Wiatri Djereng Ketut Agus Karmadi KUDANG B. SEMINAR La Rianda LADY C. E. CH. LENGKEY Lady Lengkey Lalu Hendri Setiawan Mar'atus Sholihah Mawiti Infantri Mawiti Infantri Yekti Ni Nyoman, Ratini Noneng Fahri Novi Andareswari Noviar Harun Nur Arifiya Ocarina, Estika Parida, Desca Putu Doddy Heka Ardana Rini Rosita Rizal Syarief Rizky Wiradinata Rokhani Hasbullah Ruri Wijayanti Samsudin Samsudin SEDARNAWATI YASNI Semin Semin Sigid Hariyadi Siti Djamila Siti Zulaikah Slamet Susanto Slamet Widodo Slamet Widodo Sobir Sobir Sri Agustina Sri Citra Yuliana Madi Sugiyono . Sugiyono Sugiyono Sukrisno Widyotomo Suroso . Suroso . Suroso Suroso Sut risno Sutrisno - Sutrisno . Sutrisno Mardjan Sutrisno Sutrisno Tarisa Fadillah Titis Priyowidodo Trisma Rezeki Zairisman Usman Ahmad Vita N. Lawalata Wayan Gede Suharta Wendianing Putri Luketsi Wiranda G. Piliang Yasin, Yasnita Yul Y Nazaruddin Yunisa Tri Suci

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