Article Per Year (5 Year)
p-Index From 2021 - 2026
2.076
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Pertanian Indonesia Bionatura Jurnal Keteknikan Pertanian Jurnal Sains dan Teknologi Jurnal Ilmiah Kursor Jurnal Penelitian Pascapanen Pertanian Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Teknologi Pertanian agriTECH Jurnal Penelitian Pertanian Terapan Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Jurnal Teknologi & Industri Hasil Pertanian Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) TEKTAN Jurnal Agricultural Biosystem Engineering Aceh International Journal of Science and Technology
Diding Suhandy
Jurusan Teknik Pertanian, Fakultas Pertanian, Universitas Lampung, Jl. Prof. Dr. Soemantri Brojonegoro No. 1, Bandar Lampung 35145
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Other

Published : 44 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 44 Documents
Search

 1   2   3   4   5 
PENGGUNAAN METODE SOFT INDEPENDENT MODELLING OF CLASS ANALOGY DAN UV-VIS SPECTROSCOPY UNTUK MEMBEDAKAN KOPI BUBUK ROBUSTA ASAL JAWA DAN SUMATERA SECARA CEPAT Diding Suhandy
Jurnal Penelitian Pertanian Terapan Vol 18 No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v18i2.760

Abstract

Penelitian ini merupakan aplikasi penggunaan metode UV-VIS spectroscopy dan SIMCA untuk membedakan kopi bubuk robusta asal Sumatera dan Jawa. Pengambilan spektra sampel larutan kopi yang sudah disaring dan diencerkan, dilakukan dengan menggunakan UV-VIS spectrometer (Genesys™ 10S UV-Vis, Thermo Scientific, USA). Model SIMCA dibangun untuk masing-masing kelas yaitu model SIMCA kopi robusta Sumatera dan model SIMCA kopi robusta Jawa. Hasil prediksi menunjukkan bahwa seluruh sampel prediksi berhasil dikelompokkan secara benar sesuai dengan kelasnya masing-masing menggunakan model SIMCA yang dibangun, kecuali sampel S14aPA yang gagal dikelompokkan sebagai kopi robusta Sumatera. Berdasarkan hasil analisis plot discriminant power diperoleh kesimpulan bahwa secara umum kontribusi panjang gelombang antara 200–350 nm lebih tinggi dibandingkan dengan panjang gelombang 350–600 nm. Beberapa panjang gelombang dengan kontribusi sangat tinggi (nilai discriminant power tinggi) dan terlihat sebagai puncak pada plot adalah 245 nm, 253 nm, 264 nm, 316 nm dan 327 nm. 
Dekafeinasi Menggunakan Metode Ultraviolet-Visible Spectroscopy dan PLS-DA Meinilwita Yulia; Aniessa Rinny Asnaning; Diding Suhandy
Jurnal Penelitian Pertanian Terapan Vol 18 No 1 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v18i1.1226

Abstract

This present research is an application of UV-VIS spectroscopy and SIMCA method to  distinguish robusta ground roasted coffee from Sumatera and Java. Spectral data  measurement of the filtered and diluted aqueous coffee samples was performed using a UV-VIS spectrometer (Genesys ™ 10S UV-Vis, Thermo Scientific, USA). SIMCA model was constructed for each class, SIMCA model of Sumatera robusta coffee and SIMCA model of Java robusta coffee. Prediction results show that all predictive samples are successfully grouped correctly according to their classes using the developed SIMCA model, except for S14aPA sample that fail to be classified as robusta coffee of Sumatra. Based on the results of the discriminant power plot analysis, it is concluded that in general the contribution of wavelengths between 200-350 nm is higher than that of the wavelength between 350-600 nm. Several wavelengths with very high contribution (high discriminant power value) and seen as peaks on the plot are 245 nm, 253 nm, 264 nm, 316 nm and 327 nm.
MONITORING ON PLANT LEAF WATER POTENTIAL USING NIR SPECTROSCOPY FOR WATER STRESS MANAGEMENT Diding Suhandy
Jurnal Teknologi & Industri Hasil Pertanian Vol 13, No 1 (2008): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (55.683 KB) | DOI: 10.23960/jtihp.v13i1.10 - 12

Abstract

The performance of the calibration model with temperature compensation for on-plant leaf water potential (LWP) determination in tomato plants was evaluated. During a cycle of water stress, the on-plant LWP measurement was conducted. The result showed that the LWP values under water stress and recovery from water stress could be monitored well. It showed that a real time monitoring of the LWP values using NIR spectroscopy could be possible.   Keywords: water stress, real time monitoring of leaf water potential, NIR spectroscopy, plant response-based
PENENTUAN KEASAMAN BUAH NENAS VARIETAS CAYENNE SECARA TIDAK MERUSAK MENGGUNAKAN SHORT WAVELENGTH NEAR INFRARED (SW-NIR) SPECTROSCOPY Diding Suhandy
Jurnal Teknologi & Industri Hasil Pertanian Vol 12, No 2 (2007): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.755 KB) | DOI: 10.23960/jtihp.v12i2.40 - 46

Abstract

The acidity of pineapple fruit is one of the most important quality parameter determining the consumer acceptance. The objective of this research was to establish a nondestructive determination of acidity in cayenne pineapple fruit using short wavelength near infrared (SW-NIR) spectroscopy. In this research, a number of 124 samples, consisting of 64 samples for calibration and 60 samples for validation sample set were used, respectively. The spectra of pineapples were acquired at one position for each sample in absorbance mode using a portable spectrometer operated at 300-1100 nm. The acidity of pineapples was measured using titration method. Using the Unscrambler, statistical software for multivariate calibration, a correlation between the spectra and the acidity of pineapples will be investigated. Then, a calibration model for determining the acidity of pineapples will be developed. The result showed that the best calibration model was identified for second derivative spectra in the wavelength range of 700-970 nm with R2 = 0.95. Standard error of prediction (SEP) = 0.048 and standard error of calibration (SEC) = 0.024. The validation result showed that its calibration model had low bias. By a 95% confidence t-test there were no significance differences between the acidity measured by the titration method and that predicted by SW-NIR spectroscopy. Keywords:    pineapple, absorbance mode, acidity, near infrared spectroscopy, calibration model
Investigasi pengaruh pengenceran sampel madu pada proses klasifikasi madu menggunakan uv spectroscopy dan kemometrika [Investigation on the influence of dilution of honey samples for honey classification using uv spectroscopy and chemometrics] Diding Suhandy; Meinilwita Yulia; Kusumiyati Kusumiyati; Siti Suharyatun; Sri Waluyo
Jurnal Teknologi & Industri Hasil Pertanian Vol 26, No 2 (2021): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtihp.v26i2.72-82

Abstract

One form of honey adulteration is label adulteration for some premium honey such as uniflora honey from the honeybee species Trigona sp. One of the analytical methods that are currently developing and have the potential to perform the classification of premium honey in Indonesia is the UV spectroscopy method. In this study, an investigation was carried out on the effect of dilution on the performance of UV spectroscopy in the process of classifying Indonesian honey with different honeybees. A total of 4 types of honey samples with 10 samples each were used in this study. The honey sample was then diluted using distilled water. Each type of honey was given two dilution treatments, namely 1:20 (volume: volume) dilution of 5 samples and 1:40 (volume: volume) dilution of 5 samples. Spectral data were taken using a UV-visible spectrometer with a wavelength of 190-1100 nm (Genesys™ 10S UV-Vis, Thermo Scientific, USA) using the transmittance mode. The results of spectra analysis generally show that the sample with a 1:20 dilution has a higher absorbance intensity for both the original and modified spectra. The PCA results for each dilution showed that the honey samples could be separated into four different clusters for both 1:20 and 1:40 dilutions. The results of PCA analysis using all samples showed that the honey samples were classified into eight different clusters showing a significant effect of differences in honey sample dilution on the classification process of honey samples based on differences in the types of honeybees.
ANALISIS SPEKTRUM UV-VIS UNTUK MENGUJI KEMURNIAN KOPI LUWAK Sri Waluyo; Fipit Novi Handayani; Diding Suhandy; Winda Rahmawati; Cicih Sugianti; Meinilwita Yulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 2 (2017)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.034 KB)

Abstract

Penelitian ini bertujuan untuk membangun dan menguji model untuk identifikasi kemurnian kopi asli Luwak. Bahan yang digunakan adalah 100% kopi Luwak dan kopi Luwak yang dicampur dengan kopi Robusta dengan perbandingan pencampuran 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, dan 50%: 50%. Pada penelitian ini model dibangun dan diprediksi menggunakan metode soft independent modeling of class analogy (SIMCA) dengan taraf signifikan10%, kemudian menghitung tingkat akurasi (AC), sensitivitas (S), spesifisitas (SP), dan false alarm rate (FP) menggunakan perhitungan confusion matrix. Dari proses Hotelling T2 elipse 95 sampel, diperoleh dua model untuk mengelompokkan kopi Luwak asli (SLWK) dan kopi campuran Luwak Robusta (SLWKR). Dari uji model didapat nilai akurasi (AC) 48,48%, sensitivitas (S) 50,00%, spesifisitas (SP) 33,33%, dan false alarm rate (FP) 66,67%.Kata Kunci : Kopi Luwak; Robusta; UV-vis spectroscopy; Pemodelan; Validasi
Studi Kuantifikasi Pencampuran Kopi Dekaf - Non Dekaf Menggunakan Uv-Vis Spectroscopy dan Regresi PLS Galih Pratama; Diding Suhandy; Meinilwita Yulia; Iskandar Zulkarnain
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1904.631 KB) | DOI: 10.23960/jtep-l.v8i2.86-96

Abstract

Kopi dekaf adalah kopi rendah kafein yang memerlukan proses tambahan waktu dan biaya sehingga harganya cukup mahal. Kopi dekaf biasanya dijual dalam bentuk bubuk dan sangat sulit untuk dibedakan dengan mata. Untuk itu pada penelitian ini, UV-Vis spectroscopy diujicobakan untuk mendeteksi adanya pencampuran pada kopi dekaf dengan kopi non dekaf. Bahan yang digunakan setiap sampel adalah 1 gram, dengan jumlah sampel sebanyak 100 sampel dengan komposisi dekaf : non dekaf = 10% : 90%, 20% : 80%, 30% : 70%, 40% : 60%, 50% : 50%, 60% : 40%, 70% : 30%, 80% : 20%, 90% : 10%, dan 100% dekaf murni. Pada penelitian ini menggunakan metode regresi partial least squares (PLS) dengan program The Unscrambler versi 9.2. Persamaan kalibrasi terbaik diperoleh untuk tipe spektra Smoothing S. Golay dan SNV pada panjang gelombang 250-450 nm. Persamaan ini memiliki nilai koefisien determinasi yaitu l = 0,99 dan = 0,98,  Nilai RPD 6,61 dan faktor (F) = 2, sedangkan nilai SEC = 2,1 % dan SEV = 4,4 % dengan selisih SEC dan SEV yang paling rendah yaitu 2,3%. Dengan uji beda dua sampel berpasangan pada taraf kepercayaan 95% dapat dibuktikan bahwa kandungan kopi dekaf aktual dan prediksi tidak berbeda nyata.
STUDI PENGGUNAAN KMnO4 UNTUK MEMPERPANJANG UMUR SIMPAN PISANG MULI Ani Dahli; Agus Haryanto; Diding Suhandy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 2 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.409 KB)

Abstract

The purpose of this research is to investigate the influence of KMn Asoxidizingethylene and to evaluate theeffective of KMn to extend the shelf life of bananas. This research was conductedusing a single treatment with fourlevels of giving mass that is 1 g, 5g, 10g, and a control without KMn, with ranges of banana’s weight was 400g.The result of the research showing that KMnasan oxidizingethylenebythe carrierfroma mixture of clayandricehusk ashin the storage ofbananas has positive influencein the process ofstorage. The most effective treatment is5 gram satseven days of shelf life and KMn which is placed beside the material is not effectively used because itcan not completely absorbethylene.Keywords : KMnO4, banana, ethylene, clay, shelf life.
STUDI PENGGUNAAN UV-VIS SPECTROSCOPY UNTUK IDENTIFIKASI CAMPURAN KOPI LUWAK DENGAN KOPI ARABIKA Cicih Sugianti; Novi Apratiwi; Diding Suhandy; Mareli Telaumbanua; Sri Waluyo; Meinilwita Yulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 3 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1001.667 KB) | DOI: 10.23960/jtep-l.v5i3.%p

Abstract

This study aims to identify the authentication of civet coffee using a Soft independent modeling of class analogy(SIMCA) method and principal component analysis (PCA). The test carried out on the coffee powder measuring0.297 millimeters (mesh 50). Comparison of blend that is samples 1- 50 each 1 g of pure civet coffee, samples51- 60 each 0.9 g civet coffee and 0.1 g arabica coffee, samples 61-70 each 0.8 g civet coffee and 0.2 g arabicacoffee, samples 71-80 each 0.7 g civet coffee and 0.3 g arabica coffee, samples 81-90 each 0.6 g civet coffee and0.4 g arabica coffee, samples 90-100 each 0.5 g civet coffee and 0.5 g arabica coffee. The classification resultsshow SIMCA and PCA methods are able to identify civet coffee mixture. PC 1 explains 75% the variance of dataand PC2 explains 17% the variance of data. Values obtained on SIMCA classification are specificity 76%,sensitivity of 84% and accuracy of 80%, with a value error of 23%.Keywords: Arabica coffee,civet coffee, PCA, SIMCA, UV-Vis spectroscopy.
PENGARUH DAYA LAMPU NEON TERHADAP PERTUMBUHAN TANAMAN PAK CHOI (Brassica rapa L.) PADA SISTEM HIDROPONIK INDOOR Ning Hartati Setiasih; Sugeng Triyono; Ahmad Tusi; Diding Suhandy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 2 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.363 KB)

Abstract

The purpose of this research was to observe the influence of neon lamp power (watt) on the growth of Pak Choiin an indoor hydroponic system. This research was done by implementing several pots of Pak Choi planting undersome different treatments of lighting. The treatment consisted of neon lamp 20 watt (N1), neon 2 x 20 watt (N2),neon 40 watt (N3), neon 2 x 40 watt (N4) in a growth chamber and one treatment under the sun lighting (N0).The result of the research showed that the treatment of 2 x 40 watt neon lamp (N4) turned out to have the bestresult at all variables measured. Then, it was followed by treatment of neon 40 watt (N3) and the lowest result wasin neon 20 watt (N1). The highest biomass harvested was 35 g in N4, followed by 18 g in N3, then the 15 g in N2and 4 g in N1. However, the highest ash content was in the treatment of 20 watt neon lamp (N1), and followed byN2 (neon 2 x 20 watt). Although, Pak Choi grown under the sun ray has the highest biomass harvested, but it hadthe lowest mineral content.Keywords : Neon lamp, lamp power, Pak Choi, hydroponic wick system
Co-Authors Agus Arip Munawar Agus Haryanto Ahmad Tusi Anak Agung Gede Sugianthara Ani Dahli Aniessa Rinny Asnaning Annie Widya Subagya Apriyatama, Muhammad Ivanka Asnaning, Aniessa Rinny Asnaning, Aniessa Rinny Cicih Sugianti Dicky Ervandi Elhamida Rezkia Amien Fipit Novi Handayani Galih Pratama Hartono W, Sony Hata Maulana Kusumiyati M. Haviz Mad Yamin Mareli Telaumbanua Meinilwita Yulia Meinilwita Yulia Meinilwita Yulia Muhammad Haviz Naoshi Kondo nFN Yatmin nFN Yulianingsih Ning Hartati Setiasih ningtyas, Kurnia rimadhanti Novi Apratiwi Priastuti, Rita Catur Riri Iriani Rofandi Hartanto Sapto Kuncoro Sapto Kuncoro Siti Suharyatun Slamet Widodo Sri Waluyo Sugeng Triyono Sulusi Prabawati TAKAHISA MATSUOKA Tamrin, Tamrin Titin Yulianti Usman Ahmad Warji Warji Winda Rahmawati Winda Rahmawati Yuichi Ogawa Yulia, Meinilwita Yulia, Meinilwita Yulia, Meinilwita Yulianingsih .