Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

4.801

P-Index

This Author published in this journals

All Journal International Journal of Public Health Science (IJPHS) HAYATI Journal of Biosciences Jurnal Teknologi Dan Industri Pangan Jurnal Pengolahan Hasil Perikanan Indonesia JOURNAL OF COASTAL DEVELOPMENT Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Kesehatan Lingkungan indonesia Agrointek Indonesian Journal of Educational Review (IJER) Cannarium (Jurnal Ilmu-ilmu Pertanian) Jurnal Riset Industri agriTECH Jurnal Pendidikan Biologi Indonesia Jurnal Industri Hasil Perkebunan Padjadjaran Journal of Dentistry Jurnal Penelitian Pendidikan IPA (JPPIPA) SUSTINERE: Journal of Environment and Sustainability Indonesian Journal of Chemistry Indonesian Journal of Agricultural Research Jurnal Teknologi & Industri Hasil Pertanian Food Science and Technology Journal (Foodscitech) Jambura FIsh Processing Journal Journal of Tropical AgriFood Jurnal Teknologi Hasil Pertanian Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Jurnal Riset Teknologi Industri Food ScienTech Journal Jurnal Natural Teknologi dan Industri Pertanian Indonesia Jurnal Pertanian Khairun (JPK) Penelitian Gizi dan Makanan (The Journal of Nutrition and Food Research) ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman

Krishna Purnawan Candra

Departement Of Agricultural Poduct Technology, Faculty Of Agriculture, Mulawarman University And Doctoral Study Program Of Environmental Science, Postgraduate Program, Mulawarman University, Jl. Sambaliung, Kampus Gunung Kelua, Samarinda 75119

Author-ID : 2883309

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

Published : 51 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Optimization Method for Bioethanol Production from Giant Cassava (Manihot esculenta var. Gajah) Originated from East Kalimantan Krishna Purnawan Candra; Kasma Kasma; Ismail Ismail; Marwati Marwati; Wiwit Murdianto; Yuliani Yuliani
Indonesian Journal of Chemistry Vol 19, No 1 (2019)
Publisher : Universitas Gadjah Mada

Here is the first report of bioethanol production from giant cassava, a variety of cassava originated from East Kalimantan. Hydrolysis on freshly grated cassava with two different acids was studied separately. The experiment was conducted as a single factor experiment in Completely Randomized Design (CRD) with five treatments (0.0–1.0 M of acid solution), each replicated three times. Reducing sugars, unhydrolyzed substance (fibers), and hydrolysate clarity was determined. The experiment was continued by studying fermentation condition using factorial experiment (2 x 4) in CRD. The first factor was starter concentration (Saccharomyces cerevisiae, 5 and 10%) and the second factor was fermentation time (2–11 days). Biomass and alcohol content in fermentate were determined. The data were analyzed by ANOVA, excluding alcohol content that analyzed by the non-parametric statistic. Optimization using regression analysis showed that hydrolysis by HCl was more effective than H2SO4. Hydrolysis solution of 0.58 M HCl gave an optimum reducing sugar in hydrolysate (5.6%), which equivalent to a yield of 28.18%. Starter concentration affected significantly on biomass and alcohol content (p < 0.001) of fermentate, while fermentation time affected significantly only on alcohol content (p < 0.001). Optimum condition of cassava hydrolysate fermentation (100 mL) was using 5% yeast for 8 days, which gave a yield of 14.17% bioethanol.

Rendemen dan kualitas minyak nilam (Pogostemon cablin Benth.) dari Kalimantan Timur serta analisis tekno-ekonominya Nur Amaliah; Krishna Purnawan Candra; Viky Bayu Parytha; Arif Kurniawan; Tazri Amrullah; Bernatal Saragih; Hudaida Syahrumsyah; Yuliani Yuliani
AGROINTEK Vol 16, No 2 (2022)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v16i2.12421

This study aimed to determine the patchouli oil (PO) business in the province of East Kalimantan based on data on the yield and quality of PO produced from several PO production centers in East Kalimantan. Bangun Rejo Village in Kutai Kartanegara Regency, Sepaku I Village and Argo Mulyo Village in Penajam Paser Utara Regency were selected as samples in this study. PO extraction from plant samples from each village was carried out using a laboratory-scale wet distillation method (3 kg leaves, branches) per batch. Each batch was carried out with six replications using different samples. The sample of PO produced by farmers was used as a control. The results showed that the yield of PO from the three villages reached 1.25-1.76%, while the quality of the oil showed an acid number of 2.407-4.747%, ester number 11.843-16.768%, PO content 33.670-43.693%, iron content 1.096-8.538 mg/kg, density 0.614-0.822 g/cm3, refractive index 1.509 nD20 and light-yellow to yellow. PO produced by farmers has an acid number of 6.311-11.920%, ester number 16.269-19.822%, ethanol solubility 1:5-1:9, patchouli alcohol content 31.96-40.89%, iron content 0.460-1.105 mg/kg, density 0.946-1,509 g/cm3, refractive index 1.508-1.510 nD20 and yellow to dark yellow in colour. Techno-economic analysis (using laboratory-scale extraction yield data) shows that PO refining business in the two villages is feasible to be carried out with B/C values of 3.62 and 6.37 for Sepaku I Village and Bangun Rejo Village. Still, it is not feasible for Argo Mulyo (B/C value of 0.842)

Fermentasi Terinduksi Acetobacter aceti dan Saccharomyces cerevisiae untuk Industri Kakao di Kalimantan Timur Anton Rahmadi; Yeni Yunus; Maria Ulfah; Krishna Purnawan Candra; Sony Suwasono
Jurnal Riset Teknologi Industri Vol.15 No.2 Desember 2021
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26578/jrti.v15i2.6997

Penelitian ini bertujuan untuk melakukan observasi fermentasi kakao di skala petani menggunakan inokulan S. cerevisiae (Sc), A. aceti (Aa), dan kombinasi keduanya yang dilihat dari pengamatan harian angka lempeng total (ALT), populasi total bakteri asam laktat (BAL), populasi total kapang-khamir (Total Yeast-Mold, TYM), pH, total asam, aktivitas antioksidan dan spektrum FTIR. Pengamatan harian dilakukan selama empat hari periode fermentasi. Pengukuran FTIR dilakukan pada hari pertama dan hari terakhir fermentasi. Aktivitas antioksidan berdasarkan reduksi DPPH diukur setelah proses fermentasi berakhir. Penelitian ini dilakukan selama delapan bulan dengan dua kali pengulangan. Hasil menunjukkan idak terdapat perbedaan signifikan terhadap total bakteri, total BAL, dan total Kapang-Khamir selama hari pengamatan fermentasi. Total asam hasil akhir fermentasi tidak kurang dari 0,08±0,01% dengan pH biji kakao berkisar pada 4,31 hingga 5,92. Aktivitas antioksidan hasil fermentasi kakao yang cukup baik diperoleh dengan inokulan kombinasi S. cerevisiae (1% v/b) dan A. aceti (1% v/b). Berdasarkan observasi spektrum FTIR pada zona identifikasi, penggunaan kombinasi inokulan menunjukkan hasil yang konsisten mendekati kualitas kakao komersial. Penggunaan gabungan inokulan Sc dan Aa direkomendasikan untuk digunakan dalam upaya meningkatkan kualitas fermentasi kakao oleh petani skala kecil.

Isolasi Bakteri Penghasil Lipase dengan Kemampuan Esterase untuk Produksi Metil Ester Arba Susanty; Fitriani Fitriani; Krishna Purnawan Candra
Jurnal Riset Teknologi Industri Vol 7 No 14 Desember 2013
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Lipase (triasilglieserol hidrolase, EC 3.1.1.3) is an enzyme that can hydrolyze mono-and di and tri acylglycerols (TAG) into free fatty acids, glycerol. Lipase has esterase activity that can form between free fatty acid esters with alcohols. Microorganisms that produced lipase spread from molds, yeasts, and bacteria. Four isolates of bacterial lipolytic ( SG_T , SG_Z , DS_T , and DS_Z ) that has the ability esterase for fatty acids from olive oil and methanol have been isolated from typical Indonesian food containing high oil (fried cassava , dodol salak). Media isolation which used are tributyrin agar –tributyrin and tributyrin - olive oil. Fried cassava isolates have a tendency to live in an acidic pH environment , while isolates dodol salak (fruit snake) has a tendency to live at alkaline pH . All isolates showed that the optimum production of lipase (from 0.45 to 0.73 U m ) was achieved in the range of 32 -hour incubation time (room temperature ) . Fried cassava isolates showed the highest esterase activity, which produce the largest methyl ester is 15.303%. This isolates is a potential lipolytic bacterial as a lipase producer for production of fatty acid methyl ester ( FAME ) / enzymatic biodiesel

THE TEACHER PROBLEMS ANALYSIS OF CRITICAL THINKING SKILLS, LEARNING MOTIVATION AND STUDENT LEARNING OUTCOMES Ria Oktaviani; Elsje Theodora Maasawet; Krishna Purnawan Candra
IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW Vol 8 No 2 (2021): Indonesian Journal of Educational Review
Publisher : Program Pascasarjana Universitas Negeri Jakarta

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

The low critical thinking skills, learning motivation and student learning outcomes are the background of this observation. Observations were made on biology teachers and class XI students at SMA Negeri 17 Samarinda, SMA Negeri 5 Samarinda, and SMA Negeri 1 Long Ikis. Based on the results of the teacher and student response questionnaires, several problems were obtained in classroom learning, including the lack of student motivation, due to conventional learning (lecture methods and less variety), the lack of opportunities for students to express ideas, and the lack of learning resources. The purpose of this study was to examine problems related to the level of critical thinking skills, learning motivation, and student learning outcomes. The research subjects were biology teachers and class XI students at SMA Negeri 17 Samarinda, SMA Negeri 5 Samarinda, and SMA Negeri 1 Long Ikis. The results showed that the critical thinking skills of SMA Negeri 17 Samarinda students were 70.68% (medium predicate), SMA Negeri 5 Samarinda was 71.49% (medium predicate) and SMA Negeri 1 Long Ikis was 71.09% (medium predicate). Furthermore, the data analysis of students' learning motivation of SMA Negeri 17 Samarinda, SMA Negeri 5 Samarinda, and SMA Negeri 1 Long Ikis respectively were as follows 78.64%, 79.92%, and 78.05% with the same predicate, namely good. Then the student learning outcomes showed SMA Negeri 17 Samarinda was 77.73% (enough predicate), SMA Negeri 5 Samarinda was 78.27% (enough predicate) and SMA Negeri 1 Long Ikis was 78.35% (enough predicate). students at SMA Negeri 17 Samarinda, SMA Negeri 5 Samarinda, and SMA Negeri 1 Long Ikis it can be concluded that the results of critical thinking skills, learning motivation, and student learning outcomes without using learning media have a major influence on the learning process.

Study of white frangipani flower and bitter grape stem ethanol extract combination on antibacterial and antioxidant activities KRISHNA PURNAWAN CANDRA; WIJAYANTI KUSUMA WARDHANI; ANTON RAHMADI; MIFTAKHUR ROHMAH; YULIANI YULIANI
Jurnal Natural Volume 20 Number 3, October 2020
Publisher : Universitas Syiah Kuala

Frangipani flower (Plumeria acuminata) and bitter grape (Tinospora crispa L. Miers) stem extract alone shows antimicrobial and antioxidant activities. However, there is a limited report about the actions from the combination of both extracts. Combinations of ethanol extract of white frangipani flower (EFF) and ethanol extract of the bitter grape stem (EBS), each of 0, 1, 2, and 3% were tested for inhibition against Staphylococcus aureus growth and DPPH (1,1-diphenyl,2-picrylhydrazyl) free radicals. A yield of 3.17 and 2.62 g of EFF and EBS, respectively, were resulted from 100 g of dried powdered of the white frangipani flower and bitter grape stem using 200 mL of absolute ethanol. The antimicrobial test was assayed using a 10% stock solution of extract diluted in water. The combination of EFF and EBS showed a synergistic effect on antimicrobial activity, but it proved an antagonistic effect on antioxidant activity. The combination of EFF 3% and EBS 3% showed the highest inhibition index on the S. aureus growth , i.e. 2.02±0.06, which is higher than the inhibition index of Amoxycillin 2%, i.e. 1.85±0.09. The highest antioxidant activity showed by 1% EFF alone (57.5 ± 0.60%), while the lowest was from the combination of EFF 1% and EBS 3% (23.4±0.30%).

Colorimeter design for dry food-products inspection using TCS3200 sensor and Arduino Mega-2560 Sulistyo Prabowo; Chandra Kadwa Utama Sutrisno; Krishna Purnawan Candra; Anton Rahmadi; Yuliani Yuliani
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 6, No 2 (2023)
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.afssaae.2023.006.02.4

This report describes the successful construction of a Colorimeter CK20.1 prototype using a TCS3200 sensor based on the Arduino Mega-2560 microcontroller for solid foodstuffs inspection. The sample color exposed is presented in RGB form. In this experiment, a commercial colorimeter (ColorFlex EZ Spectrophotometer, with the output, is in L*a*b* form) was applied as a validator of the prototype quality performance on color reading for green beans, wheat flour, palm sugar, ground coffee, and cocoa powder. Data were analyzed for mean comparison using t-test or Mann-Whitney for normally or not normally distributed data, respectively. Before data analysis, the RGB data provided by the prototype was transformed to L*a*b* by the template available from colormine.org and vice versa for the data provided by the ColorFlex EZ. The results showed that color component measurement data from the Colorimeter CK20.1 prototype and the Color FlexEZ were significantly different (p<0.05) for all the foodstuffs observed; however, the color produced by each color component is likely very similar visually. Further development of the CK2.1 prototype is being done to provide a cheap and practical color detector.

OPTIMASI RENDEMEN PADA EKSTRAKSI MINYAK KELAPA (Cocos nucifera L.) DENGAN METODE WET RENDERING Krishna Purnawan Candra; Bhibies Arghita Nindyana
Cannarium Vol 21, No 2 (2023)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/cannarium.v21i2.6919

Optimasi rendemen minyak kelapa telah dilakukan pada ekstraksi dengan metode wet rendering. Interaksi dua faktor dalam ekstraksi santan dipelajari menggunakan 250-750 mL air dengan suhu 28-65oC. Percobaan dilakukan menggunakan Response Surface Methodology (RSM) dengan Central Composite Design. Hasil penelitian menunjukkan bahwa suhu air berpengaruh tidak nyata (p0,05) terhadap rendemen minyak, tetapi jumlah air dan interaksinya keduanya berpengaruh nyata (p0,05). Rendemen tertinggi 14,48% diperoleh pada ekstraksi menggunakan kombinasi jumlah dan suhu air sebesar 750 mL dan 28oC. Model persamaan yang cocok adalah 2FI, yaitu Rendemen (%) = 10,66 + 0,2338 A + 2,72 B – 2,10 AB (A = suhu air, oC; B = jumlah air, mL).

POTENSI KOMERSIALISASI DAUN RAMBUSA (Passiflora foetida L.) SEBAGAI HERBAL PENURUN TEKANAN DARAH Erna Handai Yani; Krishna Purnawan Candra
Cannarium Vol 21, No 2 (2023)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/cannarium.v21i2.6917

Rambusa (Passiflora foetida L.) adalah tanaman liar merambat yang sering ditemui di daerah seperti rawa dan pinggiran sungai. Daun tanaman rambusa ini mempunyai fungsi alternatif sebagai anti hipertensi dan anti diabetes. Penelitian ini bertujuan membandingkan karakteristik sensoris teh yang dihasilkan dari dua metode handmade yang berbeda, yaitu metode sangrai dan metode blanching. Bahan utama teh menggunakan sampel dari Desa Babulu Darat, Penajam Paser Utara, Kalimantan Timur. Penelitian ini dirancang dalam Rancangan Acak Lengkap untuk membandingkan karakteristik sensoris teh yang dihasilkan dari dua metode handmade. Masing-masing perlakuan dilakukan dengan 6 ulangan. Parameter yang diamati adalah karakteristik keseluruhan sensoris hedonik teh yang dihasilkan meliputi warna, aroma, tekstur untuk teh dan warna, aroma, rasa untuk seduhannya. Skala yang digunakan adalah 1-5 yang menunjukkan sangat tidak suka, tidak suka, agak suka, suka, dan sangat suka. Data dianalisis dengan uji Uji Wilcoxon. Respons sensoris hedonik performance bentuk teh daun rambusa yang dihasilkan dengan metode sangrai secara nyata (p0,05) mendapatkan respons sensoris lebih tinggi tinggi (skor 4, suka) dibanding teh yang dihasilkan dengan metode blanching (skor 3, agak suka). Hasil penelitian menunjukkan bahwa kedua metode tersebut dapat digunakan, tetapi metode sangrai menghasilkan teh dengan sifat sensoris hedonik yang lebih disukai.

Profil Kualitas Organoleptik Produk Segar Dan Matang Dari Ikan Nila (Oreochromis niloticus) Hasil Pengawetan Menggunakan Daun Keluwek (Pangium Edule Reinw.) Krishna Purnawan Candra; Onedha Hosana; Yuliani Yuliani; Aswita Emmawati
Jurnal Pertanian Khairun Vol 2, No 2: (Desember, 2023)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpk.v2i2.7296

Dayak tribe, as the native people of Kalimantan, has used the Keluwek plant for generations to prepare food sources of protein such as meat and fish. Apart from getting a preferred taste, this plant has also extended the food shelf life. This research aims to determine the sensory response profile of cooked products from preserved fish using Keluwek leaves. Tilapia fish is preserved using chopped Keluwek leaves for 2 days, then steamed and fried to get the cooked product. The organoleptic properties of fresh fish from preservation were compared with fresh fish without preservation using a quality assessment score of 1-9 based on SNI 01-2729.1-2006 for eyes, body surface mucus, odor, and texture. The cooked product's hedonic organoleptic properties and hedonic quality (color, aroma, taste and texture) were also observed (score 1-5). The results showed that on day 2 of preservation, the sensory properties of preserved fish were significantly different (p0.001) from fish without preservation for the eye, body surface mucus, smell, and texture attribute. Meanwhile, the sensory properties of the steamed cooked product are significantly different (p0.001) from those for the taste attribute but are not significantly different (p0.001) for the color, aroma, and texture attribute. Likewise, the sensory properties of the cooked fried product are significantly different (p0.001) for the color, aroma, taste and texture attribute. The steamed cooked product of preserved tilapia received a neutral response. for the attribute of color, aroma, taste, and texture. Meanwhile, the cooked fried product of preserved tilapia received a bit dislike response for the attribute of color, smell, taste, and a neutral response to texture attribute.Keywords: Keluwek, Nile fish, fish preservation.

Co-Authors Abdul Hakim Ainudin Ainudin Akhmad Alberth Parlindungan Alfisyahrani Aloysius Hardoko Amin, Andi Syaiful Anis Sofianur Anton Rahmadi Anton Rahmadi Arba Susanty Arboby Gunawan Ariana Ariana Arif Kurniawan Asih Ika Suryandari Aswita Emmawati Bernatal Saragih Bernatal Saragih Bernatal Saragih Bhibies Arghita Nindyana Bujang, Kopli Chandra Kadwa Utama Sutrisno Daniel Tarigan David Patra Didimus Tanah Boleng Elisa Maulidya Putri Elsje Theodora Maasawet Elsje Theodore Massawet Emmawati, Aswita Erna Handai Yani Esti Handayani Esti Handayani Hardi Fitriani . Fitriani Fitriani Hadi Suprapto Hamka Haris Retno Susmiyati Hendra Saputra Hendri Wardana Herliani Herliani Hosana, Onedha Hudaida Syahrumsyah Hudaida Syahrumsyah Irma Febriandini Islamudin Ahmad Ismail Ismail Iwan Muhamad Ramdan Kasma Kasma Kusdiyanto, Hery Lambang Subagiyo LESTARI, GISTI MALINDA Lisnawati Lisnawati Makrina Tindangen Maria Ulfah Marwati Masitah - Masyhudi Masyhudi, Masyhudi Maulida Rachmawati Miftakhur Rohmah, Miftakhur Muhammad Amir Masruhim Muhammad Arifin Muhammad Fahri Muhammad Sultan Muhammad Zulkarnain Ramadana Asir Neni Suswatini Nindyana, Bhibies Arghita Nooryani Nooryani Nur Amaliah Nurul Hidayati Nurul Puspita Palupi Onedha Hosana PETER ROGGENTIN Prabowo, Sulistyo Prabowo, Sulistyo Purwanto, Herry Ratna Setia Ningsih Resi Mandalia Rezeki, Kartika Sri Ria Oktaviani Rinten Anjang Sari Rita Diana ROLAND SCHAUER Sari, Eirine Yemeima Sarinah . Sarwono . Sri Roma Yuliarta Sukartiningsih Sukartiningsih Sukmiyati Agustin Susanty, Arba Susilo Suwasono, Sony Taufan Purwokusumaning Daru, Taufan Purwokusumaning Tazri Amrullah Tholhah, Tholhah Vandalita Rambitan Viky Bayu Parytha WIJAYANTI KUSUMA WARDHANI Wiwit Murdianto Yani, Erna Handai Yeni Yunus Yudha Agus Prayitno Yuliani Yuliani Yuliani, Yuliani Yusak Hudiyono Yusak Hudiyono, Yusak

Title

Found 51 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 51 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 51 Documents
Search