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INDONESIA
The Indonesian Green Technology Journal
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Other
Indonesian Green Technology Journal (IGTJ) merupakan jurnal interdisipliner yang mempublikasikan hasil-hasil penelitian dalam aspek-aspek teoritis dan eksperimental tentang green science, engineering, technology, dan medicine" IGTJ mempromosikan bidang-bidang kajian interdisipliner seperti: 1. The "Naturally occuring materials, biomaterials, new eco-friendly and safer chemicals, methode and techniques in green-material, wastes treatment, food safety 2. green water management, water use efficiency, water conservation 3. green energy development, energy diversity, energy localization, energy security, renewable energy, solar energy, wind energy, hydropower energy, geothermal, bio-energy, sustainable energy management 4. sustainable wastes treatment, biodryng, composting, storage and transport 5. green biotechnology 6. green building and architecture 7. Ecocity and ecovillage, green open space, biopore, rainwater harvesting 8. green ICT, electromagnetic,radiation and human health, cell phones, computers 9. clean production technology, nano technology, global-warming technology
Arjuna Subject : -
Articles 107 Documents
 7   8   9   10   11 
Design and Development of Soil Nutrients Level Detection System based on Soil Color and pH for Crop Recommendations using Fuzzy Algorithms Novanna Rahma Zani; Ali Husein Alasiry; Ardik Wijayanto
The Indonesian Green Technology Journal Vol 11, No 1 (2022)
Publisher : Program Pascasarjana Universitas Brawijaya

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

Abstract

In recent years, modern farmers usually taking a soil sample to the laboratory or using a soil test kit to know soil macronutrients, i.e., nitrogen (N), phosphorus (P), and potassium (K), and pH to determine what kind of crop plant is suitable for their agriculture land. However, these manual methods are costly and time consumed. The characteristic of soil samples also possibly changing by time or contact during transport. This paper presents the design and development of a portable integrated soil macronutrient level and pH detection system that can analyze soil samples quickly. To give crop recommendations, IoT components and cloud-based fuzzy inference systems are used. The fuzzy algorithm decides the crop recommendation from the soil pH and level content of N, P, and K. The user can receive the crop recommendation via the android application. Data is sent from the portable system to the cloud system and vice versa using the internet network with HTTP request protocol. The accuracy test results of system plant decision on agricultural land were compared with the fuzzy logic method have a quite uniform crop output with a small error rate of 1,66%.
Green Warehousing Practices in the Philippines Romer Castillo; Kristhel Ann Gonzales; Danica Rosales; Mary Jane Zaraspe
The Indonesian Green Technology Journal Vol 11, No 1 (2022)
Publisher : Program Pascasarjana Universitas Brawijaya

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

Abstract

Green practice is a worldwide policy and everybody is concerned with sustainable development. This study assessed the green warehousing (GWH) practices in the Philippines and its sustainability dimensions. It utilized a quantitative descriptive-survey approach with questionnaire for data collection. The sample consists of 48 warehouses with warehouse managers as respondents. Statistical tests used were frequency and percentage, mean and standard deviation, Kruskal-Wallis H-Test, and Mann-Whitney U-Test. Results showed most of participating warehouses are located in Parañaque, corporate-owned, small enterprises, operating for 15 years or less, with less than 100 employees, and private. Results further revealed that GWH practices on inventory management and operations were almost always practiced while those on facility design, layout, mechanical handling equipment, staff, and warehouse management system (WMS) were often practiced. Environment, social, and economic GWH practices are also often practiced. Top GWH practices are mostly economic and some social while bottom GWH practices are mostly environmental. Significant differences on GWH practices were found on inventory management, staff, WMS, and social dimension when grouped to location; on WMS when grouped to operation years; and on facility design, environment, and social dimension when grouped to nature of service.  These findings may guide warehouse managers in enhancing their GWH practices as they gear towards attaining sustainability in support to the United Nation’s Sustainable Development Goals.
Mikroenkapsulasi Berbasis Gum Arabik dari Ekstrak Air Pletekan (Ruellia tuberosa L.) dan Aktivitas Inhibisi Terhadap Alpha Amilase Firza Rajasa Gunawan; Arie Srihardyastutie; Anna Roosdiana; Anna Safitri
The Indonesian Green Technology Journal Vol. 11 No. 2 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.02.05

Abstract

Tanaman pletekan (Ruellia tuberosa L.) diketahui memiliki kandungan metabolit sekunder seperti flavonoid, fitosterol, sehingga diusulkan memiliki aktivitas biologis sebagai inhibitor enzim alpha-amilase. Mikroenkapsulasi merupakan metode yang dapat melindungi serta mengontrol pelepasan senyawa aktif. Penelitian ini bertujuan untuk melakukan fabrikasi terhadap ekstrak air pletekan dengan menggunakan bahan penyalut gum Arabik dan menguji aktivitasnya sebagai inhibitor untuk enzim alpha-amilase, serta mengetahui karakter mikrokapsul ekstrak air pletekan yang dihasilkan. Mikroenkapsulasi dilakukan pada variasi pH (3, 4, 5, dan 6) dan waktu pengadukan (30, 60, 90, dan 120 menit). Kondisi optimum mikrokapsul ditentukan berdasarkan penentuan efisiensi mikroenkapsulasi. Hasil penelitian menunjukkan bahwa pH 5 merupakan kondisi optimum dengan nilai efisiensi mikroenkapsulasi sebesar 51,3%. Sedangkan waktu pengadukan 90 menit merupakan kondisi optimum dengan nilai efisiensi mikroenkapsulasi sebesar 52,7%. Uji aktivitas inhibisi enzim alpha-amilase pada mikrokapsul dilakukan pada kondisi optimum menghasilkan nilai IC50 sebesar 71,61 µg/mL.. Karakterisasi menggunakan spektrofotometer FTIR menghasilkan bilangan gelombang 3401,51 cm-1 (O-H), 1608,77 cm-1 (C=C), dan 1081,07 cm-1 (C-O-C) yang menandakan terbentuknya mikrokapsul ekstrak air pletekan. Sedangkan hasil karakterisasi menggunakan SEM menunjukkan bahwa permukaan mikrokapsul yang dihasilkan masih heterogeny, dengan kecenderunagn berbentuk bulat, dan menghasilkan ukuran yang beragam berkisar antara 0,933 – 3,08 µm. Kata kunci: alpha-amilase, flavonoid, mikroenkapsulasi, pH, R. tuberosa L., waktu pengadukan
The Activity of Lipase From Jatropha Seed (Jatropha Curcas L.) And Its Application On Hydrolysis of Castor Oil In Organic Solvent Taritsu Hazal Faradis; Arie Srihardyastutie; Elvina Dhiaul Iftitah
The Indonesian Green Technology Journal Vol. 11 No. 2 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.02.02

Abstract

Jatropha curcas L. is one of the seed plants that have lipase activity and can work well in hydrolysis reactions and chemical synthesis. This study aims to determine lipase activity that reacts with castor oil in organic solvents. In this research, organic solvents, especially hydrophobic solvents, were used in the hydrolysis reaction to increase lipase's catalytic activity. The organic solvent used has a hydrophobicity level between 2 and 4, namely hexane. The research stages consisted of lipase isolation, lipase assay, the effect of adding metal ions assay, and analysis of the compound of castor oil. The results showed that jatropha seeds had lipase activity in crude of 0.603 U/mL and increased to 0.911 U/mL after the addition of K+. The result of hydrolysis and transesterification of castor oil by lipase is ricinoleic acid (4,58%) and methyl ricinoleic (11,67%), and the concentration of ricinoleic acid (17.09%) and methyl ricinoleic (60.83%) were increased after addition of K+. The esterification reaction produces alkyl ester compounds such as methyl palmitate, ethyl pentadecanoate, methyl linoleate, methyl oleate, and methyl stearate. The lipase isolated from jatropha seeds not only catalyzes the hydrolysis reaction but also catalyzes chemical synthesis reactions such as esterification and transesterification. Keywords: lipase enzyme, Jatropha seeds, isolation, biocatalyst, hexane.
Theoretical Study of Fair-Trade Sustainable Hatcheries - Sizing for Cameroon and Indonesia Charles Awono Onana; jacques Hona; Laurent-Charles Valdès
The Indonesian Green Technology Journal Vol. 11 No. 2 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.02.04

Abstract

Fair-trade sustainable hatcheries are designed for developing and emerging countries, such as Cameroon and Indonesia respectively so that they can use their often-generous sunshine at the service of harmonious development. These hatcheries are sustainable by their functioning exclusively from solar irradiation and nocturnal radiative emission. They are fair-trade because of their simplicity which allows them to be manufactured by many local professionals. They are developed so that the compensation in thermal losses is ensured by thermosiphon heat transfer loops thermo-regulated by bimetallic strip. These hatcheries are also designed for tropical or equatorial climatic hazards due to fine modeling of physical phenomena which can also be implemented by using a simple computer. An excellent economic return is expected. Keywords: fair-trade sustainable hatchery; thermosiphon; bimetallic regulator; created entropy; liquid water
Pengolahan Limbah Serbuk Kayu Jati Menjadi Asap Cair Adelia Raihana Nabilah Firdausi; Elsa Safira Dwi Saputri; Nella Dwi Maulita; Durrotul Akmala; Muhammad Adil Maulana
The Indonesian Green Technology Journal Vol. 11 No. 2 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.02.01

Abstract

Pengolahan kayu di Indonesia menghasilkan banyak limbah serbuk kayu yang belum dioptimalkan penggunaanya. Salah satu cara untuk mengatasi hal tersebut adalah dengan mengolahnya menjadi asap cair yang dapat digunakan sebagai bahan baku pengawet ikan. Proses diawali dengan mengolah serbuk kayu dengan metode pirolisis, asap cair kemudian dimurnikan dengan destilasi, dan hasilnya dikarakterisasi dengan GCMS dan FTIR. Pengujian kualitas asap cair juga dilakukan, meliputi pengukuran pH, penentuan massa jenis, pengujian bahan terapung, penentuan kadar asam organik, penentuan transparansi dan warna. Pirolisis serbuk kayu jati sebanyak 2 kg menghasilkan 3,5 L asap cair dengan proses pirolisis pada suhu 400°C selama 4 jam. Kandungan kimiawi utama asap cair dari serbuk kayu jati antara lain asam karbamat fenil ester sebanyak 22,52%, 2-metoksi-fenol sebanyak 15,88%, 2-metil-2-siklopentanol 10,56%, tetrahidro-2-furanmetanol 8,22%, 2-metil-fenol 6,78%, dan 5-hidroksi-2-heptanon 5,53%. Asap cair yang dihasilkan berwarna kuning, transparan, nilai pH 3.12, dan nilai kadar asam organik 1,20%, memiliki massa jenis sebesar 0,9307 g/cm3 dan terdapat bahan terapung sebanyak 0,3 mg/mL sampel. Kata kunci: serbuk gergaji kayu, asap cair, pirolisis, kandungan kimia.
Continuous Essential Oil and Oleoresin Extraction from Star Anise (Illicium verum) by Hydrodistillation and Solvent Extraction Fitri Ariadna Sodi Miranda; Elvina Dhiaul Iftitah; Warsito Warsito; Adilatunnisa Nur Indah Berliana; Fadhlih Arya Seta
The Indonesian Green Technology Journal Vol. 11 No. 2 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.02.03

Abstract

Star anise (Illicium verum) is widely used as a medicinal herb and spice. The extracts, essential oil and oleoresin, can be produced by hydro-distillation and steam distillation, while solvent and supercritical fluid extraction can be used to extract oleoresin. In this work, the star anise is distilled to obtain the oil, subsequently, its residue is extracted by solvent extraction to get the oleoresin. Whole and grounded star anise fruit is distilled by hydro-distillation for 8, 12, 16, 20, and 24 hours, thus the highest yield is obtained at 20 hours from grounded fruit, and the highest trans-anethole content of 68.50% is obtained at 8 hours from grounded fruit. Residue from the whole fruit-distillation process is extracted by Soxhlet extraction with three types of solvent (ethanol, diethyl ether, and n-hexane) for 6 hours. The highest yield was obtained from ethanol extraction with 1.16% yield and the highest content of trans-anethol was obtained from n-hexane fraction. One sample with the highest content of anethole from whole and grounded fruit-distilled oil and oleoresin are picked, and later they are tested to measure their antioxidant capacity by Ferric Reducing Antioxidant Power Assay (FRAP). Keywords: Essential oil, oleoresin, star anise, trans-anethole
Design and Development of Soil Nutrients Level Detection System based on Soil Color and pH for Crop Recommendations using Fuzzy Algorithms Novanna Rahma Zani; Ali Husein Alasiry; Ardik Wijayanto
The Indonesian Green Technology Journal Vol. 11 No. 1 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.01.05

Abstract

In recent years, modern farmers usually taking a soil sample to the laboratory or using a soil test kit to know soil macronutrients, i.e., nitrogen (N), phosphorus (P), and potassium (K), and pH to determine what kind of crop plant is suitable for their agriculture land. However, these manual methods are costly and time consumed. The characteristic of soil samples also possibly changing by time or contact during transport. This paper presents the design and development of a portable integrated soil macronutrient level and pH detection system that can analyze soil samples quickly. To give crop recommendations, IoT components and cloud-based fuzzy inference systems are used. The fuzzy algorithm decides the crop recommendation from the soil pH and level content of N, P, and K. The user can receive the crop recommendation via the android application. Data is sent from the portable system to the cloud system and vice versa using the internet network with HTTP request protocol. The accuracy test results of system plant decision on agricultural land were compared with the fuzzy logic method have a quite uniform crop output with a small error rate of 1,66%. Keywords: Color sensor, Soil pH sensor, Soil NPK, Fuzzy Logic, Plant recommendation
Green Warehousing Practices in the Philippines Romer Castillo; Kristhel Ann Gonzales; Danica Rosales; Mary Jane Zaraspe
The Indonesian Green Technology Journal Vol. 11 No. 1 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.01.01

Abstract

Green practice is a worldwide policy and everybody is concerned with sustainable development. This study assessed the green warehousing (GWH) practices in the Philippines and its sustainability dimensions. It utilized a quantitative descriptive-survey approach with questionnaire for data collection. The sample consists of 48 warehouses with warehouse managers as respondents. Statistical tests used were frequency and percentage, mean and standard deviation, Kruskal-Wallis H-Test, and Mann-Whitney U-Test. Results showed most of participating warehouses are located in Parañaque, corporate-owned, small enterprises, operating for 15 years or less, with less than 100 employees, and private. Results further revealed that GWH practices on inventory management and operations were almost always practiced while those on facility design, layout, mechanical handling equipment, staff, and warehouse management system (WMS) were often practiced. Environment, social, and economic GWH practices are also often practiced. Top GWH practices are mostly economic and some social while bottom GWH practices are mostly environmental. Significant differences on GWH practices were found on inventory management, staff, WMS, and social dimension when grouped to location; on WMS when grouped to operation years; and on facility design, environment, and social dimension when grouped to nature of service.  These findings may guide warehouse managers in enhancing their GWH practices as they gear towards attaining sustainability in support to the United Nation’s Sustainable Development Goals. Keywords: green practices; sustainable development; sustainable warehousing; warehouse management
Physicochemical Properties and Antibacterial Activity of Kaffir Lime Oil Emulsion Applicable to Baverage Product Vincentius Johar Windrayan Pambudi; Elvina Dhiaul Iftitah; Diah Mardiana
The Indonesian Green Technology Journal Vol. 11 No. 1 (2022)
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.01.02

Abstract

Essential oil inside beverage emulsion became an interesting subject to get a new value for the fast-moving customer goods (FMCG) market. In this study, kaffir lime oil (KFO) antibacterial test on formulation and physicochemical properties of kaffir lime oil in water beverage emulsions was investigated. The main ingredients of beverage emulsions are water, high fructose corn syrup (HFCS), Arabic gum as an emulsifier, vitamin E, and kaffir lime oil as flavoring and antibacterial. KFO composition used instrument with Stability of oil-in-water emulsion was observed by measuring physicochemical properties: turbidity, alkalinity, and conductivity. GC-MS characterization on kaffir lime essential oils revealed the top three components, i.e., citronella (46,47%), citronellol (12,22%), and citronellyl acetate (6,48%). FT-IR KFO spectrum had absorbance at 1726 (C=O stretching), 2922, and 2874 cm-1 (C-H stretching from aldehyde). Absorbance was also present on 1454 and 1379 cm-1 (C=C stretching) wavelengths, resembling citronella. Gum arabic with R−S(=O)₂−OH  group addition reduced pH value to 1.1 on each composition addition and increased conductivity by 317.3 μS/cm. Fructose addition reduced the value by 153.4 μS/cm. Turbidity value increased averagely by 46,9 NTU, then reduced by 14,4 NTU. Citronellal in KFO could hinder e-coli bacterial growth and had an alt value >72 CFU/mL. This formulation study produces a beverage product with pH, conductivity, and turbidity values following the standard and has criteria under the microbiological contamination limit of BPOM and SNI standards. Keywords: emulsified beverage, kaffir lime oil, physicochemical properties, stability, perception

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