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All Journal Reaktor Journal of Engineering and Technological Sciences AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Jurnal IPTEK Konversi JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Prosiding Seminar Nasional Sains dan Teknologi Terapan Journal of Food Technology and Agroindustry Jurnal Teknik Kimia Indonesia Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Jurnal Riset Rumpun Ilmu Tanaman Jurnal Sadewa: Publikasi Ilmu Pendidikan, Pembelajaran dan Ilmu Sosial Bulletin of Chemical Reaction Engineering & Catalysis Widya Teknik
Nyoman Puspa Asri
Universitas Ciputra Surabaya
Agriculture, Biological Sciences & Forestry 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 Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Non Catalytic Transesterification of Vegetables Oil to Biodiesel in Sub-and Supercritical Methanol: A Kinetic’s Study Nyoman Puspa Asri; Siti Machmudah; W. Wahyudiono; S. Suprapto; Kusno Budikarjono; Achmad Roesyadi; Motonobu Goto
Bulletin of Chemical Reaction Engineering & Catalysis 2013: BCREC Volume 7 Issue 3 Year 2013 (March 2013)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.7.3.4060.215-223

Abstract

Non catalytic transesterification in sub and supercritical methanol have been used to produce biodiesel from palm oil and soybean oil. A kinetic study was done under reaction condition with temperature and time control. The experiments were carried out in a batch type reactor at reaction temperatures from 210 °C (subcritical condition) to 290 °C (the supercritical state) in the interval ranges of temperature of 20 °C and at various molar ratios of oil to methanol. The rate constants of the reaction were determined by employing a simple method, with the overall chemical reaction followed the pseudo-first–order reaction. Based on the results, the rate constants of vegetables oil were significantly influenced by reaction temperature, which were gradually increased at subcritical temperature, but sharply increased in the supercritical state. However, the rate constants of soybean oil were slightly higher than that of palm oil. The activation energy for transesterification of soybean oil was 89.32 and 79.05 kJ/mole for palm oil. Meanwhile, the frequency factor values of both oils were 72462892 and 391210 min-1, respectively. The rate reaction for both of oil were expressed as -rTG = 72462892 exp(-89.32/RT)CTG for soybean oil and -rTG = 391210 exp(-79.05/RT)CTG for palm oil. © 2013 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)
Study on Food Loss and Food Waste: Conditions, Impact and Solutions Mitha Ayu Pratama Handoyo; Nyoman Puspa Asri
AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Vol 10 No 2 (2023)
Publisher : UNIVED Press, Dehasen University Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/agritepa.v10i2.4579

Abstract

The purpose of writing this article is an attempt to introduce readers to the problem of Food Loss & Food Waste (FL&FW) in a comprehensive concept regarding conditions, impacts and solutions for handling them. FL&FW has been a global issue for a long time, but until now its impact is getting more serious. The losses incurred by FL&FW are not only in the environmental field but are very complex including economic and social losses. Food and Agriculture Organization/FAO has estimated that 1/3 of world food production or around 1.3 billion tons which is equivalent to 990 billion USD has been lost in vain. But on the other hand, about 21,000 people die every day because of hunger. This topic will continue to be a central issue in the coming years, because the amount of food that must be provided will also continue to increase in line with the increasing world population and the problems caused by the Co-19 pandemic. Reducing food waste is a priority scale to maintain sustainable food security. The FL&FW issue since 2015 has been one of the programs of the Sustainable Development Goals (SDGs), on target 12.3 with a commitment to reduce food waste by half per capita by 2030. Therefore, all stakeholders (government, industry and society) must collaborate to implementing policies and cultural changes towards prevention of FL&FW on all fronts.
Gender-based Value Chain Mapping and Development of the Tempe Business Model in Tenggilis Kauman Surabaya Saraswati, Rahaju; Asri, Nyoman Puspa
Jurnal Sadewa : Publikasi Ilmu Pendidikan, pembelajaran dan Ilmu Sosial Vol. 1 No. 3 (2023): Agustus : Publikasi Ilmu Pendidikan, pembelajaran dan Ilmu Sosial
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/sadewa.v1i3.32

Abstract

Abstract. The method used in this research is Value Chain Mapping, Gender Sensitivity Value Chain Mapping, and Canvas Business Model. Value Chain Mapping is used to map activities ranging from upstream to downstream from a tempe industry value chain in Tenggilis Surabaya. Gender Sensitivity Value Mapping is used to map and analyze the role of gender in the tempe industry value chain. Whereas the Canvas Business Model is used to redesign the tempe industry business model in Tenggilis Surabaya based on value, gender, and competitive advantage. The results of this study are Value Chain Mapping and Tempe Business Model for the home-based tempe industry. The role of women housewives in the tempe industry value chain in Tenggilis Kauman is almost 50%. For the tempe production system and marketing management for the SME scale, such as the tempe industry in Tenggilis tempe village, the maturity level has reached the optimal level, level 5. For external suppliers, the maturity level is still low at level 2 or still in the development stage. For market orientation, competitors and product development are already at a competitive level. Revenue Streams from the tempe business process in Kampung Tempe is the sale of tempe and its processed products, as well as a tourist visit. Keywords: gender role, tempe industry, tempe business model, value chain mapping Abstrac. Metode yang digunakan dalam penelitian ini adalah Value Chain Mapping, Gender Sensitivity Value Chain Mapping, dan Canvas Business Model. Value Chain Mapping digunakan untuk memetakan kegiatan mulai dari hulu hingga hilir dari suatu rantai nilai industri tempe di Tenggilis Surabaya. Gender Sensitivity Value Chain Mapping digunakan untuk memetakan dan menganalisis peran gender dalam rantai nilai industri tempe. Sedangkan Canvas Business Model digunakan untuk mendesain ulang model bisnis industri tempe di Tenggilis Surabaya berdasarkan nilai, jenis kelamin, dan keunggulan bersaing. Hasil dari penelitian ini adalah Pemetaan Rantai Nilai dan Model Bisnis Tempe untuk industri tempe rumahan. Peran ibu rumah tangga dalam rantai nilai industri tempe di Tenggilis Kauman hampir mencapai 50%. Untuk sistem produksi tempe dan manajemen pemasaran skala UKM seperti industri tempe di Kampung Tempe Tenggilis tingkat kematangan sudah mencapai tingkat optimal yaitu tingkat 5. Untuk pemasok eksternal tingkat kematangan masih rendah pada tingkat 2 atau masih dalam tahap pengembangan. Untuk orientasi pasar, pesaing dan pengembangan produk sudah berada pada tingkat kompetitif. Aliran pendapatan dari proses bisnis tempe di Kampung Tempe adalah penjualan tempe dan hasil olahannya, serta kunjungan wisatawan. Kata kunci: peran industri tempe, gender, model bisnis tempe, pemetaan rantai nilai
ZnO/fly ash catalyst for producing biodiesel from kapok seed (Ceiba pentranda) oil Novantri, Decky Achmad; Innarta, Yahya Dwi Adhitya; Somawiharja, Yohaness; Chern, Jiang-Min; Asri, Nyoman Puspa
Konversi Vol 13, No 1 (2024): April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i1.15410

Abstract

The quantity of fossil fuels has decreased every year due to increasing energy consumption, thereby requiring alternative renewable energy sources such as biodiesel from kapok seeds. Basically, making biodiesel needs a catalyst. Catalysts are classified into two types based on their phase: homogeneous and heterogeneous. This research employed a ZnO heterogeneous catalyst with fly ash support. It investigated the optimal mole ratio of catalyst and kapok seed oil as well as the optimal catalyst dose to produce the best biodiesel yield. The methodology in this study consisted of ZnO preparation, fly ash preparation, ZnO/fly ash catalyst synthesis, and biodiesel production by the transesterification reaction process. The research variables included the dose of catalyst (wt% oil) of 3, 4, 5, 6, and 7 and the mole ratios of oil to methanol of 1:9, 1:12, 1:15, 1:18, and 1:21. The results of this study indicated that the best catalyst dose was 5% with a biodiesel yield of 58%. Meanwhile, the variable molar ratio of oil to methanol got the highest yield of 65% at 1:8. Therefore, a zinc oxide catalyst with fly ash as support had great potential to produce biodiesel from kapok seed oil.Keywords: Biodiesel; Kapok Seed Oil; ZnO; Fly ash; Yield
Pelatihan Mendukung Konservasi Air dan Pengembangan Fasilitas Pembelajaran Berbasis Sociopreneurship bagi Santri Pondok Alam Adat Budaya Nusantara Mahapatih Narotama, Mojokerto, Jawa Timur Asri, Nyoman Puspa; Nuradhi, Laurensia Maureen; Krisbianto, Oki; Marcelino, Wilson; Thie, Carolina D.; Fayola, Karen
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 7, No 2 (2023): November
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2023.v7i2.5038

Abstract

Yayasan Pondok Alam Adat Budaya Nusantara memiliki fokus dalam melestarikan adat budaya melalui tiga program utama, yakni pendidikan, rehabilitasi, dan kebudayaan. Lokasi pondok terletak di sisi barat Gunung Penanggungan, Jawa Timur, sekitar 200 meter di bawah Candi Petirtaan Jolotundo yang menjadi sumber air untuk tiga desa sekitarnya. Pengurus dan santri pondok juga memiliki rasa tanggung jawab untuk melindungi hutan di sekitar candi dari potensi kerusakan yang mungkin terjadi akibat aktivitas wisata. Namun, pondok menghadapi tantangan terkait kapasitas sumber daya manusia untuk melakukan konservasi air. Program pemberdayaan masyarakat ini bertujuan untuk memberdayakan santri pondok agar dapat menjadi pelopor sekaligus pelatih dalam melaksanakan konservasi air Jolotundo. Program ini juga melibatkan pembangunan fasilitas bangunan ramah lingkungan berupa gazebo yang digunakan oleh pengurus, santri, maupun pengunjung pondok untuk berdiskusi dan melakukan pembelajaran. Kegiatan ketiga adalah pelatihan wirausaha untuk mendukung perkembangan bisnis keluarga santri pondok yang menjadi penyokong keberlanjutan operasional pondok. Hasil evaluasi menunjukkan bahwa santri yang telah menjalani pelatihan sebagai pelatih (training of trainer) konservasi air berhasil menjadi pelatih bagi santri lainnya, pembangunan gazebo berlangsung sesuai rencana, dan motivasi serta pemahaman keluarga santri yang mengikuti pelatihan wirausaha mengalami peningkatan, khususnya dalam mengembangkan bisnis dan jejaring pemasaran produk mereka. Dapat disimpulkan, kegiatan pengabdian ini turut memberikan dukungan terhadap pembangunan berkelanjutan di kawasan wisata Candi Petirtaan Jolotundo.
Synthesis of Nano Zinc Oxide Heterogeneous Catalyst Supported with Fly Ash (NZO/FA) for Kapok Seed Oil (Ceiba pentandra) Transesterification Asri, Nyoman Puspa; Siswoyo, Deddy Kurniawan Putra; Somadiharja, Yohannes
Jurnal IPTEK Vol 27, No 2 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i2.5273

Abstract

A biodiesel product was developed using the transesterification of kapok seed oil using a nano zinc oxide heterogeneous catalyst with fly ash buffer (NZO/FA) to support the goal of adopting biofuel as a national transportation energy source in 2050. Because it is affordable, environmentally benign, and has a high porosity level, fly ash was selected as a catalyst buffer. Kapok seed oil, on the other hand, is employed as a raw material because of its high oil content—between 25 and 40 percent—and because it offers the best means of resolving the problem of the trade-off between food and fuel in the energy and pagan sectors. In this study, the NZO/FA 50-Sto catalyst's characterisation in the creation of heterogeneous catalysts and the impact of varying transesterification times on biodiesel yield are the main research topics. The NZO/FA-TO-4.5H sample code produced at a calcination temperature of 500°C for 5 hours with a yield percentage of 95.93%, transesterification time of 4.5 hours, oil to methanol molar ratio of 1:15, and transesterification reaction temperature of 80°C was found to have the highest yield in this study. Meanwhile, SNI 7182: 2015's standards are almost entirely met by the biodiesel produced in general terms.
Utilization of Low-Grade Ceiba Pentandra Oil for Biodiesel Production Using Nano Zinc Oxide Catalyst Supported by Fly-Ash Waste Somawiharja, Yohannes -; Siswoyo, Deddy Kurniawan Putra; Asri, Nyoman Puspa
Jurnal IPTEK Vol 28, No 1 (2024)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2024.v28i1.5937

Abstract

Biodiesel is a renewable energy and potentially to be developed to replace fuel derived from fossil oil. This study explores the oil of Ceiba pentandra (OCP), a low-quality oil with high free fatty acids as a feedstock for biodiesel production.  A cost-effective nano-doped zinc oxide heterogeneous catalyst was developed using fly ash waste as a support called NZO/FA. The catalyst was synthesized using co-precipitation, precipitation, and impregnation methods. Biodiesel is made through a transesterification process using a laboratory-scale glass-type batch reactor. The experiment examines how the varied temperature (60-80°C with an interval of 10°C) and varied reaction time (3-5 hours with an interval of 0.5 h) influence biodiesel yield, heating value, and final product properties. Meanwhile, other conditions were fixed at a molar ratio of oil/methanol of 1:15 and a catalyst dosage of 5%. The results showed the highest yield of 98.69%, and a GHV of 37.95 MJ/kg was obtained at a reaction temperature of 80°C and a reaction time of 5 hours. Meanwhile, almost all of the characteristics of the biodiesel produced meet SNI 7182:2015.
KAJIAN TENTANG FOOD LOSS DAN FOOD WASTE: KONDISI, DAMPAK, DAN SOLUSINYA Asri, Nyoman Puspa; Handoyono, Mitha Ayu
Journal of Food Technology and Agroindustry Vol 6 No 2 (2024): Journal of Food Technology and Agroindustry
Publisher : Journal of Food Technology and Agroindustry dipublikasikan oleh Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/jfta.v6i2.4014

Abstract

The purpose of writing this article is an attempt to introduce readers to the problem of FoodLoss & Food Waste (FL&FW) in a comprehensive concept regarding conditions, impacts andsolutions for handling them. FL&FW has been a global issue for a long time, but until now itsimpact is getting more serious. The losses incurred by FL&FW are not only in the environmentalfield but are very complex including economic and social losses. Food and AgricultureOrganization/FAO has estimated that 1/3 of world food production or around 1.3 billion tonswhich is equivalent to 990 billion USD has been lost in vain. But on the other hand, about21,000 people die every day because of hunger. This topic will continue to be a central issue inthe coming years, because the amount of food that must be provided will also continue toincrease in line with the increasing world population and the problems caused by the Co-19pandemic. Reducing food waste is a priority scale to maintain sustainable food security. TheFL&FW issue since 2015 has been one of the programs of the Sustainable Development Goals(SDGs), on target 12.3 with a commitment to reduce food waste by half per capita by 2030.Therefore, all stakeholders (government, industry and society) must collaborate to implementingpolicies and cultural changes towards prevention of FL&FW on all fronts.
Enfleurage Essential Oil From Jasmine and Rose Using Cold Fat Adsorbent Siswati Soe’eib; Nyoman Puspa Asri; A. S Dwi Saptati N. H.; Diah Agustina P
Widya Teknik Vol. 15 No. 1 (2016)
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v15i1.1525

Abstract

Flower essential oils can’t be taken by distillation, which is the oils’ component will damage because of hydrolysis and polymerization process. High-boiling components can’t be transported by water vapor so its yield and quality of the oil product is low. The alternative method for producing flower essential oils is an enfleurage process. Enfleurage is essential oil extraction process using cold fat, where the scent of flowers is absorbed by fat. The aim of the research is to obtain information about the optimum conditions based on essential oils of flowers through enfleurage method. Enfleurage process was begun with prepared the adsorbent which was made from mixing of vegetable fat and animal fat in ratio of 1:1. Fat was heated up to 60 0C further stirring for 15 minutes. As long as stirring, the fat mixture was mixed with benzoate and stirred for 2 hours. After the adsorbent was ready, a chassis was smeared with a layer of fat and flowers were palced in surface of fat for 1, 3, 5, 7, 9 and 11 days. The process was repeated with change the flowers every 24 hour with fresh flowers. When contact time had finished, fat was extracted using alcohol and it was separated by vacum distillation. The maximum yield was obtained for 5 days 0.89 % for jasmine, 0.88 % for rose and 0.84 % for frangipani. The enfleurage process is an effective method to produce flowers essential oils. The success of it depends on type of adsorbent, the level of florescence, as well as enfleurage’s period.
Extraction and Characterization of Cellulose from Arabica Spent Coffee Grounds Hamidy, Raymond; Rachman, Hans; Anggara, Jaclyn Regina; Sulistyo, Joko; Asri, Nyoman Puspa
Jurnal IPTEK Vol 29, No 1 (2025)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.7815

Abstract

Global coffee production generates significant amounts of spent coffee grounds (SCG), often discarded, creating environmental challenges. Cellulose, a major component of SCG, can be extracted for industrial applications, such as food packaging and bioplastics. This research aims to determine the optimal cellulose purification time for maximizing purity and characterize the physicochemical properties of the extracted cellulose for food industry use. The study investigates the effect of different purification times on cellulose purity. The highest purity (74.40%) was obtained at 180 minutes, with the extracted cellulose showing high crystallinity and favorable properties, such as low moisture content (3.49%), water absorption capacity (6.17%), and bulk density (0.2871 g/cm³). Characterization using SEM revealed the morphology of cellulose crystals, and analysis (Carr’s index: 15.33%, Hausner ratio: 1.1811) confirmed the material’s suitability for biocomposites in food applications. Color analysis (L*: 76.34, C*: 28.52, h*: 16.46, WI: 62.94) also highlighted the material’s potential for use in food formulations. This research provides valuable data for further applications of cellulose derived from SCG.
Co-Authors A. S Dwi Saptati N. H. A.A. Ketut Agung Cahyawan W Achmad Roesyadi Achmad Roesyadi Adelia, Ana Ana Adelia Angga Kafidhu Anggara, Jaclyn Regina Aning Ayucitra Arfina Hasmawati Chern, Jiang-Min Diah Agustina P Dicky Agustian Aditya Wardana Fayola, Karen Gunawan, Fayola Feivel Gunawan, Gabrielle Chleonadya Hamidy, Raymond Handoyono, Mitha Ayu Herman Hindarso Hilda Yunita Wono Innarta, Yahya Dwi Adhitya Jennifer Callysta Thee Joko Sulistyo Joko Sulistyo Kusno Budikarjono Kusno Budikarjono Kusno Budikarjono Kusno Budikarjono Kusno Budikarjono Marcelino, Wilson Maureen Nuradhi Mitha Ayu Pratama Handoyo Mitsuru Sasaki Motonobu Goto Motonobu Goto Motonobu Goto Nadya Errys Restyani Novantri, Decky Achmad Oki Krisbianto Pandy, Shakira Fayola Rachmad Abadi Rachman, Hans Rahaju Saraswati Restyani, Nadya Errys S. Suprapto S. Suprapto Siswati Soe’eib Siswoyo, Deddy Kurniawan Putra Sita Alfian Mubarok Siti Machmudah Siti Machmudah Siti Machmudah Somadiharja, Yohannes Somawiharja, Yohaness Somawiharja, Yohannes - Stacey, Nicholle Suniati, Fransisca Suprapto Suprapto Syahrizal Christian Tanurahardja, Devina Angela Thie, Carolina D. Vijayanti, Putu Rheina W. Wahyudiono W. Wahyudiono Wahyu Dwi Prasetiyo Wahyudiono Wahyudiono