Article Per Year (5 Year)
p-Index From 2020 - 2025
2.555
P-Index
This Author published in this journals
All Journal Reaktor International Journal of Science and Engineering (IJSE) International Journal of Renewable Energy Development TEKNIK METANA JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Lingkungan JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Bulletin of Chemical Reaction Engineering & Catalysis Communications in Science and Technology ASEAN Journal of Chemical Engineering Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Journal Of Sustainability Perspectives Pharmaceutical Sciences and Research (PSR) Journal of Sustainability Perspectives International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Dessy Ariyanti
Department Of Chemical Engineering, Universitas Diponegoro, Semarang 50275, Indonesia
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health

Published : 29 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 29 Documents
Search

 1   2   3 
Taro Tube Flour Modification via Hydrogen Peroxide Oxidation Catarina Sri Budiyati; Dessy Ariyanti
International Journal of Science and Engineering Vol 7, No 2 (2014)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6394.485 KB) | DOI: 10.12777/ijse.7.2.137-142

Abstract

Colocasia esculentum (L) Schott known as “Talas bogor” in Indonesian language is easily grown in every island in Indonesia. It proved to have high content of carbohydrate as it can be utilize for wheat flour replacement in addition to prior modification using hydrogen peroxide. The objective of this research was to improve the quality of taro flour by assessing the effect of several parameter such as ratio of slurry, oxidation agent concentration, oxidation time and temperature. The result shows that using ratio of slurry 20% with 2% of H2O2 concentration in temperature of oxidation process 30oC and 60 min operation time can produced good quality of modified taro tube flour in terms of swelling power and water solubility with 7.2 g/g and 6.93% respectively. This condition has chosen by taking the technical and economic feasibility as consideration. This result also can be used as proof of evidence that using H2O2 as an oxidizing agent in the process of taro tube flour modification can improve the functional properties of the flour. As the swelling power and water solubility of original taro tube flour were 3.7 g/g and 1.8% respectively.
Potential Production of Polyunsaturated Fatty Acids from Microalgae Noer Abyor Handayani; Dessy Ariyanti; Hady Hadiyanto
International Journal of Science and Engineering Vol 2, No 1 (2011)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (168.576 KB) | DOI: 10.12777/ijse.2.1.13-16

Abstract

Currently, public awareness of healthcare importance increase. Polyunsaturated fatty acid is an essential nutrition for us, such arachidonic acid, docosahexaenoic acid and eicosapentaenoic acid. The need of Polyunsaturated fatty acid generally derived from fish oil, but fish oil has a high risk chemical contamination. Microalgae are single cell microorganism, one of Phaeodactylum tricornutum which have relatively high content of eicosapentaenoic acid (29,8%). Biotechnology market of Polyunsaturated fatty acid is very promising for both foods and feeds, because the availability of abundant raw materials and suitable to develop in the tropics. This literature review discusses about the content of Polyunsaturated fatty acid in microalgae, omega-3, omega-6, Polyunsaturated fatty acid production processes, and applications in public health
An Overview of Biocement Production from Microalgae Dessy Ariyanti; Noer Abyor Handayani; Hadi Hadiyanto
International Journal of Science and Engineering Vol 2, No 2 (2011)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.797 KB) | DOI: 10.12777/ijse.2.2.31-33

Abstract

The invention of microorganism’s involvement in carbonate precipitation, has lead the exploration of this process in the field of construction engineering. Biocement is a product innovation from developing bioprocess technology called biocementation. Biocement refers to CaCO3 deposit that formed due to microorganism activity in the system rich of calcium ion. The primary role of microorganism in carbonate precipitation is mainly due to their ability to create an alkaline environment (high pH and DIC increase) through their various physiological activities. Three main groups of microorganism that can induce the carbonate precipitation: (i) photosynthetic microorganism such as cyanobacteria and microalgae; (ii) sulphate reducing bacteria; and (iii) some species of microorganism involved in nitrogen cycle. Microalgae are photosynthetic microorganism and utilize urea using urease or urea amidolyase enzyme, based on that it is possible to use microalgae as media to produce biocement through biocementation. This paper overviews biocement in general, biocementation, type of microorganism and their pathways in inducing carbonate precipitation and the prospect of microalgae to be used in biocement production.  Keywords— Biocement, Biocementation, Microalgae, CaCO3 precipitation
PEMBUATAN BIOETANOL DARI LIMBAH KEJU (WHEY) MELALUI PROSES FERMENTASI FED-BATCH DENGAN Kluyveromyces marxianus Desiyantri Siti P.; Apsari Puspita A.; Dessy Ariyanti; H Hadiyanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (124.493 KB)

Abstract

Development of bioethanol production as a renewable energy must be supported with research about finding sources of raw materials that can be converted to bioethanol product. Cheese whey is one of these raw materials. The aim of this study is to compare batch and fed-batch operation in fermentation of whey, and to determine the effect of temperature for fed-batch operation in bioethanol process. Cheese whey is by-product of the dairy industry, which contain of 4-5% lactose. Kluyveromyces marxianus is one of microorganism used to as stater during ethanol fermentation with whey as a medium. The result showed that ethanol fermentation from whey using Kluyveromyces marxianus in fed-batch system with initial pH 4,5 and temperature operation of30oC give better result than batch system. Growth rate and biomass productivity in fed-batch system are 0,186/h and 6,47 gr/Lh respectively, while for batch are 0,13/h and 4,74 gr/L h, respectively concentration and yield ofethanol for fed-batch are 7,9626 gr/L and 0,21 gr ethanol/gr substrate, for batch system are 4,6362 gr/L and0,12 gr ethanol/gr substrate. Fermentation under temperature of 30oC showed optimum growth rate and concentration of biomass which is 0,186/h and 13,4 gr/L. Maximum ethanol concentration  was achieved at7,9626 gr/L
Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment Dessy Ariyanti; Junzhe Dong; Junye Dong; Wei Gao
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (603.473 KB) | DOI: 10.9767/bcrec.11.1.414.40-46

Abstract

Titanium dioxide (TiO2) has gained much attentions for the last few decades due to its remarkable performance in photocatalysis and some other related properties. However, its wide bandgap (~3.2 eV) can only absorb UV energy which is only ~5% of solar light spectrum. The objective of this research was to improve the photocatalytic activity of TiO2 by improving the optical absorption to the visible light range. Here, colored TiO2 nanoparticles range from light to dark grey were prepared via aluminium treatment at the temperatures ranging from 400 to 600 oC. The modified TiO2 is able to absorb up to 50% of visible light (400-700 nm) and shows a relatively good photocatalytic activity in organic dye (Rhodamine B) degradation under visible light irradiation compared with the commercial TiO2. 
PENGUATAN USAHA MIKRO DAN KECIL KERUPUK KULIT IKAN CAP MANTAP DI MLATIBARU, SEMARANG DALAM UPAYA PENCAPAIAN SUSTAINABLE DEVELOPMENT GOALS (SDGs) Dessy Ariyanti; Bakti Jos; Andri Cahyo Kumoro; Aji Prasetyaningrum; Diah Susetyo Retnowati
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 4, No 1 (2022)
Publisher : Fakultas Teknik Universitas Diponegoro

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

Abstract

Peran usaha mikro, kecil, dan menengah (UMKM) untuk merealisasikan tujuan pembangunan Berkelanjutan (Sustainable Development Goals SDGs) terutama Tujuan 8 yaitu  mendukung pertumbuhan ekonomi yang inklusif dan berkelanjutan, tenaga kerja penuh dan produktif dan pekerjaan yang layak bagi semua di Indonesia sangat besar. Salah satu UMK yang berada di daerah Mlati Baru, Kota Semarang adalah UMK Kerupuk Kulit Ikan Cap Mantap. UMK ini didirikan oleh Bapak Afnan Abdul Syaid pada tahun 2015. UMK ini memerlukan pendampingan sehingga dapat lebih berdaya dan berkembang. Tantangan yang dialami oleh UMK Kerupuk Kulit Ikan Cap Mantap ini adalah proses produksi yang masih mengandalkan cuaca, terutama di musim hujan, proses pengeringan kulit ikan basah sulit dilakukan dan waktu yang dibutuhkan menjadi sangat lama. Tantangan yang kedua adalah keterbatasan alat untuk packing sehingga kerupuk menjadi mudah rusak dan turun kualitasnya. Tantangan yang selanjutnya adalah pemasaran yang selama ini hanya dilakukan secara konvensional yaitu dijajakan di beberapa toko oleh-oleh dan supermarket. Pencapaian target tersebut diupayakan dengan berbagai metode dan kegiatan yang telah disusun yaitu survey awal, riset pasar, analisa SWOT, penyusunan strategi penguatan dan pendampingan, dimana Kegiatan-kegiatan tersebut ditargetkan untuk menghasilkan: Data UMK Kerupuk Kulit Ikan Cap Mantap, Data terbaru hasil riset pasar usaha yang serupa, Analisa SWOT dari UMK Kerupuk Kulit Ikan Cap Mantap, Strategi Penguatan Kerupuk Kulit Ikan Cap Mantap. Luaran yang ingin dicapai pada kegiatan ini adalah pengetahuan tepat guna yang dapat  diimplementasikan oleh UMK Kerupuk Kulit Ikan Cap Mantap di Mlatibaru, Semarang dalam upaya peningkatan kapasitas produksi dan pemasaran dari produk yang dihasilkan. Kata kunci : UMKM, kerupuk kulit ikan, pemberdayaan
PENGENALAN TEKNOLOGI PEMBUATAN KOMPOS DARI LIMBAH RUMAH TANGGA DI KELURAHAN BENDAN NGISOR KECAMATAN GAJAH MUNGKUR Dessy Ariyanti; Aprilina Purbasari; Slamet Priyanto; Purwanto Purwanto; Setia Budi Sasongko
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 3, No 3 (2021)
Publisher : Fakultas Teknik Universitas Diponegoro

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

Abstract

Hingga saat ini masyarakat secara luas dan warga di kelurahan Bendan Ngisor, Kecamatan Gajah Mungkur, Kota Semarang khususnya masih belum memiliki pengetahuan yang cukup mengenai sampah, terutama manfaat dari program reuse, reduce, recycle dari sampah maupun kemudahan dari penerapan metode 3R dalam kehidupan sehari-hari. Termasuk diantaranya pengetahuan mengenai kompos dari sampah rumah tangga dan teknologi pembuatannya. Kegiatan pengabdian masyarakat ini diselenggarakan untuk mendukung upaya pemerintah dalam mensosialisasikan program Reuse, Reduce and Recycle untuk mengatasi permasalahan sampah di Kota Semarang dengan memberikan pelatihan tentang pengetahuan dan keterampilan dalam mengelola secara mandiri serta memanfaatkan sampah rumah tangga terutama sampah organik menjadi kompos. Pasca pelatihan, 90% peserta mendapatkan pengetahuan tentang pembuatan kompos, dan 10% warga masyarakat mulai menerapkan teknologi pengomposan dirumahnya masing-masing.
Submerged Membrane Photo Reactor (SMPR) with Simultaneous Photo Degradation and TiO2 Catalyst Recovery for Efficient Dyes Removal Dessy Ariyanti; Filicia Wicaksana; Wei Gao
ASEAN Journal of Chemical Engineering Vol 21, No 2 (2021)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.65952

Abstract

In this study, a polyvinylidene difluoride (PVDF) hollow fiber membrane module incorporated with TiO2 was submerged into a photocatalytic reactor to create a hybrid photocatalysis with membrane separation process (a submerged membrane photoreactor, SMPR), for advanced dyes wastewater treatment. The SMPR performance was assessed by the degradation of single component Rhodamine B (RhB) and degradation of mixed dyes (RhB and Methyl orange (MO)) in a binary solution. Several operational parameters such as the amount of catalyst loading, permeate flux, and the effect of aeration were studied. Fouling tendency on the membrane was also investigated to determine the optimum operating conditions. The results show that the synergetic effect of the low catalyst loading and permeate flux creates the environment for optimum light penetration for high photocatalytic activity as the hybrid system with low catalyst loading (0.5 g/L) and 66 L/m2h of flux with aeration at 1.3 L/min has proven to increase the photocatalysis performance by 20% with additional catalyst recovery. In addition, applying the low catalyst loading and flux permeate with aeration brings minimal fouling problems.
TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties Dessy Ariyanti; Afiatin Afiatin; Pury Diana Shintawati; Aprilina Purbasari
Jurnal Kimia Sains dan Aplikasi Vol 24, No 6 (2021): Volume 24 Issue 6 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1348.427 KB) | DOI: 10.14710/jksa.24.6.192-199

Abstract

In this paper, self-synthesized TiO2 nanoparticle was used as a coating material with the addition of polydimethylsiloxane (PDMS) on the surface of the glass and ceramic substrate via spray coating. The self-cleaning properties of the coating with photocatalytic activity mechanism were observed under irradiation of black lamp as well as surface wettability. The antimicrobial properties and the morphology under a scanning electron microscope were also investigated. The results showed that the coating exhibited self-cleaning properties, as demonstrated by the photocatalytic degradation of methylene blue up to 80% and wettability as a super hydrophilic layer with a water contact angle less than 10° for both glass and ceramic substrate. The coating also shows an antimicrobial property by extending the radius of microbial growth up to 67% compared to the uncoated sample. 3% TiO2 addition with 50% w/w PDMS is the optimum coating ratio for maximum photocatalytic activity, super hydrophilic, and antimicrobial properties.
Uji Efektivitas Antimikroba Beberapa Merek Dagang Pembersih Tangan Antiseptik Radji, Maksum; Suryadi, Herman; Ariyanti, Dessy
Majalah Ilmu Kefarmasian Vol. 4, No. 1
Publisher : UI Scholars Hub

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

Abstract

In Modern life, peoples are more conscious to keep their healthy. One of the way to keep our body healthy is by keeping our hand clean. Washing hands with soap and water, sometimes is unpractical since it need water to rinse off the soap. Prod-uct innovation has been developed to overcome the unpractical side, which is called antiseptic hand wash or hand sanitizer. This study has been done to evaluate the antimicrobial activity of some hand sanitizer products marketed in Jakarta. The re-sult showed that alcohol-based hand sanitizer and triclosan-based hand sanitizer used in this experiment were significantly reduce bacterial counts on hands, but not all of the samples are effective in reducing fungal counts on hands.
Co-Authors Adi Saputra, Erwan Adrianus Kristyo Prabowo, Adrianus Kristyo Afiatin Afiatin Agnes Priska Tiarasukma Aji Prasetyaningrum Ambariyanto , Andri Cahyo Kumoro Aprilina Purbasari Apsari Puspita A. Azizah, Nadya Ummi Bakti Jos Bayu Samudra, Muhammad C Sri Budiyati Catarina Sri Budiyati Denny Nugroho Sugianto Desiyantri Siti P. Diah Susetyo Retnowati Dita Baeti Pridiana Erwan Adi Saputro Faishal Maulana Kusumah Filicia Wicaksana H Hadiyanto Hamzah, Fazlena Handayani, Elinna Putri Hapsari, Farida Diyah Heny Kusumayanti Herman Suryadi I N. Widiasa Intan Nurcahyani Junye Dong Junzhe Dong Khoirul Huda Lesdantina, Dina Maksum Radji Marcelinus Christwardana Mo’ungatonga, Satriani Noer Abyor Handayani Peter Kusnadi Purwanto Purwanto Purwoko, Agus Pury Diana Shintawati Saputra, Erwan Adi Setia Budi Sasongko Slamet Priyanto Srivastava, Vimal Chandra Wei Gao Wei Gao Wei Gao Yos Johan Utama