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Biobutanol Production Using High Cell Density Fermentation in a Large Extractant Volume Darmayanti, Rizki Fitria; Tashiro, Yukihiro; Sakai, Kenji; Sanomoto, Kenji; Susanti, Ari; Palupi, Bekti; Rizkiana, Meta Fitri
International Journal of Renewable Energy Development Vol 9, No 3 (2020): October 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2020.29986

Abstract

Biobutanol is well known as a suitable substitute for gasoline, which can be applied without engine modification. Butanol toxicity to the producer strain causes difficulties to grow strain of higher than 4 g/L dry cell weight and to produce butanol higher than 20 g/L. Fermentation using high initial cell density has been reported to enhance butanol productivity. In addition, oleyl alcohol has been recognized for effective extraction of butanol because of its selectivity and biocompatibility with reduced the effect of toxicity. Butanol fermentation with high cell density and large extractant volume has not been reported and is expected to improve butanol production in a minimum medium volume setting. Clostridium saccharoperbutylacetonicum N1-4, C. beijerinckii NCIMB 8052 (8052), and C. acetobutylicum ATCC 824 (824) were used in this study. Three kinds of media, TYA, TY, and TY-CaCO3, were used in this conventional extractive fermentation. Then, in situ extractive fermentation with Ve/Vb ratios at 0.1, 0.5, 1.0, and 10 were used. Total butanol concentration was defined as the broth-based total butanol, which is the total amount of butanol produced in broth and extractant per the volume of broth. TYA medium yielded the highest total butanol concentrations at N1-4 (12 g/L), 8052 (11 g/L), and 824 (15 g/L), and the highest partition coefficient (3.7) among the three media with similar Ve/Vb ratio at 0.5. N1-4 yielded the highest increment of total butanol production (22 g/L) in the extractive fermentation with high cell density. Low butanol concentration of 0.8 g/L in the broth was maintained using the extractant at a broth volume ratio (Ve/Vb) much lower than 4.4 g/L with a ratio of 0.5. Ve/Vb ratio of 10 which provided 2-fold higher total butanol concentration (28 g/L) than that of 11 g/L obtained using a Ve/Vb ratio of 0.5. These results indicated that a larger volume of extractant to broth improved total butanol concentration by reducing butanol toxicity and led to high medium based butanol yield in fermentation using high cell density. 
ANTESENDEN KEPUTUSAN PEMBELIAN TANAMAN HIAS PADA MASA PANDEMI DI SURAKARTA Damayanti, Rizki Putri; Susanti, Ari
JURNAL LENTERA BISNIS Vol 10, No 2 (2021): JURNAL LENTERA BISNIS
Publisher : POLITEKNIK LP3I JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34127/jrlab.v10i2.439

Abstract

The study was conducted to find out that the decision to purchase ornamental plants during the Covid-19 pandemic was influenced by several factors such as Trend, Lifestyle, Price, and Uniqueness. The variables used in this study are Trend (X1), Lifestyle (X2), Price (X3), Uniqueness (X4) and Purchase Decision (Y). This research was conducted with a quantitative approach, one of which is purposive sampling using the roscoe count so that 100 respondents can be taken who are ornamental plant hobbyists or ornamental plant consumers during the pandemic. The collection technique uses a Likert scale to make it easier for respondents to fill out the questionnaire. Data analysis in this research is multiple linear regression analysis. This study uses the SPSS 21 tool to see the results of the data obtained. The results of this study Trend, Lifestyle and Uniqueness have a positive and significant influence on purchasing decisions of ornamental plants during the pandemic. Then the price does not have a positive and significant influence on purchasing decisions during the pandemic.Keywords: Trend, Lifestyle, Price, Uniqueness, Purchase Decision
PENGARUH KUALITAS PRODUK, HARGA, DAN KUALITAS PELAYANAN TERHADAP KEPUASAN KONSUMEN PADA CAFE KO.WE.COK DI SOLO Kumrotin, Evi Laili; Susanti, Ari
J-MIND (Jurnal Manajemen Indonesia) Vol 6, No 1 (2021): J-Mind Jurnal Manajemen Indonesia
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.977 KB) | DOI: 10.29103/j-mind.v6i1.4870

Abstract

Product quality is a condition of labor, tasks, processes and an environment with changing conditions for the fulfillment of daily needs. Which in this case shows that the quality of the product has a function that can satisfy consumers in meeting consumer product needs. The object of this research is Cafe KO.WE.COK Solo. To determine whether or not a product quality, price and service quality affect customer satisfaction is the aim of this study. Using a questionnaire including primary data to analyze the data in this study. The sample taken in this study were 50 respondents and the sampling technique used was accidental sampling. The results of the study used the validity test method, reliability test, classical assumption test, multiple linear regression test, T test, F test, and the coefficient of determination test. From the calculation of the validity test the value of r results is greater (>) than the value of r table, so the validity test has valid results. From the calculation of reliability it is said to be reliable or reliable. From the research results, the classical assumption test consisting of normality test, multicollinearity test and heteroscedasticity test. Shows normality test results and does not occur multicollinearity and heteroscedasticity does not occur. The multiple linear regression test shows that these variables can increase customer satisfaction at the KO.WE.COK Solo cafe. In the F test, the three X variables are said to be jointly influencing and related to customer satisfaction.
PENGGUNAAN MEDIA SOSIAL INSTAGRAM DAN LITERASI KEUANGAN TERHADAP PERILAKU KONSUMTIF BERBELANJA ONLINE GENERASI MILENIAL Susanti, Ari; Rikah, Rikah
JAB (Jurnal Akuntansi & Bisnis) Vol 6, No 01 (2020): Vol 6, No 01 (2020): Vol. 6, No. 01 JUNI 2020
Publisher : JAB (Jurnal Akuntansi & Bisnis)

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

Abstract

ABSTRACT Increased internet usage Required for instagram specific social media increases in millennial generation so research is needed whether millennial financial literacy in the use of social media influences consumptive behavior. This research deals with objectives relating to social media, finance for perliaku behavior. Responding in this study the replacement of 100 of the generations that match the criteria specified in this study. The results of this study prove that Social Media (X1) and Financial Literacy (X2) influence consumer behavior (Y) in millennial generation. This is because the generation is concerned with the desires of the needs. Keywords: Social Media, Financial Literacy and consumptive behavior
Kualitas Produk, Citra Merk, dan Persepsi Harga Terhadap Keputusan Pembelian Motor Honda Beat Supardi, Nanang Triyono; Susanti, Ari
Jurnal Ekonomi, Manajemen, Akuntansi, Bisnis Digital, Ekonomi Kreatif, Entrepreneur (JEBDEKER) Vol 3 No 1 (2022): Desember 2022
Publisher : Sekolah Tinggi Ilmu Ekonomi Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56456/jebdeker.v3i1.132

Abstract

Kebutuhan transportasi memiliki keefektivitasan dan efisiensi kebutuhan mobilitas manusia dari satu lokasi kelokasi lain dan dapat memiliki peningkatan pada suatu masa. Dalam hal ini, dapat menyebabkan pesatnya perkembangan industry otomotif tanah air. Hal ini juga terlihat dari data penjualan resmi Asosiasi Industri Sepeda Motor Indonesia (AISI). Di Indonesia, besaran produsen motor automatic penggerak sepeda motor untuk terus berinovasi dan meningkatkan kecanggihan teknologi produk motor automatic semakin meningkat. Saat ini merek motor automatic Honda mendominasi beberapa merek motor automatic di Indonesia terutama sepeda motor honda beat yang menjadi top seller merek sepeda motor honda, dan merek motor automatic Yamaha menduduki posisi kedua cara menjual sepeda motor di indonesia. Tujuan dari pemeriksaan yang teliti ini adalah untuk mengenal perbuatan dari kualitas produk, harga dan citra merek terhadap hasil pemeriksaan pembelian motor automatic Honda Beat. Survei ini menggunakan sekelompok orang dengan jumlah 100 responden yang menggunakan motor automatic Honda Beat. Bersumber pada survey yang dilakukan dengan menggunakan metode Roscoe, metode ini menggunakan survey atau survei yang disampaikan kepada penjawab yang menggunakan motor automatic Honda Beat. Metode uji perangkat menggunakan metode uji validitas dan reliabilitas. Penelaahan dan penguraian data menggunakan beberapa uji penguraian linier, uji t, uji F, dan skala penentuan. Hasil penelaahan dan penguraian data menyatakan bahwa kualitas produk (X1) memiliki pengaruh yang nyata dan pasti terhadap ketetapan pembelian motor automatic Honda Beat. Citra merek (X2) tidak memiliki pengaruh yang nyata dan pasti terhadap ketetapan pembelian Honda Beat. Persepsi harga (X3) tidak memiliki pengaruh yang nyata dan pasti terhadap ketetapan yang diberikan motor Honda beat. Rangkuman Kebutuhan transportasi meliputi keefektifitasan dan efisiensi kebutuhan mobilitas manusia dari satu tempat ke tempat lain yang berhasil meningkat dari waktu ke waktu. Dalam hal ini, dapat menyebabkan pesatnya perkembangan industry otomotif tanah air. Hal ini juga terlihatdari data penjualan resmi Persekutuan Dagang Industri Sepeda Motor Indonesia (AISI). Di Indonesia, banyaknya penghasil barang motor auto matic penggerak sepeda motor untuk terus berinovasi dan meningkatkan kecanggihan teknologi produk sepeda motor semakin meningkat. Saat ini merek sepeda motor Honda mendominasi beberapa merek motor automatic di Indonesia terutama pada motor automatic honda beat yang menjadi top seller merek sepeda motor honda, dan merek sepeda motor Yamaha menduduki posisi kedua penjualan sepeda motor di indonesia.
Determinan Minat Mahasiswa Akuntansi Memilih Karir Entrepreneur dengan Pendidikan Kewirausahaan Sebagai Variabel Intervening (Studi Empiris Pada Mahasiswa STIE Surakarta) Octavia, Dewi Ika; Susanti, Ari; Saputra, Era Trianita
Jurnal Ekonomi, Manajemen, Akuntansi, Bisnis Digital, Ekonomi Kreatif, Entrepreneur (JEBDEKER) Vol 3 No 2 (2023): Juni 2023
Publisher : Sekolah Tinggi Ilmu Ekonomi Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56456/jebdeker.v3i2.192

Abstract

This study aims to determine the effect of family environment, business capital and entrepreneurial motivation on interest in entrepreneurship with entrepreneurship education as the intervening variable among students of STIE Surakarta. This research is a quantitative research using research objects of accounting students at STIE Surakarta by distributing questionnaires to respondents who were randomly selected. The population of this study was 559 respondents with random sampling by determining the number of samples in this study using Slovin's formula. The SEM-PLS (Structural Equation Modeling - Partial Least Squares) data analysis method uses the SmartPLS 6.0 program. The results of this study indicate that family environment, business capital, entrepreneurial motivation have a positive effect on entrepreneurship education. Entrepreneurial motivation has a positive effect on students' interest in entrepreneurship. Home environment has a positive effect on student interest in accounting Entrepreneurship education fails to mitigate the influence of home environment and business capital on student interest in accounting for entrepreneurship, but it can dampen the influence of entrepreneurial motivation on entrepreneurship. interest of accounting students in entrepreneurship at STIE Surakarta.
Pelatihan Komunikasi Efektif Tentang Pencegahan Bahaya Narkoba Bagi Sukarelawan Dalam Menyukseskan Program Sekolah Bersinar (Bersih Narkoba) Susanti, Ari; Izzuddin, Ahmad
Journal Of Humanities Community Empowerment Vol. 1 No. 1 (2023): Journal of Humanities Community Empowerment
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jhce.v1i1.368

Abstract

This service is a follow-up to the results of previous research that discussed Therapeutic Communication in Drug Social Rehabilitation Clients at the Gennesa Banyuwangi Foundation. In a previous study, it was found that one of the clients at the Gennesa Foundation had been taking drugs since elementary school grade 5 types of alcohol and cigarettes. Starting from trial and error with the invitation of friends around him, then getting used to stealing and selling things in his house just to satisfy his addiction. Drugs have spread among children. Therefore, effective communication techniques are needed to socialize the dangers of drugs to children. This service is carried out by holding effective communication training for volunteers with the Training of Trainer (ToT) model which is attended by 25 students from various universities in Jember Regency. This devotion format is packaged in composition: 20% theoretical exposure, 20% discussion and 60% simulation. The material presented was socialization of the dangers of drugs, effective communication in the fight against drugs and simulations of effective communication techniques. The hope to be achieved from this service is that trained volunteers can be deployed in socializing the dangers of drugs to children in their neighborhoods and schools
Comparison Of Dragon Fruit And Guava Juice With Iron Tablets In Increasing Hemoglobin Levels In Anemic Adolescent Girls Laila, Ani; Permatasari, Septi Indah; Rahmalia, Meizy; Susanti, Ari
JURNAL PROTEKSI KESEHATAN Vol 12 No 2 (2023): JPK: Jurnal Proteksi Kesehatan
Publisher : Poltekkes Kemenkes Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36929/jpk.v12i2.800

Abstract

Anemia is a health problem among teenagers, especially young women in Indonesia. As many as 27.2% of adolescent girls experience anemia. Efforts to overcome anemia in adolescents are carried out by meeting the iron requirements needed. This study aims to determine the comparison of dragon juice and guava juice with iron tablets in increasing hemoglobin levels in adolescent girls. This research is a quasi-experimental study with a two group post test design. Samples were taken purposively, with a total of 20 young women. Based on the results of the Independent T-test, there was a comparison of dragon fruit juice and guava juice with iron tablets (p=0.013). It is hoped that young women regularly consume nutrition containing iron and Vitamin C as needed to prevent anemia in young women.
Pengaruh Pendapatan, Pengetahuan Investasi, dan Literasi Keuangan terhadap Minat Investasi Tabungan Emas di Pegadaian pada Gen Z di Wilayah Solo Raya Mulyadi, Aris Wahyu; Susanti, Ari
Jurnal Studi Inovasi Vol. 4 No. 1 (2024): Jurnal Studi Inovasi
Publisher : Inovbook

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52000/jsi.v4i1.149

Abstract

Investasi emas adalah investasi yang kemungkinan dirasa paling aman untuk kalangan masyarakat, karena dirasa paling aman untuk mengamankan uang dalam bentuk emas dari inflasi. Riset penelitian ini dilatari karena kurangnya minat masyarakat khususnya generasi Z di wilayah Solo Raya. Riset penelitian ini guna mengetahui berapa besar pengaruh Pendapatan, Pengetahuan dan Literasi Keuangan terhadap Minat Investasi Tabungan Emas di Pegadain oleh generasi Z. Penelitian ini menggunakan metode kuantitatif, dengan jumlah responden 120. Teknis analis data menggunakan analis regresi linier berganda dan menggunakan alat SPSS 25.0. Hasil Variabel Pendapatan tidak berpengaruh secara signifikan terhadap Minat Investasi Tabungan Emas. sedangkan pada Variabel Pengetahuan berpengaruh secara signifikan terhadap Minat Investasi Tabungan Emas, dan Variabel Literasi Keuangan tidak berpengaruh secara signifikan terhadap Minat Investasi Tabungan Emas.
Optimization of Extraction of Bioactive Compound from Pegagan Leaves Using Ethanol Solvent With Microwave-Assisted Extraction Method (MAE) Rohmah, Fira Ulvatur; Rahmawati, Atiqa; Rizkiana, Meta Fitri; Susanti, Ari
Journal of Biobased Chemicals Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.436 KB) | DOI: 10.19184/jobc.v2i1.119

Abstract

Treatment using natural ingredients in Indonesia is the main choice that is growing in society. This is because treatment with natural ingredients has relatively milder side effects compared to synthetic treatment. Therefore, further research is needed on natural ingredients that can be used as natural medicines, one of which is pegagan (Centella asiatica (L.)). Several studies have found bioactive compounds in pegagan that can be used as medicine by various methods. The author wants to know the optimal conditions for extracting pegagan bioactive compounds using the microwave-assisted extraction (MAE) method. This study used pegagan leaf size 40 mesh that had been dried. pegagan leaves were extracted using ethanol as a solvent with microwave power, solvent concentration, and extraction time as variables. Variable power 150 watts, 300 watts, and 450 watts. Variable solvent concentration 25%, 50%, and 75%. Variable extraction time for 5, 10, and 15 minutes. Analysis of the results of the study was carried out using total phenol analysis using the Folin-Ciocalten method. The research data obtained optimum operating conditions at 75% solvent concentration, 450-watt microwave power, and extraction time of 10 minutes with a total phenol content of 1251.410225 mg AGE/g sample.
Co-Authors Adyaksana, Rahandhika Ivan Ahmad Izzuddin Ainin Syukuria Putri, Ainin Syukuria ALYENSI, FATIYANI Alyensi, Fatiyani Yensi Amalia, Nuke Ansa, Ghifari Aulia Anugrah Windy Mustikarini, Anugrah Windy Apriliyani, Vika Arif Farida Arif Rahman Hakim Arinto Nugroho Asyari, Ismam Atik Lusia Atika Mima Amalin Atmaja, Ria Melina Bahari, Irwan Bekti Palupi Cari, Layas Christiawan Hendratmoko Budi Istiyanto Ida Ayu Kade Rachmawati Kusasih Damayanti Damayanti Damayanti, Rizki Putri Defriman Djafri Dewajani, Heny Dina Martha Hutapea Dodik Hartono Dwi Ernawati Dyah Ratna Wulan Elia Ardyan Elmukhsinur, Elmukhsinur Erdana, Rinata Lya Evelina, Tri Yulistyawati Fadhillah, Rizka Ummu Fadhlan Ramdhani, Alfin Wafiaadin FADMIYANOR, ISYE Fathunikmah, Fathunikmah Fatimah Azzahra Fawzy, Dwimay Febriani, Wike Suci Ginanjar Rahmawan, Ginanjar Harahap, Juraida Roito Hartatik Hidayati, Mutia Dewi Hindratni, Findy Ida Dwijayanti Ismunawan Ismunawan, Ismunawan Iswara, Mochammad Agung Indra Ivan, Johanes Kumrotin, Evi Laili LAILA, ANI Lestari, Diani Lestari, Tri Ayu Liliyan, Aditya Madani, Al Fitrah Putri Masritna, Erin Maya Ayu Riestiyowati Meta Fitri Rizkiana Mulyadi, Aris Wahyu Musyarifatillah, Nisa Ngatmini Ngatmini nikmah, Fathu Ningtiyas Firdayana Nurul Laili Octavia, Dewi Ika Oktavia, Dewi Ika Pardi, . Parega, Erwin Partini, Sri Permatasari, Septi Indah Prasetyo, Fidela Ghani Pratiwi, May Kurnia Qoriaini, Risqia Zalza Rahmalia, Meizy Rahman, Yessy Trisna Rahmawati, Amelia Umi Rahmawati, Atiqa Rantika, Reza Resti, Adinda Ria Estiana Rianto, Rahmad Isa Riestiyowato, Maya Ayu Riestyowati, Maya Ayu Rikah, Rikah Rikah, Rikah Rizki Fitria Darmayanti Rohmah, Fira Ulvatur Rosy, Alice Rumzi, Cindy Novita Rustam, M. Zul Azhri Rustam, Muh Zul Azhri Safira, Delfia Saharsin, Astuning Saharsini, Astuning Sakai, Kenji Sanomoto, Kenji Saputra, Era Trianita Saputre, Era Trianita Sari, Leni Nita Siska Helina, Siska Suade, Yuyun K. M. Sudahri Suhardiningsih, A.V. Sri Sumarno . Supardi, Nanang Triyono Susilawati, Elly Takwanto, Anang Tania, Sabiila Rahmat Tashiro, Yukihiro Trianita Saputra, Era Uthia, Rahimatul Vitaloka, Sannyta Dwi VITRIANI, OKTA Wardani, Anggraini Kusuma Wulandari, Bhineka Agustina Yanti . Yanty Maryanty, Yanty Yeni Aryani Yulfitria, Fauziah