Article Per Year (5 Year)
p-Index From 2021 - 2026
0.983
P-Index
This Author published in this journals
All Journal VALENSI EKSAKTA: Journal of Sciences and Data Analysis JURNAL KIMIA SAINS DAN APLIKASI agriTECH Majalah Ilmiah MOMENTUM BIOMA Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia Jurnal Aplikasi Teknologi Pangan Jurnal Biologi Tropis PROSIDING SEMINAR NASIONAL Jurnal Teknologi Pangan dan Hasil Pertanian Akta Kimia Indonesia BERNAS: Jurnal Pengabdian Kepada Masyarakat Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Jurnal Rekayasa elektrika Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Sri Hartini
Universitas Kristen Satya Wacana
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

Published : 22 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 22 Documents
Search

 1   2   3 
Optimasi Kandungan Gizi Tepung Ubi jalar (Ipomoea batatas L.) Terfermentasi Ditinjau dari Dosis Penambahan Inokulum Angkak Serta Aplikasinya dalam Pembuatan Mie Basah Yosia Adi Susetyo; Sri Hartini; Margareta Novian Cahyanti
Jurnal Aplikasi Teknologi Pangan Vol 5, No 3 (2016): Agustus 2016
Publisher : Indonesian Food Technologists

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (725.872 KB) | DOI: 10.17728/jatp.172

Abstract

Ubi jalar memiliki potensi sebagai bahan pangan berbasis sumber daya lokal yang dapat dimanfaatkan menjadi produk tepung ubi jalar terfermentasi. Tujuan penelitian ini adalah menghasilkan tepung ubi terfermentasi yang optimal ditinjau dari besarnya konsentrasi substrat ubi jalar dan penambahan inokulum angkak. Fermentasi dilakukan menggunakan inokulum angkak dengan berbagai dosis konsentrasi yaitu 0%, 5%, 10%, 15% dan 20%.  Analisis terhadap tepung ubi jalar terfermentasi meliputi pengukuran kadar air, kadar abu, karbohidrat, protein, lemak, serat, derajat asam, aktivitas antioksidan serta analisa organoleptik.Tepung dari nisbah yang paling optimal diaplikasikan dalam pembuatan mie basah dengan subtitusi tepung ubi jalar terfermentasi sebesar 10%, 20%, 30%, 40% dan 50%. Hasil penelitian menunjukkan penambahan inokulum angkak dengan dosis 5% menghasilkan fermentasi yang optimal, dengan kandungan kadar air sebesar 7,19%, kadar abu 2,44%, karbohidrat 49,77%, protein 1,62%, lemak 1,38%, serat kasar 4,59%, derajat asam 9,27 NaOH 0,1 N/100 g dan memiliki aktivitas antioksidan yang mampu menghambat radikal bebas sebesar 48,12%. Uji organoleptik dengan 25 panelis menunjukkan bahwa produk mie basah yang paling disukai adalah dari subtitusi tepung ubi jalar terfermentasi sebesar 10%.
POTENSI KENIKIR (COSMOS CAUDATUS) SEBAGAI LARVASIDA NYAMUK AEDES AEGYPTI INSTAR IV November Rianto Aminu; Alfon Pali; Sri Hartini
Jurnal Biologi Tropis Vol. 20 No. 1 (2020): Januari - April
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (534.381 KB) | DOI: 10.29303/jbt.v20i1.1489

Abstract

Abstrak: Resistensi temephos (abate) sebagai larvasida telah terjadi di Jawa Tengah sejak tahun 2007 dan ditahun 2017 Jawa Tengah tercatat sebagai provinsi dengan jumlah kasus DBD terbanyak ketiga secara nasional. Oleh karena itu, penelitian ini bertujuan untuk memanfaatkan ekstrak daun kenikir (Cosmos caudatus) sebagai larvasida pengganti temephos. Proses penelitian dimulai dengan ekstraksi fraksinasi, kemudian dilanjutkan dengan screening fitokimia dan uji larvasida menggunakan metode yang direkomendasikan oleh WHOPES dengan mengamati mortalitas larva nyamuk A. aegypti pada jam ke 24, 48 dan 72 pada berbagai konsentrasi larutan uji (600, 800, 1000, 1200, 1400, 1600, dan 1800 ppm). Data mortalitas larva dianalisis dengan menggunakan Rancangan Acak Kelompok (RAK) subsampling. Perbandingan antar perlakuan diuji dengan uji Beda nyata Jujur (BNJ) dengan tingkat kebermaknaan 5%. Analisa probit pada data mortalitas menghasilkan nilai dosis efektif LC50. Hasil penelitian menunjukan diantara ketiga fraksi, ekstrak kenikir fraksi heksan memiliki efek larvasida terbaik (mortalitas 71,67%) dengan LC50 sebesar 1762 ppm pada waktu paparan 72 jam. Golongan senyawa kimia yang menyebabkan efek larvasida ini adalah alkaloid, terpenoid, dan flavonoid. Walaupun ekstrak fraksi heksan tanaman ini memiliki efek larvasida, potensi pengembangan tanaman ini sebagai pengganti temepos kecil dikarenakan nilai LC50 yang tinggi pada waktu paparan yang lama.Kata kunci: Larvasida; temephos; resistensi; Cosmos caudatus; potensiAbstract: Temephos resistance as larvicide has occurred in Central Java since 2007 and in 2017 Central Java was recorded as the 3rd highest dengue cases in Indonesia. Hence, this study attempts to use extract of Cosmos caudatus as temephos substitute. The study start with fraction extraction of dried C. caudatus leaf followed by phytochemical screening of the extract and larvicide assay was carried out using method recommended by WHOPES by observing the mortality of A. aegypti larvae at 24, 48, and 72 hours on various extract concentration (600, 800, 1000, 1200, 1400, 1600, and 1800 ppm). The mortality data was analyzed using Randomized Block Design (RBD) subsampling (P<0,05). Probit analysis on mortality data result in the LC50. The result showed the most effective fraction is hexane fraction (mortality 71,67%) with LC50 ­1762 ppm at 72 hours exposure time. The active compound in the hexane fraction were alkaloid, terpenoids, and flavonoids. Even though the hexane fraction extract has the most larvicidal effect, this extract has low potential to developed as replacement to temephos because the LC50 was high and longtime exposure  Keywords: Larvicide; temephos; resistance; Cosmos caudatus; potential
PASTA GIGI PENCEGAH GIGI BERLUBANG BERBAHAN AKTIF MIKRO HIDROKSIAPATIT (HAp) DARI LIMBAH KERABANG TELUR PASAR RAYA KOTA SALATIGA Imelda Wadu, Intan Karlina Rohaini, Agung Rimayanto Gintu dan Sri Hartini
PROSIDING SEMINAR NASIONAL 2018: PROSIDING SEMINAR NASIONAL
Publisher : PROSIDING SEMINAR NASIONAL

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

Abstract

Hidroksiapatit adalah senyawa turunan kalsium yang dapat digunakan untuk menggantikan bagian tulang dan gigi yang rusak. Pada penelitian ini hidroksiapatit disintesa dari kerabang telur unggas untuk diaplikasikan ke dalam pasta gigi untuk melindungi lapisan email gigi dari pengikisan dan menutupi lobang berukuran mikro pada gigi. Dihasilkan 3 varian pasta gigi berbahan aktif HAp dengan rasio perbandingan HAp:CaCO3 (w/w) sebesar 1:1, 1:3, dan 3:1 w/w. Dilakukan uji organoleptik dan uji fisikokimia pada pasta gigi meliputi uji pH, daya sebar dan kestabilan. Pasta gigi dengan varian HAp:CaCO3 sebesar 1:1 menghasilkan karakter fisikokimia sebagai berikut pH 7, Daya sebar 1,6211 gcms-1. Pasta gigi dengan varian HAp:CaCO3 sebesar 1:3 menghasilkan karakter fisikokimia sebagai berikut pH 7, Daya sebar 2,1234 gcms-1. Pasta gigi dengan varian HAp:CaCO3 sebesar 1:3 menghasilkan karakter fisikokimia sebagai berikut pH 7,7; Daya sebar 1,2424 gcms-1. Pada uji organoleptik meliputi aroma, tekstur dan ketampakan, responden menunjukan respon relatif suka. Pada uji kestabilan, pasta gigi varian 1:1 menunjukkan relatif stabil pada suhu 25, 50 dan 80oC. Berdasarkan uji organoleptik terhadap semua varian pasta gigi, respon secara keseluruhan menujukkan relatif suka.Kata kunci: Hidroksiapatit, kerabang telur, uji daya sebar
Pemberdayaan Masyarakat Berbasis Kearifan Lokal Melalui Pelatihan Pembuatan Hiasan Bunga Dari Kelobot Jagung Sri Hartini; Novenda Pramesti Ayuningtyas; Fidela Novitasari; Stelly Revina Prabowo; Dwi Novianti; Bakti Kresno Wibowo
Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Vol 1 No 1 (2020)
Publisher : Universitas Kristen Satya Wacana Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (482.795 KB) | DOI: 10.24246/jms.v1i12020p80-88

Abstract

Community service activities are carried out in Kalkurmo Village, Beringin District, Semarang Regency. This activity is aimed at empowering the community through processing the jaging husk waste into decorative products with economic value. Activities are carried out in the form of training and mentoring until they become products. So far, corn husks, which have been used only as animal feed or baked goods, can actually be processed into decorative products with economic value. This activity is expected to motivate the people of Kalikurmo Village to use waste materials into products of economic value so that they can improve community welfare.
Alat Optimasi Suhu dan Kelembaban untuk Inkubasi Fermentasi dan Pengeringan Pasca Fermentasi Gunawan Dewantoro; Sri Hartini; Agustinus Hery Waluyo
Jurnal Rekayasa Elektrika Vol 11, No 3 (2015)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2106.721 KB) | DOI: 10.17529/jre.v11i3.2245

Abstract

Fermentation optimizer aids have been common around us in both laboratories and home industries. However, these aids only served as incubator and sometimes cannot optimize the fermentation process due to the increasing humidity in a closed box. Nevertheless, adding holes to the box will not lead to a better result since unwanted bacterias come into the box. Therefore, a fermentation optimizer aids has been realized with two separate functions, namely fermentation incubator and post-fermentation dryer. This kit works in the temperature ranging from 35 degree C – 120 degree C, and equipped with two exhaust fans to minimize the humidity in both fermentation and dryermodes. The SHT11 was utilized to measure the temperature and relative humidity. A ceramic heater was used to warm up the air inside the box as desired by users. As the user interface, keypad and character LCD were used. ArduinoMega2560 serves as the main controller of the whole system. Compared to the conventional fermentation process, this kit works 9 hours faster and the fermentation objects are perfectly fermented.
Antibacterial Activity and Chemical Composition of Red Peacock Flower (Caesalpinia pulcherrima L.) Leaf Essential Oil Novena Risnalani Rintank Constani; Hartati Soetjipto; Sri Hartini
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2556.37 KB) | DOI: 10.14710/jksa.22.6.269-274

Abstract

Peacock flower (Caesalpinia pulcherrima L.) leaves contain essential oils which can be used as an ingredient in cosmetics, perfume, aromatherapy, medicine, and supplements. The study was conducted to obtain essential oils from peacock flower leaves and determine the antibacterial activity against gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) and gram-negative (Escherichia coli and Pseudomonas aeruginosa). Antibacterial activity test was carried out by the agar diffusion method, using paper discs. Measurements were made for the inhibition zone diameter (IZD) that appeared, while the essential oil component was analyzed using GC-MS. The results showed that the peacock flower leaves (C. pulcherrima) had a moderate to strong antibacterial effect at a concentration of 7.5%-20% against gram-positive bacteria (B. subtilis and S. aureus) and gram-negative bacteria (E. coli and P. aeruginosa). Gram-negative E. coli bacteria are relatively more sensitive to peacock flower leaf essential oil compared to other test bacteria. Peacock flower (C. pulcherrima) leaf essential oil is composed of 7 main components namely β-Cubebene 33.87%; Caryophyllene 23.00%; γ-Elemene 13.18%; α-Pinene 10.96%; Cadina-1(10),4-diene 10.20%; Copaene; 7.09%; β-Pinene 1.70%.
Profil Fisiko-Kimia Minyak Kulit Batang Pulosari (Alyxia reinwardtii Bl.) dan Aktivitas Antioksidannya Franciska Alvina; Hartati Soetjipto; Sri Hartini
Akta Kimia Indonesia Vol 8, No 1 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v8i1.13856

Abstract

Pulosari bark is one part of the plant that has medicinal properties and a distinctive aroma, it is widely used in various herbal recipes in Indonesia. The purpose of this study was to determine the yield, Physico-chemical properties, and antioxidant power of Pulosari bark oil. Based on the research that has been done, the yield of Pulosari bark oil by maceration method using n-hexane produces an average oil of 2.658 ± 0.098%. The Physico-chemical properties of the oil include density, acid number, peroxide number, and saponification number respectively are 0.98±0 g/mL; 92.875±4.954 Mek O2/kg; 11.214±0.776 mg KOH/g; and 105.678±12.921 mg KOH/g. The most dominant composition of Pulosari stem bark oil compounds are Cyclopentadecanone, 2-hydroxy- (25.97%); Hexadecanoic acid (14.47%); Ethyl linoleate (9.70%); 2H-1-Benzopyran-2-one (9.52%); and 1,2-Benzenedicarboxylic acid, mono(2-Ethylhexyl) ester (8.34%). The antioxidant activity of the oil tested with DPPH resulted in an IC50 value of 296,700 g/mL and was categorized as very weak.
Effect of Phosphate Addition and Exposure of Micro Waves on Comparatives Ca/F in Gipsum Waste: Preliminary Study of Hydroxyappatite Synthesis (HAp) from Ceramics Gypsum Industry Waste Dewantoro Dewantoro; Margareta Novian Cahyanti; Sri Hartini
Jurnal Kimia Sains dan Aplikasi Vol 21, No 4 (2018): volume 21 Issue 4 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2981.541 KB) | DOI: 10.14710/jksa.21.4.218-223

Abstract

This study aims to conduct an initial study of hydroxyapatite synthesis from ceramic gypsum waste. The parameters of the synthesis process carried out were variations in the time of the hydrothermal process namely 10, 20, 30, 40 and 50 minutes. The time variation was studied to study the effect of time on the hydroxyapatite character of gypsum waste. The initial synthesis process was conducted by looking at the comparison of Phosphate and Calcium levels in gypsum. In this study the results of the highest Phosphate levels obtained were 0.607% in the 10th  minute, while the largest Calcium levels were obtained in the 30th minute which was 0.171%. The treatment in the 30th minute gave the most optimal difference in effect which was 0.413. FTIR results showed the emergence of hydroxyapatite peaks namely –OH, PO43- and Ca-O, as well as the increase in the intensity of the peak of gypsum powder before treatment and after treatment. While the XRD results strengthened the presence of hydroxyapatite in gypsum with the presence of high peaks at 2θ = 31.08°; 32.14° and 33.45° respectively which indicated the presence of hydroxyapatite. While the main impurities in the synthesized hydroxyapatite are carbonates identified from FTIR results.
Menginisiasi Perubahan: Meningkatkan Kesadaran Siswa dalam Pengelolaan Sampah Dapur dan Plastik di SMA Kartika III-1 Banyubiru Kabupaten Semarang Margareta Novian Cahyanti; Sri Hartini; Dewi Kurnianingsih Arum Kusumahastuti; Alifia Dewi Safira; Pandu Krisnawan
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v5i1.7664

Abstract

Saat ini, tingkat kesadaran warga untuk membuang sampah pada tempatnya semakin tinggi. Kecepatan pengumpulan dan pengelolaannya tidak seimbang menyebabkan semakin besarnya volume sampah. Untuk dapat meningkatkan pengelolaan sampah, kesadaran produsen sampah tingkat rumah tangga untuk memulai pengelolaan sampah perlu dimunculkan. Penyadaran setiap anggota keluarga termasuk anak-anak untuk melakukan sortir sampah adalah langkah penting dalam upaya menjaga lingkungan dan menerapkan pengelolaan sampah yang berkelanjutan. Pengabdian pada masyarakat ini bertujuan untuk mengajak siswa untuk berpartisipasi aktif sebagai agen perubahan pengelolaan sampah khususnya siswa SMA Kartika III-1 Banyubiru. Kegiatan ini terdiri dari tahap persiapan, penyuluhan dan pameran dan diakhiri dengan tahap evaluasi. Kegiatan ini memberikan pengetahuan tentang bagaimana melakukan sortir sampah. Siswa mampu mempraktekkan sortir sampah. Siswa juga memperoleh pengetahuan tentang pemanfaatan sampah menjadi produk yang mempunyai nilai jual tinggi.
Physicochemical Properties of Yoghurt Analog from Peanut and Soy Milk Dewi Kurnianingsih Arum Kusumahastuti; Karina Bianca Lewerissa; Margareta Novian Cahyanti; Sri Hartini; Rifka Dwi Natalia; Yulia Frida Nugrahani
Jurnal Penelitian Pendidikan IPA Vol 11 No 2 (2025): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i2.10058

Abstract

The global demand for plant-based dairy alternatives is driven by health, environmental, and food allergy or intolerance concerns.  This movement has promoted plant-based yoghurts, which are nutrient-rich and non-dairy. This study examines the physicochemical and sensory characteristics of yogurts made from peanut milk and soy milk, both with and without the presence of filler, a prebiotic polysaccharide. Peanut milk yogurt exhibited a greater fat content of 11.2% wb, protein levels at 6.2% wb, and increased viscosity when compared to soy yogurt. However, soy yogurt exhibited elevated microbial loads (1.5 × 10¹¹ CFU/mL) and protein content when supplemented with inulin, suggesting improved fermentation activity. Both yogurts displayed pH levels appropriate for consumption (4.1–4.6), with peanut milk yogurt demonstrating a marginally higher acidity compared to soy yogurt. The addition of filler had a notable effect on the sensory profile, enhancing texture, taste, and overall acceptability for both peanut milk yogurt and soy yogurt. It is noteworthy that filler-enriched peanut milk yogurt exhibited diminished microbial loads and decreased viscosity, probably as a result of unutilized carbohydrate content and the presence of inhibitory metabolites from fermentation. Proximate analysis indicated that peanut milk yogurt has the potential to function as an effective plant-based yogurt alternative, exhibiting quality comparable to soy yogurt. Organoleptic testing revealed a clear consumer preference for formulations supplemented with inulin, resulting in ratings ranging from "like slightly" to "like extremely." This thorough examination offers significant perspectives on the possibilities of legume-based yogurts in addressing the increasing consumer interest in healthy, plant-derived dairy substitutes
Co-Authors Agustinus Hery Waluyo Alfon Pali Alifia Dewi Safira Anik Haryani Asep Mufti Kurniawan Bakti Kresno Wibowo Dewantoro Dewantoro Dewi K.A. Kusumahastuti Dewi KA. Kusumahastuti Dewi Kurnianingsih Arum Kusumahastuti Dwi Novianti Fidela Novitasari Franciska Alvina Gintu, Agung Rimayanto Gloria Virginia Gunawan Dewantoro Hartati Soetjipto Herman Yoseph Sriyana Herman Yoseph Sriyana Imelda Wadu, Imelda Irma Ayuningtyas Jose DM. Yonggulemba Karina Bianca Lewerissa Lucia Devi Danriani Margareta N. Cahyanti Margareta Novian Cahyanti Margareta Novian Cahyanti Mutiara Nur Alfiah November Rianto Aminu Novena Risnalani Rintank Constani Novenda Pramesti Ayuningtyas Pandu Krisnawan Rifka Dwi Natalia Salenussa, Marchelia Welma Sari Purnavita Silvia Andini Silvia Andini Stelly Revina Prabowo Tirza W. Brotosudarmo Yohanes Martono Yosia Adi Susetyo Yulia Frida Nugrahani Yulinda Eka Ayu Rukmawati