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All Journal VALENSI Jurnal Pendidikan Kimia Jurnal Pendidikan IPA Indonesia Prosiding Pendidikan Sains INDONESIAN JOURNAL OF PHARMACY Jurnal Penelitian Pendidikan IPA (JPPIPA) PAEDAGOGIA Journal of Economic, Bussines and Accounting (COSTING) Indonesian Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) SAP (Susunan Artikel Pendidikan) SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Jurnal Abdi Masyarakat Indonesia

Elfi Susanti V. H.

Bachelor Program Of Chemistry Education, Faculty Of Teacher Training And Education, Universitas Sebelas Maret, Indonesia Jl.Ir Sutami No 36 A, Surakarta, Central Java, Indonesia

Author-ID : 1335937

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences

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Misconceptions of High School Students in Salt Hydrolysis Topic Using a Three-Tier Diagnostic Test (TTDT) Tri Prianti; Elfi Susanti VH; Nurma Yunita Indriyanti
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This study aims to find out whether high school students in Surakarta have misconceptions in salt hydrolysis material and to find out which concept is the most misconception experienced by high school students in Surakarta in salt hydrolysis material. This study used a descriptive approach. Data collection techniques using data triangulation technique from the results of the Three-Tier Diagnostic Test (TTDT), formative tests, and interviews. The sample used in this study was determined using a purposive sampling technique. Based on the research conducted, high school students in Surakarta experienced misconceptions in salt hydrolysis material as much as 36.75%, 35.94% Scientific knowledge, 15.63% lack of knowledge, and 10.90% error. Most misconceptions experienced by high school students in Surakarta on salt hydrolysis material occur in sub concepts: a) conclude the acid-base properties shown from salt solutions (49.91%), b) calculate the pH of the salt solution (39.15), c) analyze the reaction salt hydrolysis (37.21%), d) analyze the concept of hydrolysis that occurs in solution (35.98), e) determine the types of hydrolysis of salt (21.87%).

Analysis of High School Students’ Argumentation Ability in the topic of Buffer Solution Ninda Dwi Cahya Devi; Elfi Susanti VH; Nurma Yunita Indriyanti
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Argumentation is scientific discourse in science learning that is used as a link between knowledge from an environment and concepts in science learning. Through argumentation skills can be controlled student understanding in connecting facts with concepts in learning. This study aims to analyze students' argumentation ability on buffer solution subject. Students' argumentation ability is divided into 4 levels; level 1 (claims), level 2 (claims with data), level 3 (claims with data and one rebuttal), and level 4 (claims with more than one rebuttal). Data analysis was done by a qualitative descriptive method using a case study method. The case study method was chosen so that a study of 92 students who were research participants could be carried out in depth and comprehensive. The results obtained that the students' argumentation ability was at level 1 and level 2 argumentation. This shows that students' argumentation skills are still at low and medium levels. The results of this study can be used as a basis for improving the quality of teaching and further research.

Phytochemical Screening of Honey Pineapple Peel Extract and Its Application as an Antibacterial Additive in Dish Soap Formulation Elfi Susanti VH; Sri Mulyani; Sri Retno Dwi Ariani; Suryadi Budi Utomo; Bayu Antrakusuma
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 1 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i1.45444

This research aims to scientifically develop bioactive compounds from honey pineapple peel and develop a dish soap formulation with extract additives of honey pineapple peel that can be antibacterial. The research was conducted in stages, namely process of extracting honey pineapple peel was carried out by the maceration method using 96% ethanol as a solvent, phytochemical screening of the ethanol extract of honey pineapple peel was done to determine the class of compounds contained in the extract, and application of honey pineapple peel extract in dish soap formulation was to obtain a dish soap formulation with optimal antibacterial activity. Testing the ability of dish soap products to inhibit S. aureus bacteria was performed by the method of filter paper disc diffusion. The results revealed that the ethanol extract of honey pineapple peel contained alkaloids, flavonoids, tannins, and saponins. The ethanol extract of honey pineapple peel has been applied in a dish soap formulation and tested for the antibacterial activity of S. aureus. Antibacterial test results showed that the dish soap formulation with the addition of 5% pineapple peel extract provided strong antibacterial activity, indicated by a precise zone formation of 12.60 mm

Peran Keterampilan Berpikir Kritis Siswa di Sekolah Menengah Pertama pada Materi Sistem Pencernaan Juniar Fauziatul Azizah; Muzzazinah Muzzazinah; Elfi Susanti
SAP (Susunan Artikel Pendidikan) Vol 6, No 2 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

Critical thinking skills are higher order thinking skills that should be developed in schools, in line with the objectives of the 2013 revised curriculum which prioritizes 21st century skills as a provision for future life. This study aims to analyze and classify the level of students in constructing critical thinking skills. The research1subjects1were 28 students of class VIII B SMP Negeri 6 Ngawi for the academic year 2020/2021. Data collection was carried out through interviews and critical thinking skills tests. The method used was descriptive qualitative. The critical thinking skills test instrument was 5 essay questions consisting of 5 indicators. The results of the critical thinking skills test were declared valid in terms of the1results1of1validation, level of difficulty, differentiation, and reliability. The analysis was carried out on the student test results on each indicator and categorized into five critical thinking categories consisting of very good (VG), good (G), medium (M), low (L), and very low (VL). The results1showed that1the highest percentage of indicators of critical thinking was obtained by 32% which were indicators of tactical strategy setting. Critical thinking indicators obtained by the lowest percentage of 8% were indicators of building basic skills. This proves that critical thinking skills need to be further trained so that they can be improved in science learning and advance in the field of education.

Question Analysis in 11th Grade Chemistry Book in Term of Critical Thinking Indicators Imam Sri Nugroho; Sri Mulyani; Elfi Susanti
PAEDAGOGIA Vol 24, No 2 (2021): PAEDAGOGIA Jilid 24 No 2 (2021)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/paedagogia.v24i2.55137

This study aims to determine the indicators of critical thinking skills that developed in the questions that contained in the XI grade high school chemistry textbook and to determine the critical thinking level of the questions developed in the XI high school chemistry textbook. This study is a qualitative research using descriptive documentation analysis method or content analysis. The document that analyzed are questions in the chemistry textbook used by eleventh grade students at four Senior High Schools in Surakarta. The sampling technique that used is multistage sampling and data validation using observer triangulation. The results showed that the critical thinking indicators that appeared on the questions from the textbooks analyzed included basic clarification, appearing at 100%; bases for a decision appearing at 0%; inference appearing at 88.9%; Advanced clarification appearing at 38.9%; supposition and integration appearing at 31.5%; auxiliary ability appearing at 40.7%. Meanwhile, based on the Critical Thinking Level (TBK), the questions included in the TBK 0 group are 0%; TBK 1 are 29.6%; TBK 2 are 68.5%; TBK 3 are 1.8%.

PEMBERDAYAAN IBU-IBU PKK MELALUI PELATIHAN DAN PENDAMPINGAN PRODUKSI SABUN DAN DETERJEN Elfi Susanti VH; Endang Susilowati
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 4, No 2 (2016)
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v4i2.4570

Improvement of social welfare can be done with a variety of approaches, by empowering the community. Empowering ibu-ibu PKK RT 03 and RT 04 in Joho Mojolaban through training and mentoring the production of soaps and detergents. This activity is done in order to enhance the dignity of society who are in a state of not being able to rely on his own strength. Objectives and specific targets to be achieved in this activity is ibu-ibu PKK RT 03 and RT 04 interested and motivated to entrepreneurship, formed group of PKK members who become economically independent by producing soaps and detergents, as well as realize the PKK RT 03 and RT 04 more powerful, more productive, creative, and responsive. To achieve these objectives, the team of Chemical Education FKIP UNS has provided counseling, training and assistance ibu-ibu PKK in producing soaps and detergents. Ibu-ibu PKK is given knowledge about entrepreneurs and home-based business opportunities, as well as basic principles of production. Ibu-ibu PKK were also given training on how to make soap and detergents, as well as product packaging and marketing techniques.Keywords: soaps, detergents, counseling, training, production

PENINGKATAN KECAKAPAN HIDUP ANAK PANTI ASUHAN YATIM DI KARANGANYAR MELALUI PELATIHAN WIRAUSAHA CISTIK SAYURAN Endang Susilowati; Sri Retno Dwi Ariani; Elfi Susanti VH
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 6, No 1 (2017)
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v6i1.20886

The orphanage is a place to accommodate, nurture and care for orphans and the poor. The existence of this orphanage becomes an important part for the continuity of education foster children. In addition to formal education, non-formal education is required in the form of certain skills to be provision of life skills. Based on the results of the survey of foster children living in Panti Asuhan Yatim Putri Aisyiyah and Panti Asuhan Yatim Putra Muhammadiyah in Karanganyar have sufficient time to spare and they do not have the provision of skills that are meaningful for his life. Therefore they need to be given life skills provision in the preparation of entrepreneurial skills.For the realization of orphanage children with provision of suffice life skills, the team of community service from FKIP UNS provides training of entrepreneurs vegetables cheese stick. The training is done through lacturing and practicing. The subject of lecturing is the theory of vegetable cheese stick entrepreneurship. Further practicing on how to produce vegetables chesee stick with a variety of vegetables are used. After the competent participants make the products that have been taught, then the team of servants accompany in the packaging and marketing.Based on the implementation of the training vegetable cheese stick entrepreneurship and evaluation directly and through questionnaire, the activity was greeted positively by all participants. Participants actively participate in all activities and are eager to follow up with production and marketing. This entrepreneurship training has increased life skills for foster children in Panti Asuhan Yatim Putri Aisyiyah and Panti Asuhan Yatim Putra Muhammadiyah.Keywords: Life Skills, Orphanage, Entrepreneurship, Vegetables Cheese stick

Strategi Peningkatan Daya Saing Kopi Liberika di Kabupaten Kepulauan Meranti Nurman Nurman; Elfi Susanti; Lintang Nur Agia
COSTING : Journal of Economic, Business and Accounting Vol 3 No 2 (2020): COSTING : Journal of Economic, Business and Accounting
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Marketing management is one of the main activities carried out by the company to maintain the sustainability of the company, to develop, and to make a profit. The purpose of this study is to compare the traditional marketing system that is already running with the marketing partnership formed in aspects of marketing channels, marketing practices and marketing efficiency. The analysis used in this research is to use marketing margins. The results of this study indicate that there are three marketing channels available in the liberika coffee industry in the Meranti islands. Marketing practices so far have not been used by farmers, this can be seen from the profit margin obtained by large traders amounting to 1.47%. And from the efficiency of liberika coffee marketing is far from efficient because it has to go through a long process before reaching the final consumer. Keywords: Marketing Channels, Marketing Management, competitiveness

Improved Synthesis of 2',6'-Dihydroxy-3,4-dimethoxy Chalcone by Grinding Technique to Synthesize 5-Hydroxy-3',4'-dimethoxy Flavone Elfi Susanti VH; Sabirin Matsjeh; Mustofa Mustofa; Tutik Dwi Wahyuningsih
Indonesian Journal of Chemistry Vol 14, No 2 (2014)
Publisher : Universitas Gadjah Mada

5-hydroxy-3',4'-dimethoxy flavone can be efficiently synthesized in two steps via the formation of 2',6'-dihydroxy-3,4-dimethoxy chalcone with good results. 2',6'-dihydroxy-3,4-dimethoxy chalcone as reactants for synthesis of flavones was prepared through Claisen-Schmidt condensation reaction between 2,6-dihydroxyacetophenones,3,4-dimethoxybenzaldehyde and solid NaOH in mortar for 15 min. The yield of the product (70%) is higher than conventional method (65%). This chalcone then oxidatively cyclized with iodine to form 5-hydroxy-3',4'-dimethoxy flavone (yield 62%). Compounds synthesized were characterized by spectroscopic (IR, 1H-NMR, and 13C-NMR).

SYNTHESIS, CHARACTERIZATION AND ANTIOXIDANT ACTIVITY OF 7-HYDROXY-3',4'-DIMETHOXYFLAVONE Elfi Susanti VH; Sabirin Matsjeh; Tutik Dwi Wahyuningsih; Mustofa Mustofa; Tri Redjeki
Indonesian Journal of Chemistry Vol 12, No 2 (2012)
Publisher : Universitas Gadjah Mada

Synthesis of flavones and their derivatives has attracted considerable attention due to their significant pharmaceutical effects. 7-hydroxy-3',4'-dimethoxyflavone has been synthesized and its antioxidant activity has been investigated. Flavone was synthesized by oxidative cyclization of chalcone. 2',4'-dihydroxy-3,4-dimethoxychalcone was prepared by Claisen-Schmidt condensation of 2,4-dihydroxyacetophenones with 3,4-dimethoxybenzaldehydes in the presence of aqueous solution of sodium hydroxide and ethanol at room temperature. Oxidative cyclization of 2',4'-dihydroxy-3,4-dimethoxychalcone was done by using I2 catalyst in DMSO to form 7-hydroxy-3',4'-dimethoxyflavone. The synthesized compounds were characterized by means of their UV-Vis, IR, 1H-NMR and 13C-NMR spectral data. The compound was tested for their antioxidant activities by DPPH method.

Co-Authors Adi, Yulia Kristi Agustin Wulandari Anastasia Diaz Pramesti Anastasia Diaz Pramesti Ari Syahidul Shidiq Ashadi, . Asna, Lilis Sofiyatul Aufa Vib Mitsalina Bayu Antrakusuma Catur Saputro, Agung Nugroho Dwi Retno Sari Endang Susilowati Endang Susilowati Fajar Rakhman Wibowo Hartantia, Restika Maulidina Iis Alviah Imam Sri Nugroho Juniar Fauziatul Azizah Lestari, Nova Dwi Lintang Nur Agia Luthfiana, Eva Magdalena, Octaviany Maria Ulfa Martini, Kus Sri Melati Kusuma Wardani Mohammad Masykuri Muhammad Hizbul Wathon Mulatsari, Desi Mulyani, Bakti Mulyani, Sri Mustofa Mustofa Muzzazinah Muzzazinah Nastiti, D. Ninda Dwi Cahya Devi Nurma Yunita Indriyanti Nurma Yunita Indriyanti Nurma Yunita Indriyanti Nurman Perdana, R. Pramesthi, Hilda Nita Rahardjo, S. B. Rahmawati, Ani Ramandika, Muhammad Gunawan Dwi Redjeki, Tri Redjeki, Tri Redjeki, Tri Sabirin Matsjeh Safitri, Nadia Indri Salim, Eko Nur Samodra, Imam Saputro, Agung Nugroho Catur Saputro, Sulistyo Sastika, Agasta Ria Sentot Budi Raharjo Setiawan, Dwi Arief Setiyani Setiyani Sri Mulyani Sri Mulyani Sri Mulyani Sri Mulyani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Retno Dwi Ariani Sri Yamtinah Sugiharto, Sugiharto Sulistyo Saputro Suryadi Budi Utomo Suryadi Budi Utomo Suryadi Budi Utomo Suryani, Adik Annisa Fitri Suryanto, Eko Tonang Dwi Ardyanto Totiana, Fian Tri Prianti Tri Redjeki Tutik Dwi Wahyuningsih Utami, Budi Utomo, Suryadi Budi Widiastuti Agustina Eko Setyowati Wulandari, Lilis Yandi Syukri Zulkarnaen, Rizmoon Nurul

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