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All Journal Jurnal Sains Dasar Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Indonesian Journal of Chemistry and Environment
Dini Rohmawati
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Materials Science & Nanotechnology

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Optimization of condensation reaction time between vanillin and p-nitroacetophenone in acid catalysts Indyah Sulistyo Arty Sulistyo Arty; Dini Rohmawati
Jurnal Sains Dasar Vol 3, No 1 (2014): April 2014
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (91.856 KB) | DOI: 10.21831/jsd.v3i1.2783

Abstract

This study was an experimental study aimed to obtain the optimal time in the synthesis of chalcone compounds through cross aldol condensation reaction. The starting materials used were vanillin, p-nitroacetophenone, and acid catalyst. The study began by reacting vanillin and p-nitroacetophenone in HCl catalyst and the flow of nitrogen. The optimalization of reaction time was done in some variation of time, 3 hours, 5 hours and 7 hours. The reaction products were recrystallized with solvents mixture aquades: ethanol (1:1). Recrystallization product then checked by TLC using mixed eluents n-hexane: ethyl acetate (4:1). The products of the study were powder with the appropriate weight range and yield of the reaction time (3 hours, 5 hours and 7 hours) was 0.16 g: 5.387%, 0.48 grams: 16.162% and 0.43 grams: 14.478%. the optimum time for this reaction was 5 hours.   Key words: condensation, vanillin, p-nitroacetophenone, acid catalyst
The Preparative Nonreflux Procedure on Disproportionation Reaction in Small-Scale Synthesis Rohmawati, Dini; Handayani, Sri; Budimarwanti, Cornelia; Sari, Dista Arum; Yuliyanti, Diana; Abdillah, Muchammad Ikmal; Pratiwi, Oktavia; Anasriah, Tria Novita
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.82418

Abstract

Reactions with nonreflux procedures are based on the mechanical impact energy to promote the transformation process of chemicals. The simple procedures are grinding-milling, microwave-assisted, and ultrasonic-assisted. Generally, the procedures were undergoing nonsolvent or solventless reaction conditions also in effective and efficient processes, which corresponds to the principles of green chemistry. In its development, disproportionation reaction could also be undergone by applying these methods. This article discussed the preparative procedures of nonreflux with grinding, shaking, ultrasonic-assisted, and microwave-assisted in disproportionation reactions, which later could be used as standard procedures according to green chemistry and sustainable development goals (SDGs).
Pendampingan Manajemen Kewirausahaan Melalui Pembuatan Eco Enzim dan Sabun Herbal Ramah Lingkungan dengan Memanfaatkan Limbah Rumah Tangga Rohaeti, Eli; Rohmawati, Dini; Priastomo, Yoga; Afikah, Adilah; Sasmi, Weni Tri; Goni, Nur Abdul; Joronavalona, Rasamimanana; Dianti, Sekar Paramitha Rizqy
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol. 9 No. 2 (2025): Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA
Publisher : Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpmmp.v9i2.78766

Abstract

The urgency of the Community Service Activities (PPM) that will be conducted is in accordance with the challenges faced by partners in the development of professional human resources for Advanced Indonesia. Specifically, family welfare requires further development through the provision of skills to women who are economically unproductive. The entrepreneurial spirit of women in the city of Yogyakarta, particularly mothers in Kampung Kuncen RT 21 RW 05, Pakuncen Village, Wirobrajan District, Yogyakarta City, is still relatively low. They require training to achieve independence, particularly in the field of green economy, in order to establish prosperous families by prioritizing environmental sustainability. The issue of domestic waste, which is the leftover vegetables and fruits produced by households, is also urgent. This waste is being disposed of in landfills or residential areas, which will contaminate the surrounding environment. Additionally, Yogyakarta is presently experiencing a waste disposal emergency. In reality, household waste, including unspent vegetables and fruits, can be repurposed as eco enzyme materials. These materials can be employed as air fresheners, cleansing agents, and as supplementary ingredients in the production of herbal soap. Furthermore, soap can be produced from cooking oil residue. The urgency of Community Service activities, particularly the issue of managing household waste (environmental aspect) and the issue of enhancing the abilities of women in assisting the family economy (economic aspect). Mentoring activities for the production of botanical soap and eco enzymes are proposed as a solution to these issues. The objective of the PPM activities is to enhance the comprehension and capabilities of women in the field of entrepreneurship by providing them with independence training through mentoring in the production of environmentally friendly herbal soap. This soap is made by utilizing used cooking oil as the primary ingredient and fruit and vegetable waste as raw materials for the production of eco enzymes, which are used as soap additives. PPM activities are intended to enhance Key Performance Indicator (KPI) 3 UNY, which refers to lecturers who engage in activities outside of the classroom. Furthermore, four students who are participating in this PPM activity have expertise in the preparation and management of a PPM activity. This will enhance the achievement of KPI 7, which is a collaborative and participatory class.
Co-Authors Abdillah, Muchammad Ikmal Afikah, Adilah Anasriah, Tria Novita Cornelia Budimarwanti Dianti, Sekar Paramitha Rizqy Eli Rohaeti Goni, Nur Abdul Handayani, Sri Indyah Sulistyo Arty Sulistyo Arty Joronavalona, Rasamimanana Pratiwi, Oktavia Priastomo, Yoga Sari, Dista Arum Sasmi, Weni Tri Yuliyanti, Diana