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All Journal Acta Chimica Asiana Jurnal Pijar MIPA Makara Journal of Science UNESA Journal of Chemical Education Jurnal Pengabdian Inovasi Masyarakat Indonesia Darma Diksani: Jurnal Pengabdian Ilmu Pendidikan, Sosial, dan Humaniora
Ningsih, Baiq Nila Sari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Free-Radical Scavenging Activity and Total Phenolic Compounds of Red and Green Poinsettia Leaves (Euphorbia pulcherrima Willd.) from Lombok Island Muliasari, Handa; Sopiah, Baiq; Yuanita, Emmy; Ningsih, Baiq Nila Sari
Makara Journal of Science Vol. 27, No. 4
Publisher : UI Scholars Hub

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

Abstract

To determine the free-radical scavenging activity and total phenolic content of the ethanol extract of Poinsettia leaves (Euphorbia pulcherrima Willd.) from Lombok Island, we used the 1,1-diphenyl-2-picrylhydrazyl method and expressed the total phenolic content as gallic acid equivalent (GAE) per gram of ethanol extract. The results show the strong antioxidant activity (79.77 ppm) of the ethanol extract of red Poinsettia leaves and the moderate antioxidant activity of green Poinsettia leaves (118.350 ppm). The ethanol extracts of red and green Poinsettia leaves possessed an average of 63.276 ± 0.228 and 22.715 ± 0.090 mg GAE/g extract total phenolic contents, respectively. In addition, the ethanol extracts of red and green Poinsettia leaves exhibited moderate and strong free-radical inhibitory activities, respectively. These findings indicate that color affects the antioxidant ability of leaves and their phenolic content.
C-prenylation of 1,3 dihydroxyxanthone: synthesis, characterization and antibacterial activity Yuanita, Emmy; Jannah, Baiq Khaeratul; Ulfa, Maria; Sudirman; Ningsih, Baiq Nila Sari; Dharmayani , Ni Komang Tri
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.149

Abstract

Prenylated 1,3-dihydroxyxanthone has been successfully synthesized using Prenyl bromide and KOH. Characterization of the synthesized compound using Infra Red (IR) and Nuclear Magnetic Resonance (1H-NMR) showed that monosubstituted c-prenylation was occurred at carbon number 2 to form 1,3-dihydroxy-2-prenylxanthone. The synthesis result was a yellow-brown paste with a yield of 43.09%. This prenylated 1,3-dihydroxyxanthone had moderate antibacterial activity against Escherichia coli with an inhibition zone > 5 mm at a concentration of 15%.
Effect of water-methanol binary solvent system in green synthesis of copper nanoparticles with tobacco leaf extract Suharto, Tomi; Sudirman, Sudirman; Ulfa, Maria; Ningsih, Baiq Nila Sari; Putri, Khoiria Nur Atika; Thamsiri, Panthong
Acta Chimica Asiana Vol. 7 No. 1 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i1.197

Abstract

The increasing demand for environmentally friendly nanoparticle synthesis, as a viable strategy for pollution control, has prompted an exploration of green chemistry methods. This study meticulously investigates the synthesis of copper nanoparticles utilizing tobacco leaf extract obtained through both cold and hot extraction techniques. The primary focus lies in scrutinizing the impact of various solvents employed for plant extracts and metal ion solutions on reduction dynamics and particle size. The study employs UV-Vis and phytochemical analyses to discern differences in chemical composition and efficacy, particularly between the water and methanol-water systems, despite their resemblance in UV-Vis spectra. Intriguingly, the results unveil that the choice of solvent significantly influences the particle size distribution and stability of colloidal nanoparticles. The methanol-water system, in particular, yields smaller, more uniform particles compared to other solvent systems. This research sheds light on the pivotal role of solvent selection in nanoparticle synthesis, emphasizing its profound impact on both the reduction process and the resulting particle size distribution. The findings underscore the nuanced relationship between solvent choice and the characteristics of the synthesized nanoparticles, providing valuable insights for optimizing environmentally friendly synthesis methods. Ultimately, this study contributes to the growing body of knowledge on green chemistry approaches for nanoparticle synthesis with implications for pollution control and sustainable materials production.
Sosialisasi Pengemasan Produk dengan Plastik Biodegradable Berbahan Selulosa dan Strategi Pemasarannya di Kelompok Wanita Tani Alummahat, Lendang Nangka, Lombok Timur, NTB Ningsih, Baiq Nila Sari; Ulfa, Maria; Yuanita, Emmy; Dharmayani, Ni Komang Tri; Septiyana, Maulida; Haviz, Nur Vinna; Hayani, Hafiyatul; Tamara, Cynthia Claudia; Septiari, Wayan Uni
Jurnal Pengabdian Inovasi Masyarakat Indonesia Vol. 3 No. 2 (2024): Edisi Agustus
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpimi.v3i2.6002

Abstract

Desa Lendang Nangka di Lombok Timur, NTB, yang termasuk dalam World Geopark UNESCO di lereng Gunung Rinjani, memiliki potensi besar dalam sektor pertanian. Namun, tantangan muncul dalam pengemasan produk pertanian yang belum ramah lingkungan. Kegiatan ini bertujuan meningkatkan nilai produk pertanian bagi kelompok Wanita Tani Alummahat melalui penggunaan kemasan ramah lingkungan berbahan selulosa dengan metode gelatinisasi dan pemasaran melalui e-commerce. Pelaksanaan kegiatan melibatkan transfer pengetahuan, teknologi, serta pembinaan dan pendampingan untuk memastikan peningkatan nilai ekonomi lokal secara berkelanjutan. Kegiatan meliputi penyuluhan, pelatihan praktis, dan pembentukan Kelompok Usaha Bersama (KUB) sebagai wadah pengembangan ide inovatif. Evaluasi menunjukkan peningkatan signifikan dalam pengetahuan dan keterampilan partisipan terkait pengemasan ramah lingkungan, serta antusiasme yang tinggi. Program ini berkontribusi pada pengembangan strategi pemasaran dan pengemasan yang berkelanjutan di tingkat desa, dengan harapan dapat memberikan dampak positif pada ekonomi masyarakat lokal.
THE INFLUENCE OF THE NATURAL PRODUCT PRACTICUM ON DECISION MAKING SKILLS Hakim, Aliefman; Jufri, Abdul Wahab; Jamaluddin, Jamaluddin; Septiani, Devi Ayu; Ningsih, Baiq Nila Sari; Supriadi, Supriadi
UNESA Journal of Chemical Education Vol. 11 No. 2 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.708 KB) | DOI: 10.26740/ujced.v11n2.p136-142

Abstract

The study of secondary metabolites is the core of Natural Product Chemistry. The process of isolating secondary metabolites from Sasambo plants, which are medicinal plants used by indigenous tribes in West Nusa Tenggara province, Indonesia, has the potential to be integrated into the Natural Product Chemistry Practicum. Students learn how to extract, fractionate, purify, and identify the structure of secondary metabolites through Natural Product Chemistry Practicum. With various alternative actions related to the process of isolating secondary metabolites, these laboratory exercises can be utilized to help students improve their decision-making skills. This study aims to investigate the impact of Natural Product Chemistry Practicum Based on Medicinal Plants Sasambo (NPP-MPS) on students' decision-making skills. This is quasi-experimental research with nonequivalent control group pretest-posttest research design. The participants are 63 students who enrolled in 6th semester students of the chemistry education department at one of the state universities in West Nusa Tenggara, Indonesia, for the 2019/2020 academic year, which were divided into experimental and the control classes. The findings show that the NPP-MPS does positively influences students' decision-making skills.
Synthesis and characterization of 2,4,6-trihydroxy benzophenone and its activity as sunscreen Yuanita, Emmy; Rohmana, Ainni; Ulfa, Maria; Ningsih, Baiq Nila Sari; Sudirman, Sudirman; Dharmayani, Ni Komang Tri; Lestarini, Ima Arum; Septiyana, Maulida; Ratnasari, Baiq Desy
Acta Chimica Asiana Vol. 8 No. 1 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i1.175

Abstract

Benzophenone was synthesized through a condensation reaction of benzoic acid and phloroglucinol with an Eaton reagent as a catalyst. The percentage of the product was 60%, and it was characterized using FTIR and 1H-NMR. The sunscreen activity was carried out using a UV-Vis spectrophotometer to calculate the SPF value. The synthesis result was made in several concentration variations: 100, 150, 200, 250, and 300 ppm to measure the SPF values. The results showed that the SPF values were 9.89, 13.39, 17.83, 23.77, and 28.26, respectively. Based on this, it can be concluded that these compounds have biological activity as sunscreen and samples of 200-300 ppm are included in the ultra-category as sunscreen.
Pemberdayaan Kelompok Wanita Tani Jimse Jaya dalam Pengembangan Produksi dan Pemasaran Serat Daun Nanas: Empowerment Program on Developing the Production and Marketing of Pineapple Leaf Fibers for the Women Farmers Group of Jimse Jaya Hayati, Ridha Nurul; Pratiwi, Bq Yulia Hasni; Ningsih, Baiq Nila Sari
DARMADIKSANI Vol 5 No 4 (2025): Edisi Desember
Publisher : Jurusan Pendidikan Bahasa dan Seni, FKIP, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/darmadiksani.v5i4.8104

Abstract

Kegiatan ini bertujuan untuk memberdayakan Kelompok Wanita Tani (KWT) Jimse Jaya di desa Lendang Nangka Utara melalui pengembangan keterampilan pengolahan, pengemasan, dan pemasaran serat daun nanas sebagai upaya pemanfaatan limbah pertanian bernilai tambah. Metode pelaksanaan meliputi tiga tahap, yaitu persiapan, pelaksanaan, dan evaluasi. Pada tahap persiapan dilakukan sosialisasi dan perencanaan strategi produksi serta pemasaran. Tahap pelaksanaan mencakup pelatihan teknis ekstraksi serat menggunakan mesin, pengemasan, dan pelabelan produk, serta pelatihan promosi berbasis media digital. Tahap evaluasi dilakukan melalui perbandingan prates–pascates untuk menilai peningkatan pengetahuan, keterampilan, serta kualitas produk. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada pemahaman peserta terkait mutu serat, keterampilan ekstraksi, dan teknik pengemasan. Serat yang dihasilkan lebih panjang, bersih, dan kuat dibandingkan sebelum pelatihan. Produksi harian meningkat hampir dua kali lipat, dan pemasaran mulai memanfaatkan platform digital dengan jangkauan lebih luas. Evaluasi menunjukkan skor pengetahuan, keterampilan, dan strategi pemasaran meningkat dari rata-rata 55–60% menjadi 85–92% setelah pelatihan. Kesimpulannya, pemberdayaan masyarakat melalui KWT Jimse Jaya efektif meningkatkan kapasitas teknis dan manajerial dalam pemanfaatan serat daun nanas. Program ini tidak hanya menghasilkan produk yang lebih berkualitas dan memiliki nilai tambah, tetapi juga memperkuat kemandirian ekonomi masyarakat desa melalui strategi pemasaran modern yang berorientasi keberlanjutan.
The effect of pre-class quizzes assisted flipped classroom learning on student learning outcomes in the biochemistry course of fatty acid metabolism Safitri, Erni; Sofia, Baiq Fara Dwirani; Ningsih, Baiq Nila Sari; Savalas, Lalu Rudyat Telly
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i6.5745

Abstract

The study aims to determine the effect of the flipped classroom learning model assisted by pre-class quizzes on student learning outcomes of the Faculty of Mathematics and Natural Sciences, University of Mataram, in the subject of biochemistry, on fatty acid metabolism. The type of experimental research used in this study was a Quasi-Experimental Design with a Post-Test Only Non-Equivalent Control Group Design. The population in this study was the sixth-semester students of the Faculty of Mathematics and Natural Sciences, Mataram University, for the 2022 academic year, totaling 60 people with a sampling technique using saturated sampling. In this research, two classes were used: the control and experimental classes. In the experimental class, namely class A, the flipped classroom learning model was treated with the help of pre-class quizzes, while the control class only used the flipped classroom model without pre-class quizzes. This study measured student learning outcomes from post-test question scores with 30 multiple-choice questions. The data analysis techniques used are normality test, homogeneity test, hypothesis test using paired sample t-test, and effect size test. Based on the results of data analysis using the normality test and homogeneity test that was carried out, the data was usually and homogeneously distributed, so hypothesis testing was carried out using the t-test and effect size test. Based on the hypothesis testing that has been carried out, there is an influence of the flipped classroom learning model assisted by pre-class quizzes on student learning outcomes in the biochemistry course on fatty acid metabolism. This can be seen from the sig value. (2-tailed) of 0.000 in the paired sample t-test, resulting in the interpretation that H0 is rejected and H1 is accepted. As for the magnitude of the effect of the flipped classroom model assisted by pre-class quizzes using the effect size calculation formula, the result was 1.33, which shows the criteria for a high effect value.
Zeolite Synthesis Based Silica from Saccharum officinarum L. with Black Stem Using the Hydrothermal Method Redi, Muhamad; Astuti, Intan Rizki Widya; Ramadhani, Restu Agung; Sopiana, Baiq Nova; Adhya, Farhana Nida ul; Nikmah, Hidayatun; Sudirman, Sudirman; Ningsih, Baiq Nila Sari
Jurnal Pijar Mipa Vol. 19 No. 3 (2024): May 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i3.6541

Abstract

Saccharum officinarum L. has a high amount of silica content, which can be used as the main component of zeolite synthesis. Silica was isolated from Saccharum officinarum L. bagasse with NaOH and HCl. This research aims to synthesize zeolite using silica from Saccharum officinarum L. with black stem and alumina from aluminium foil. The Saccharum officinarum L. used in this research was sourced from Lombok Island, West Nusa Tenggara Province, Indonesia. Silica was sourced from Saccharum officinarum L. using the sol-gel method. The silica from the isolation of dregs ash obtained 20 g of silica with a high percentage (yield) of 50%. This study found that 5.29 g of aluminium foil produced 14.29 g of alumina with the addition of 22.50 g of Na2CO3. The zeolite obtained was 3.88 g with a SiO2:Al2O3 ratio of 5:3. From this study, the percent (%) of obtained zeolite was 48.5% from the weight of the silica and alumina produced. The zeolite results synthesized from Saccharum officinarum L.  ash were characterized using FTIR. Based on the FTIR results, absorption was found at wave numbers (cm-1) 960, 729, and 668. The zeolite obtained was pure white and had a FTIR spectrum similar to that of Zeolite X from previous research. It can be predicted that the zeolite obtained from this research has been formed. This research is expected to be useful in increasing the effectiveness of the silica extraction process from Saccharum officinarum L. with black stem. Further analysis using XRD and SEM is needed to determine the characteristics of the zeolite produced.
MENGOPTIMALKAN PEMANFAATAN SUMBER DAYA KENTANG: KETERLIBATAN MASYARAKAT DAN PENINGKATAN KETERAMPILAN DALAM MENGGALI POTENSI TINGGI TEPUNG KENTANG DI DESA WISATA SEMBALUN BUMBUNG Dharmayani, Ni Komang Tri; Yuanita, Emmy; Ulfa, Maria; Ningsih, Baiq Nila Sari; Sudirman, Sudirman; Septiyana, Maulida; Wardhana, I Gede Adhitya Wisnu
Jurnal Pengabdian Inovasi Masyarakat Indonesia Vol. 3 No. 1 (2024): Edisi Februari
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpimi.v3i1.3344

Abstract

Potatoes are one of the staple crops widely cultivated worldwide, with significant production, especially in Europe and North America. However, the economic potential of potatoes has not been fully harnessed, particularly in villages like Sembalun Bumbung, West Nusa Tenggara Province, Indonesia. This article outlines a community engagement approach aimed at enhancing the understanding and skills of the community in utilizing potato flour as a valuable local resource. The implementation methodology involves three main approaches: knowledge transfer, technology transfer, and mentoring. The activities encompass education, hands-on training, as well as testing and evaluating processed potato flour products, particularly noodles. The results of the program demonstrate high enthusiasm among participants, who have successfully produced high-quality potato flour and noodles. This program provides new opportunities for the community to utilize potatoes as an additional source of income and has the potential to significantly boost the village's economy.
Co-Authors Adhya, Farhana Nida ul Aliefman Hakim Astuti, Intan Rizki Widya Budiana, Irwan Dharmayani , Ni Komang Tri Emmy Yuanita Haviz, Nur Vinna Hayani, Hafiyatul I Gede Adhitya Wisnu Wardhana Ima Arum Lestarini Jamaluddin Jamaluddin Jannah, Baiq Khaeratul Jufri, Abdul Wahab LALU RUDYAT TELLY SAVALAS Maria Ulfa Maulida Septiyana Muliasari, Handa Nikmah, Hidayatun Ningsih, Apriliya Nursofia, Baiq Ike Pratiwi, Bq Yulia Hasni Putri, Baiq Yusmiar Aulia Putri, Khoiria Nur Atika Ramadhani, Restu Agung Ramdhani, Restu Agung Ratnasari, Baiq Desy Redi, Muhamad Ridha Nurul Hayati Rohmana, Ainni Safitri, Erni Septiani, Devi Ayu Septiari, Wayan Uni Sofia, Baiq Fara Dwirani Sopiah, Baiq Sopiana, Baiq Nova Sudirman Sudirman Sudirman Suharto, Tomi Supriadi Supriadi Tamara, Cynthia Claudia Thamsiri, Panthong Tri Dharmayani, Ni Komang Tsani, M. Khairul