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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta MASALIQ: Jurnal Pendidikan dan Sains Entalpi Pendidikan Kimia Jurnal Pengabdian Pada Masyarakat
Syamsi Aini
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Validity of Interactive learning PowerPoint Media based on Guided Inquiry on Thermochemistry Topic for Class XI SMA/MA Rizka Chairani Yasin; Syamsi Aini
Entalpi Pendidikan Kimia Vol 3 No 3 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v3i3.268

Abstract

Thermochemistry is one of the chemistry learning materials that is difficult for students to understand, so it requires a level of chemical representation in the learning process which is assisted by the presentation of interactive powerpoint media. This study aims to produce an interactive powerpoint learning media based on guided inquiry that is suitable for use for learning and can determine the level of validity of the interactive powerpoint learning media. The type of research used is Research and Development (R&D) with a 4D development model. The research instrument used was a validity questionnaire which was processed using the Aiken's V formula.
Penyuluhan Pembuatan Pupuk Bokashi dari Kotoran Ayam dan Abu Sekam di Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 7 No 4 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.794 KB) | DOI: 10.30653/002.202274.205

Abstract

COUNSELING ON MAKING BOKASHI FERTILIZER FROM CHICKEN MANURE AND HUSK ASH IN NAGARI MUNGKA. Community activities in the field of livestock are growing in Nagari Mungka, especially raising chickens. However, the processing of chicken manure waste is not handled properly. This may be due to the lack of public knowledge about this waste processing technique. This counseling aims to improve the knowledge and skills of chicken farmers in making bokashi fertilizer from chicken feces in Nagari Mungka, Lima Puluh Kota District. Bokashi fertilizer is a type of organic fertilizer that uses decomposers in the manufacturing process. The basic ingredients for this bokashi fertilizer are chicken feces, husk ash, bran and EM4. The counseling activity includes presentation of material, demonstration and evaluation of activity. Chicken farmers receive the knowledge about the benefits of bokashi fertilizer, how to make it and how to market it if it has the potential to be sold. This activity has a great influence on chicken farmers because this activity is very useful and right on target. Chicken farmers look enthusiastic in participating in the activities. The result of this community service activity is the increased knowledge and skills of breeders in processing chicken manure into bokashi fertilizer and have the desire to try and apply it.
Synthesis and Characterization of Sodium Aluminate from Aluminum and Sodium Hydroxide Dinalia, Dinalia; Syamsi Aini; Jon Efendi
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 04 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss04/627

Abstract

The synthesis of sodium aluminate from aluminum and sodium hydroxide was successfully conducted to optimize its potential as a precursor for zeolite production. Aluminum was reacted with NaOH solution under continuous stirring for five hours, with variations in pH and Al-to-NaOH molar ratio to determine optimal synthesis conditions. The highest aluminum conversion (94.33%) was achieved at pH 13.6 and an Al-to-NaOH molar ratio of 1:4. Fourier-transform infrared (FTIR) spectroscopy confirmed the formation of tetrahedral [AlO₄]⁻ units through characteristic aluminate vibrational bands at 624 and 727 cm⁻¹. X-ray diffraction (XRD) analysis revealed sharp reflections at 2θ ≈ 34.8°, corresponding to crystalline NaAlO₂ (JCPDS No. 33-1200), indicating high crystallinity and phase purity. Scanning electron microscopy coupled with energy-dispersive X-ray (SEM–EDX) analysis showed irregular plate-like crystalline particles with a near-stoichiometric Na:Al ratio (~1:1), confirming compositional homogeneity. Overall, optimized alkalinity and stoichiometry were found to be critical for producing highly crystalline and compositionally pure sodium aluminate, suggesting its suitability as a high-quality, environmentally friendly precursor for zeolite synthesis.
Karakterisasi Gelatin Halal dari Kulit Kepala Ikan Lele Dumbo (Clarias gariepinus) sesuai SNI 06-3735-1995 Putri Hanifa; Syamsi Aini
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6727

Abstract

The growing demand for environmentally friendly and halal-compliant gelatin in Indonesia necessitates the exploration of alternative sources based on organic waste. One such potential lies in the underutilized waste of the catfish (Clarias gariepinus) head skin. This study aims to synthesize and characterize halal gelatin derived from catfish head skin using asam kandis (Garcinia cowa) as a natural acid solvent through an acid-based extraction method. The extraction process consisted of three main stages: degreasing, demineralization, and extraction at 55°C. An experimental approach was employed to assess the physicochemical parameters of the extracted gelatin. The analysis revealed moisture content of 10.01%, ash content of 0.24%, fat content of 1.07%, pH of 5.60, gelling point of 13°C, melting point of 29°C, and viscosity of 6.0 cP, all of which comply with the Indonesian National Standard (SNI 06-3735-1995) for gelatin quality. FTIR characterization showed distinctive absorption spectra for Amide A (3276–2939 cm⁻¹), Amide I (1630 cm⁻¹), Amide II (1532–1447 cm⁻¹), and Amide III (1241 cm⁻¹), confirming successful collagen conversion into gelatin. In conclusion, catfish head skin presents promising potential as a halal, eco-friendly gelatin source that meets national quality standards.
Penentuan Kadar Besi (Fe), Mangan (Mn), dan Timbal (Pb) dalam Sampel Air Minum Menggunakan Atomic Absorption Spectrophotometry (AAS) Vivi Aprilia Putri; Syamsi Aini
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7561

Abstract

This study aims to determine the concentrations of heavy metals—iron (Fe), manganese (Mn), and lead (Pb) in drinking water samples using the Atomic Absorption Spectrophotometry (AAS) method. The research employed a descriptive quantitative approach, involving the preparation of standard solutions and the analysis of filtered drinking water samples. Measurement results indicated that the concentrations of Fe (–0.3714 mg/L), Mn (–0.1098 mg/L), and Pb (–0.5218 mg/L) were below the instrument’s detection limit, resulting in negative values. These findings suggest that the levels of heavy metals in the samples are extremely low and well below the maximum limits set by the Regulation of the Minister of Health of the Republic of Indonesia No. 2 of 2023: 0.3 mg/L for Fe, 0.1 mg/L for Mn, and 0.01 mg/L for Pb. The study concludes that the tested drinking water samples meet quality standards and are safe for consumption, posing no health risks from heavy metal exposure. Additionally, AAS proved to be an effective method for detecting trace metal concentrations, making it suitable for regular and sustainable water quality monitoring.
Efektivitas Penggunaan E-LKPD Materi Reaksi Redoks Berbasis Problem Based Learning terhadap Hasil Belajar Peserta Didik Fase E SMTI Padang Sampaikan Sabda Zebua; Syamsi Aini
MASALIQ Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i3.9899

Abstract

Although the integration of digital learning media has received attention in various previous studies, research that specifically discusses the effectiveness of Problem-Based Learning (PBL)-based E-LKPD in improving learning outcomes on redox reaction material remains limited. This study aims to evaluate the effectiveness of using PBL-based E-LKPD on redox reaction material on the learning outcomes of Phase E students at SMK SMTI Padang. This study used a quantitative approach with a pre-experimental design in the form of a one-group pretest-posttest design, involving 35 students selected using purposive sampling. Data were collected using a multiple-choice test instrument administered in the form of a pretest and posttest, then analyzed using the N-Gain test. The results showed a significant improvement in learning outcomes, with the average score increasing from 29.64 in the pretest to 88.39 in the posttest, and an N-Gain score of 0.83 in the high category. These findings contribute to the development of constructivism-based learning and expand understanding of the integration of digital media with problem-based learning. The conclusion of this study confirms that PBL-based E-LKPD is effective in improving students’ conceptual understanding and learning outcomes on redox reaction material. The implications of this study include theoretical contributions to digital learning innovation and practical implications for educators in improving the quality of chemistry learning through the use of PBL-based E-LKPD.
Potensi Kulit Tuna (Thunnus sp.) sebagai Sumber Gelatin melalui Pretreatment Asam Kandis dan Ultrasonikasi Khairannisa Khairannisa; Syamsi Aini
MASALIQ Vol 6 No 4 (2026): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i4.10703

Abstract

Although gelatin extraction from tuna skin has been widely studied, the use of asam kandis as a natural acid combined with ultrasonic bath assistance remains limited. This study aimed to determine the physicochemical characteristics and functional groups of tuna skin gelatin extracted using asam kandis and an ultrasonic bath. This study employed a quantitative approach with a laboratory experimental design. The extraction process included pretreatment using 0.1 M NaOH for 2 hours, soaking in an asam kandis solution at pH 2.4 for 1 hour, and extraction using an ultrasonic bath at 55 °C for 90 minutes. The data were analyzed through tests of yield, moisture content, ash content, fat content, pH, viscosity, and Fourier Transform Infrared (FTIR) analysis. The results showed that the gelatin produced had a yield of 12.45%, moisture content of 10.14%, ash content of 1.62%, fat content of 1.46%, pH of 6.51, and viscosity of 1.99 cP, thereby meeting gelatin quality standards. FTIR analysis identified characteristic gelatin absorption bands at wavenumbers of 3278 cm⁻¹ (Amide A), 1633 cm⁻¹ (Amide I), 1531 cm⁻¹ (Amide II), and 1243 cm⁻¹ (Amide III). These findings indicate that the combination of asam kandis and an ultrasonic bath can produce tuna skin gelatin with good physicochemical characteristics and has the potential to be developed as an alternative to commercial gelatin.
Pemanfaatan Limbah Kulit Ikan Marlin (Makaira nigricans) sebagai Sumber Gelatin dengan Pretreatment Asam Kandis Viona Oktafiani; Syamsi Aini
MASALIQ Vol 6 No 4 (2026): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i4.10825

Abstract

Marlin fish skin is a by-product of the fisheries industry that contains collagen and has the potential to be utilized as an alternative gelatin raw material, but its utilization through natural acid-based pretreatment and ultrasonically assisted extraction remains limited. This study aims to evaluate the utilization of marlin fish skin waste as a source of gelatin through kandis acid pretreatment and ultrasonically assisted extraction. This study used an experimental method with pretreatment stages using kandis acid, followed by extraction using an ultrasonic bath. The resulting gelatin was analyzed based on yield, physicochemical properties, and functional groups using Fourier Transform Infrared Spectroscopy (FTIR). The results of the study show that marlin fish skin gelatin produced a yield of 9.20%, moisture content of 9.91%, ash content of 0.49%, fat content of 1.99%, pH of 6.56, viscosity of 2.33 cP, melting point of 21°C, and gel point of 3°C. The moisture content, ash content, fat content, pH, and viscosity values met the quality requirements of SNI 06-3735-1995 and GMIA (2019). FTIR analysis identified Amide A bands at 3275 cm⁻¹, Amide I at 1632 cm⁻¹, Amide II at 1530 cm⁻¹, and Amide III at 1242 cm⁻¹, indicating similarity to standard gelatin. The conclusion of the study affirms that marlin fish skin waste can be utilized as a source of gelatin through kandis acid pretreatment and ultrasonically assisted extraction, with physicochemical characteristics that meet quality requirements. These findings have implications for developing the utilization of fisheries by-products as value-added alternative gelatin raw materials and have the potential to support the development of commercial gelatin products.
Efektivitas E-LKPD Hidrokarbon Berbasis Problem Based Learning terhadap Hasil Belajar Peserta Didik Kelas X SMK SMTI Padang Firnanda Aji Saputra; Syamsi Aini
MASALIQ Vol 6 No 4 (2026): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i4.10995

Abstract

Although the use of electronic Student Worksheets (e-LKPD) and the Problem Based Learning (PBL) model has been widely studied, research that specifically analyzes the effectiveness of PBL-based hydrocarbon e-LKPD that has been declared valid and practical on the learning outcomes of vocational high school students remains limited. This study aims to analyze the effectiveness of PBL-based hydrocarbon e-LKPD on the learning outcomes of Grade X students at SMK SMTI Padang. This study used a quantitative approach with a quasi-experimental nonequivalent control group design involving 70 students selected through purposive sampling. Data were collected using a multiple-choice test instrument administered through pretests and posttests, and then analyzed using descriptive statistics, prerequisite tests, N-Gain analysis, and Analysis of Covariance (ANCOVA). The results showed that the mean posttest score of the experimental class was 83.69, which was higher than that of the control class, which was 62.74. The experimental class obtained an N-Gain score of 0.76 in the high category, while the control class obtained an N-Gain score of 0.39 in the moderate category. The ANCOVA results showed that the use of PBL-based hydrocarbon e-LKPD had a significant effect on students’ learning outcomes after controlling for initial ability (F = 82.439; p < 0.001). These findings contribute to the development of technology-based chemistry learning and expand understanding of the effectiveness of digital learning media integrated with PBL in vocational education. The conclusion of this study affirms that PBL-based hydrocarbon e-LKPD is effective in improving students’ learning outcomes. The implications of this study include theoretical contributions to the development of digital chemistry learning literature and practical implications for teachers and schools in implementing interactive learning media that are relevant to vocational learning needs.
Ekstraksi dan Karakterisasi Gelatin Kulit Ikan Mahi-Mahi (Coryphaena hippurus) dengan Pretreatment Asam Kandis dan Ultrasonikasi Fhadillah Putri Soti; Syamsi Aini
MASALIQ Vol 6 No 5 (2026): MASALIQ: Jurnal Pendidikan dan Sains
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i5.11524

Abstract

The utilization of mahi-mahi (Coryphaena hippurus) skin as a raw material for gelatin is an effort to enhance the value of fishery by-products through an extraction method based on natural materials. This study aimed to determine the characteristics of gelatin from mahi-mahi skin produced through pretreatment using kandis acid and extraction with an ultrasonic bath. Gelatin characterization was conducted based on yield, physicochemical parameters, and functional group identification using Fourier Transform Infrared Spectroscopy (FTIR). The results showed that the resulting gelatin had a yield of 13.60%, moisture content of 6.59%, ash content of 1.02%, fat content of 1.80%, pH of 6.98, viscosity of 2.15 cP, melting point of 21 °C, and gel point of 3 °C. FTIR analysis identified the absorption bands of amides A, I, II, and III at wavenumbers of 3282, 1633, 1528, and 1241 cm⁻¹, respectively. These findings indicate that mahi-mahi skin has the potential to be utilized as an alternative source of gelatin with physicochemical characteristics and functional groups that support the development of materials derived from fishery by-products. The use of kandis acid and ultrasonic extraction also has implications for the development of gelatin production methods that utilize natural materials and are more environmentally friendly.
Co-Authors Ahdiatun Nuri Armelia Ananda Chatarina Umbul Wahyuni DESY KURNIAWATI Desyana Anggraeni Dinalia, Dinalia Faizah Qurata’aini Fajar Sa&#039;bandi Fazila Amelia Fhadillah Putri Soti Fila Delvia Firnanda Aji Saputra Fitri Amelia Iryani Iryani Isra Yeni Jon Efendi Khairannisa Khairannisa Kiki Amelia Miftahul Khair Muhammad Iqbal Alzain Mulia, Melindra Muthiara Wahyuni Nuranisah Nuranisah Putri Hanifa Ridha Santika Riga Riga Rizka Chairani Yasin Romy Dwipa Yamesa Away Sampaikan Sabda Zebua Trisna Kumala Sari Umar Kalmar Nizar Viona Oktafiani Vivi Aprilia Putri Winda Selfira Yusmaita, Eka