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All Journal IAES International Journal of Robotics and Automation (IJRA) Jurnal Pembangunan Pendidikan: Fondasi dan Aplikasi Jurnal Penelitian Saintek Jurnal Biologi Udayana El-Hayah : Jurnal Biologi Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Pedagogi Hayati JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) SPEKTRA: Jurnal Kajian Pendidikan Sains SEJ (Science Education Journal) Jurnal Penelitian Pendidikan IPA (JPPIPA) BIOEDUKASI Jurnal Ilmiah Pendidikan Fisika Journal of Science Education Research PENDIPA Journal of Science Education Diklabio: Jurnal Pendidikan dan Pembelajaran Biologi JURNAL ILMIAH PETERNAKAN TERPADU Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Biosilampari: Jurnal Biologi COMPTON: Jurnal Ilmiah Pendidikan Fisika JPBIO (Jurnal Pendidikan Biologi) PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Biotek IJEEM - Indonesian Journal of Environmental Education and Management Kasuari: Physics Education Journal (KPEJ) Agroteknika Abdimas Universal ULIN: Jurnal Hutan Tropis Silampari Jurnal Pendidikan Ilmu Fisika Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Hydrogen: Jurnal Kependidikan Kimia Bioscientist : Jurnal Ilmiah Biologi DIKSAINS : Jurnal Ilmiah Pendidikan Sains JURNAL HUTAN TROPIS Al Jahiz: Journal of Biology Education Research Filogeni: Jurnal Mahasiswa Biologi Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Analit: Analytical And Environmental Chemistry
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ANALYSIS OF ASCORBIC ACID AND BORAX USING PURPLE SWEET POTATO EXTRACT AS A COLORIMETRIC SENSOR IN FOOD AND DRINKS USING DIGITAL IMAGES As-Salimah, Ainun Mardiyah; Sutarno, Sutarno; Yani, Ariefa Primair; Karyadi, Bhakti; Firdaus, M Luthfi
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

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

Abstract

The addition of ascorbic acid and borax to food and drinks if it exceeds the threshold limit can have dangerous effects on consumers. This research aims to create a simple and fast but accurate method for analyzing ascorbic acid and borax, using purple sweet potato extract as a colorimetric sensor and quantitative analysis using digital images. The results of the digital image have an accuracy of 99% with LOD (Limit of Detection) of 1.96% and LOQ (Limit of Quantity) with a value of 6.53% for ascorbic acid. As for borax, the LOD is 0.54% and the LOQ is 1.78%. Semi-quantitative tests for ascorbic acid and borax in food and drinks can be carried out using a cotton test kit. The wet noodle food sample tested (purchased from around the Bengkulu University campus) was proven not to contain borax because there was no color change. However, the packaged drink tested positive for ascorbic acid as indicated by a color change from purple to pink.
Qualitative and Quantitative Detection of Borax in Food Using Butterfly Pea Flower Extract Fitriani, Detty; Karyadi, Bhakti; Nursa'adah, Euis
Al Jahiz Vol 6 No 2 (2025): Al-Jahiz: Journal of Biology Education Research, July-December 2025
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan UIN Jurai Siwo, Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32332/al-jahiz.v6i2.11116

Abstract

The detection of borax in food is of critical importance due to its toxic properties, which pose serious health risks, especially when consumed continuously, even in small amounts. Therefore, an environmentally friendly, accessible, and easy-to-use detection method is needed for broader application, particularly in routine food monitoring. This study introduces a novel quantitative detection approach using butterfly pea flower (Clitoria ternatea L.) extract as a natural indicator, combining visual colorimetry and UV-Vis spectrophotometry for dual-mode borax analysis. Unlike previous studies that focused solely on qualitative color observation, this research establishes a quantitative correlation between absorbance and borax concentration, supported by strong linearity (R² = 0.9942) and high sensitivity (LoD = 0.026 ppm; LoQ = 0.088 ppm). The butterfly pea extract, rich in anthocyanins, produced a distinct blue color that shifted to green upon interaction with borax, forming a specific butterfly pea–borax complex with a maximum wavelength (λmax) at 624 nm. Application to real meatball samples revealed borax contents of 0.528% and 0.4641% in two samples, respectively. The integration of butterfly pea extract with turmeric paper as a dual-confirmation system enhances analytical reliability while maintaining cost-effectiveness and environmental safety. This work contributes a validated, eco-friendly, and quantitative natural detection method that bridges the gap between laboratory precision and community-based food safety monitoring.
Study of dogania subplana aclimatization in the turtle learning center university of bengkulu Marliansa, Meiredo; Karyadi, Bhakti; Parlindungan, Deni; Ruyani, Aceng; Nursa'adah, Euis
JPBIO (Jurnal Pendidikan Biologi) Vol 10, No 2 (2025): November 2025
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v10i2.4953

Abstract

The forest softshell turtle (Dogania subplana) is a species increasingly threatened by habitat destruction and overexploitation. This study aims to identify the acclimatization process of D. subplana in an artificial environment, specifically, an aquarium at the Turtle Learning Center (TLC). The research was conducted over 30 days from July to August 2024. Observations were made on daily behavior, body temperature, and health condition, individual biometric measurements, and environmental (abiotic) parameters. The results showed that daily behaviors such as feeding, basking, and hiding occurred regularly, indicating the species' ability to adapt to a new environment. The turtles experienced an increase in body weight, while growth in carapace length and width was very slow. The body temperature of D. subplana varied in accordance with the surrounding environmental temperature, reflecting its dependence on ambient conditions. Some individuals experienced minor health issues, such as fungal infections, but the majority remained active and healthy. Environmental factors such as temperature, humidity, pH, dissolved oxygen, total dissolved solids, and light intensity were within ranges conducive to acclimatization. These findings suggest that the aquarium at the TLC is quite effective as an ex situ conservation facility in supporting the adaptation process of D. subplana  outside its natural habitat.
PENGARUH PENERAPAN PEMBELAJARAN IPA TERPADU TIPE SHARED PADA TEMA PEDULI LINGKUNGAN TERHADAP PENGUASAAN KONSEP SISWA SMPN 9 KOTA BENGKULU Sembiring, Evata Disolva br; Sutarno, Sutarno; Uliyandari, Mellyta; Taufik, Annisa Novianti; Karyadi, Bhakti
DIKSAINS : Jurnal Ilmiah Pendidikan Sains Vol. 6 No. 1: Desember 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diksains.6.1.69-78

Abstract

ABSTRAK   Penelitian ini bertujuan untuk mengetahui pengaruh penerapan pembelajaran IPA terpadu tipe shared terhadap penguasaan konsep siswa, besar pengaruh penerapan pembelajaran IPA terpadu tipe shared terhadap penguasaan konsep siswa dan tanggapan siswa dalam penerapan pembelajaran IPA terpadu tipe shared terhadap penguasaan konsep siswa. Penelitian ini menggunakan satu kelas eksperimen dengan sampel penelitian adalah siswa kelas VII A yang berjumlah 31 siswa. Metode dalam penelitian ini adalah pre-experimental dengan desain one-grup pretest-posttest design. Berdasarkan hasil analisis data penguasaan konsep menggunakan uji t paired, diperoleh nilai signifikansi menunjukkan 0,005<0,05 sehingga Ho ditolak dan Ha diterima. Hasil perhitungan diperoleh besarnya effect size Cohen’s d sebesar 0,37 menunjukkan bahwa terjadi pengaruh yang sedang. Serta analisis angket tanggapan siswa diperoleh semua indikator berkategori baik dengan perolehan skor rata-rata sebesar 83,3. Sehingga dapat ditarik kesimpulan bahwa penerapan pembelajaran IPA terpadu tipe shared memberikan pengaruh yang signifikan terhadap penguasaan konsep siswa kelas VIIA SMPN 9 Kota Bengkulu.     Kata kunci : Pembelajaran IPA, Tipe Shared, Peduli Lingkungan, Penguasaan Konsep   ABSTRACT   This study aims to determine  the effect of the application of shared type integrated science learning on students' concept mastery, the effect of the application of shared type integrated science learning on students' concept mastery and students' responses in the application of shared type integrated science learning on students' concept mastery. This study uses one experimental class with the research sample is VII A class students totaling 31 students. The method in this research is pre-experimental with one-group pretest-posttest design. Based on the results of concept mastery data analysis using paired t test, the significance value shows 0.005 <0.05 so Ho is rejected and Ha is accepted. The calculation results obtained the magnitude of the effect size Cohen's d of 0.37 indicates that there is a moderate influence. As well as the analysis of student response questionnaires obtained all indicators are categorized as good with an average score of 83.3. So it can be concluded that the application of shared-type integrated science learning has a significant effect on the mastery of the concept of students in class VIIA SMPN 9 Bengkulu City.   Keywords : Science Learning, Shared Type, Environmental Care, Concept Mastery
Potensi Biomassa Pohon dan Emisi Karbondioksida Untuk Menilai Keseimbangan Karbon di Lingkungan Wahyuningsih, Endah Tri; Karyadi, Bhakti; Wardana, Rendy Wikrama; Nursa’adah, Euis; Mayub, Afrizal
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.16620

Abstract

This study aims to analyze carbon emissions from motor vehicles and the potential for carbon absorption by vegetation on four main roads in Bengkulu City: Padang Jati, Hibrida, Pagar Dewa, and Sukarami. The approach used is quantitative-descriptive, with data collected through traffic surveys and direct measurements of vegetation parameters during the observation period. Emissions are calculated using emission factors based on IPCC/KLHK standards according to vehicle type, while tree biomass is analyzed using allometric equations based on trunk diameter, track length, and vegetation type. Carbon analysis on four roads in Bengkulu City shows a significant imbalance between vehicle emissions and vegetation absorption. Sukarami recorded the highest emissions (751,813 kg CO₂) with a biomass of only 24,053 kg (absorption of 40,607 kg), making it a carbon source. Conversely, Padang Jati had the largest biomass (881,578 kg) compared to emissions of 431,889 kg CO₂, making it a carbon sink with absorption of 344%. Hibrida and Pagar Dewa showed intermediate conditions, with emissions of 424,145–570,063 kg CO₂ and absorption of 544,349–947 kg, indicating an unbalanced absorption capacity. These results emphasize the need to increase vegetation cover and manage green spaces as strategies for mitigating urban climate change.
Artificial Artificial habitat design (Dogania subplana) the area Turtle Learning Center (TLC) Universitas Bengkulu Adriataspen, Milzen; Karyadi, Bhakti; Parlindungan, Deni; Ruyani , Aceng; Nursa’adah, Euis
Jurnal Penelitian Saintek Vol 30, No 2 (2025)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v30i2.86213

Abstract

Malayan soft- shelled Turtle (Dogania subplana) is a species of freshwater softshell turtle that inhabits streams and swamps. This species is considered threatened with extinction and is listed in Appendix III of CITES and as Least Concern by the IUCN. This study aims to design an artificial habitat as a conservation effort and to identify the behavioral adaptations of Dogania subplana. The research method used an ecology-based design. The research subjects were five individuals of D. subplana, consisting of three females and two males. Data collection methods included field observation, literature review, and documentation. Research instruments involved environmental sensors to measure abiotic data. Data analysis was conducted both qualitatively and quantitatively. Qualitative data were analyzed descriptively through systematic and accurate reviews based on field findings and supported with photographic documentation. Quantitative data were analyzed using the average percentage of observed behaviors, presented in graphs, and supported by measured environmental abiotic data. The study results outline the stages of artificial habitat design for D. subplana, which include: location design, area division based on function, addition of supporting biota, fencing, and acclimatization. Observations revealed three behaviors feeding, basking, and aggression which were influenced by environmental temperatures from 26–31°C. D. subplana behaviors were observed only in aquatic areas with sandy and rocky substrates, indicating that such behaviors are strongly influenced by both terrestrial and aquatic environmental conditions. The study concludes that the artificial habitat at the Turtle Learning Center (TLC) of the University of Bengkulu, designed with three zones land, mud, and water effectively supports the natural adaptations and activities of D. subplana, as indicated by their feeding, basking, and aggressive behaviors.
The effect of salung leaf extract (Psychotria viridiflora) on blood glucose levels in mice Dara, Niki Dwi Dia; Ruyani, Aceng; Wardana, Rendy Wikrama; Mayub, Afrizal; Karyadi, Bhakti
Jurnal Penelitian Saintek Vol 30, No 2 (2025)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v30i2.87757

Abstract

This research is crucial in the context of the rising global prevalence of diabetes, a metabolic disorder that significantly affects public health. This study aims to determine the effect of salung leaf extract (Psychotria viridiflora) on blood glucose levels in hyperglycemic mice (Mus musculus). The study used 25 mice (Mus musculus) weighing 20-40 grams, divided into 5 treatment groups (P). Each group consisted of 5 mice, including a negative control, positive control, and three experimental groups with the administration of P. viridiflora extract at various doses (0.0112; 0.0225; and 0.0337 g/kgBW). Blood glucose measurements were conducted four times, on days 0, 6, 12, and 18, which included an initial glucose measurement, post-alloxan induction, and subsequent measurements after treatment. Among the three tested doses, the highest dose (0.0337 g/kg BW) proved to be the most effective in reducing blood sugar levels in alloxan-induced M. musculus, with effectiveness comparable to the standard drug Glibenclamide. Thus, the extract of P. viridiflora leaves shows strong potential as an alternative herbal antidiabetic therapy for M. musculus.
Studi Fase Pertumbuhan dan Perkembangan Tanaman Lotus (Nelumbo nucifera) pada Ekosistem Buatan Kolam Sains Universitas Bengkulu Panjaitan, Anton; Parlindungan, Deni; Sutarno, M; Karyadi, Bhakti; Kurniasih, Septi
Agroteknika Vol 8 No 4 (2025): Desember 2025
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v8i4.536

Abstract

Lotus adalah tanaman air yang memiliki habitat alami di rawa atau tempat berlumpur. Pertumbuhan dan perkembangan lotus perlu dikaji lebih dalam untuk mempermudah proses budidaya. Budidaya lotus di bengkulu masih terbilang minim, meskipun di beberapa daerah sudah ada hanya dijadikan sebagai tanaman hias. Penelitian ini bertujuan untuk mengetahui pertumbuhan dan perkembangan lotus di kolam sains Universitas Bengkulu. Pengamatan dilakukan pada 4 stasiun penelitian dengan variasi ketinggian air dan lumpur yang berbeda. Parameter pertumbuhan lotus yang diamati adalah pertumbuhan biji (pertumbuhan tunas, jumlah tunas, jumlah daun, jumlah akar dan panjang akar), pertumbuhan bibit (jumlah daun, diameter daun, jumlah rimpang dan perbandingan pertumbuhan daun melayang dan daun koin), dan pemanenan (pertumbuhan bunga dan biji yang dihasilkan) dan dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan bahwa pertumbuhan bibit lebih maksimal dari biji yang memiliki ciri dengan bentuk membulat sempurna, tidak kisut dan tidak berjamur. Lokasi terbaik untuk pertumbuhan dan perkembangan lotus yaitu pada plot 2 dilihat dari laju pertumbuhan yang lebih cepat dibandingkan plot 1, plot 3 dan plot 4 dengan Parameter pertumbuhan pada plot 2 memiliki rata-rata diameter daun 66,3 mm, jumlah daun 5 helai, diameter tangkai daun 2 mm, dan jumlah rimpang 5 ruas. Jumlah biji yang dihasilkan memiliki rata-rata 28 terdiri dari 19 biji fertil dan 9 biji infertil. Pertumbuhan dan perkembangan tanaman lotus di kolam sains lebih maksimal dengan ciri lokasi yaitu kedalaman lumpur 62 cm dan kedalaman air 21 cm. Bunga lotus lebih banyak menghasilkan biji fertil dibandingkan dengan biji infertil yang menunjukkan tingkat keberhasilan penyerbukan tinggi.
Design of Integrated Science Electronic Book Temperature and Heat Material Loaded with Ethnoscience Batik Besurek Bengkulu Triana, Dini Fajar; Sutarno, Sutarno; Karyadi, Bhakti; Mahardiani, Lina; Mayub, Afrizal
Jurnal Ilmiah Pendidikan Fisika Vol 9, No 2 (2025): JUNE 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v9i2.15298

Abstract

Science learning in schools tends to be theoretical and less related to real contexts, so students have difficulty understanding the application of concepts in everyday life. One of the causes is the lack of teaching materials that integrate local wisdom. This study aims to examine the concepts of science in the local wisdom of making Batik Besurek to be developed as ethnoscience content in integrated science e-books and to determine the level of validity and student response to the product. The method used is research and development (R&D), according to Borg and Gall (1983), using the Model of Educational Reconstruction (MER) approach. Data were obtained through questionnaires, observations, and interviews. The results of the study showed that the process of making Batik Besurek contains the concepts of temperature and heat, expansion, changes in the state of matter, physical changes, heat transfer, and Black's principle, which can be integrated into the content of the Integrated Science Electronic Book. The developed electronic book obtained a very high level of validity with an average V index of 0.86 and a percent agreement of 89.27%. The students' response to the book was also excellent, with an average percentage of 89.42%. The results concluded that the Integrated Science electronic book containing the ethnoscience of Batik Besurek Bengkulu was considered valid teaching material worthy of being tested for effectiveness in future research.
Seafood Innovation Processing Octopus into Flour and Proximate Composition Analysis as Highly Nutritious Food Sari, Ayu Shinka Permata; Karyadi, Bhakti; Nursa'adah, Euis; Nurhamidah; Wardana, Rendy Wikrama; Pursitasari, Indarini Dwi
Al Jahiz Vol 7 No 1 (2026): Al-Jahiz: Journal of Biology Education Research, January-June 2026 (In Progress)
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan UIN Jurai Siwo, Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32332/al-jahiz.v7i1.11202

Abstract

Kaur Regency has abundant marine resources, particularly Octopus vulgaris. According to data from the local Fisheries Service, octopus production in 2023 reached 349,310 kg. However, utilization remains limited to dried products. An alternative innovation is processing octopus into flour, which offers high nutritional value, longer shelf life, and broader applications as a raw material for various food products. This study aimed to produce octopus flour and analyze its proximate composition. Fresh octopus samples were selected, cleaned, boiled, sliced, and sun-dried until completely dehydrated. The dried material was then ground into powder and stored in airtight containers. Proximate and mineral analyses were conducted at the Biology Laboratory, University of Bengkulu, following SNI 01-2715-1996 standards. The macronutrient analysis showed that fat content was 8.19%, meeting SNI Class II standards (<10%). Protein content reached 32.41%, while carbohydrate content was 7.08%. For micronutrients, calcium content was 0.15%, meeting SNI Class I standards (>0.1%), magnesium content was 0.87%, and iron content was 5,412 ppm. Additional nutritional analysis indicated moisture content of 1.96%, fiber content of 0.73%, and ash content of 4.2%, all complying with SNI Class I criteria. In conclusion, octopus flour produced from local resources meets SNI Class I and II standards for macronutrients, micronutrients, and other nutritional parameters, demonstrating its potential as a nutritious and durable alternative food ingredient.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Rahman Singkam ACENG RUYANI Adriataspen, Milzen Afrizal Mayub Alif Yanuar Zukmadini Alif Yanuar Zukmadini anjelie, Anggi Apriansyah, Rapi Aprina Defianti ardana, Rendy Wikrama W Arestu, Olyvia Oshi Ariefa Primair Yani Ariefa Primair Yani Arrosid, Muhammad Reza Arsela Eko Listiono As-Salimah, Ainun Mardiyah Asrati, Sirtika Aswin, Pani Bambang Prayogo, Bambang Bramastia Budiyanto Budiyanto CHOIRUL MUSLIM Dara, Niki Dwi Dia Defianti, Aprina Deni Parlindungan Detty Fitriani Devicawati, Devicawati Dewi, Novi Ratna Ekaputri, Rendi Zulni Elsi Adelia Fitri Elza Heryensi, Elza Heryensi Endang Widi Winarni Endang Widi Winarni Erna Yunita Sari Euis Nursa’adah Fahmizal, Fahmizal Fanisah, Kiki Faritzah, Chika Putri Febrianti, Een Suci Fema Anggriani Fidia Fibriana Fira Pratiwi Firdaus, M Luthfi Hardiansyah, Akbari Haryono, M. Hasbi Henny Johan Henny Johan HERNANI - Heryensi, Elza ICE PURNAMAWATI Indarini Dwi Pursitasari Indra Sakti Irdam Idrus Irwan Koto, Irwan Irwandi Ansori Irwandi Ansori Iwan Setiawan Julianti, Apri Kasrina Kasrina Kurniasih, Septi Laberta, Tinu Lestari, Dita Indah Lina Mahardiani M. Lutfi Firdaus, M. Lutfi Marliansa, Meiredo Maulana, Yudi Mayub, Afrizal Meri Suterisni Muhammad Farid Mustika, Reni Neni Murniati Nirwana Novianjani, Mutiara Nur Farida Nurhamidah Nurma Yunita Indriyanti Nurohma, Siti Nursaadah, Euis Nursa’adah, Euis Panjaitan, Anton Parlindungan, Deni PUJI LESTARI Putriani, Eli Puyanti, Puyanti Raden Mohamad Herdian Bhakti Rahmadaniya, Novita Lola Rendy Wikrama Wardana Riezky Maya Probosari Rinda Fitri Handayani Riska, Dara Rochman, Syaiful Roleka Julia Marcellina Ronggo Waskito, Jefri Roni Sastiawan Rosdiantini, Rosros Ruyani , Aceng Sagita, Fitria Saputra, Fajar Eko Sari, Ayu Shinka Permata Sari, Ega Dwi Permata Sari, Fenty Fitrian Sari, Nurma Yunita Sembiring, Evata Disolva br Setiawati, Nindya Puri Shabrina, Annida Nurul Sihite, Nadia Okta Kristiana Sri Irawati SRI RAHAYU Sudirman Sudirman Sukarso, A.A. Sumiyati - Sutarno Sutarno Sutarno Sutarno, M Sutarno, M. Syaiful Rochman Taufik, Annisa Novianti Triana, Dini Fajar Uliyandari, Mellyta Umaya Utami, Gita Nita Wahyuningsih, Endah Tri Wardana, Rendy Wikrama Wiryono Wiryono Wiwit Trisnawati Yani, Rita Fitri Yennita Yosie Andriani Yulianingsih, Elysabet Yulinda Fitriani Zahrani , Arifah