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All Journal Sinergi Jurnal Penelitian Pendidikan IPA (JPPIPA) GERVASI: Jurnal Pengabdian kepada Masyarakat Journal of Science and Technology Research for Pharmacy Biosaintifika: Journal of Biology & Biology Education Indonesian Journal of Chemical Science
Rakainsa, Senda Kartika
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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SOSIALISASI DAN DETEKSI DINI PENCEGAHAN HIPERKOLESTEROLEMIA SERTA PENGEMBANGAN PRODUK ROSELLA BAGI MASYARAKAT DESA BINAAN JATIREJO Widhihastuti, Endah; Rakainsa, Senda Kartika; Christijanti , Wulan
GERVASI: Jurnal Pengabdian kepada Masyarakat Vol. 8 No. 2 (2024): GERVASI: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM IKIP PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/gervasi.v8i2.7007

Abstract

Penelitian ini bertujuan untuk meningkatkan kesadaran dan pengetahuan masyarakat Jatirejo mengenai pencegahan hiperkolesterolemia melalui pemanfaatan Tanaman Obat Keluarga (TOGA) serta memberikan keterampilan pengolahan produk selai bunga rosella. Program pengabdian yang dilakukan meliputi sosialisasi, pelatihan pengolahan selai rosella, dan deteksi dini penyakit degeneratif. Hasil menunjukkan peningkatan pengetahuan masyarakat tentang penyakit degeneratif dan potensi pengembangan produk olahan dari rosella. Kondisi kesehatan masyarakat tergolong baik dimana terdapat 50% masyarakat Jatirejo memiliki tekanan darah normal, 93,3% memiliki gula darah normal, serta 76,67 memiliki kolesterol normal. Akan tetapi 62,5% responden laki laki dan 45,45% pada wanita memiliki kadar asam urat tinggi. Dampak dari kegiatan Pengabdian kepada Masyarakat ini adalah terpantaunya kondisi kesehatan Masyarakat Jatirejo, mengurangi resiko penyakit hiperkolesterolemia dengan peningkatan pengetahuan penyakit hiperkolesterolemia, serta keterampilan pengelolaan produk selai Rosella untuk peningkatan perekonomian warga.
Antihyperlipidemic Activity of Tamarind (Tamarindus indica) Extract on the Lipid Profile of Albino Rats Christijanti, Wulan; Susanti, R.; Rakainsa, Senda Kartika; Widyaningrum, Kartika; Mohamed, Mohd Salim Bin
Biosaintifika: Journal of Biology & Biology Education Vol. 16 No. 1 (2024): April 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v15i1.7579

Abstract

Tamarind are widely used as antioxidants, anti-diabetes, anti-hyperlipidemia, and anti-cholesterolemia. The aim of this research is to analyze the anti-hyperlipidemic activity of extracts of tamarind fruit pulp, seeds and leaves on the lipid profile of rats. Experimental research was designed with 20 male rats divided   Control (C), Tamarind leaves (TL), Tamarind fruit pulp (TF), and Tamarind seeds (TS) extracts, each 500 mg/kg of body weight. All of the groups were given standard feed and induced with lard at 3 ml/rat/day for 14 days. On day 15, the rats were continued to be induced with lard and were given extracts according to each group for 2 weeks. The data obtained such as rats’ body weight, level of cholesterol, HDL (high-density lipoprotein), LDL (low-density lipoprotein), triglycerides (TG) and Malondialdehyde (MDA)  were analyzed using anova (P<0.05) and the Duncan Multiple Range Test (DMRT). The results showed that each extract had a significant effect on cholesterol, HDL and MDA levels but not on body weight, LDL and triglycerides. Levels of MDA in the group with the extract were significantly lower than the control. Tamarind pulp, seeds and leaf extracts show antihyperlipidemic activity by reducing cholesterol and HDL levels. This can be the basis for using parts of the tamarind plant as a supplement for the community to maintain fat levels.
Improved recommender system using Neural Network Collaborative Filtering (NNCF) for E-commerce cosmetic product Subhan, Subhan; Syarif, Deny Lukman; Widhihastuti, Endah; Rakainsa, Senda Kartika; Sam'an, Muhammad; Ifriza, Yahya Nur
SINERGI Vol 29, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.1.014

Abstract

This study presents an enhanced recommender system tailored for e-commerce platforms specializing in cosmetic products. Traditional recommender systems often need help providing accurate and personalized recommendations due to the complexity and subjectivity inherent in cosmetic preferences. In e-commerce, personalized product recommendations are crucial to improving user engagement and driving sales. This paper presents an innovative approach to enhance recommendation systems by leveraging neural network collaborative filtering techniques for the cosmetic product domain. The proposed method integrates neural networks into collaborative filtering, namely neural network collaborative filtering with improved preprocessing step. To validate the effectiveness of our proposed system, extensive experiments were conducted using real-world e-commerce cosmetic datasets "eCommerce Event History in Cosmetics Shop".   Additionally, we evaluate the system's performance using historical e-commerce event data in cosmetics stores, demonstrating the system's effectiveness with mean reciprocal ratings (MRR) and normalized discount cumulative gain (NDCG). Evaluation Metrics of MRR and NDCG in this study got 0.56 and 0.60, respectively, with a split of the data: 70% train data, 15% validation data, and 15% test data. This study obtained better evaluation metrics than the previous study, which had an MRR of 0.31 and NDGC of 0.32. Furthermore, this model exhibits robustness against data sparsity and cold-start problems commonly encountered in e-commerce platforms. This research advances knowledge of recommendation systems and paves the way for more personalized and efficient online shopping experiences.
Antibacterial Activity Peel-off Mask Ethanol Extract of Pomegranate Peel (Punica granatum L.) Against Staphylococcus epidermidis and Staphylococcus aureus Evania, Arneta; Rakainsa, Senda Kartika
Journal of Science and Technology Research for Pharmacy Vol 3 No 1 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jstrp.v3i1.70338

Abstract

Background: Pomegranate peel (Punica granatum L.) is a part of the pomegranate fruit which is used as a traditional medicine for acne. The ethanol extract of pomegranate peel contains alkaloid, phenolic, flavonoid, and saponin compounds which have potential as antibacterial agents. Aim: This study aims to make peel-off masks of the ethanol extract of pomegranate peels and to determine the antibacterial activity of peel-off masks against acne-causing bacteria Staphylococcus epidermidis and Staphylococcus aureus. Material and Methods: The maceration method was used to obtain pomegranate peel extract with 96% ethanol solvent. Phytochemical screening is used to determine the content of the extract. Preliminary test of antibacterial activity was carried out using the disk diffusion method to determine the MIC value. The extract was then made into a peel-off mask preparation based on HPMC gel and PVA as a gelling agent. The peel-off mask was then evaluated physically and tested for its antibacterial activity by agar well diffusion. Results: Pomegranate peel (Punica granatum L.) extracted with 96% ethanol contains alkaloids, flavonoids, saponins, and phenolics which show antibacterial activity against Staphylococcus epidermidis and Staphylococcus aureus with a MIC value of 1.9 mg/ml. The results of observations of the physical properties of peel-off masks showed that the formulas that met the requirements were F(1) and F(2) with extract concentrations of 1.56% and 3.12%, respectively. The results of the antibacterial activity test of the peel-off mask of the ethanol extract of pomegranate peel had an inhibition zone of 9-15 mm in the medium to strong category. Conclusion: Based on the results of physical evaluation and antibacterial activity test, F(2) was the most optimum formula with inhibition against Staphylococcus epidermidis and Staphylococcus aureus of 13 mm and 14.5 mm, respectively.
Formulation and Sunscreen Activity of Cream Preparation from Iler Leaves Extract (Coleus scutellarioides (L.) Benth) Widhihastuti, Endah; Larasati, Dhatu Sekar; Priatmoko, Sigit; Rakainsa, Senda Kartika
Indonesian Journal of Chemical Science Vol. 13 No. 1 (2024)
Publisher : Prodi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v13i1.3583

Abstract

Paparan sinar ultraviolet memiliki efek positif seperti membantu produksi vitamin D, tetapi jika terlalu berlebihan dapat menyebabkan inflamasi akut, eritema, hiperpigmentasi, penuaan dini, dan kanker kulit. Oleh karena itu, diperlukan perlindungan tambahan yaitu tabir surya untuk menyerap atau memantulkan sinar UV. Penelitian ini bertujuan untuk menguji potensi ekstrak etanol dari daun iler (Coleus scutellarioides (L.) Benth) sebagai tabir surya dan memformulasikannya menjadi krim. Penelitian ini dilakukan dengan mengekstraksi simplisia daun iler dengan metode maserasi dan pelarut etanol 96%. Uji fitokimia dilakukan pada ekstrak  untuk menentukan kandungan metabolit sekunder. Ekstrak dengan berbagai konsentrasi diuji aktivitas tabir surya dengan menentukan nilai SPF, %Te, dan %Tp. Hasil penelitian menunjukkan bahwa ekstrak daun iler dengan nilai SPF terbaik adalah pada konsentrasi 0,3% dengan nilai SPF 29 yang berada dalam kategori tabir surya dengan perlindungan ultra. Formula krim F1 dengan kandungan asam stearat 17% dan trietanolamin 2% paling memenuhi evaluasi persiapan krim dengan nilai SPF 5 yang tergolong sedang, serta nilai %Te dan % Tp berturut 0,26359 dan 0,38828 yang tergolong sunblock.
Analysis of STEM Knowledge of Pre-Service Science and Mathematics Teacher Widiyatmoko, Arif; Putra, Anggyi Trisnawan; Astuti, Budi; Rakainsa, Senda Kartika; Sutarto, Hery; Mustikaningtyas, Dewi; Darmawan, Melissa Salma
Jurnal Penelitian Pendidikan IPA Vol 10 No 3 (2024): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i3.5411

Abstract

This research is motivated by the importance of STEM knowledge for pre-service science and mathematics teachers in the 21st century. This research aims to analyze the STEM knowledge of pre-service science and mathematics teachers. The research method was carried out by distributing questionnaires with STEM knowledge indicators to the sample. The sample in this research was 86. They were 59 pre-service science teachers and 27 pre-service mathematics teachers, with different years of education, namely the 1st, 2nd, 3rd, and 4th year of Universitas Negeri Semarang. The results of this research show that the average understanding of pre-service science and mathematics teachers regarding to the STEM-based learning in the definition aspect is 4.11, objectives are 3.94, benefits are 3.94, aspects are 3.69, components are 3.71, characteristics is 3.75, and implementation is 3.86. This proves that pre-service science and mathematics teachers' understanding of the definition of STEM-based learning is very good, while pre-service science and mathematics teachers' understanding of the objectives, benefits, aspects, components, characteristics, and implementation of STEM-based learning is good.
Co-Authors Anggyi Trisnawan Putra Arif Widiyatmoko, Arif Budi Astuti Christijanti , Wulan Darmawan, Melissa Salma Dewi Mustikaningtyas Evania, Arneta Hery Sutarto Larasati, Dhatu Sekar Martien Herna Susanti Mohamed, Mohd Salim Bin Sam'an, Muhammad Sigit Priatmoko Subhan Subhan Syarif, Deny Lukman Widhihastuti, Endah Widyaningrum, Kartika Wulan Christijanti Yahya Nur Ifriza