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Microencapsulation of Phycocyanin from Spirulina platensis by Freeze-Drying: Optimization of Maltodextrin–Soy Protein Matrices for Enhanced Stability and Antioxidant Functionality
Marlina, Dian
; Saputra, Ryan Werytama
; Aji Prasetyo, Takad Bagas
; Muhamad Ansory, Hery
; Aisiyah, Siti
; Purwaningsih, Desi
Phycocyanin, a natural blue pigment from Spirulina platensis, exhibits strong antioxidant activity but is highly unstable under light, heat, and pH variations, limiting its practical applications. This experimental study addresses the lack of systematic optimization data on maltodextrin–soy protein isolate (SPI) wall matrices for phycocyanin microencapsulation via freeze-drying. Phycocyanin was extracted using phosphate buffer and encapsulated at different maltodextrin:SPI ratios (9:1, 8:2, and...
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Physicochemical and Organoleptic Characteristics of Ginger Jelly Candy using Secang (Caesalpinia sappan L) as Natural Dye
Agrobioteknologi
(2026)
Jelly candy is a food product that has a chewy texture. One type of jelly candy that is popular with the public is ginger candy, but some people don't like ginger candy because ginger candy has a very spicy taste and low vitamin C content. Based on these problems, it is necessary to substitute it with lemongrass extract to increase the vitamin C content and minimize the spicy taste of the red ginger jelly candy. There are candies on the market that still use synthetic food coloring which can be...
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Android-Based Tourism Geographic Information System For Blitar Raya Utilizing Google Maps API and Kotlin
Pratama, Dimas Adi
; Santi, Indyah Hartami
; Febrinita, Filda
; Pratama, Dimas Adi
; Santi, Indyah Hartami
; Febrinita, Filda
JUISI : Jurnal Ilmiah Sistem Informasi
Vol 4
, No 1
(2026)
The limited availability of integrated digital tourism information in Blitar Raya has made it challenging for visitors to plan their travel routes efficiently. This research aims to develop an Android-based Geographic Information System (GIS) that integrates the Google Maps API with the Bellman-Ford algorithm to optimize the shortest travel routes among tourism destinations. The system was developed using the Rapid Application Development (RAD) methodology, emphasizing user involvement through i...
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Pengaruh Leverage, Ukuran Perusahaan, Profitabilitas, dan Likuiditas Terhadap Pembayaran Dividen Pada Perusahaan LQ45 Periode 2023-2024
Dividend payment is an important financial decision that reflects a company’s performance and prospects from the perspective of investors. However, companies included in the LQ45 index still experience fluctuations in dividend payment policies from year to year. This study aims to analyze the effect of leverage, firm size, profitability, and liquidity on dividend payments of companies listed in the LQ45 index on the Indonesia Stock Exchange (IDX) during the 2023–2024 period. This research employ...
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In Vitro Degradation and Mechanical Performance of Mg AZ31B for Biodegradable Bone Implant Applications
Magnesium AZ31B is a promising biodegradable implant material due to its mechanical properties comparable to natural bone and its ability to degrade in physiological environments, potentially eliminating the need for secondary surgery. However, its rapid degradation can cause a significant loss of mechanical integrity, limiting its use in load-bearing applications. This study investigates the evolution of mechanical properties and surface characteristics of AZ31B during in-vitro immersion in Sim...
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TESTING OF DEXAMETHASONE TOXICITY TO CARDIOMETABOLIC AND MALFORMATION OF ZEBRAFISH (Danio rerio Hamilton, 1882) LARVAE
This study aims to evaluate the toxicity effects of dexamethasone on survival, hatching, cardiometabolic function, and the emergence of malformations in zebrafish larvae (Danio rerio), a vertebrate model organism. The study was conducted during the embryonic to early larval phase (0 – 96 hpf) using an in vivo experimental design with complete randomization, following the Zebrafish Embryo Toxicity Test (ZFET) approach, in accordance with OECD 236 guidelines. Zebrafish embryos were exposed to va...
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Miniature Medical Car Didukung dengan Pulse Arm Band Berbasis Algoritma XGBoost dalam Deteksi Pola Abnormal Detak Jantung
Walidin, Adamsyach Prana
; Kiswanto, Dedy
; Zai, Tri Sapta Warman
; Sagala, Fafmi
; Walidin, Adamsyach Prana
; Kiswanto, Dedy
; Zai, Tri Sapta Warman
; Sagala, Fafmi
Peningkatan kasus gangguan kardiovaskular menuntut adanya sistem pemantauan detak jantung yang tidak hanya akurat, tetapi juga mampu memberikan respons cepat terhadap kondisi abnormal. Penelitian ini bertujuan mengembangkan sistem pemantauan detak jantung berbasis Internet of Things (IoT) yang terintegrasi dengan algoritma Extreme Gradient Boosting (XGBoost) untuk mendeteksi pola detak jantung abnormal secara real-time serta memicu respons otomatis melalui Miniature Medical Car. Metode penelitia...
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Sistem Informasi Penjualan Toko Dmelz Berbasis Web Menggunakan Laravel
Transformasi digital menjadi kebutuhan penting bagi usaha kecil untuk meningkatkan efisiensi dan daya saing. Toko Dmelz, sebuah usaha kuliner rumahan, awalnya masih mengandalkan sistem penjualan manual melalui media sosial, yang sering menimbulkan kesalahan pencatatan, keterlambatan proses, dan kesulitan dalam pembuatan laporan. Penelitian ini bertujuan merancang dan mengembangkan sistem informasi penjualan berbasis web untuk mengotomatisasi proses pemesanan, pengelolaan produk, dan pelaporan pe...
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Design of a Web-Based Regional Tax Document Archiving Information System
Anugrah, Roki Aula
; Friansyah, Ilham Gantar
; Waidah, Dina Fara
; Anugrah, Roki Aula
; Friansyah, Ilham Gantar
; Waidah, Dina Fara
Manajemen arsip dokumen pajak daerah memegang peranan penting dalam mendukung administrasi dan pelayanan publik di Badan Pendapatan Daerah (Bapenda). Sistem pengarsipan manual yang masih digunakan menimbulkan berbagai permasalahan, seperti risiko kehilangan dokumen, kerusakan arsip fisik, serta keterlambatan dalam proses pencarian. Penelitian ini bertujuan untuk merancang sistem informasi arsip dokumen pajak daerah berbasis web pada Bapenda Kabupaten Karimun. Pendekatan kualitatif dengan metode...
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Implementation of a Decision Support System to Improve the Objectivity of Selecting High-Aching Students Using the SAW Method at SMAS PGRI Kurnia
Akmal, Fadlan Muhammad
; Gustafi, Muhammad Fauzan
; Akmal, Fadlan Muhammad
; Gustafi, Muhammad Fauzan
Pemilihan siswa berprestasi di sekolah seringkali dilakukan secara manual dan berpotensi menimbulkan subjektivitas dalam pengambilan keputusan. Penelitian ini bertujuan untuk menerapkan Sistem Pendukung Keputusan (SPK) menggunakan metode Simple Additive Weighting (SAW) guna meningkatkan objektivitas, transparansi, dan efisiensi dalam proses seleksi siswa berprestasi. Penelitian dilakukan pada satu sekolah dengan melibatkan 20 alternatif siswa dan empat kriteria penilaian yang telah ditentukan bo...
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