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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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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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Analyzing Financial Management and Investment Feasibility of MIXUE Beverage Franchise in Indonesia
The rapid growth of beverage franchises in Indonesia, particularly MIXUE with over 4,000 outlets, necessitates an in-depth examination of the financial management strategies underlying its success. This study aims to analyze the effects of working capital management, supply chain support, and operational cost efficiency on financial performance, as well as to evaluate the investment feasibility of the MIXUE franchise in Indonesia. A mixed-methods sequential explanatory approach was employed, uti...
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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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PHYTOCHEMICAL SCREENING AND ANTIBACTERIAL ACTIVITY OF SOFT CORAL Nephthea sp. EXTRACT ISOLATED AGAINST Escherichia coli
Setyaningrum, Tri Wahyu
; Nurulfadilah
; Candri, Dining Aidil
; Dharmayani, Ni Komang Tri
; Ghazali, Mursal
; Faturrahman
This study aimed to evaluate the antibacterial potential of Nephthea sp. extract against Escherichia coli and to analyze the phytochemical constituents present in Nephthea sp. using various solvents. The extraction process was carried out using the maceration method with three different solvents: n-hexane, ethyl acetate, and methanol. The resulting extracts were analyzed through phytochemical screening and antibacterial activity assays. The results showed that Nephthea sp. extract contained seve...
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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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INFLUENCE OF LACTATION STATUS ON DAILY BEHAVIOUR OF ADULT FEMALE LONG-TAILED MACAQUES (Macaca fascicularis) IN AN EX-SITU BREEDING COLONY
This study aimed to analyse the influence of lactation status on the daily behaviour of adult female M. fascicularis in a breeding colony at CV. INQUATEX, Bogor, Indonesia. To achieve this, ten adult females, five lactating and five non-lactating, were observed using the scan sampling method after a habituation period. Observations were conducted twice daily, in the morning (7–9 a.m) and the afternoon (2-4 p.m.), at 5-minute intervals for 14 consecutive days. During these sessions, behavioural c...
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Design and Implementation of Website-Based Reading Corner System Using Extreme Programming in Kunangan Village
Prasetyo, Bagas Wahyu
; Setiawan, Dedy
; Putri, Mutia Fadhila
; Prasetyo, Bagas Wahyu
; Setiawan, Dedy
; Putri, Mutia Fadhila
Rendahnya tingkat literasi masyarakat desa masih menjadi tantangan dalam peningkatan kualitas sumber daya manusia. Desa Kunangan telah memiliki pojok baca sebagai sarana literasi nonformal, namun pengelolaannya masih dilakukan secara manual sehingga akses informasi dan pemanfaatannya belum optimal. Penelitian ini bertujuan merancang dan mengimplementasikan sistem informasi pojok baca berbasis website untuk mendukung pengelolaan literasi desa secara lebih efektif dan terpusat. Metode pengembangan...
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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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