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Umar Tangke
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umbakhaka@gmail.com
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biosainstek@gmail.com
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Kampus UMMU Ternate Jl. KH. A. Dahlan No. 100, Kelurahan Sasa. Kecamatan Ternate Selatan Ternate-Maluku Utara
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JURNAL BIOSAINSTEK
Published by Universitas Muhammadiyah Maluku Utara
ISSN : -     EISSN : 2685676X     DOI : https://doi.org/10.52046/biosainstek
Core Subject :
Jurnal BIOSAINSTEK merupakan jurnal ilmiah yang diterbitkan oleh Univeritas Muhammadiyah Maluku Utara, dikelola oleh Program Studi Teknologi Hasil Perikanan Fakultas Pertanian sebagai sarana publikasi hasil penelitian mahasiswa, dosen dan peneliti dari instansi pemerintah maupun instansi swasta. Jurnal ini memuat artikel yang belum pernah dipublikasikan sebelumnya berupa artikel hasil penelitian atau penelitian terapan dengan bidang kajian EKSAKTA UMUM dan SAINS, meliputi kajian bidang KESEHATAN, KEHUTANAN, PERTANIAN, PERIKANAN, MIPA, BIOLOGI termasuk kajian tentang FLORA dan FAUNA dari segi ILMIAH, SOSIAL dan EKONOMI, serta bidang TEKNIK dan ilmu EKSAKTA lainnya. Semua artikel yang masuk akan melalui ‘proses "PEER-REVIEW’ dan di PUBLIKASI setelah memenuhi persyaratan sesuai pedoman penulisan. Penerbitan jurnal ini dilakukan sebanyak enam bulan sekali yaitu pada bulan Januari dan Juli.
Arjuna Subject : -
Articles 163 Documents
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The Relationship Between Room Sanitation, Vector Presence, Food Hygiene, and Waste Management and the Sanitary Condition of Passenger Ships Docking at Tobelo Port Roberto Cabu; Engganis Dadere
BIOSAINSTEK Vol 8 No 2 (2026): Jurnal BIOSAINSTEK
Publisher : UNIVERSITAS MUHAMMADIYAH MALUKU UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/biosainstek.v8i2.2799

Abstract

Passenger ships require continuous sanitation control because their enclosed spaces, passenger movement, food services, waste production, and vector risks may affect public health. This study examined factors associated with the sanitary condition of passenger ships docking at Tobelo Port, including room sanitation, vector presence, food sanitation, and waste management. A quantitative cross-sectional study was conducted from March to April 2026 involving five passenger ships and 43 crew members selected by total sampling. Data were obtained through direct observation and structured interviews. The analysis was performed descriptively and continued with logistic regression using a significance level of p < 0.05. The findings indicated that room sanitation was the factor most consistently associated with ship sanitary condition, with p = 0.01 in all observed ships. Meanwhile, vector presence, food sanitation, and waste management showed significant associations only on certain ships, reflecting differences in daily sanitation practices and operational management. Although waste management had the weakest statistical association, it remains essential to reduce environmental contamination and health risks. Therefore, sanitation improvement at Tobelo Port should focus on maintaining room sanitation, strengthening vector control, improving food handling practices, and ensuring safer waste management through routine inspection, crew guidance, and risk-based supervision.
Solution of Systems of Linear Equations Using Triangularization and Backward Substitution Dewi Maulut Fajar; Ruslan Laisouw
BIOSAINSTEK Vol 8 No 2 (2026): Jurnal BIOSAINSTEK
Publisher : UNIVERSITAS MUHAMMADIYAH MALUKU UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/biosainstek.v8i2.2800

Abstract

Linear equation systems are fundamental concepts in mathematics that play a vital role across various scientific fields. This study aims to examine and analyze solution methods for linear systems using triangularization and backward substitution techniques. The research employs a literature review approach with a qualitative descriptive method, sourcing data from various scientific texts, theses, and relevant journal articles. The results indicate that the triangularization process effectively transforms a linear system into an upper triangular matrix form, simplifying and accelerating the solution process. Subsequently, backward substitution systematically determines variable values starting from the last equation moving backward. The combined use of these methods proves to be effective, structured, and efficient, especially for systems with many variables. A linear system is considered simple if all variable values can be obtained with less effort and faster than before simplification. This research contributes to enhancing the understanding of the mathematical concepts and procedures for solving linear systems and supports the development of numerical algorithms in science and technology fields.
The Quality Analysis of Fresh Mackarel Tuna under Different Icing Durations in Cold Storage Based on pH and Organoleptic Values Vebiola Pesondolang; Febrina Olivia Akerina; Yubelina Hibata; Femsy Kour
BIOSAINSTEK Vol 8 No 2 (2026): Jurnal BIOSAINSTEK
Publisher : UNIVERSITAS MUHAMMADIYAH MALUKU UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/biosainstek.v8i2.2802

Abstract

Mackerel tuna (Euthynnus affinis) is one of the most widely consumed marine fish species in Tobelo, North Halmahera, Indonesia. Due to its highly perishable nature, maintaining freshness during postharvest handling is essential to preserve product quality and ensure consumer safety. This study aimed to evaluate the freshness of mackerel tuna during chilled storage using ice by assessing the changes in pH and organoleptic characteristics. The experiment was conducted from May to June 2025. Fresh fish were stored on ice and evaluated at 0, 4, 8, and 12 h after arrival at the laboratory. The pH was measured in triplicate, and the organoleptic quality was assessed by 30 untrained panelists based on the Indonesian National Standard (SNI) for fresh fish. The data were descriptively analyzed and presented in tables and figures. The results demonstrated that the pH of mackerel tuna decreased from 0 to 8 hours of storage, corresponding to the rigor mortis phase, and subsequently increased at 12 hours, indicating the onset of post-rigor biochemical changes. Organoleptic scores gradually declined during storage but remained within the acceptable range for fresh fish samples. The mean scores were 7.67–8.93 for eye appearance, 8.00–9.00 for gill appearance, 7.87–9.00 for surface slime, 7.80–8.80 for flesh appearance, 7.93–8.87 for odor, and 8.07–9.00 for texture appearance. All organoleptic values remained above the minimum acceptance score of 7.0 specified by the Indonesian National Standard (SNI), indicating that the fish maintained acceptable freshness throughout the 12-h storage period under iced conditions.

Page 17 of 17 | Total Record : 163

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