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BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan)
Published by Universitas Medan Area
ISSN : 25975269     EISSN : 2356458X     DOI : 10.31289
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Biolink focuses on the publication of the results of scientific research related to fields. This article is published in the internal and external academic community of the University of Medan Area (UMA) especially in the field of Biology. Biolink publishes scientific articles in the scope of biology that includes environmental biology, industrial biology and health biology. Published articles are the results of research articles, studies or critical and comprehensive scientific studies on important issues related to the field of biology.
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Articles 378 Documents
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BIODEGRADATION OF STYROFOAM WASTE BY HONGKONG MEALWORMS (Tenebrio molitor) Kurniani, Riska; Ruyani, Aceng; Johan, Henny; Defianti, Aprina; Yani, Ariefa Primair; Listiono, Arsela Eko
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15203

Abstract

This research aims to describe the ability of mealworms (Tenebrio molitor) to reduce styrofoam waste by observing the decrease in styrofoam weight and survival rate over one week. The method used is an experiment with a Completely Randomized Design (CRD) with 4 treatments (P0, P50, P100, P150) and 4 replications. The data was analyzed using descriptive statistics. The research stages include container preparation, larvae, stocking, feeding, and maintenance. The results show that the weight loss of styrofoam occurred at P50 (18.5%), P100 (22.75%), and P150 (36%). Meanwhile, the control group (P0) only experienced a weight loss of 1.5%. This indicates that the greater the number of T. molitor, the greater the weight loss of styrofoam. The highest survival rate for T. molitor was observed at P50, with a decrease in numbers of only 12.5%. At P150, the decrease was 16.8%, and at P100, it was 28.75%. This decrease is suspected to be caused by competition among T. molitor, population density, and a lack of nutrients despite the addition of supplementary feed. Based on the analysis of the results, it can be concluded that T. molitor is capable of reducing styrofoam waste, with the highest survival rate in the P50 group.
STUDY OF PHYSICAL AND CHEMICAL CONTENT OF TEMPEH FACTORY LIQUID WASTE IN BEKASI DISTRICT Azteria, Veza; Veronika, Erna; Irfandi, Ahmad
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15526

Abstract

The tempeh industry in Indonesia is a traditional household industry. The production waste is generally discharged directly into water bodies without prior treatment. This study aims to identify the level of pollution caused by tempeh liquid waste physically and chemically. Analysis was carried out with laboratory tests to determine the levels of pH, TSS, BOD, COD, colour, and odour produced. This study was conducted at 3 large tempeh industries in Bekasi from January to April 2025. The results of laboratory tests showed that the chemical and physical parameters did not meet the quality standards of the Minister of Environment Regulation No. 5 of 2014. COD measurements found 1 point that did not meet the quality standards of 629.47 mg / l, TSS inlet 221 mg / l and TSS outlet 65 mg / l, the highest BOD 22.50 mg / l due to the addition of chemicals to tempeh to accelerate fermentation. This study uses inferential statistical analysis. The pH parameters for both the inlet and outlet are <6.5. Discharge of waste directly into rivers results in an unpleasant odour from fermented soybeans and organic matter. Tempeh wastewater is recommended for processing organic fertiliser or biogas from anaerobic fermentation.
AMBIENT AIR POLLUTION IN INDUSTRIAL WORKPLACES: RISK ASSESSMENT OF POLLUTANT EXPOSURE AND RESPIRATORY HEALTH OUTCOMES Veronika, Erna; Simatupang, Meithyra Melviana; Irfandi, Ahmad; Azteria, Veza; Nitami, Mayumi
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15530

Abstract

Workers represent a population at risk of exposure to air pollutants in the workplace, rendering them vulnerable to various health impacts, particularly respiratory disorders. This condition is attributed to prolonged inhalation exposure over time. This study aims to assess the magnitude of health risks associated with occupational exposure to air pollutants and to identify respiratory complaints among workers. This study employed a descriptive quantitative design, utilizing risk assessment methods to estimate the exposure risk levels of carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), and total suspended particulate (TSP) in the workplace. The study population comprised production workers, selected via simple random sampling. The risk estimation indicated that the concentrations of CO, O₃, and TSP, were within acceptable safety limits. However, exposure to NO₂ exceeded safe thresholds, presenting non carcinogenic risks to workers with an average body weight of 66,48 kg, a daily exposure duration of 7,583 hours, and an annual exposure frequency of 236,99 days over a 12,85-year period. A significant proportion of workers reported respiratory symptoms and had previously been diagnosed with acute respiratory infections (ARI). Consequently, consistent use of personal protective equipment (PPE), particularly masks, is highly recommended to mitigate exposure to airborne pollutants.
SPATIAL DISTRIBUTION AND SOURCE IDENTIFICATION OF HEAVY METAL POLLUTION IN URBAN RIVER SEDIMENTS: A CASE STUDY FROM THE ACAI RIVER, JAYAPURA, PAPUA Bungasalu, Benny Abraham; Anou, Kezia Noviani; Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Martina Bunga; Maikson Molama
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15640

Abstract

The Acai River is a river that flows through densely populated areas, from households and salons to small industries such as tofu and tempeh factories. The community's waste disposal into the river pollutes the river. Studies and monitoring of river quality, especially in Indonesia, are still dominated by examining pollutant levels in river water. However, sediment is also important for in-depth study. This study aims to examine the spatial distribution of heavy metals in sediments in the Acai River located in the urban area of Jayapura, Papua Province. Sediment samples were taken from five locations representing areas with different anthropogenic activities, such as dense settlements, home industries, and small business areas. Then, the samples were dried by placing them in an oven at 100°C. Laboratory analysis was conducted to determine heavy metal levels using the XRF (X-ray Fluorescence) method. Results showed the highest Zn concentration reached 102.1 ppm in the downstream location, while Cr and Ni also showed significant accumulation at certain points. The distribution of heavy metal levels did not show a linear pattern along the river flow, indicating local contributions from human activities. These findings confirm that heavy metal pollution in urban rivers is more influenced by local inputs than by the river flow itself.
ASSESSMENT OF WATER QUALITY IN SITU TLAJUNG HILIR USING POLLUTION INDEX AND SAPROBIC QUOTIENT APPROACHES Shakira, Shakira; Istiana, Rita; Saputri, Dina Dyah
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15660

Abstract

Situ Tlajung Hilir is a natural lake in West Java, utilized by the local community to support livelihoods and contributing to the balance of the surrounding ecosystem. However, pollution from industrial and residential activities has raised concerns over its declining water quality. This study aims to assess the water quality of Situ Tlajung Hilir using the Pollution Index (PI) and Saprobic Quotient (SQ) methods. A descriptive quantitative approach with purposive sampling was conducted at four observation stations. Research activities included field observation, sample collection, measurement of physical, chemical, and biological parameters, and laboratory analysis. Instruments were calibrated prior to use. PI values ranged from 1.02 to 1.04, indicating a slightly polluted status based on the Decree of the Minister of Environment No. 115 of 2003. SQ values ranged from -0.10 to -0.79, reflecting moderate to fairly heavy pollution. The PI analysis showed that dissolved oxygen (DO) and temperature did not meet Class III water quality standards. SQ analysis revealed a dominance of Euglenophyceae and Paramecium (Ciliates), both indicators of organic pollution. In conclusion, the water quality of Situ Tlajung Hilir is categorized as slightly to fairly heavily polluted. Emphasizing the need for ongoing monitoring and improved waste management to protect the aquatic ecosystem.
A STUDY ON THE QUALITY AND CHARACTERISTICS OF CPO FROM MIXED OUTSPEC SOURCES Tarigan, Bahtra Yudha; Lubis, Zulkifli; Elisabeth, Jenny
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15548

Abstract

Outspec CPO is Crude Palm Oil (CPO) that does not meet standard CPO quality specifications. Outspec CPO can still be blended with standard CPO, provided that the resulting mixture continues to meet acceptable quality criteria. This study aimed to evaluate the effects of different blending levels of outspec CPO (0%, 1%, 3%, and 5%) and storage durations (0, 4, 8, and 12 days) on the quality of blended CPO. The research was conducted using an experimental method arranged in a factorial completely randomized design. The parameters measured to assess the quality of the blended CPO were: FFA (Free Fatty Acid), PV (Peroxide Value) and DOBI (Deterioration of Bleachability Index). The results showed that the highest quality was achieved with a 0% outspec CPO blend and 0 days of storage, yielding: FFA: 3.10%, PV: 0.10 meq/kg and DOBI: 2.97. Conversely, the lowest quality was observed with a 5% outspec CPO blend and 12 days of storage, resulting in: FFA: 5.31%, PV: 25.45 meq/kg and DOBI: 1.28. These findings indicate that a higher percentage of outspec CPO and longer storage durations lead to increased FFA and PV values, while the DOBI value decreases.
EFFECT OF FERMENTATION OPTIMIZATION WITH PH CONTROL ON ACTINOMYCETES ISOLATE AS ANTIBACTERIAL STAPHYLOCOCCUS AUREUS Joanne, Anastasia; Bahar, Meiskha; Muktamiroh, Hikmah; Setyaningsih, Yuni
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 10 No. 2 (2024): February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v10i2.10529

Abstract

Actinomycetes are Gram-positive bacilli noted for their secondary metabolites that are effective as antibacterials. Production of the antibacterial compounds is determined by nutrition, temperature, pH, and fermentation time. This study aims to study the antibacterial activity of Actinomycetes isolates from Bogor Botanical Gardens soil by fermentation optimization with pH control on the 3rd, 4th, and 5th day against the growth of Staphylococcus aureus bacteria. Actinomycetes isolates were inoculated on Starch Casein Agar (SCA) and fermented in liquid media containing 7 g glucose, 14 g mannitol, 14 g peptone for 5 days with the pH controlled within the range of 6.2–6.8. Antibacterial test method against S.aureus using well diffusion method with Nutrient Agar (NA) media. The inhibition zone diameter was measured every 24 hours and and the results obtained were 3.73 mm; 6.05mm; and 5.34mm. Those data were analyzed using the Kruskal-Wallis test and then continued with the Mann Whitney test which had significant differences between groups. The conclusion of the study is Actinomycetes isolates have antibacterial potential against the growth of S. aureus with the largest average diameter of inhibition zone in the 4th day fermentation group, which had moderate inhibition.
ACTIVITY TEST OF BESTSELLING MOISTURIZERS ON SHOPEE IN TREATING SKIN PROBLEMS Dasopang, Eva Sartika; Siahaan, Desy Natalia; Saputri, Muharni; Irnabila, Salsa
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 10 No. 2 (2024): February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v10i2.10704

Abstract

Shopee is an e-commerce widely used by Indonesians to buy and sell products and can shop safely. Shopee shows that in 2020, moisturizers was the top selling product in the beauty category. The moisturizers sold have different ingredients, come from many brands, and have different price points. The objective of the study is to compare the 3 best-selling moisturizers in the shopee category that are more effective in improving skin problems. This study was a quantitative study using a true experimental design with a posttest only control group design consisting of 4 groups, namely 3 groups using 3 best-selling moisturizer brands based on the shopee category and 1 control group. The sample of this study was selected based on the inclusion criteria consisting of 20 volunteers and the test was conducted for 4 weeks of application on the volunteers' skin by looking at the measured parameters of moisture, pores, blemishes and wrinkles. The results showed that the activity test of moisturizer A had a faster recovery in increasing moisture content (54.8%), shrinking pore size (23.8%), reducing blemishes (19.9%) and wrinkles 28.9%.
ANALYSIS OF MINERAL CONTENT IN ZAM-ZAM WATER CIRCULATION IN PADANGSIDIMPUAN CITY Harahap, Fatma Suryani; Pohan, Heni Mulyani; Siregar, Rabiyatul Adawiyah; Elisa, Elisa; Lubis, Jalilah Azizah; Latifah, Nur
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 10 No. 2 (2024): February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v10i2.10933

Abstract

This research was motivated by the existence of Zam-zam water trade in Padangsidimpuan City, while the Saudi Arabian government prohibited the export of Zam-zam water. This causes people to suspect that the quality of Zam-zam water circulating in the market is not the same as the Zam-zam water found in Mecca. Therefore, research needs to be carried out to answer these concerns. This research aims to analyze the mineral content of labeled packaged Zam-zam water circulating in Padangsidimpuan City compared with Zam-zam water brought from Mecca City. The mineral concentrations tested were sodium and chloride. This research uses laboratory experimental methods, including quantitative analysis. According to the type of research, the data analysis technique used is to compare the concentration of each mineral in the water labeled Zam-zam with the mineral concentration in the Zam-zam water used as a control. The research results showed that Zam-zam water obtained from Mecca City contained 42.4 mg/L chloride, 2.06 mg/L sodium, while the labeled Zam-zam water circulating in Padangsidimpuan, namely sample 1, contained 160.7 mg/L chloride. sodium 2.06 mg/L in sample 2 contains 50.5 mg/L chloride, sodium 2.17 mg/L. The three Zam-Zam samples circulating in Padangsidimpuan that have been tested show that the quality of Zam-Zam water is suitable for consumption based on determining a good water quality test, namely at the suitability threshold.
INVENTORY OF INVASIVE INSECT SPECIES IN COBAN TALUN, BATU CITY Saputri, Priska Anggun; Putri, Jihan Fahira Adinda; Zahwa, Amirah Rusdanti; Prasetyaningsih, Dyah; Afifah, Nurul; Denatalia, Sherlita Crisne; Fardhani, Indra
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 10 No. 2 (2024): February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v10i2.11010

Abstract

Insects are the greatest number of animal species on earth. Invasive species are insects that are non-native to a particular area, and negatively affect other organisms in their ecosystem. This study examines the diversity of invasive insect species with the aim of determining the diversity of invasive insect species found in Coban Talun, Batu City, effective and sustainable invasive insect control strategies, as well as conservation actions that need to be taken to maintain the balance of the ecosystem in Coban Talun. This study used a descriptive method using exploration techniques at three observation locations to collect data. This method used was observation of the focus of the problem under study, namely invasive insects which are the object of research. The data collection technique was carried out by exploring the location under study by observing, documenting, describing and identifying specimens using various literature. The results of the study obtained were the discovery of several types of invasive insects including black cockroaches (Phyllodromica maculata), large heath butterflies (Coenonympha tullia), green grasshoppers (Tettigonia viridissima), flies (Musca domestica), Mexican bean beetles (Epilachna varivestis), and soldier beetles (Rhagonycha recta). Invasive types of insects need population control by using natural insecticides so that the ecosystem in Coban Talun remains balanced.

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