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All Journal Jurnal Florea BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Sanitasi: Jurnal Kesehatan Lingkungan
Kisworo Kisworo
Program Studi Biologi, Fakultas Bioteknologi, Universitas Kristen Duta Wacana, Yogyakarta 55244
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Health Professions

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Pertumbuhan Cacing Sutra (Tubifex sp) Pada Substrat Lumpur, Pasir, dan Kombinasinya Allan Buddie Santoso; Kukuh Madyaningrana; Kisworo Kisworo
Florea : Jurnal Biologi dan Pembelajarannya Vol 9, No 1 (2022)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v9i1.10451

Abstract

The increase of freshwater aquaculture leads to the increasing demand for silkworms (Tubifex sp) as natural feed. Unfortunately, high demand of silkworm supply is not fully fulfilled yet because its availability is relied on natural catch. Cultivation of Tubifex sp. outside its natural habitats requires good information on substrates and feed. We aimed to study the effect of  mud, sand and their combination use as substrates in supporting Tubifex sp growth. This study used complete randomized design with 5 treatments, namely K1 (100% sand), K2 (100% mud), P1 (combination 75% mud-25%) sand, P2 (combination 50% mud-50% sand), and P3 (combination 25% mud-75% sand) with triplicates on each treatment. Research was conducted for 21 days using fermented chicken manure as feed. Tubifex sp growth was measured on biomass, number of individuals, and average body weight, while pH, temperature, dissolved oxygen and total organic matter were listed as measured environmental parameters. The use of sand and mud combination as substrate was better than a single sand or mud alone to support Tubifex sp growth. Combination of 75% mud and 25% sand showed the best growth of Tubifex sp as observed on biomass value of 13,244 g, 370 number of individuals, and average weight body of 2,741 mg. The application of a combination of sand and mud substrates has a potency to support the cultivation of Tubifex sp outside its native habitat.
QUALITY OF VERMICOMPOST AND VERMIWASH FROM HOUSEHOLD WASTE BASED ON SAGO PULP AND COW MANURE Kisworo Kisworo; Haryati B. Sutanto; Irene Putri Permatasari
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 2 (2026): Biolink February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i2.16114

Abstract

The processing of household organic waste through vermicomposting has the potential to produce fertilizers with higher nutrient content compared to conventional methods. This study aims to analyze the effect of adding sago pulp and cow manure as media on the quality of vermicompost and vermiwash derived from household organic waste using Eisenia fetida worms. The experiment was conducted using five treatments with five replications. Observed parameters included media moisture, temperature, pH, changes in color and texture, odor, earthworm biomass, and the contents of nitrogen (N) and phosphorus (P). Data were analyzed descriptively by correlating observational results with laboratory analyses of vermicompost and vermiwash. The results indicate that the treatment consisting of sago pulp with the addition of 50% household organic waste (SP+HOW 50%) produced nitrogen and phosphorus contents that met the requirements of SNI 7763:2024. Overall, the findings indicate that vermicomposting using sago pulp and household organic waste can be applied as a sustainable approach to organic waste management while producing organic fertilizer derived from local resources.
Konsentrasi pencemar timbal (Pb) pada sayur lalapan di pasar tradisional dan supermarket di Kota Yogyakarta Tamariska Sharon Christa Bella; Djoko Rahardjo; Kisworo Kisworo
Sanitasi: Jurnal Kesehatan Lingkungan Vol. 16 No. 2 (2023): Agustus 2023
Publisher : Poltekkes Kemenkes Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29238/sanitasi.v16i2.1865

Abstract

Lalapan is a popular food consumed. The increase in population, industrial activities, transportation, use of chemical fertilizers and pesticides has led to lead (Pb) pollution in the environment, contaminating vegetables that are to be consumed and posing health risks. Therefore, research was conducted regarding the analysis of Pb pollutant concentrations in lettuce, basil and cucumber sold in traditional markets and supermarkets in the city of Yogyakarta. Samples were extracted using 65% HNO3 and 37% HCl, and then the concentration of Pb in the samples was analyzed using Atomic Absorption Spectrophotometry. The research results showed that all types of vegetables sold in traditional markets and supermarkets have been contaminated with Pb with concentrations ranging from 0.418 to 1.575 mg/kg, with the highest Pb concentration was found in basil with an average of 1.5156 mg/kg. The average concentrations of Pb in lalapan sold in traditional markets and supermarkets, when compared to the quality standard set by SNI regulation (2009) for cucumber sold in supermarkets N, are still below the safe limit of 0.5 mg/kg for , while the rest have exceeded the quality standard limit. There are significant differences in the concentration of Pb pollutants in vegetables sold in markets and supermarkets, as well as based on sales location, type of vegetable, and vegetable source. The consumption pattern of vegetables ranges from 62-97 g/day and poses health risks as the RQ value is greater than 1. Additionally, it has the potential to cause cancer because ECR > E-4.
Co-Authors Allan Buddie Santoso Djoko Rahardjo Ester Esti Kunda Haryati B. Sutanto Irene Putri Permatasari Kukuh Madyaningrana Tamariska Sharon Christa Bella Timothy Wherrett