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The presence and characteristics of microplastics in local salt industry production in Muna Regency in 2025
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Researchers analyzed locally produced salt from Muna Regency, Indonesia, and found microplastic contamination in all 12 samples tested. The dominant polymer types were polyethylene and polypropylene in fragment and fiber forms, with contamination attributed to both marine pollution and post-production handling processes such as transportation and packaging.
Microplastics are environmental contaminants increasingly found in seafood-based products, including table salt. This study aims to identify the presence, characteristics, and types of microplastic polymers in salt produced by local industries in Muna Regency in 2025. This study uses a descriptive observational design with laboratory testing and Fourier Transform Infrared Spectroscopy (FTIR) analysis. Sampling was conducted using purposive sampling on 12 salt samples, consisting of nine samples at various stages of processing and three finished salt samples marketed. Analisis data Dila Kukan secure univariate. The research results showed that all salt samples were contaminated with microplastics, with a total of 57 particles found. The microplastic concentration ranged from 0.008–0.04 mg/kg, with an average value of 0.019 mg/kg. The microplastic shapes found were dominated by 29 fragment particles and 28 line particles, indicating secondary microplastics. The most dominant microplastic color was black, followed by transparent and other colors. FTIR analysis results showed that the types of microplastic polymers identified were Polyethylene (PE) and Polypropylene (PP), with PE dominating in most samples. The presence of microplastics in salt is influenced by marine environmental pollution as well as post-production processes such as transportation and packaging, thus efforts are needed to control them in order to minimize exposure risks for consumers.
More Papers Like This
The presence and characteristics of microplastics in local salt industry production in Muna Regency in 2025
AI summary Read the abstract
Researchers analyzed salt samples from local producers in Muna Regency, Indonesia, and found microplastic contamination in all 12 samples tested. The particles were primarily polyethylene and polypropylene fragments and fibers, with concentrations ranging from 0.008 to 0.04 mg/kg. The study suggests that contamination comes from both marine pollution in the source seawater and post-production processes such as transportation and packaging.
The presence and characteristics of microplastics in local salt industry production in Muna Regency in 2025
AI summary Read the abstract
Researchers analyzed salt samples from local producers in Muna Regency, Indonesia, and found microplastic contamination in all 12 samples tested. The particles were primarily polyethylene and polypropylene fragments and fibers, with concentrations averaging 0.019 mg/kg. The study indicates that marine pollution and post-production handling both contribute to microplastic presence in locally produced salt.
The Existence, Characteristics, Sources, and Impact of Microplastics in Salt Products in Indonesia
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This systematic literature review described the presence, characteristics, sources, and health impacts of microplastics in Indonesian salt products, finding consistent contamination across regions with PP, PE, and PA as dominant polymer types. The main contamination sources were polluted seawater used in salt production and unmanaged plastic waste near coastal evaporation ponds.
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Researchers surveyed 45 edible salt brands across western, central, and eastern Indonesia and found an average of 222 microplastic particles per kilogram — predominantly fibers under 1 mm — with western regions showing the highest contamination and regional polymer composition varying markedly by location.
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Researchers analyzed both traditionally produced and commercial branded sea salts from Indonesia and found microplastics in all samples tested. Traditionally produced salts contained the highest contamination levels, with up to 3,753 particles per kilogram, though branded salts also contained significant amounts. The study indicates that sea salt is a notable dietary source of microplastic exposure for consumers.
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