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61,005 resultsShowing papers similar to Mechanical Grinding of Spices in Grinders with Polymeric Burrs and Transfer of Microplastics to Food
ClearSpices under the microscope: First detection and characterization of microplastics in turmeric, black pepper, and chili
Researchers detected microplastics for the first time in commonly consumed spices including turmeric, black pepper, and chili purchased from markets in Iran. The study found that bulk (loose) spice samples contained higher microplastic concentrations than packaged ones, with fragments and fibers being the most common particle types, identified by Raman spectroscopy as common polymers.
Determination of particle abrasion through milling with five different salt grinders – a preliminary study by micro-Raman spectroscopy with efforts towards improved quality control of the analytical methods
Researchers tested five salt grinders with plastic and ceramic burrs using micro-Raman spectroscopy, finding that plastic-burred grinders released thousands of polyoxymethylene and PMMA particles per 0.1 g of salt, far exceeding contamination from ceramic grinders. Even reference salt contained 423 plastic particles per 0.1 g before grinding, highlighting food processing equipment as a significant source of microplastic contamination.
Determination of particle abrasion through milling with five different salt grinders – a preliminary study by micro-Raman spectroscopy with efforts towards improved quality control of the analytical methods
Researchers used micro-Raman spectroscopy to measure whether plastic and ceramic grinding burrs in salt mills shed microplastic particles into the salt during milling. Plastic burr mills released significantly more microplastic particles than ceramic ones, confirming that everyday food processing equipment can be a source of microplastic contamination in what we eat.
Determination of particle abrasion through milling with five different salt grinders – a preliminary study by micro-Raman spectroscopy with efforts towards improved quality control of the analytical methods
Researchers used micro-Raman spectroscopy to measure whether plastic and ceramic grinding burrs in salt mills shed microplastic particles into the salt during milling. Plastic burr mills released significantly more microplastic particles than ceramic ones, confirming that everyday food processing equipment can be a source of microplastic contamination in what we eat.
Investigating microplastic release from plastic grinder heads during salt grinding
**TLDR:** Researchers found that plastic salt grinders release thousands of tiny plastic particles (called microplastics) into your salt when you grind it—with some grinders releasing over 15,000 particles per small container of salt. This means people may be eating more plastic particles than previously thought, since the grinder itself creates new plastic contamination beyond what's already in food from environmental sources. The study suggests using more durable materials for food grinders could help reduce how much plastic we accidentally consume.
Preliminary observation of microplastic contamination in some spice-salt samples purchased in Hanoi city
Researchers analyzed microplastic contamination in spice-salt samples purchased in Hanoi, Vietnam, finding concentrations ranging from 320 to 1,880 particles per kilogram, with fibers comprising 99% of particles and blue, red, and black colors predominating, representing an early characterization of microplastic exposure through seasoning products.
Microplastics retrieval from commercial rice brands in india: Characterization, dietary exposure, and risk assessment
Researchers detected and characterized microplastics in commercial rice brands from India for the first time, finding contamination in a staple food consumed by hundreds of millions of people. Fiber and fragment morphotypes dominated, with polymer identification confirming synthetic plastic rather than processing artifacts.
Microplastic Pollution in Table Salts from China
Researchers analyzed table salts produced in China and found microplastics contaminating samples from multiple salt types, suggesting that salt production processes and source water quality influence the extent of microplastic contamination in a common food ingredient.
Occurrence of microplastics in foodstuffs and the factors that affect their migration
Researchers investigated microplastic migration into cheese, cured meat, and honey under realistic food storage conditions, examining how factors such as packaging material, contact time, and food matrix properties influence the extent of contamination.
Microplastic Contamination and Polymer Characteristics in Meatballs as Indicators of Food Safety in Kambu District, Kendari City, Indonesia
Researchers tested meatball samples from street vendors in Kendari City, Indonesia, and detected microplastics in every sample analyzed. Fragment-shaped particles were the most common form, and polyethylene was the predominant polymer, pointing to plastic packaging and processing equipment as likely contamination sources. The average concentration was 6.90 mg/kg, highlighting potential food safety concerns for widely consumed street foods.
Microparticles in Table Salt: Levels and Chemical Composition of the Smallest Dimensional Fraction
Analysis of commercially available table salts found microplastic particles and non-synthetic micro-particles in multiple brands, with the smallest size fractions being most abundant and most difficult to identify. The study raises concerns about human dietary exposure to microplastics through a universally consumed food product.
Screening method for differentiation of plastic and non-plastic microparticles contaminating store-bought rice
Researchers tested five brands of store-bought rice and found plastic microparticles in all of them regardless of packaging type, with concentrations as high as 12 particles per gram of rice. Using simple optical microscopy and infrared spectroscopy, the study shows that a low-cost screening method can quickly distinguish true microplastics from other particles like rice starch or cellulose, an important step toward routine food safety monitoring.
Detection and Characterization of Microplastics in Commercial Salts in India
Researchers detected and characterized microplastics in commercial salts available in India, including rock salt, sea salt, and table salt varieties. The study found widespread microplastic contamination across salt types, raising food safety concerns given the ubiquity of salt as a dietary staple.
Assessment of microplastics in commercial meat: a comparison between raw and processed products
Researchers compared microplastic contamination in raw versus processed commercial meats, finding that processing steps can introduce or increase microplastic levels. The study highlights food processing as an underappreciated pathway for microplastic exposure in terrestrial animal products.
Microplastics contamination in selected staple consumer food products
Researchers in the Philippines found microplastics in common staple foods including sea salt, sugar, rice, and fish sauce, with sea salt having the highest contamination at about 471 particles per kilogram. PVC from processing equipment and PET from plastic packaging were the most common types found. This study provides direct evidence that people are consuming microplastics through everyday foods, raising questions about the safety of plastic materials used in food manufacturing and packaging.
Assessment of microplastics in commercial meat: a comparison between raw and processed products
Researchers investigated microplastic contamination in commercial meat products, comparing raw and processed forms to assess human dietary exposure. Microplastic particles were detected across multiple meat types, with processing steps influencing both the concentration and type of particles present.
Microplastic Contamination and Polymer Characteristics in Meatballs as Indicators of Food Safety in Kambu District, Kendari City, Indonesia
Researchers analyzed microplastic contamination in meatballs sold by street vendors in Kendari City, Indonesia, examining particle concentrations, shapes, and polymer types. The study found microplastics present across all samples, primarily as fibers and fragments, indicating that ready-to-eat street foods may represent a meaningful route of microplastic exposure for consumers.
Influence of Micro and Nanoplastics in Modern Food Chain: an Inevitable Intervention
This review examines the growing presence of microplastics and nanoplastics throughout the modern food chain, summarizing known entry points, concentrations in food commodities, and potential health consequences of regular human dietary exposure.
Microplastic Contamination and Polymer Characteristics in Meatballs as Indicators of Food Safety in Kambu District, Kendari City, Indonesia
Researchers analyzed meatball samples from street vendors in Kendari City, Indonesia, and found microplastic contamination in all ten samples tested. Concentrations ranged from 4.0 to 9.0 mg/kg, with fragment shapes and polyethylene as the dominant particle type and polymer. The findings suggest that plastic packaging and food processing equipment are likely sources of microplastic contamination in ready-to-eat street foods.
Evaluation of the presence of insoluble particles and microplastics in sea salts in Brazil
Researchers analyzed sea salts from Brazilian markets for the presence of microplastics and other insoluble particles. The detection of microplastics in commercially sold sea salt raises consumer exposure concerns, as salt is used universally in cooking and food processing.
Microplastic contamination and risk assessment in salts from India And Sri Lanka
Researchers analyzed microplastic contamination in commonly available salts from India and Sri Lanka, including sea salt, rock salt, and refined table salt. Microplastics were detected across most salt varieties, indicating that this staple condiment is a dietary route of human microplastic exposure in South Asia.
Risk assessment of microplastic in commercial salt sold in Malaysia
Researchers conducted a risk assessment of microplastics in commercial table salt sold in Malaysia, finding that contaminated seawater used during sea salt production introduces microplastics into a widely consumed daily food ingredient with potential adverse health effects.