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61,005 resultsShowing papers similar to Microplastics retrieval from commercial rice brands in india: Characterization, dietary exposure, and risk assessment
ClearMicroplastics 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 contamination in Indian rice: A comprehensive characterization and health risk assessment
Researchers found microplastics in all samples of Indian rice tested, averaging about 30 particles per 100 grams, with polyethylene and PET being the most common types. The study estimated daily microplastic intake from rice consumption for men, women, and children, highlighting that this dietary staple is a potential pathway for plastic particles to enter the human body.
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.
Are we eating microplastics with our staple food? A pioneering study of microplastic contamination in store-bought rice and cooked rice in Bangladesh
In the first study of its kind in Bangladesh, researchers analyzed microplastic contamination in 15 commonly consumed store-bought rice varieties in both raw and cooked forms. The study found microplastics present in rice samples and estimated potential human exposure through this staple food, highlighting a previously overlooked dietary source of microplastic intake.
Spices 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.
Methods for identifying microplastics in food systems
Identifying microplastics in food is technically challenging because food matrices are complex and particles can be very small. This review covers the main methods scientists use — from simple visual inspection to sophisticated techniques like Raman spectroscopy and infrared imaging — and evaluates their strengths and limitations in the context of food safety. The authors conclude that Raman microscopy and Fourier-transform infrared spectroscopy are currently the gold-standard approaches for detecting and confirming the chemical identity of microplastics in food and agricultural products.
Analysis of microplastics in table salt by FT-IR microscopy
This Japanese-language study used FT-IR microscopy to detect microplastics in three brands of Japanese sea salt, finding polypropylene and polyethylene particles above 20 micrometers in all samples. The study demonstrates that sea salt produced from different coastal regions already contains microplastics, representing a direct dietary exposure pathway.
Plastics aplenty in paddy lands: incidence of microplastics in two rice cultivars of Kerala, India, and its impact on primary producers found in paddy fields
This study reports microplastic contamination in paddy fields and two rice cultivars in Kerala, India, raising concerns about human dietary exposure to microplastics through staple crops. The presence of microplastics in rice cultivation environments represents an understudied pathway for human ingestion.
Visualized analysis of microplastics in residents' diets and regional investigation of China
Researchers developed an infrared spectral imaging method to detect microplastics in complex food samples without destroying them, then used it to survey dietary microplastic exposure across regions of China. They found microplastics present in a wide variety of foods, with concentrations varying by food type and geographic location. The study provides new data on how much microplastic people may be consuming through their everyday diets.
Recognition and detection technology for microplastic, its source and health effects
This review summarizes current knowledge about detecting microplastics and their effects on human health, covering methods like FTIR spectroscopy and Raman imaging. The authors highlight that micro- and nanoplastics can cause a range of health problems including oxidative stress, reduced reproductive ability, inflammation, and damage to the circulatory and respiratory systems. The review emphasizes the urgent need for better detection methods so that researchers and regulators can accurately assess how much microplastic people are actually exposed to.
Detection methods of micro and nanoplastics
This review surveyed current detection methods for micro- and nanoplastics across environmental and food matrices, comparing techniques like FTIR, Raman spectroscopy, and mass spectrometry for identifying these emerging contaminants.
Identification and Evaluation of Microplastics from Tea Filter Bags Based on Raman Imaging
Researchers identified and evaluated microplastic release from commercial tea filter bags using Raman imaging combined with chemometrics. The study found that up to 94% of tested filter bags released microplastics after soaking, with particles identified as matching the bag materials, highlighting a potential route of microplastic exposure through everyday beverage consumption.
Analytical tools in advancing microplastics research for identification and quantification across environmental media: from sample to insight
Researchers reviewed the analytical tools most commonly used for identifying and quantifying microplastics, focusing on FTIR and Raman spectroscopy as the two primary methods. The review compared their strengths and limitations and provided guidance for choosing between them based on particle size, sample matrix, and research objectives.
Recent Advances in Spectroscopic Techniques for the Analysis of Microplastics in Food
This review summarizes recent advances in spectroscopic techniques for detecting and identifying microplastics in food products. Researchers evaluated methods including FTIR, Raman spectroscopy, and emerging hyperspectral imaging approaches for analyzing microplastics of various sizes, shapes, and materials. The study highlights the strengths and limitations of each technique and identifies gaps in our ability to reliably assess microplastic contamination in the food supply.
Analysis of microplastics in food, mineral water and in mineral water process lines by FTIR and Raman microspectroscopy
Researchers developed standardised sampling protocols and analytical methods using FTIR and Raman microspectroscopy to detect microplastic particles below 10 µm in beverages, soluble foods, and mineral water production lines. The study traced sources and entry pathways of microplastics into food products and identified preventive measures applicable to industrial processing environments.
A Critical Review on Current Challenges in the Analysis of Microplastics in Food Samples
This review identifies and evaluates the key analytical challenges in detecting and measuring microplastics in food — from sample digestion and extraction to identification using FTIR, Raman spectroscopy, and scanning electron microscopy. The authors highlight that the four most commonly found polymer types in food are polyethylene, polystyrene, PET, and polypropylene, and that method inconsistencies make it difficult to compare results across studies. Improving standardized analytical protocols is critical for accurate dietary exposure assessment and for understanding the true health risks of microplastic ingestion through food.
Authentication of Microplastic Accumulation in Customary Fruits and Vegetables
Grapes, bananas, brinjal, and potato purchased from a local market in Tamil Nadu, India were analyzed for microplastic accumulation, with particles detected in all four food items at sizes ranging from 0.002 to 0.01 mm, confirmed by FTIR spectroscopy and scanning electron microscopy. The study provides early evidence that commonly consumed fruits and vegetables can carry microplastics from the surrounding agroecosystem.
Optimizing microplastic analysis through comparative FTIR and raman spectroscopy: Addressing challenges in environmental degradation studies
Researchers compared FTIR and Raman spectroscopy for analyzing degraded microplastic polymers in environmental samples, evaluating how polymer aging affects identification accuracy. The study found that spectral databases based on pristine polymers can misidentify weathered microplastics, calling for updated reference libraries.
Laboratory assessment for determining microplastics in freshwater systems – characterization and identification along Somesul Mic River
Researchers applied Raman and FTIR spectroscopy alongside microscopy to characterize microplastics in water and sediment samples from the Somesul Mic River in Romania, identifying multiple polymer types and assessing which analytical methods worked best. Developing reliable, standardized laboratory methods for detecting microplastics in freshwater is essential for generating comparable data on environmental contamination levels.
Optimizing microplastic analysis through comparative FTIR and raman spectroscopy: Addressing challenges in environmental degradation studies
This study optimized microplastic analysis by comparing FTIR and Raman spectroscopy approaches for identifying degraded polymer particles in environmental samples where photooxidation and mechanical fragmentation have altered spectral signatures. A combined spectroscopy approach outperformed either technique alone for accurately identifying degraded microplastics in complex environmental matrices.
Analysis of microplastics in food, mineral water and in mineral water process lines by FTIR and Raman microspectroscopy
Researchers developed validated FTIR and Raman microspectroscopy methods for detecting microplastic particles below 10 micrometers in food, mineral water, and along mineral water production lines, creating standardized sampling protocols to identify contamination sources and entry points during food processing.
Microplastic content of over-the-counter toothpastes from India: an in-vitro study
Researchers analyzed 20 popular over-the-counter toothpastes from the Indian market and found microplastic compounds present in all samples. Using infrared spectroscopy, they identified polyamides, polyethylene, and polypropylene across all tested brands, highlighting a potential daily exposure route to microplastics through routine oral hygiene products.
Contributions of Fourier transform infrared spectroscopy in microplastic pollution research: A review
This review covers advances in Fourier transform infrared (FTIR) spectroscopy techniques — including chemical imaging — for identifying polymer types in microplastic samples and tracing their fate in different environmental matrices.
An investigation on the prevalence of microplastic in commercial and open pan salts obtained from Cox's Bazar and Maheshkhali region of Bay of Bengal (Bangladesh)
Researchers found microplastics in all commercial and open pan salt samples from the Cox's Bazar and Maheshkhali regions of Bangladesh, identifying polyethylene, PET, and other polymers through FTIR and Raman spectroscopy analysis.