How Does NanoNanoplastics Build-Up Affect Crop Grains? AdvSciNews crops agriculture nanoparticles nanoparticle nanotoxicology nanoplastics
By Hussain AhmedOct 19 2022Reviewed by Megan Craig, M.Sc. Nanoplastics derived from plastic waste are increasingly accumulating in agricultural farmlands. The absorption and deposition of plastic particles by crops pollute the food supply and pose unanticipated health concerns to human beings. However, the effects of nanoplastics on crop grains cultivated in polluted soil remain relatively unknown.
Polystyrene Nanoplastics: Overview and Environmental Concerns Plastic manufacturing has steadily expanded over the previous 30 years, with annual output exceeding 360 million tons in 2018. Polystyrene , which has a high volatile constituent ratio, has emerged as a prominent and toxic plastic substance.
Related StoriesAdditionally, nanoplastics can form homo- and hetero-aggregates due to the diversity of inorganic plastic particles. These nanoplastic aggregates enter the cells of marine and terrestrial organisms and induce cytotoxicity, oxidative stress, irritation, and neoplasia disturbances in metabolism and energy balance.
Consuming nanoplastic-contaminated crop grains can also endanger human health. Although recent studies have assessed the entry, dispersion, and cytotoxicity of nanoplastics in crops, little is understood about nanoplastic deposition and activities inside seeds, which are the fundamental living constituent of the biosphere at the lowest nutritional stage of the food chain.
The treatment of these crops with polystyrene nanoplastics raised the empty-shell numbers of rice grain by 35.45%, resulting in a 3.02% decrease in the seed-setting rate of rice and a 3.45% decrease in the average seed weight of peanuts. Moreover, PS-NPs harmed the nutritional quality of rice and peanut crops by lowering the number of essential minerals, amino acids, and unsaturated fatty acids.
Relevant studies have revealed that PS-NPs have a high surface-to-volume and hydrophilic nature and might act as transporters for various environmental pollutants such as insecticides, herbicides, and toxic substances, allowing pollutants to accumulate in crop grains.
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