Abstract
Pilot study of the influence of thermoplastic starch based polymer packaging material on the growth of diatom population in sea water environment Novel polymeric packaging materials susceptible to environmentally friendly decomposition appeared on the global market. The paper is devoted to an investigation of the impact of degradable polymer packaging on marine life. The chosen polymer was a commercial packaging based on thermoplastic starch (TPS over 85%). The microorganism chosen was Phaeodactylum tricornutum diatom (identified in many aquatic reservoirs, with a tendency to flow with seawater plankton in places of great saline oscillation). The packaging material was incubated both in natural seawater and in the presence of diatom population. The chlorophyll a content was determined as the criterion of diatom growth in the presence of tested polymers. The polymer surface and the colour changes in the diatom culture were recorded photographically. The presence of polymeric samples significantly changed the kinetic of diatom growth in seawater during incubation affecting its biological balance. During the experiment in seawater, diatom adhered to polymer surfaces and the polymer stimulated their growth.
Highlights
Nowadays, many food products and everyday use commodity are packed into laminated polymers, the so-called packaging foils
The aim of this paper was to investigate the influence of commercial packaging polymeric material based on thermoplastic starch (TPS) on the seawater environment
Macroscopic observations proved the influence of the TPS polymer on P. tricornutum marine diatom growth
Summary
Many food products and everyday use commodity are packed into laminated polymers, the so-called packaging foils. With technical improvement in packaging field, its advanced technology and economic development, the quantity of waste being generated and stored by society is rising, causing an enormous demand for its proper disposal. Global packaging market is currently evolving, introducing the 2nd-generation polymer-packaging materials. Those new materials are able to compost/biodegrade in a biological degradation process being an environmentally friendly way of waste decomposition. Are new polymers said to minimize the difficulty of traditional polymer waste storage but they decrease undergoing decomposition into simple, nontoxic compounds introduced into native environment
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