Evaluation of guso seaweeds as potential material for the development of edible drinking straw
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Abstract
Single-used plastics such as drinking straws are marked as a major source of total plastic waste around the world. Due to their tiny size and lack of recycling potential, plastic straw trash is often overlooked in comparison to other plastic garbage resulting in a tremendous environmental burden such as plastic pollution. For these reasons, the need for edible and biodegradable drinking straws derived from renewable sources such as guso seaweed is of high significance. Therefore, the main objective of this study was to develop a drinking straw made from guso seaweeds using different plasticizer concentrations such as 25% glycerol (T1), 30% glycerol (T2), 25% sorbitol (T3), and 30% sorbitol (T4) (w/w basis). The developed drinking straw was then characterized in terms of biodegradability, water absorption, tensile strength (TS), and elongation at break (EAB). The results showed that the type and concentration of plasticizers have no significant effects (p>0.05) on the TS and EAB of the samples. Glycerol plasticized drinking straws also showed quick degradation compared to sorbitol plasticized samples. In terms of water absorption, significant changes (p≤0.05) were found where T1 obtained a value ranging from 44.63-50.42%. This demonstrated a promising result as it absorbs a lesser amount of water in comparison to T3 (57.65-70.44%). The study concluded that the incorporation of plasticizers can enhance the properties of drinking straws made from carrageenan of guso seaweeds and is potential to produce edible drinking straws out from guso seaweeds.
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