Physicochemical properties of biodegradable films of spine yam (Dioscorea rotundata), hydroxypropylmethylcellulose and clove oil (Syzygium aromaticum)

Abstract

Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Effect of Different Essential Oils on the Properties of Edible Coatings Based on Yam (Dioscorea rotundata L.) Starch and Its Application in Strawberry (Fragaria vesca L.) Preservation

“…Other authors suggest that the decrease in tensile strength can be attributed to the change in polymer-polymer interactions in polymer-oil interactions caused by the addition of essential oils and the mixture of both polymers. These less rigid and more deformable materials can be applied to manufacturing food packaging materials [26]. In general, similar studies highlight that the tensile strength of yam starch films is better than wheat and corn starch films, which produce weak strength [27].…”

Improvement of the physicochemical properties of composite materials based on cassava starch and polycaprolactone reinforced with sodium montmorillonite

“…These plasticizers are generally used in a liquid state and with a higher viscosity than water, which gives the blend improvements in terms of the material's flexibility by reducing the intermolecular force (Medrano de Jara, et al, 2019). The blend with other biopolymers such as hydroxypropyl methylcellulose or essential oils has also been shown to change the physicochemical properties of starch-based films and improve the films' flexibility (Villabona-Ortiz, et al, 2020). The presence of plasticizers in the matrix generates plasticizerplasticizer and plasticizer-polymer interactions, which increases the intermolecular space and generates continuity in the matrix; these are necessary to maintain the film's integrity, avoiding the formation of pores that lead to the brittleness of the material (Thakur et al, 2019).…”

Application of modified vegetable oil for improvement of biodegradable materials based on thermoplastic starch and polylactic acid

“…This biopolymer can be obtained from different sources such as corn (Zea mays), potato (Solanum tuberosum), rice (Oryza sativa), yam (Dioscorea rotundata), among others. In the development of this work, yam was used, which in Colombia is grown around 500 thousand tons per year, with a yield of 13.8 tons per planted hectare, being a crop of small and medium farmers that constitutes in many regions of the country, the primary source of rural employment and food supply to its inhabitants (Villabona-Ortiz, Tejada-Tovar, & Ortega-Toro, 2020). Yam starch has a high amylose content compared to cassava starch, being less susceptible to enzymatic degradation.…”

“…Yam starch has a high amylose content compared to cassava starch, being less susceptible to enzymatic degradation. Besides, they have a higher gelatinization temperature requiring more energy for processing, but they are also less susceptible to thermal degradation (Villabona-Ortíz et al, 2020;Rodriguez-Lora et al, 2020). Starchbased materials have significant advantages such as biodegradability, compostability (Martins da Costa et al, 2020), high oxygen barrier.…”