Thin Layer Drying Characteristics of Sweet Potato Starch Based Films and Mathematical Modelling

Saini, Charanjiv Singh; Singh, Sukhcharn; Saxena, D.C.

doi:10.4172/2157-7110.1000168

Cited by 1 publication

(1 citation statement)

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“…Amylose content is greater in legume starches (30-35% wt) [33], followed by maize and potato starches (22-29 and 21-26% wt, respectively) [18]. Post casting, the choice of film drying temperature, air humidity and drying time also play an important role in the physicochemical state of the amylose matrix, influencing its degree of crystallinity [34].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Functional Properties of Starch-Based Biodegradable Films

Frangopoulos,

Marinopoulou,

Goulas

et al. 2023

Foods

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A definitive screening design was used in order to evaluate the effects of starch, glycerol and montmorillonite (MMT) concentrations, as well as the drying temperature, drying tray type and starch species, on packaging film’s functional properties. Optimization showed that in order to obtain films with the minimum possible thickness, the maximum elongation at break, the maximum tensile strength, as well as reduced water vapor permeability and low opacity, a combination of factors should be used as follows: 5.5% wt starch concentration, 30% wt glycerol concentration on a dry starch basis, 10.5% wt MMT concentration on a dry starch basis, 45 °C drying temperature, chickpea as the starch species and plexiglass as the drying tray type. Based on these results, starch films were prepared, and fresh minced meat was stored in them for 3 days. It was shown that the incorporation of MMT at 10.5% wt on a dry starch basis in the packaging films led to a decreased mesophilic and psychrotrophic bacteria growth factor compared to commercial packaging. When assessed for their biodegradability, the starch films disintegrated after 10 days of thermophilic incubation under simulated composting conditions. Finally, to prove their handling capability during industrial production, the starch films were rewound in a paper cylinder using an industrial-scale rewinding machine.

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Section: Introductionmentioning

confidence: 99%