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Title: | Solubility of edible films from amaranth flour enzymatic hydrolysate modified with dialdehyde starch | ||||||||||
Author: | Mokrejš, Pavel; Hrnčiřík, Josef; Janáčová, Dagmar; Vašek, Vladimír; Čermák, Roman | ||||||||||
Document type: | Peer-reviewed article (English) | ||||||||||
Source document: | Asian Journal of Chemistry. 2010, vol. 22, issue 3, p. 1982-1992 | ||||||||||
ISSN: | 0970-7077 (Sherpa/RoMEO, JCR) | ||||||||||
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Abstract: | The objective of the work was to prepare biodegradable and edible films based on amaranth flour starch-protein hydrolysate and evaluate the effect of chemical and physical modifications on solubility properties of films. Films were prepared by casting a 14 % (w/w) water solution of hydrolysate containing 20 % (per hydrolysate dry matter) glycerol and 0, 1 or 5 % (per hydrolysate dry matter) additions of dialdehyde starch. After thermal exposure of films at 65 or 95 oC (for 6 or 48 hours) film solubility tests were performed in water at 6 or 37 oC. It was found that chemical modification (added dialdehyde starch) and physical modification (thermal exposure) of films allows to markedly altering their water solubility. Results of water solubility tests can serve to practically utilising starch-protein hydrolysate of amaranth flour for producing biodegradable packaging materials (foils, coatings) to be employed in the food industry, cosmetics or agriculture. | ||||||||||
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