Janik Weronika, Nowotarski Michał, Shyntum Divine Yutefar, Banaś Angelika, Krukiewicz Katarzyna, Kudła Stanisław, Dudek Gabriela
Łukasiewicz Research Network-The Institute of Heavy Organic Synthesis "Blachownia", Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland.
Department of Physical Chemistry and Technology of Polymers, PhD School, Silesian University of Technology, 2a Akademicka Str., 44-100 Gliwice, Poland.
Materials (Basel). 2022 Apr 29;15(9):3236. doi: 10.3390/ma15093236.
One of the major objectives of food industry is to develop low-cost biodegradable food packaging films with optimal physicochemical properties, allowing for their large-scale production and providing a variety of applications. To meet the expectations of food industry, we have fabricated a series of solution-cast films based on common biodegradable polysaccharides (starch, chitosan and alginate) to be used in food packaging applications. Selected biopolymers were modified by the addition of glycerol and oxidized sucrose (starch), glycerol (chitosan), and glycerol and calcium chloride (alginate), as well as being used to form blends (starch/chitosan and starch/alginate, respectively). A chestnut extract was used to provide antibacterial properties to the preformed materials. The results of our studies showed that each modification reduced the hydrophilic nature of the polymers, making them more suitable for food packaging applications. In addition, all films exhibited much higher barrier properties to oxygen and carbon dioxide than commercially available films, such as polylactic acid, as well as exhibiting antimicrobial properties against model Gram-negative and Gram-positive bacteria ( and respectively) as well as yeast ().
食品工业的主要目标之一是开发具有最佳物理化学性质的低成本可生物降解食品包装薄膜,以实现其大规模生产并提供多种应用。为了满足食品工业的期望,我们制备了一系列基于常见可生物降解多糖(淀粉、壳聚糖和海藻酸盐)的溶液浇铸薄膜,用于食品包装应用。通过添加甘油和氧化蔗糖(淀粉)、甘油(壳聚糖)、甘油和氯化钙(海藻酸盐)对选定的生物聚合物进行改性,并分别用于形成共混物(淀粉/壳聚糖和淀粉/海藻酸盐)。使用栗子提取物为预制材料提供抗菌性能。我们的研究结果表明,每种改性都降低了聚合物的亲水性,使其更适合食品包装应用。此外,所有薄膜对氧气和二氧化碳的阻隔性能都比市售薄膜(如聚乳酸)高得多,并且对革兰氏阴性菌和革兰氏阳性菌(分别为 和 )以及酵母菌( )都具有抗菌性能。
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