Kowalonek Jolanta, Stachowiak Natalia, Bolczak Kinga, Richert Agnieszka
Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina St. 7, 87-100 Torun, Poland.
Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Lwowska St. 1, 87-100 Torun, Poland.
Polymers (Basel). 2023 Jan 4;15(2):260. doi: 10.3390/polym15020260.
Tansy () is a common plant used in folk medicine for digestive problems, fevers, and migraines; against parasites; and as an insect repellent. The active substances in essential oil are responsible for its antimicrobial and antioxidant activity. Thus, tansy essential oil (TO) was added to alginate films to fabricate materials with antioxidant and antibacterial properties for food packaging. Sodium alginate films with glycerol and TO were tested in terms of structure, mechanical, thermal, antioxidant, and antibacterial properties. The structure of the films was examined using SEM and an ATR-FTIR spectrophotometer. The addition of TO to the alginate film significantly changed the films' microstructure, making them rougher and porous. A low-intensity band at 1739 cm, indicative of the presence of TO, appeared in all spectra of alginate films with TO. Moreover, the studies revealed that essential oil acted as a plasticizer, slightly reducing tensile strength from about 7 MPa to 5 MPa and increasing elongation at break from 52% to 56% for the sample with 2% TO. The alginate films enriched in TO exhibited antioxidant properties (280 μmol Trolox/100 g of the sample with 2% TO) and antibacterial activity against , , and .
艾菊（）是一种常见植物，在民间医学中用于治疗消化问题、发烧和偏头痛；对抗寄生虫；以及作为驱虫剂。精油中的活性物质赋予了其抗菌和抗氧化活性。因此，将艾菊精油（TO）添加到海藻酸盐薄膜中，以制造具有抗氧化和抗菌特性的食品包装材料。对含有甘油和TO的海藻酸钠薄膜进行了结构、机械、热学、抗氧化和抗菌性能测试。使用扫描电子显微镜（SEM）和衰减全反射傅里叶变换红外光谱仪（ATR-FTIR）对薄膜的结构进行了检测。向海藻酸盐薄膜中添加TO显著改变了薄膜的微观结构，使其更粗糙且具有多孔性。在所有含有TO的海藻酸盐薄膜光谱中，均出现了一个位于1739 cm处的低强度谱带，表明存在TO。此外，研究表明精油起到了增塑剂的作用，对于含有2% TO的样品，其拉伸强度从约7 MPa略微降低至5 MPa，断裂伸长率从52%增加至56%。富含TO的海藻酸盐薄膜表现出抗氧化性能（含有2% TO的样品为280 μmol Trolox/100 g）以及对、和的抗菌活性。
