期刊
FOOD CHEMISTRY
卷 438, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2023.138011
关键词
Biocomposite film; Talipot starch; Plant mucilage; Crosslinking; Tensile strength; Biodegradation
Talipot starch-based biocomposite films were prepared by incorporating plant mucilage derived from various sources. The addition of plant mucilage enhanced the crosslinking and relative crystallinity of the films. The biocomposite films exhibited similar structures to native starch films with finer corrugations. The moisture content decreased while thickness and opacity increased with the addition of plant mucilage. BSM-TSF showed the highest tensile strength among all biocomposite films and demonstrated improved thermal and biodegradation stability.
Biocomposite films were prepared by formulating talipot starch with plant mucilage derived from shoeblack leaves, okra, and seeds of basil, fenugreek, and flax, which were identified as SBM-TSF, OKM-TSF, BSM-TSF, FGM-TSF, and FXM-TSF, respectively. The plant mucilages enhanced the crosslinking of the filmogenic solutions, which increased the film's relative crystallinity. Upon topographical investigation, the biocomposite films exhibited the same compact and homogeneous structures as the native talipot starch film (NTSF), but with finer corrugations. When compared to NTSF, the addition of plant mucilage decreased the moisture content while increasing the thickness and opacity. SBM-TSF showed significantly reduced (p <= 0.05) solubility and water vapor permeability, indicating that increased crosslink formation in the film obstructed the water vapor passage. Among all the biocomposite films, the BSM-TSF had the greatest tensile strength, making it more resistant to stretching. Among the studied biocomposite films, SBM-TSF and BSM-TSF demonstrated improved thermal and biodegradation stability.
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