Awal Md Shihabul, Benjakul Soottawat, Prodpran Thummanoon, Nilsuwan Krisana
International Center of Excellence in Seafood Science and Innovation (ICE-SSI), Faculty of Agro-Industry, Prince of Songkla University, Hat Yai 90110, Songkhla, Thailand.
Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea.
Polymers (Basel). 2025 Apr 22;17(9):1139. doi: 10.3390/polym17091139.
Protein-based films have gained attention due to their potential as biodegradable packaging. This study investigated the properties and characteristics of film-forming emulsions (FFEs) and their films based on co-precipitated protein (CPP) from Bambara groundnut protein isolate (BGPI) and acid-soluble collagen (ASC) emulsified with different levels of basil essential oil (BE) (50%, 75% and 100%) and soy lecithin (SL) (25% and 50%). The oil droplet size, stability, and distribution of FFEs were characterized. Larger oil droplet sizes, a higher flocculation factor, and a higher coalescence index were observed for FFEs emulsified with higher levels of BE and SL. All FFEs had uniform oil distribution. Films from different FFEs were formed and analyzed. Films containing BE and SL had higher thickness, elongation at break, *-value, water vapor and UV-light barrier properties, but a lower tensile strength than the control film. Emulsion films exhibited smooth surface and rough cross-section and were heat-sealable. FTIR spectra indicated lower protein interactions in the emulsion film containing higher levels of BE and SL. The film containing 100% BE had the highest antioxidant activities, regardless of the SL level used. The emulsification of BE and SL at various levels thus influenced the properties and characteristics of the FFE and emulsion film.
基于蛋白质的薄膜因其作为可生物降解包装材料的潜力而受到关注。本研究调查了成膜乳液（FFEs）及其基于 Bambara 花生分离蛋白（BGPI）和酸溶性胶原蛋白（ASC）的共沉淀蛋白（CPP）制成的薄膜的性能和特性，这些薄膜用不同含量的罗勒精油（BE）（50%、75%和 100%）和大豆卵磷脂（SL）（25%和 50%）进行乳化。对 FFEs 的油滴大小、稳定性和分布进行了表征。观察到用较高含量的 BE 和 SL 乳化的 FFEs 具有更大的油滴尺寸、更高的絮凝因子和更高的聚并指数。所有 FFEs 的油分布均一。制备并分析了来自不同 FFEs 的薄膜。含有 BE 和 SL 的薄膜具有更高的厚度、断裂伸长率、*值、水蒸气和紫外线阻隔性能，但拉伸强度低于对照薄膜。乳液薄膜表面光滑、横截面粗糙且可热封。傅里叶变换红外光谱表明，含有较高含量 BE 和 SL 的乳液薄膜中蛋白质相互作用较低。无论使用何种 SL 含量，含有 100%BE 的薄膜具有最高的抗氧化活性。因此，不同含量的 BE 和 SL 的乳化作用影响了 FFE 和乳液薄膜的性能和特性。
