Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing 100083, China.
Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing 100083, China.
Carbohydr Polym. 2024 Dec 15;346:122663. doi: 10.1016/j.carbpol.2024.122663. Epub 2024 Aug 27.
Concerns about food safety and environmental impact from chemical surfactants have prompted interest in natural lignocellulosic materials as alternatives. In this study, we combined hydrated deep eutectic solvent (DES) pretreatment with ultrasound treatment to prepare lignocellulosic nanofibrils (LCNF) from bamboo shoot shells with appropriate surface properties for stabilizing Pickering emulsions. The pretreatment intensity effectively modulated the surface characteristics of LCNF, achieving desirable wettability through lignin retention and in-situ esterification. The resulting LCNF/curcumin Pickering emulsion (CPE) demonstrated curcumin protection and pH-responsive color changes, while the ensuing CPE/PVA composite film exhibited ultraviolet shielding, mechanical strength, oxygen barrier, and antioxidant properties. Furthermore, the CPE/PVA film showed promise as a real-time indicator for monitoring shrimp freshness, maintaining sensitivity to spoilage even after six months of storage. These findings advance the advancement of green LCNF technologies, providing eco-friendly solutions for valorizing bamboo shoot shells and enhancing the application of LCNF in Pickering emulsions.
人们对化学表面活性剂的食品安全和环境影响感到担忧，这促使人们对天然木质纤维素材料产生了兴趣，希望将其作为替代品。在这项研究中，我们将水合深共晶溶剂（DES）预处理与超声处理相结合，从竹笋壳中制备具有适当表面性能的木质纤维素纳米纤维（LCNF），以稳定 Pickering 乳液。预处理强度可有效调节 LCNF 的表面特性，通过保留木质素和原位酯化实现理想的润湿性。所得的姜黄素/LCNF Pickering 乳液（CPE）显示出对姜黄素的保护和 pH 响应的颜色变化，而随后的 CPE/PVA 复合膜则表现出紫外线屏蔽、机械强度、氧气阻隔和抗氧化性能。此外，CPE/PVA 薄膜有望成为实时监测虾类新鲜度的指示剂，即使在储存六个月后，其对变质仍保持敏感性。这些发现推动了绿色 LCNF 技术的发展，为竹笋壳的增值利用提供了环保解决方案，并增强了 LCNF 在 Pickering 乳液中的应用。
