Chen Fen, Cheng Aokai, Xiang Jianping, Wang Xianju, Guan Litao, Lin Xiuyi, Tu Dengyun
Key Laboratory of Advanced Materials for Facility Agriculture, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
Hongwei Wooden Products (Renhua) Company Limited, Shaoguan 512000, China.
ACS Omega. 2025 Feb 14;10(7):7362-7370. doi: 10.1021/acsomega.4c11224. eCollection 2025 Feb 25.
To develop an effective and eco-friendly method for extracting bamboo sap can effectively improve the utilization of bamboo resources and promote the sustainable development of the bamboo industry. In this work, fresh bamboo strips were directly placed into a hot press for hot pressing (HP), yielding both pure bamboo sap and flattened, dense bamboo strips. The physicochemical properties of bamboo sap and bamboo strips were systematically investigated. The results indicated that the HP method offers significant advantages in terms of the bamboo sap extraction efficiency and the mechanical properties of bamboo. The bamboo sap extracted through HP exhibited a guaiacol concentration comparable to that obtained via the traditional baking method, while the levels of total flavonoids, amino acids, and total phenols were notably higher. The density distribution of the hot-pressed bamboo strips was uniform with a bending strength of 263 MPa and a modulus of elasticity of 14.04 GPa, reflecting enhancements of 45.30% and 65.17%, respectively. Furthermore, the hot-pressed bamboo demonstrates excellent dimensional stability, thereby expanding its potential applications in construction and furniture. The HP method achieves the simultaneous extraction of bamboo sap and the physical modification of bamboo strips, significantly improving resource utilization efficiency, minimizing waste, and simplifying the steps involved in traditional methods, ultimately showcasing considerable environmental benefits.
开发一种有效且环保的竹汁提取方法，能够有效提高竹资源的利用率，促进竹产业的可持续发展。在这项工作中，将新鲜竹条直接放入热压机中进行热压（HP），得到了纯净的竹汁和平整、致密的竹条。系统研究了竹汁和竹条的理化性质。结果表明，热压法在竹汁提取效率和竹子力学性能方面具有显著优势。通过热压提取的竹汁中愈创木酚浓度与传统烘焙法相当，而总黄酮、氨基酸和总酚的含量则明显更高。热压竹条的密度分布均匀，弯曲强度为263MPa，弹性模量为14.04GPa，分别提高了45.30%和65.17%。此外，热压竹具有优异的尺寸稳定性，从而扩大了其在建筑和家具领域的潜在应用。热压法实现了竹汁的同步提取和竹条的物理改性，显著提高了资源利用效率，减少了浪费，简化了传统方法中的步骤，最终展现出可观的环境效益。
