Salem Mohamed Z M, Abo Elgat Wael A A, Taha Ayman S, Fares Yahia G D, Ali Hayssam M
Forestry and Wood Technology Department, Faculty of Agriculture (EL-Shatby), Alexandria University, Alexandria 21545, Egypt.
Restoration Department, High Institute of Tourism, Hotel Management and Restoration, Abukir, Alexandria 21526, Egypt.
Materials (Basel). 2020 Mar 12;13(6):1292. doi: 10.3390/ma13061292.
In the pulp and paper industry, several studies have been done to improve and enhance the properties of the mechanical, optical, and antimicrobial activities of pulp produced with different additives. In the present study, pulp of wood branches (WBs) from Dehnh. and (Hook.f.) Seem. was treated with -hexane oily extracts (HeOE) from L. fruits, L. leaves, and L. seeds as additives at concentrations of 1%, 3%, and 5% based on oven-dry pulp weight. Measured mechanical properties were higher in paper sheets made from than WB pulp. The highest tensile index values were observed with WB pulp treated with 5% HeOEs of (33.90 N·m/g) and (33.76 N·m/g) compared to control (32.10 N·m/g); the highest tear index with 5% HeOE of (4.11 mN·m/g) compared to control (3.32 mN·m/g); and the highest burst index with 5% HeOE of (4.11 kPa·m/g) compared to control (3.08 kPa·m/g). The highest double-fold number value (9) was observed with WB pulp treated with 5% HeOEs of , , and but with no significant difference compared to control treatment (8.33) or other HeOE treatments with WB pulp. Scanning electron microscope (SEM) examination showed clear inhibition of the growth of with WB pulp paper discs of and treated with HeOEs of , , and at 3% and 5% compared to control treatment, while HeOEs at 5% concentration showed no growth of and . The present findings establish that the HeOEs from , , and at 3% and 5% are novel natural products that can be used as alternatives to improve the properties and antifungal activity of WB pulp produced from and .
在制浆造纸工业中，已经开展了多项研究来改善和提高使用不同添加剂生产的纸浆的机械性能、光学性能和抗菌活性。在本研究中，来自德恩（Dehnh.）和（胡克.f.）西姆（(Hook.f.) Seem.）的树枝（WB）纸浆，用来自L.果实、L.叶子和L.种子的己烷油提取物（HeOE）作为添加剂进行处理，添加浓度基于绝干纸浆重量分别为1%、3%和5%。测得的由（此处原文缺失相关信息）制成的纸张的机械性能高于WB纸浆。与对照（32.10 N·m/g）相比，用5%来自（此处原文缺失相关信息）的HeOE处理的WB纸浆观察到最高的抗张指数值（33.90 N·m/g）和（此处原文缺失相关信息）（33.76 N·m/g）；与对照（3.32 mN·m/g）相比，用5%来自（此处原文缺失相关信息）的HeOE处理时撕裂指数最高（4.11 mN·m/g）；与对照（3.08 kPa·m/g）相比，用5%来自（此处原文缺失相关信息）的HeOE处理时耐破指数最高（4.11 kPa·m/g）。用5%来自（此处原文缺失相关信息）、（此处原文缺失相关信息）和（此处原文缺失相关信息）的HeOE处理的WB纸浆观察到最高的双折次数值（9），但与对照处理（8.33）或用HeOE处理的其他WB纸浆相比无显著差异。扫描电子显微镜（SEM）检查表明，与对照处理相比，用3%和5%来自（此处原文缺失相关信息）、（此处原文缺失相关信息）和（此处原文缺失相关信息）的HeOE处理的和（此处原文缺失相关信息）的WB纸浆纸盘对（此处原文缺失相关信息）的生长有明显抑制作用，而5%浓度的HeOE对（此处原文缺失相关信息）和（此处原文缺失相关信息）无生长现象。目前的研究结果表明，3%和5%浓度的来自（此处原文缺失相关信息）、（此处原文缺失相关信息）和（此处原文缺失相关信息）的HeOE是新型天然产物，可作为改善由（此处原文缺失相关信息）和（此处原文缺失相关信息）生产的WB纸浆性能和抗真菌活性的替代品。
