The need for compatible materials for the preservation of cultural heritage has resulted in the revival of lime-based mortar technology and other applications. This work investigates the cohesion and integrity of lime mortars added with fresh mucilage extracted from five plants and evaluates their bioreceptivity for long-term durability. Specimens of lime mortars added with 2.5% of fresh mucilage extracted from Aloe vera, Cylindropuntia californica, Opuntia engelmannii, Opuntia ficus-indica and Salvia hispanica mucilages were analyzed for color change (colorimetry), cohesion (ultrasound measurements), integrity (X-rays) and bioreceptivity (microbiological tests).The internal structure of the specimens added with Cacti mucilages shows better compactness, and no color change was noticed in the bio-mortars also after aging. The bioreceptivity response of mortars inoculated with bacteria, fungi and a photosynthetic biofilm was quite different. Specimens added with Aloe and Cylindropuntia mucilages showed a higher extent of bioreceptivity than the control; the specimens of bio-mortars added with Opuntia engelmannii, Opuntia ficus-indica and Salvia hispanica mucilages did not appear, up to threemonths after the contamination, any microbial growth. These results indicate that the addition of mucilage improves the mortar qualities, but the choice of the plant mucilage must be carefully evaluated since it can be responsible for changes in the bioreceptivity of the mortar.

中文翻译：

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不同植物种类的黏液影响生物砂浆的恢复特性

对用于保存文化遗产的兼容材料的需求导致了石灰基砂浆技术和其他应用的复兴。这项工作研究了石灰砂浆的粘合性和完整性，石灰砂浆与从五种植物中提取的新鲜粘液一起添加，并评估了其对长期耐久性的生物接受性。加入从提取新鲜粘液的2.5％石灰砂浆试样芦荟，Cylindropuntia夜蛾，仙人掌engelmannii，梨果仙人掌和西班牙鼠尾草分析了黏液的颜色变化（比色法），内聚力（超声波测量），完整性（X射线）和生物接受度（微生物学测试）。添加了仙人掌黏液的标本的内部结构显示出更好的致密性，并且没有观察到颜色变化老化后的生物砂浆也是如此。接种有细菌，真菌和光合生物膜的灰浆的生物感受性响应有很大不同。与芦荟和Cylindropuntia粘液一起添加的标本显示出比对照更高的生物接受度。加入了仙人掌，印度仙人掌和西班牙丹参的生物砂浆标本污染后最多三个月未出现任何微生物生长。这些结果表明，添加粘胶剂可以改善砂浆的品质，但是必须仔细评估植物粘胶剂的选择，因为它可能导致砂浆的生物接受度发生变化。