Rai Summi, Kafle Ananda, Devkota Hari Prasad, Bhattarai Ajaya
Water Resource Research and Development Centre, Ministry of Energy, Water Resources and Irrigation, Lalitpur, Nepal.
Department of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University, Biratnagar, Nepal.
Heliyon. 2023 Apr 28;9(5):e15807. doi: 10.1016/j.heliyon.2023.e15807. eCollection 2023 May.
In this study, saponins extracted from leaves and stem bark of L. were investigated for surface-active properties. Conductivity and surface tension measurements revealed the micellar character of saponin, with the average CMC, determined to be 0.50 g/L and 0.75 g/L for leaf and stem bark saponin, respectively. Stem bark saponin reduced the surface tension of water to a greater extent ( 37.65 mN/m) compared to leaf saponin ( 49.27 mN/m) indicating its efficient surface activity and potential detergency. pH measurement confirmed the weakly acidic nature of saponin with a pH value lying slightly below the range suitable for hair and skin. Stem bark saponin showed better cleaning ability, foaming ability and foam stability than leaf saponin, due to a sufficient reduction in the surface tension of water. The results obtained suggest that the saponin extracted from both the leaves and stem bark of can be used as environmentally friendly alternatives to synthetic surfactants.
在本研究中，对从L.的叶子和茎皮中提取的皂苷的表面活性性质进行了研究。电导率和表面张力测量揭示了皂苷的胶束特性，叶皂苷和茎皮皂苷的平均临界胶束浓度（CMC）分别测定为0.50 g/L和0.75 g/L。与叶皂苷（49.27 mN/m）相比，茎皮皂苷能更大程度地降低水的表面张力（37.65 mN/m），表明其具有高效的表面活性和潜在的去污能力。pH测量证实了皂苷呈弱酸性，其pH值略低于适合头发和皮肤的范围。由于水的表面张力有足够的降低，茎皮皂苷比叶皂苷表现出更好的清洁能力、发泡能力和泡沫稳定性。所得结果表明，从叶子和茎皮中提取的皂苷可作为合成表面活性剂的环保替代品。
