leea guineensis . don叶片微形态和植物化学状态

O. L. Awotedu, Paul Oluwatimilehin Ogunbamowo
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引用次数: 1

摘要

据了解,几内亚利亚叶子含有一些活性化合物,证明其作为药用植物的用途。建立豚草叶片的综合生药学谱有助于其质量的标准化和鉴别。采用标准方法对鲜叶和粉叶进行了宏观形态学、微观形态学(定性和定量)、化学显微镜和植物化学特征的评价。结果表明,从宏观上看,叶片形态简单、对生、完整,边缘呈圆柱形起伏,质地坚硬光滑。节间短,节间节(结节)处有粉红色斑点。它有一个简单的树干,没有刺,表面有颗粒状断裂。年轻时呈淡绿色,成熟时呈深绿色。显微镜下,气孔在背面全萎,在正面无气孔。表皮细胞不规则,呈矩形,表皮背斜壁直,背面和正面表皮呈微波状。毛状体不存在于两侧表皮,而结晶存在于背面表皮。结果表明,叶片背面的气孔指数为18.87%,叶片背面和正面的平均细胞长度分别为43.46和43.89,宽度分别为30.50和31.61。背面气孔数为20个。化学显微特征包括淀粉、碳酸钙晶体,不含木质素、脂肪和粘液,而植物化学筛选显示存在生物碱、皂苷、黄酮类、单宁、酚类和蒽醌。药用植物叶面微形态学的发现对正确鉴别、规范和鉴别药用植物具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
FOLIAR MICRO-MORPHOLOGY AND PHYTOCHEMICAL STATUS OF LEEA GUINEENSIS G. DON LEAVES
Leea guineensis G. Don leaves are known to contain some active compounds that certify its usage as a medicinal plant. The establishment of a comprehensive pharmacognostic profile of L. guineensis leaves will help in the standardization of quality and proper identification. Evaluation of the fresh and powdered leaves was carried out using standard methods to determine the macro-morphological, micro-morphological (both the qualitative and quantitative), chemo-microscopic and phytochemical profiles. The result obtained shows that macroscopically, the leaf was simple, opposite and entire in shape, having a cylindrical and undulating edge with a hard and smooth texture. The internodes are short with a spot of pink colour at the interval nodes (nodules). It has a simple trunk without thorns with a granular fracture surface. The colour is pale green when young and deep green at maturity. Microscopically, the stomata were paracytic on the abaxial and absent on the adaxial. The epidermal cells are irregular and rectangular, the epidermis possesses straight anticlinal walls and is slightly undulating both on the abaxial and adaxial epidermis. Trichomes are not present on both epidermises, while crystals are present on the abaxial epidermis. The stomata index (18.87%) was calculated for abaxial, the mean cell length (43.46 and 43.89) and width (30.50 and 31.61) was comparably similar for both abaxial and adaxial epidermis respectively. The number of stomata detected on the abaxial was 20. Chemo-microscopic characters present include Starch, Calcium carbonate crystals while lignin, fat, and mucilage were absent while phytochemical screening revealed that alkaloid, saponin, flavonoids, tannin, phenolics and anthraquinone were present. The foliar micro-morphological findings are of great importance in the proper and correct identification, standardization, and authentication of medicinal plants.
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