Реферат
Manilkara zapota (Sapotaceae), commonly known as Sapodilla, is widely known for its delicious fruit. Various parts of this plant are also used in folk medicine to treat a number of conditions including fever, pain, diarrhoea, dysentery, haemorrhage and ulcers. Scientific studies have demonstrated analgesic, anti-inflammatory, antioxidant, cytotoxic, antimicrobial, antidiarrheal, anti-hypercholesteremic, antihyperglycemic and hepatoprotective activities in several parts of the plant. Phytochemical studies have revealed the presence of phenolic compounds including protocatechuic acid quercitrin, myricitrin, catechin, gallic acid, vanillic acid, caffeic acid, syringic acid, coumaric acid, ferulic acid, etc. as main constituents of the plant. Several fatty acids, carotenoids, triterpenes, sterols, hydrocarbons and phenylethanoid compounds have also been isolated from M. zapota. The present review is a comprehensive description focused on pharmacological activities and phytochemical constituents of M. zapota.
Manilkara zapota (Sapotaceae), comuÌnmente conocida como Sapodilla, es ampliamente conocida por su delicioso fruto. Variadas partes de esta planta se usan en medicina popular para tratar una serie de afecciones, como fiebre, dolor, diarrea, disenteriÌa, hemorragia y uÌlceras. Estudios cientiÌficos han demostrado actividad analgeÌsica, antiinflamatoria, antioxidante, citotoÌxica, antimicrobiana, antidiarreica, antihipercolesteroleÌmica, antihipergluceÌmica y hepatoprotectora en diferentes partes de la planta. Los estudios fitoquiÌmicos han revelado la presencia de compuestos fenoÌlicos que incluyen aÌcido protocatechuÌico, quercitrina, miricitrina, catequina, aÌcido galico, aÌcido vaniÌlico, aÌcido cafeico, aÌcido siriÌnico, aÌcido cumaÌrico, aÌcido fuÌnico y aÌcido feruÌlico como componentes principales de la planta. Varios aÌcidos grasos, carotenoides, triterpenos, esteroles, hidrocarburos y compuestos feniletanoides tambieÌn han sido aislados de M. zapota. La presente revisioÌn es una descripcioÌn exhaustiva centrada en las actividades farmacoloÌgicas y los constituyentes fitoquiÌmicos de M. zapota.
Тема - темы
Plant Extracts/pharmacology , Manilkara/chemistry , Phenols/isolation & purification , Phenols/pharmacology , Saponins/isolation & purification , Saponins/pharmacology , Sterols/isolation & purification , Sterols/pharmacology , Triterpenes/isolation & purification , Triterpenes/pharmacology , Carotenoids/isolation & purification , Carotenoids/pharmacology , Sapotaceae/chemistry , Phenolic Compounds/analysis , Medicine, TraditionalРеферат
In order to better understand the biochemical interactions and to identify new biomarkers for plant resistance against insects, we proposed a suitable lipophilic profiling method for insects and their host plants. The critical components of GC-MS based analysis are: sample amount, extraction, derivatization, temperature gradient, run time, and identification of peaks. For lipophilic metabolite profiling of maize and sorghum, and their insect pest, spotted stem borer larvae, we recommend 100 mg sample weight for seeds and insect samples (whole insect body), and 200 mg for seedlings. Maize and sorghum seeds required less time for fat extraction in comparison to their seedlings and the pest fed on these seedlings. GC-MS was standardized for better separation and intensity of peaks using different temperature gradients in the range of 180-300 C. A total of 48 lipophilic compounds encompassing various classes based on their functional groups such as fatty acids, fatty alcohols, hydrocarbons, sterols and terpenoids, vitamin derivative, etc. were separated in the seedlings (30), seeds (14), and the pest (26) in the retention time range of 3.22 to 29.41 min. This method could be useful to study nutritional aspects of different field crops in relation to various stresses apart from the analysis of lipophilic compounds for better understanding of insect-plant interactions.
Тема - темы
Animals , Fats/analysis , Fats/isolation & purification , Fatty Acids/analysis , Fatty Acids/isolation & purification , Fatty Alcohols/analysis , Fatty Alcohols/isolation & purification , Gas Chromatography-Mass Spectrometry/instrumentation , Gas Chromatography-Mass Spectrometry/isolation & purification , Gas Chromatography-Mass Spectrometry/standards , Lipids/analysis , Lipids/isolation & purification , Moths/chemistry , Moths/growth & development , Plant Extracts/chemistry , Seedlings/chemistry , Seeds/chemistry , Sorghum/chemistry , Sterols/analysis , Sterols/isolation & purification , Terpenes/analysis , Terpenes/isolation & purification , Zea mays/chemistryРеферат
From Ficus pandurata Hance fruits, six triterpenes and three sterols were isolated. The structure of these compounds were elucidated using physical and spectral characters including IR, [1]H, [13]C-NMR including DEPT experiment and MS
Тема - темы
Plant Extracts , Pentacyclic Triterpenes/isolation & purification , Sterols/isolation & purificationРеферат
The chemical investigation of Plantago major L. and P. lagopus L. was carried out. Oleanolic acid, beta sitosterol, campesterol and stigmasterol were isolated from the light petroleum extract. Luteolin and 6-hydroxy luteolin were isolated from the ether fraction of both plants. While the ethyl acetate fraction of P. major L. afforded three phenolic glycosides, viz; acteoside, luteolin-7-O-glucoside and 6-hydroxy luteolin-7-O-glucoside, that of P. lagopus L. afforded three 7-O-arabinosides of apigenin, luteolin and 6-hydroxy luteolin. The chemotaxonomic significance of the isolated arabinosides from P. lagopus L. was discussed
Тема - темы
Sterols/isolation & purification , Flavones/isolation & purificationРеферат
Se describe un nuevo método de análisis cualitativo para detectar la presencia de colesterol y de grasas vegetales en la mantequila y en otros productos lácteos, basado en la parte insaponificable de los ésteres glicéridos constituyentes de la grasa láctea, con el objeto de separar la parte insaponificable (la cuál esta constituida por los esteroides: colesterol, sitosterol, etc.), de la parte saponificable. La saponificación es seguida de la extracción con el solvente adecuado, para la posterior identificación de los compuestos señalados