Characterization and Quantification of Triterpenes in the Neotropical Medicinal Plant Souroubea sympetala (Marcgraviaceae) by HPLC-APCI-MS
نویسندگان
چکیده
منابع مشابه
extraction and characterization of allium irancum plant extract and its application in the green synthesis of silver nano particles and oxidation of thiocarbony1 compounds
سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...
The spider Paracoelotes birulai: detection and structure elucidation of new acylpolyamines by on-line coupled HPLC-APCI-MS and HPLC-APCI-MS/MS
The lyophilized venom of the spider Paracoelotes birulai (Araneidae: Amaurobiidae) has been analyzed. A no. of acylpolyamines were found and sepd. By online coupled high-performance liq. chromatog. and atm.-pressure chem.-ionization mass spectrometry, the structures of the three most abundant compds. PB 490 (N-(16-guanidino-4-hydroxy-4,8,12-triazahexadecyl)-2-(4-hydroxyindol-3-yl)acetamide), PB...
متن کاملDetection of isorhamnetin glycosides in extracts of apples (Malus domestica cv. "Brettacher") by HPLC-PDA and HPLC-APCI-MS/MS.
Extracts of apple fruits (Malus domestica cv. "Brettacher") were analysed by HPLC with photodiode array detection. An unknown peak was monitored displaying the same retention time as isorhamnetin 3-O-glucoside. Preliminary identification of the isorhamnetin aglycone was performed by comparison of UV spectral data of the unknown compound with a reference substance. Using atmospheric pressure che...
متن کاملAnalysis of a Brazilian green propolis from Baccharis dracunculifolia by HPLC-APCI-MS and GC-MS
Ethanol and dichloromethane extracts of a Brazilian green propolis from Baccharis dracunculifolia were analyzed by HPLC-APCI-MS and GC-MS, respectively. The HPLCAPCI-MS technique, at the positive mode, furnished a complete and unequivocal chemical composition of the green propolis sample. It serves as fi ngerprint for different propolis samples. The composition of the ethanol extract consisted ...
متن کاملSimultaneous quantification of opiates, cocaine, and metabolites in hair by LC-APCI-MS/MS.
A quantitative LC-APCI-MS/MS method for simultaneous measurement of opiates, cocaine, and metabolites in hair was developed and validated. Cocaine and opiates were extracted from pulverized hair via sonication in methanol at 37 degrees C for 3 h. Samples were cleaned up using solid-phase extraction. LC separation was achieved in 20 min with identification and quantification by selected reaction...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Natural Product Communications
سال: 2008
ISSN: 1934-578X,1555-9475
DOI: 10.1177/1934578x0800301118