کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8880145 | 1624793 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyphenolics in leaves of Paris polyphylla: An important high value Himalayan medicinal herb
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
ABTSAAETPTZGAEPBDFRAPPDADPPHHClCCDROS - ROSphoto-diode array - آرایه دیود عکاسیAntioxidants - آنتی اکسیدانhydrochloric acid - اسید هیدروکلریک یا اسید کلریدریک یا جوهر نمک Optimization - بهينه سازيExtraction optimization - بهینه سازی استخراجTAE - توResponse surface methodology - روش سطح پاسخRSM - روششناسی سطح پاسخIHR - شماCentral composite design - طراحی مرکب مرکزیPlackett-burman design - طرح Plackett-BurmanTotal tannins - مجموع تانن هاascorbic acid equivalent - معادل اسید اسکوربیکtannic acid equivalent - معادل اسید تاننGallic acid equivalent - معادل اسید گالیکquercetin equivalent - معادل کورستینPolyphenols - پلیفنلهاferric reducing antioxidant power - کاهش قدرت آنتی اکسیدان آهنhigh-performance liquid chromatography - کروماتوگرافی مایعی کاراHPLC - کروماتوگرافی مایعی کاراTotal flavonoids - کل فلاونوئیدهاTotal phenolics - کل فنولیکReactive oxygen species - گونههای فعال اکسیژنMedicinal plants - گیاهان دارویی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Paris polyphylla, a source of saponins has not been much studied for polyphenolics and its antioxidant potential. In this investigation, optimization of extraction conditions for polyphenolics compounds using Response Surface Methodology (RSM) in P. polyphylla leaf samples was conducted for the first time to look for alternate and renewable source of such compounds. A total of 32 experiments were conducted for screening of variables (i.e. ethanol concentration, sample-to-solvent ratio, HCl concentration, extraction temperature and time) using Plackett-Burman and central composite design. Among all the tested independent factors, ethanol concentration (X1), sample-to-solvent ratio (X2), and extraction temperature (X3) showed significant variations in polyphenolic content total phenol (TP), total flavonoids (TF) and total tannin (TT) and in vitro antioxidant activity (ABTS, DPPH and FRAP). All the response models showed significant model fitness and a non-significant lack of fit. Under optimal extraction condition, which includes 60% ethanol, 1:40 sample-to-solvent ratio, 45â¯Â°C of extraction temperature for 45â¯min, maximum content of polyphenolics, namely TP (5.36â¯mg GAE/g dw), TF (44.27â¯mg QE/g dw), TT (65.41â¯mg TAE/g dw), ABTS (2.28â¯mM AAE/g dw), DPPH (12.30â¯mM AAE/g dw) and FRAP (0.31â¯mM AAE/g dw) were found. Response values were found to be closer to the model predicted value. Further, High Performance Liquid Chromatography (HPLC) analysis of extract obtained under optimal condition, revealed the presence of 5 phenolic compounds. The present study was found useful in exploring P. polyphylla species for polyphenolics and antioxidant potential under optimal extraction condition, which can be of use for pharmaceutical and nutraceutical industries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 117, July 2018, Pages 66-74
Journal: Industrial Crops and Products - Volume 117, July 2018, Pages 66-74
نویسندگان
Tariq Mohd., Tarun Belwal, Indra D. Bhatt, Veena Pande, Shyamal K. Nandi,