نتایج جستجو برای: total phenolic contents

تعداد نتایج: 887124  

2014
Purbasha Pramanik Ratna Bhattacharjee

Red Amaranth (Amaranthus tricolor) and green Amaranth (Amaranthus viridis) are two very important leafy vegetables consumed in most parts of India, not only for their flavours, but also for their pharmacological activities. The cooking processes are different in the different part of this country, and therefore, the present study was designed to analyze their in vitro antioxidant profile before...

2014

The present study was designed to evaluate and compare the phenolic (total phenols and flavonoid) contents and antioxidant activity of aqueous extract of Momordica foetida (AEMF) and ethanolic extract of Momordica foetida (EEMF) extract of Momordica foetida leaves; a popular medicinal plant used for traditional medicine preparations. The antioxidant activity of both extracts was assessed using ...

2014
Mohaddese Mahboubi Mohsen Taghizadeh Nastaran Kazempour

BACKGROUND Pycnocycla spinosa (P. spinosa) a member of the Umbelliferae family is traditionally used for treatment of different ailments. OBJECTIVES This study aimed to evaluate the total phenolic and flavonoid content of P. spinosa extracts (methanol, ethanol and aqueous) and their antioxidant and antimicrobial effects. MATERIALS AND METHODS The antimicrobial activity of different extracts...

Rosa canina L. is a member of Rosaceae family, which is well-known for its high phenolic contents. These compounds are known to possess antioxidant and antiradical effects. In order to compare the antioxidant and antiradical activity of wild Rosa phenolic extracts, two wild Rosa species (Rosa canina L. and Rosa pimpinellifolia L.) were selected from Takab, Oshnavieh and Qasemloo Valley of Urmia...

Journal: :Journal of agricultural and food chemistry 2011
Giuseppina Negri Erica Weinstein Teixeira Maria Luisa Teles Marques Florêncio Alves Augusta Carolina de Camargo Carmello Moreti Ivani Pozar Otsuk Renata Galhardo Borguini Antonio Salatino

Seven bee pollen samples (C1-C7) with different palynological sources were harvested from Pindamonhangaba municipality (Southeast Brazil). Methanol extracts of untreated samples (control), samples frozen at -18 °C and samples frozen and then dried were analyzed by HPLC/PAD/ESI/MS/MS. Flavonoid diglycosides of quercetin, kaempferol, isorhamnetin and patuletin were detected, together with hydroxy...

2011
Nilima S. Rajurkar S. M. Hande

The powder samples and methanol extract of 11 medicinal plants were subjected to analysis of proximate composition and measurement of antioxidant activity. Different parameters studied include phenolic contents, moisture, ash, crude fiber, fats and waxes. The assays employed were ferric reducing antioxidant power, trolox equivalent antioxidant capacity and scavenging effect on the 1,1-diphenyl-...

Background: In Nigeria, the leaves of Manihot esculenta (Crantz) are eaten as vegetables. The leaves are rich in phytochemicals, valuable and natural sources of antioxidants, and are highly useful for human health and disease prevention. This study was aimed to evaluate the in vitro inhibitory effects of two extracts derived from the plant leaves on α-glucosidase and α-amylase. The total flavon...

2016
Manal Y. Sameeh Amal A. Mohamed Ahmed M Elazzazy

Article history: Received on: 03/04/2016 Revised on: 05/05/2016 Accepted on: 30/06/2016 Available online: 26/09/2016 Marine algae are potential sources of biologically active compounds with antiviral, antimicrobial and anticancer activities. Two species of marine algae, Padina boryana Thivy and Enteromorpha sp were collected from the Red Sea. Both species were extracted with ethanol, acetone, a...

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