نتایج جستجو برای: ciocalteu method
تعداد نتایج: 1630456 فیلتر نتایج به سال:
Abstract Stachys lavandulifolia is from mint family and Labiatae species and grows in different parts of our country sporadically. The purpose of this study is to investigate the chemical properties of Stachys lavandulifolia Ethyl acetate extract. In this study, the Ethyl acetate extract was provided using maceration method. The extract then was defatted and solvent removal performed in a...
all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...
Background: Cisplatin has cytotoxic effects through free radical generation. Reports indicate that various members of Pinaceae family may have antioxidant properties. In this study we investigated the cytoprotective effects of needle volatile oil and bark extract of Pinus eldarica in hepatoma G2 (HepG2) cell line. Methods: Using the maceration technique, we obtained the ethanolic extract of ...
for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...
Objective: In traditional medicines, Imperata cylindrica (hereinafter referred to as I. cylindrica) roots are more frequently used than its leaves. The aim of this study was determine three parameters, namely the content total phenolic compounds, flavonoid content, and antioxidant activity leaves extracts. Then, root extract parameters were a comparison evaluate benefits herbal medicine.
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Waru leaf (Hibiscus tiliaceus) is plant that contains natural flavonoids and phenolic compounds useful as an antioxidant. Flavonoids phenolics can be extracted optimally if using a suitable extraction solvents. This study aims to determine the total flavonoid, phenolic, antioxidant levels of waru extract several The flavonoid content was tested AlCl3 colorimetric method, Folin-Ciocalteu DPPH me...
Background: Coconut is a tropical fruit well known for its essential oils that have been recognized for their biological activities since ancient times. There have been no previous investigations on the essential oils from coconut shells. Method: The shell extract of Cocos nucifera (L.) was prepared by the Soxhlet method and total phenolic content (TPC) in the extract was determined by Folin-Ci...
A study was conducted in order to determine the content of phenolic compounds and antioxidative activity of extracts from Flammulina velutipes. Water and ethanolic, methanolic, acetone (70% v/v) extracts were prepared from lyophilized fruiting bodies of mushrooms. Different extraction techniques were used: ultrasonication and stirring by a rotary shaker at ambient temperature and at 50oC, and a...
The roots of Cochlospermum regium, popularly known as "algodãozinho-do-cerrado," are used for the treatment of genitourinary infections. However, the removal of their subterranean structures results in the death of the plant, and the use of the leaves becomes a viable alternative. Therefore, the antimicrobial activity of Cochlospermum regium leaf's ethanolic extract and its action on the biofil...
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