*Correspondence: Ronghou Liu, Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China e-mail: [email protected] Different mass fractions (0, 3, 6, 9, 12, and 15%) of ethyl acetate were added to bio-oil for improving its storage stability during storage at 40°C for 35 days. For different bio-oils d...

Clerodendron inerme belongs to the family Verbenaceae found in southern region of India, which is used in the treatment of Veneral diseases, Rheumatism, Elephantiasis and Intermittent fever. The qualitative phytochemical screening showed the presence of alkaloid, steroids, phenols, flavanoids, tannins, carbohydrates, fixed oils and volatile oils. The Petroleum ether, Chlorofrom, Ethyl acetate, ...

Calotropis procera is a medicinal plant whose pharmacological properties are associated with its latex. Here, the Calotropis procera latex fractions were investigated in an attempt to trace its phytochemical profile and measure its anti-inflammatory and toxicity activity. The crude latex was partitioned, yielding five fractions (49.4% hexane, 5.2% dichloromethane, 2.0% ethyl acetate, 2.1% n-but...

The loss of leaves by plant species found in the Cerrado (Brazilian savanna) is an energetically expensive process due to adverse environmental conditions and predation by herbivory. The mature leaves have adaptations which minimize these events. However, the young individuals lack these structures and produce high leaf concentrations of secondary metabolites as a form of protection. These comp...

Red fruit (Pandanus conoideus Lam) is one of the fruits commonly consumed as diet by societies, especially in Papua, Indonesia. Preliminary research revealed that among three extracts of red fruit evaluated, ethyl acetate extract had the highest antiradical activities; therefore, this research was directed to fractionate ethyl acetate extract, evaluate antioxidant activities using in vitro meth...

Leaves of Catharanthus roseus (L) G. Don (72 kg) were collected from a field grown in the Karachi Uni­ versity campus. The crude alkaloids (134 g) obtained from the alcoholic extract of the air-dried leaves (24 kg) of the plant, were dissolved in chloroform (450 ml) and extracted with pH 3 phosphate buffer (1 1). The chloroform layer was dried (anhydrous Na2S 0 4), concentrated to 1/3 of its or...

Background and objectives:Lallemantia iberica (Lamiaceae) is a medicinal plant distributed in different parts of Iran. This research, has evaluated the phytochemical constituents and antioxidant activity of the aerial parts of the plant. Methods: Different chromatographic methods such as column chromatographies using Silica gel (normal and revers...

alkaline hydrolysis of ethyl acetate is essentially an irreversible and second order reaction. industrial importance of the reaction product, sodium acetate, necessitate for process improvement in terms of maximum conversion and economical usage of raw materials. statistical design of experiments was utilized to enhance conversion in both batch and plug flow reactors.a full two level factorial ...

The objectives of this study was to evaluate the possible in vitro antioxidant potential and analysis of the active polyphenols in ethyl acetate and methanol extracts of leaves of Leonurus sibiricus L. Alcoholic extraction of Leonurus sibiricus leaf was carried out in two different solvents (ethyl acetate and methanol) on the basis of their different polarity. The in vitro antioxidant efficacy ...

Mussaenda 'dona aurora' (sepals) has been investigated for its hepatoprotective and antioxidant activities. The highest activity was observed in the ethyl acetate fraction. The separation of the ethyl acetate fraction gave two iridoids, sanshiside-D and lamalbide. Sanshiside-D exhibited a hepatoprotective activity greater than silimarin as was evidenced by significant reduction of ALT and AST i...