This study aimed to investigate the phytochemical composition, alpha-amylase and pancreatic lipase inhibitory activities anti-inflammatory antioxidant properties of crude extracts (petroleum ether, ethyl acetate n-butanol) obtained from aerial parts Ephedra altissima. The characterization phenolic compounds in was performed by high performance liquid chromatographyphotodiode array detection-ele...

This paper presents a set of surfactant-selection guidelines that can be used to design bio-based semi-synthetic metalworking fluid (MWF) microemulsions as a renewable alternative to conventional petroleum formulations. Ten surfactant classes (six anionic and four nonionic) with different head and tail structures and three vegetable base oils (canola oil, soybean oil, and a fatty acid trimethyl...

As petroleum feedstocks start to dwindle, it is becoming more important to find acceptable replacements for materials made from these feedstocks. Polyurethanes have classically been synthesized from petroleum-based feedstocks, and depending on its properties, polyurethanes can be used in everything from foams, to construction plastics. In recent years there has been an increasing amount of rese...

For investigations concerning the mode of action of the clearing factor, estimations of free fatty acids in mixtures of normal rat plasma and lipaemic dog plasma were performed using a modification of van de Kamer's (1948) method as described for faeces. Because the method developed may be of value for similar or other uses, it is given here. In a 100 ml. flask 2 ml. of the plasma-mixture, cont...

The deployment of next-generation renewable biofuels can be enhanced by improving their compatibility with the current infrastructure for transportation, storage and utilization. Propane, the bulk component of liquid petroleum gas, is an appealing target as it already has a global market. In addition, it is a gas under standard conditions, but can easily be liquefied. This allows the fuel to im...

Metalworking fluids (MWFs) are widely used in machining process to improve its performance and product quality. It acts as a coolant and lubricant to reduce heat between the contact of two surfaces. However, commercial MWFs used in the industry were usually from petroleum-based oil which is toxic to the environment, difficult to dispose and caused significant health. Therefore, it is essential ...

The antifungal activity of aqueous, petroleum ether, benzene, chloroform, methanol and ethanol extracts and alkaloid extract of Prosopis juliflora (Sw.) DC. leaves (Mimosaceae) was evaluated for antifungal activity by poisoned food technique against Alternaria alternata a causal organism of brown spot of tobacco. Aqueous extract recorded highly significant antifungal activity at 24% concentrati...

Partial oxidation of 2-, 3and 4-picolines has received much attention because their oxidation products, picolinic acid, nicotinic acid and isonicotinic acid, respectively, are valuable intermediates of vitamins, food additives and pharmaceuticals1)~16). For example, 2-pyridinecarbaldehyde and picolinic acid are vitamins, feed stocks for synthesis of physiologically active substances, dyes and o...

When inorganic carbon is converted to living matter during photosynthesis, there is an isotope effect and the carbon-containing compounds of cells have a slightly lower C13 concentration than the carbonate and carbon dioxide of the environment.' Craig2 has reviewed the existing data on carbon isotope abundances in nature. Park and Epstein3 4 have recently reported on some carbon isotope fractio...

The advancement of microbial processes for the production of renewable liquid fuels has increased with concerns about the current fuel economy. The development of advanced biofuels in particular has risen to address some of the shortcomings of ethanol. These advanced fuels have chemical properties similar to petroleum-based liquid fuels, thus removing the need for engine modification or infrast...