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Supercritical carbon dioxide extraction and fractionation of hyper for in and adhyperforin from St. John's Wort (Hypericum perforatum L.)
(CHISA 2006 - 17th International Congress of Chemical and Process Engineering, 2006)
Plants of the genus Hypericum have been used as traditional medicinal plants in various parts of the world. St. John's Wort (Hypericum perforatum L.) has been reported as an antidepressive, antiviral, antimicrobial, ...
Study of lipase-catalyzed synthesis of ascorbyl oleate using response surface methodology
(6th Central European Congress on Food, CEFood 2012, 2012)
L-ascorbic acid has good antioxidative properties but its efficiency in stabilizing fats and oils in products with high lipid content is negligible due to its hydrophilic characteristics. On the other hand, fatty acid ...
Effect of fermentation by Streptomyces sp. on antioxidant properties of spent coffee extracts
(6th Central European Congress on Food, CEFood 2012, 2012)
During espresso coffee preparation large amounts of spent coffee residues are produced and discarded daily as a part of the communal waste. However, there is a great potential in recycling this type of waste for extraction ...
Pretreatment of used vegetable oil using CaO and CaO-ZnO for biodiesel production
(Czech Society of Chemical Engineering, 2014)
Mechanochemically synthesized CaO·ZnO catalyst for biodiesel production
(20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012, 2012)
The transesterification of triglycerides (vegetable oil) with methanol using CaO·ZnO mixed oxides catalyst were conducted to produce Fatty Acid Methyl Esters (FAME), i.e. biodiesel. The catalysts were used in the methanolysis ...
Enhanced Cell-ID+TA GSM positioning technique
(IEEE, New York, 2005)
The majority of existing GSM positioning techniques can be described as either costly or with limited performance. Basic GSM positioning techniques Cell-ID and Cell-ID+TA can be upgraded to decrease positioning error. We ...
Novel hydrogel nanocomposites based on alginate and silver nanoparticles
(24th European Conference on Biomaterials, EBS 2011, 2011)
Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica
(6th Central European Congress on Food, CEFood 2012, 2012)
Cinnamic acid and its esters are widespread throughout plant kingdom and therefore, they are common components of our daily diet. Ethyl cinnamate has been approved by FDA for direct addition to food for human consumption. ...
Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers
(Spie-Int Soc Optical Engineering, Bellingham, 2011)
We present the results on the structure and the optical properties of noble metal (Ag, Au) and oxide (ZnO) nanoparticles synthesized by various methods in different polysaccharide matrices such as chitosan, glycogen, ...
Investigation of probiotic potential of Leuconostoc sp. and Lactobacillus sp. natural isolates from non-commercial milk and water kefir
(6th Central European Congress on Food, CEFood 2012, 2012)
Non-commercial milk and water kefir grains (from a household in Belgrade, Serbia) were used for isolation of lactic acid bacteria on TSA, MRS and M17 agar. Preliminary identification has been performed according to ...