Now showing items 31-40 of 38702
FURTHER STUDIES ON THE SOLVENT EXTRACTION OF COPPER (II) WITH DITHIOCARBOXYLATE DERIVATIVES OF PYRAZOL
(Sociedad Chilena de Química, 2001)
THE ENHANCEMENT OF ANTIOXIDANT COMPOUNDS EXTRACTED FROM THYMUS VULGARIS USING ENZYMES AND THE EFFECT OF EXTRACTING SOLVENT
(ELSEVIER SCI LTD, 2013)
We evaluate the total phenolic compounds (TPC) content and the antioxidant activity (AA) of extracts obtained from ground fresh thyme (FT) and depleted thyme (DT), a by-product of the process of essential oil extraction. ...
The solvent extraction separation of molybdenum and copper from acid leach residual solution of Chilean molybdenite concentrate
A procedure for recovery and separation of molybdenum (VI) and copper (II) from acid leaching residual solution of Chilean molybdenite concentrate by solvent extraction is studied. The process for the recovery of metals ...
Extraction and Determination of Oxytetracycline Hydrochloride and Oxolinic Acid in Fish Feed by Derivative Spectrophotometry of First Order
In this work is proposed the extraction and determination of oxytetracycline (OTC) and oxolinic acid (OA) in fish feed by first-derivative spectrophotometry. The extractions are carried out by parallel modality, where OTC ...
LIQUID - LIQUID EXTRACTION OF CERIUM(IV) FROM SALICYLATE MEDIA USING N-7V-OCTYLANILINE IN XYLENE AS AN EXTRACTANT
(Sociedad Chilena de Química, 2010)
Supercritical fluid CO2 extraction of essential oil from Marchantia convoluta: global yields and extract chemical composition
(Pontificia Universidad Católica de Valparaíso, 2007)
Multivariate Optimization of Pressurized Solvent Extraction of Alkylphenols and Alkylphenol Ethoxylates from Biosolids
(Sociedade Brasileira de Química, 2012)
In this study, a methodology for pressurized solvent extraction of alkylphenols (APs) and alkylphenol ethoxylates (APEOs) from biosolids was optimized by utilizing a biosolid natively containing these compounds at a high ...
Standardized plant extract, method for preparing an extract from plants of the Sclerolobium Genus, cosmetic composition, pharmaceutical composition and use of said extract
(Instituto Nacional de Propriedade Industrial (INPI), 2011-04-07)
Extracts of plants of the Sclerolobium genus are disclosed, as well as methods for preparing same and cosmetic and pharmaceutical formulations containing these extracts. These extracts can be obtained by polar and/or apolar ...