oxidative stability of seed oils extracted with supercritical carbon dioxide

dry-milled corn germ, soybean and cottonseed flakes were extracted (at 70-90 c and 12,000 psi) with supercritical carbon dioxide (sc-co//2) to yield crude oils. oxidative stability of the crude oils was determined and compared to similar products obtained by conventional expeller and/or prepress solvent extraction. under schall oven stora..

reduction of glyceride oils to fatty alcohols with sodium borohydride-t-butanol-methanol

various glyceride oils were reduced to fatty alcohols by refluxing them with sodium borohydride in a mixture of t-butanol and methanol. chemical characteristics and infrared spectral analyses showed the products to consist mainly of alcohols and the unreduced oils. olefinic unsaturation was not affected. castor, coconut and mustard oils y..

effect of alkyl carbon chain length and ethylene oxide content on the performance of linear alcohol ethoxylates

a grid of 30 surfactants varying from c//8 to c//1//8 in carbon chain lenght and from 40 to 80 in ethylene oxide (eo) content were examined to determine the effect of molecular structure on the physical properties (density, melting point, solution viscosity) and performance properties (surface activity, detergency, hard-surface cleaning, ..

influence of thyme and clove essential oils on cottonseed oil oxidation

simple model systems composed of refined cottonseed oil and thyme oil or clove oil, without additives, were designed to approximate conditions in natural oils in order to study their oxidation behavior. three methods were used to follow cottonseed oil oxidation, i.e., coupled oxidation with $beta$ -carotene, the tba test and hydroperoxide..

polymeerialan kehitys: luonnon polymeereista synteettisiin erikoispolymeereihin. $left bracket$ from natural polymers to advanced specialty polymers $right bracket$

a brief resume is presented of the historical development of polymer research from the use of naturally occurring macromolecular materials like rubber, silk, wool and cotton, to the utilization of sophisticated man-made polymers in the fibre, food, paper and electronics industries and in medicine. the great expansion of polymer science an..

microcomputer control of particle concentrations in a cotton dust exposure system

a cotton dust animal exposure system has been modified to incorporate a microcomputer feedback loop to monitor particle concentrations. the loop's major components are a minature real-time aerosol monitor (miniram) to estimate concentrations and a microcomputer to read the miniram's data and to control a stepper motor that adjusts the amo..

urorost toxicity

with respect to its acute toxicity parameters upon intragastric introduction into experimental animals, the plant growth stimulator urorost belongs to the third class of risk according to the soviet classification. urorost possesses a weak cumulation of functional character and has a slight irritating effect on the mucous membranes at a t..

simulation - the cornerstone of the lhx demonstration/validation program: first team approach

the required improvements to the light helicopter fleet are about to be satisfied through the army's number one program - the lhx. this is the challenge to industry. the first team, having been established and working for over three years, has willingly, aggressively, and professionally accepted the challenge - the demonstration/validatio..

histamine-dependent reactions in patients with byssinosis

the purpose of this study was to analyze the mechanism of histamine action in histamine-dependent reactions of neutrophils and lymphocytes in patients with byssinosis and chronic asthmatic bronchitis due to cotton and flax dust inhalation. an estimate of the histamine content in blood serum, the receptor/histamine distribution of lymphocy..

case of bullous contact dermatitis induced by butifos

the authors monitored and treated a 57-year-old farmer with hand skin dermatitis induced by exposure to butifos, a defoliant used in cotton harvesting. the patient complained about itching and dizziness. he was treated by a rivanol solution and other drugs and was clinically cured in 18 days. the case is of practical interest to researche..