نتایج جستجو برای: vegetable oils
تعداد نتایج: 47131 فیلتر نتایج به سال:
Biodiesel consists of monoalkyl esters of long chain fatty acids. It is produced from vegetable oils or fats either by chemical transesterification with methanol or ethanol. The cost of lipases and the relatively slower reaction rate remain as the major obstacles for enzymatic production of biodiesel as opposed to the conventional chemical processes. The enzymatic process offers several advanta...
Objective: To assess the implications of new recommendations for essential fatty acids, vitamin D and vitamin E on the classification of margarines and vegetable oils as ‘extras’ in the current Australian Guide to Healthy Eating. Design: The role of margarines and vegetable oils as sources of essential fatty acids, vitamin D and vitamin E was examined in two ways. First, data from the 1995 Nati...
Feedstocks for industrial applications ranging from polymers to lubricants are largely derived from petroleum, a non-renewable resource. Vegetable oils with fatty acid structures and storage forms tailored for specific industrial uses offer renewable and potentially sustainable sources of petrochemical-type functionalities. A wide array of industrial vegetable oils can be generated through biot...
The aim of this study was to compare the prediction efficiency of different types of linear calibration models using near infrared absorbance spectral data of vegetable oils. The applied model types were PCA-MLR (Principal Component Analysis-Multiple Linear Regression), PLS (Partial Least Squares regression), PCA-ANN (Principal Component Analysis-Artificial Neural Network) and GA-ANN (Genetic A...
A rapid, accurate microtechnique has been developed for gas chromatographic determination of the fatty acid composition of small (2-3 micro l) samples of vegetable oils. This microtechnique combines transesterification and sample injection into a single operation. The fatty acid compositions of soybean, linseed, and safflower oils thus determined are compared with those obtained by the usual tw...
In view of the relatively few communications on pneumonia in children following the aspiration of oil or fat, it seems desirable to report twot cases of this kind which were observed on the Pediatric Service of the New Haven Hospital. Pinkerton"'2 reviewed the literature on this subject and reported six cases from the Children's Hospital in Boston. All of these patients died of pneumonia follow...
DOSTÁLOVÁ J., HANZLÍK P., RÉBLOVÁ Z., POKORNÝ J. (2005): Oxidative changes of vegetable oils during microwave heating. Czech J. Food Sci., 23: 230–239. The oxidative stabilities of pork lard, sunflower, zero-erucic rapeseed, peanut and high-oleic peanut oils were tested under microwave heating conditions. Vegetable oils and lard were heated in a microwave oven for up to 40 min between 25°C and ...
The predicted shortage of fossil fuels and related environmental concerns have recently attracted significant attention to scientific and technological issues concerning the conversion of biomass into fuels. First-generation biodiesel, obtained from vegetable oils and animal fats by transesterification, relies on commercial technology and rich scientific background, though continuous progress i...
Canola has the lowest content of saturated fat amongst oils marketed in North America, and therefore is a valuable nutritional component for food industry and household use. Oils, extracted from vegetable tissues, contain a number of impurities which have to be removed in order to make the oil suitable for human consumption. One such impurity consists of waxes, which are high melting esters of ...
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