منابع مشابه
Lubricant basestocks from vegetable oils
Oil Chemical Research. USDA l-ARS-NCAUR. 1815 N. U;liuersity Street, Peoria, IL 61604, USA Accepted 8 October 1999 Compared to the lubricants made of petroleum, vegetable-based lubricants are much more biodegradable but inferior in many other technical characteristics. The basestock typically contributes to more than 80% of lubricant and must meet performance criteria in such aspects as cleanli...
متن کاملThe Determination of Stigmastadienes in Vegetable Oils
The development by collaborative study of a standardised method for the determination of the stigmastadienes content in vegetable oils is described. The procedure involves the isolation of the unsaponifiable matter in the oil ands its fractioning on a silica gel column. The fraction containing the steroidal hydrocarbons is then analysed by capillary gas chromatography and the quantitative asses...
متن کاملSolid Phase Extraction: Applications to the Chromatographic Analysis of Vegetable Oils and Fats
Adequate sample preparation techniques help to ensure an accurate and precise estimation of the true value of the food components. Solid phase extraction (SPE) is a convenient approach for sample preparation in the chromatographic analysis of edible fats as it requires a small amount of the test sample, low volumes of organic solvents, whereas the treatment is accomplished in a greatly shorter ...
متن کاملImproved extraction of vegetable oils under high-intensity ultrasound and/or microwaves.
Ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) techniques have been employed as complementary techniques to extract oils from vegetable sources, viz, soybean germ and a cultivated marine microalga rich in docosahexaenoic acid (DHA). Ultrasound (US) devices developed by ourselves, working at several frequencies (19, 25, 40 and 300 kHz), were used for US-based protoc...
متن کاملVegetable oils as protectants against nematode infections.
In this experiment, 0, 0.125, 0.25, 0.5, and 1.0 ml of each oil dissolved in 1 ml of 95 % ethanol was added to 1 kg of soil containing 370 P. penetrans per kg, and incorporated by shaking. After 10 days at 22 ± 3 C, a four-week-old tomato (Lycopersicon esculentum Mill cv. Bonny Best) seedling was planted in each of six 5-cm-diam plastic pots containing 100 g of treated or untreated infested soi...
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ژورنال
عنوان ژورنال: Journal of Industrial & Engineering Chemistry
سال: 1922
ISSN: 0095-9014,1943-2968
DOI: 10.1021/ie50153a029