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Experimental Investigation of Thermal Performance for Selected Oils for Solar Thermal Energy Storage and Rural Cooking Application [PDF]
, 2022 The thermal performance of locally available oils in Uganda have been experimentally investigated to determine their suitability for heat transfer and solar thermal energy storage. Sunflower oil and palm oil, both local vegetable vegetable oils and Shell thermia B, commonly used in the local industries as a heat transfer fluid were used in the study ...
arxiv +1 more source
HPLC evaluation of the minor lipid components of by-products resulting from edible oil processing
Grasas y Aceites, 2006 An analytical evaluation of some by-products resulting from edible oil refining processing steps has been carried out. By-product samples were taken from four different local refineries that apply chemical refining technology.
Mohamed Hassan EL-Mallah +2 more
doaj +1 more source
Evaluation of peanut hulls as an alternative to bleaching clays
Grasas y Aceites, 2011 Peanut hulls (PNH) were carbonized at different temperatures, times, and evaluated at different concentrations as an alternative to bleaching clays. Evaluation of bleached crude soybean oil with PNH was based on their delta free fatty acids, reduction in
M. M. M. Hassanein +2 more
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Direct observations of rising oil droplets deformed by hydrocarbonoclastic bacteria [PDF]
, 2022 In marine environments, microscopic droplets of spilled oil can be transported over tens or hundreds kilometers in the water column. As this oil is biodegraded, growing bacteria on the droplets' surface can deform the oil-water interface to generate complex shapes and significantly enlarge droplets. A complete understanding of the fate and transport of
arxiv +1 more source
Propylenated fatty acids as emulsifiers
Grasas y Aceites, 1999 Hydroxy propylenyl stéarate, palmitate, laurate, oléate and linoleate were prepared by reaction of propylene oxide with fatty acid at 160 °C for five hours stirring in presence of potassium hydroxide as a catalyst. Physico-chemical properties of the five
Y. El-Shattory +2 more
doaj +1 more source
Lipase - Catalyzed glycerolysis of sunflower oil to produce partial glycerides.
Grasas y Aceites, 1998 Partial glycerides were prepared by glycerolysis of sunflower oil in presence of lipase enzyme as catalyst. Six lipases of different origins were used and compared for their catalytic activity.
F. A. Zaher +2 more
doaj +1 more source
Evaluation of the biological activity of sunflower hull extracts
Grasas y Aceites, 2012 This work was planned with the aim of adding value to sunflower seed hulls, a waste product of the oil industry by preparing a sunflower hull phenolic extract rich in chlorogenic acid (CGA).
F. S. Taha +3 more
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The engulfment of aqueous droplets on perfectly wetting oil layers [PDF]
J. Fluid Mech. 915 (2021) A66, 2020 Place a droplet of mineral oil on water and the oil will spread to cover the water surface in a thin film -- a phenomenon familiar to many, owing to the rainbow-faced puddles left behind leaking buses on rainy days. In this paper we study the everted problem: an aqueous droplet deposited onto a deep layer of silicone oil.
arxiv +1 more source
Grasas y Aceites, 1996 Bleached cottonseed oil, partially hydrogenated palm oil and margarine were stored in metal (tin) cans and white plastic (polyethylene) bottles with air in head space and served at room temperature during the whole period of investigation. The analytical
Y. El-Shattory, M. A. Saadia, F. Saeid
doaj +1 more source
Studies on changes in lipid profiles of new varieties of rape during seed maturation
Grasas y Aceites, 2001 Changes in lipids of three newly developed varieties of rapeseed during seed maturation were studied. Triacylglycerol molecular species, fatty acid composition, whole sterol, and four sterol lipids as well as tocopherol were determined at different ...
Safinaz M. El-Shami +2 more
doaj +1 more source