Results 1 to 10 of about 822,071 (346)

Crowd oil not crude oil [PDF]

open access: yesNature Communications, 2019
AbstractClimate change represents an existential, global threat to humanity, yet its delocalized nature complicates climate action. Here, the authors propose retrofitting air conditioning units as integrated, scalable, and renewable-powered devices capable of decentralized CO2 conversion and energy democratization.
Roland Dittmeyer   +3 more
openaire   +5 more sources

Evaluation of the biological activity of sunflower hull extracts

open access: yesGrasas 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
doaj   +1 more source

HPLC evaluation of the minor lipid components of by-products resulting from edible oil processing

open access: yesGrasas 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

Lipase - Catalyzed glycerolysis of sunflower oil to produce partial glycerides.

open access: yesGrasas 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 peanut hulls as an alternative to bleaching clays

open access: yesGrasas 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
doaj   +1 more source

Particles at Oil–Air Surfaces: Powdered Oil, Liquid Oil Marbles, and Oil Foam [PDF]

open access: yesACS Applied Materials & Interfaces, 2015
The type of material stabilized by four kinds of fluorinated particles (sericite and bentonite platelet clays and spherical zinc oxide) in air-oil mixtures has been investigated. It depends on the particle wettability and the degree of shear. Upon vigorous agitation, oil dispersions are formed in all the oils containing relatively large bentonite ...
Binks, Bernard P.   +3 more
openaire   +3 more sources

Propylenated fatty acids as emulsifiers

open access: yesGrasas 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

Effects of organic plant oils and role of oxidation on nutrient utilization in juvenile rainbow trout (Oncorhynchus mykiss) [PDF]

open access: yes, 2012
The study compared the effect of four either fresh or force oxidized organic plant oils in diets for juvenile rainbow trout (Oncorhynchus mykiss) in which 47% of conventional LT fish meal protein was substituted by a mixture of 3 organic plant protein ...
A. Jokumsen   +37 more
core   +1 more source

Chemical characteristics and fatty acid composition on oils and fats stored in different packaging materials

open access: yesGrasas 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

open access: yesGrasas 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

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