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Vegetable fats and oils are lipid materials derived from plants. Physically, oils are liquid at room temperature, and fats are solid. Chemically, both fats and oils are composed of triglycerides, as contrasted with waxes which lack glycerin in their structure. Although many different parts of plants may yield oil, in commercial practice, oil is extracted primarily from seeds. The melting temperature distinction between oils and fats is imprecise, since definitions of room temperature vary, and typically natural oils have a melting range instead of a single melting point since natural oils are not chemically homogenous. Although thought of as esters of glycerin and a varying blend of fatty acids, fats and oils also typically contain free fatty acids, mono- and di- glycerides, and unsaponifiable lipids. Vegetable fats and oils may or may not be edible. Examples of inedible vegetable fats and oils include processed linseed oil, tung oil, and castor oil used in lubricants, paints, cosmetics, pharmaceuticals, and other industrial purposes. From Wikipedia under the
GNU Free Documentation License  fas.usda.gov 598px x 773px | 35.50kB [source page] Export Outlook for Oilseeds Products Revised Forecast for 2001 $600 Million to $8 4 Billion From Yahoo Image Search: "Oilseeds"  brownfieldagnews.com John Perkins Fri, 28 May 2010 20:23:14 GM Soybeans were lower on technical selling, profit taking and spillover from the outside markets. The dollar was higher while the Dow and crude oil were lower following a downgrade of Spain's credit rating. ... From Google Blog Search: "Oilseeds"
 news.google.com The New Nation A concerned BADC official said the major portion of the current demand for quality pulse and edible oil seeds is now being fulfilled by farmers from their ... and more » news.google.com Grand Island Independent While biofuels are pushing demand for grain and oilseeds up, Huffman said the long-term trend in supply of grain and oilseeds is due to new technologies ... and more » news.google.com Commodity Online Mustard seed futures (July Contract) opened at Rs 534.10/20 kg and fell initially on account of poor demand of oilseeds from millers on Monday. ... and more » From Google News Search: "Oilseeds" Can you give a suggestion for a research study? Q. We are required to conduct research studies in school but my problem is that I don't have a research problem! I originally want to work with oil extraction from seeds but I'm open to suggestions. By the way, what solvents are used for oilseed extraction? Where can I get them? Experimental studies are more appreciated. Thank you very much! ^_^ Asked by Popcorn_Miyu - Sun Jun 10 21:11:02 2007 - - 2 Answers - 0 Comments A. As for the first part of your question, a choice of research topic is very much dependent on what level of school you're actually in. For the second part of your study, a general rule that chemists follow is that "like dissolves like". Oils unlike water are generally very nonpolar so solvents that would be good for extraction purposes are ones that are very nonpolar (hexanes, toluene, benzene, xylenes, etc...). Unfortunately, it is my suspicion that other compounds in those seeds are nonpolar also and so you may have to experiment with some acid/base extractions to successfully extract your compounds of interest. Hope that helps Tony Answered by Tony - Sun Jun 10 21:52:48 2007 why simarouba glauca fat did not get acceptance as edible fat? Q. Simarouba glauca is reported as a good source of edible oil. It is native to Florida and was extensively promoted in EL-Salvador. Its fat has no trans fatty acids. It could grow in arid and semiarid areas where no annuals can be grown. The claimed yield of fat per hectare is 3-5 times of the conventional oilseeds. Are quassinoids present in the cake create environmental problems? They can be used as biopesticides. Asked by Ramachandra R - Fri Dec 22 09:14:43 2006 - - 1 Answers - 1 Comments A. Here is information from the University of Agricultural Sciences, Bangalore, India on its use in India: Simarouba glauca DC, is also called as the paradise tree in its native land, El Salvador. The tree is primarily a source of oil. Seeds contain 60-65 % oil that is edible. Oil cake is an excellent source of N, P and K. The fruits provide sugar rich pulp for preparation of beverages or for juice. A fast growing tree suitable for marginal and wastelands is also an excellent soil binder. Large quantity of the leaf litter that is available through out the year makes the plant a farmers friend in more than one way. Over 100 ha of wastelands in Karnataka is already under the cover of this crop. === Here is a long article on its use as… [cont.] Answered by jd - Fri Dec 22 10:27:05 2006 Brits: Anyone concerned food prices will rise next year?
Q. I live in a rural area and have seen myself this year most crops have been reduced to around a third or are totally lost due to damage from flooding and gales - i.e. potatoes, peas, beans (+ the oilseed crops for biodiesel). We have no strawberries locally this year due to mould. Is anyone concerned that fresh food prices will go skyhigh as a result, or that there'll be shortages or panic buying later? What do you think the answer is for the future if this situation continues? Yes. For once I'm very sorry for the farmers. Like most people I imagined they were insured for this, but they're not, and so logically many will go under. The bean crop next door was beautiful and smelt so good, but then a weekend gale thrashed off all the flowers.… [cont.] Asked by The CO2 Agenda is a LIE! - Tue Jul 10 12:43:51 2007 - - 9 Answers - 0 Comments A. I suspect imports will make up the difference, but there will be a definite rise in prices and local producers will lose out. My father is a farmer, but he's one of the lucky ones - his potatoes were unaffected by the flooding. Several of our friends and relatives have lost all their crops, however, and I'm very concerned for them. I'm also concerned that it will be the supermarkets that make a higher profit and demand higher prices and the farmers who still have crops to sell will be left out in the cold again, barely making a pittance to live on. The Labour government and the EU have an awful lot to answer for - it's amazing that there is still a farming industry in the UK and this flooding is just the final straw. I doubt there… [cont.] Answered by Sarah A - Tue Jul 10 12:57:41 2007 From Yahoo Answer Search: "Oilseeds" |
Post-harvest Operations: Coconut
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