SOLVENT EXTRACTION Solvent extraction‚ also known as liquid extraction and partitioning‚ is a method to separate compounds based on their relative solubility in two different immiscible liquid‚ usually water and organic solvent. It is an extraction from one liquid phase to another liquid phrase. Liquid extraction is a basic technique in chemical laboratories‚ where it is performed using a separator funnel. This type of process is commonly performed after a chemical reaction as part of the work-up
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carrageenans are extracted from red seaweed and assume a gelatinous structure. [pic] Figure 1.Different types of carrageenan. They differ in structure‚ properties and uses. Production of carrageenan‚ particularly κ-carrageenan can be done in either of two ways. The first method‚ which is considered as the original one‚ involves the extraction of carrageenan into an aqueous solution‚ filtration to remove the seaweed residue and finally‚ the recovery of the carrageenan from the solution. Hence‚
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Can you expect to extract more DNA from a strawberry or kiwi fruit? Introduction: In the experiment we were inspecting the amount of genetic materials in fruits with different numbers of chromosomes. In the experiment‚ we mashed up a strawberry/kiwi fruit (See appendix 1 figure 2) added extraction butter and ethanol to extract the DNA. A chromosome is a long thread-like cluster of genes in the nucleus. DNA (deoxyribonucleic acid)‚ a self-replicating material which is present in nearly all living
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MULTIPLE EXTRACTION OF CAFFEINE FROM DRIED TEA LEAVES USING DICHLOROMETHANE Delos Reyes‚ K.‚ Dizon‚ G.J.‚ Enriquez‚ J.R.‚ Estrada‚ G. and Garcia C. Group 4 2G Med Tech Organic Chemistry Laboratory ABSTRACT Caffeine was extracted from dried tea leaves by multiple extraction technique. 10g of tea leaves was boiled in a solution of 4.4 g anhydrous sodium carbonate and 100ml distilled water and was extracted three times using 20 ml of dichloromethane. Theresidue was collected by decanting
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HARVESTING BANANA Regularly after nine month the banana reach its maturity and start to ripen. Banana has a tender soft skin that really easy to be ripe. To harvest banana is not like any other fruits that we can just harvest. Harvesting banana need some precaution steps to ensure no physical damage and to get the best qualities of banana for the consumer. First we have to know when the banana will reach it maturity. First and foremost check the size of the banana. The ideal size of a mature banana is
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{text:bookmark-start} Titanium powder metallurgy What is powder metallurgy (PM) and why do we use it? {text:bookmark-end} PM techniques are used to fabricate a wide variety of components. Typically a material‚ mostly metals‚ is reduced to a powdered form‚ compacted into the required shape and then sintered. After sintering‚ the component can be further machined as necessary. Powder metallurgy products are mostly used in the automotive and aerospace industries although every modern household
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The Mysterious Banana Included in many literary works are objects‚ which may seem meaningless‚ contributing to the theme of the work. In Samuel Beckett’s “Krapp’s Last Tape”‚ a dramatic work which falls into the category of Theatre of the Absurd‚ the banana is a discreet object which eludes to the meaning behind why Krapp chose that particular event to listen to while recording his last diary tape. Sigmund Freud’s theory of wish fulfillment suggests that a banana represents repressed sexuality which
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mentioned companies constantly run consumer promotion in hope to sell more than the respective competitors. Although this strategy worked well at first but with the passage of time‚ the intense consumer promotions have done little to prevent Unilever from loosing shares to its competitors. In 2004‚ Wheel (which is now RIN)‚ Unilever’s largest detergent brand ran about nine consumer promotions where as in 2005 it ran no consumer promotions at all. Consumer promotion over all is a very expensive affair
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Bananas are said to be currently the world’s third most popular fruit and evidence shows could be the oldest cultivated crop (Langdon 18). The tropical fruit is believed to have originated and first domesticated in Southeast Asia estimated around 5000 BC (Langdon 18). Due to how difficult reproducing the seedless banana plant is‚ the distribution did not stray far from Southeast Asia for thousands of years in its existence. Apparently the first Europeans to learn about it were the Greeks under
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agricultural products‚ the banana is the fourth most important food product within the least developed countries‚ being the staple food for some 400 million people (1). Of all the fruits‚ it holds first place by production volume and is amongst the five most consumed fruits on the planet (2). Some 1‚000 varieties of banana trees have been identified in more than 150 countries‚ producing around 105 to 120 million tonnes (Mt) of fruit a year. There are two main families: the sweet banana or “fruit”‚ essentially
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