sulfate (Merck). The essential oil was stored at temperature of 4ºC until using (12). In order to provide different concentrations of the extract‚ Dimethyl sulfoxide (DMSO) was used. Gas chromatography/mass spectrometry analysis of essential oil Isolation and measurement of the sample was done by coupled gas chromatography device (GC/MS) SHIMADZU 17 A with SHIMADZU mass spectrometry of QP5050A model and isolation of components was conducted in Fused Silica capillary column of the DBX-5 95% (polydimethylsiloxane)
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Contents Abstract Introduction Aim Hypothesis Material Method Results Discussion Conclusion Abstract The aim of this experiment was to see whether different temperatures will affect the cell membrane‚ thus would then releases the purple pigments out of the vacuole which causes the leakage of the purplish liquid. Background Information The outermost layer is the cell wall‚ which is present only in plant cells and is made up of a carbohydrate called cellulose and also has other protein
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Biology A - Assignment 1: Cell Membranes and Temperature Background Theory Beetroot contains betalain pigments within it’s vacuole‚ which gives it it’s purple-red colour‚ it’s this pigment which leaks out as the beetroot is heated and the cells membrane begins to break down. The practicals aim is to show the effect of temperature on the cell membrane by observing the colour change of the water the beetroot was placed in. The cell membrane is important as it controls the substances enters and
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Carbohydrates General molecular formula Cn(H2O)n Appeared to be hydrates of carbon. not all carbohydrates have this empirical formula: deoxysugars‚ aminosugars Carbohydrate - polyhydroxy aldehyde‚ ketones. General characteristics Most carbohydrates are found naturally in bound form rather than as simple sugars Polysaccharides (starch‚ cellulose‚ inulin‚ gums) Glycoproteins and proteoglycans (hormones‚ blood group substances‚ antibodies) Glycolipids
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medium" refers to the art materials or artist supplies used to create a work of art. Basically‚ it’s whatever you use to make a mark upon a surface. Why is it important? It is important because without medium artist cannot do with his/her art. Pigments - A substance used for coloring or painting‚ especially a dry powder that‚ when mixed with oil‚ water‚ or another medium‚ constitutes a
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samples collected during fractional distillation were used in gas chromatography to test the purity of the distillate. When examining the vials one was missing and two had erased labels. Based on the reading from the mystery vials and the relation to the other vials the trial they could’ve come from was approximated. Based on the overall data there was very little change in the purity of the mixture. Table 3: Gas Chromatography Results from Fractional Distillate Vial trial nd20 1
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company was to reverse the advertising strategy from heavy reliance on journal advertising and press releases to direct mail advertising and trade show exhibits. The Comtec targeted to such specific spheres as materials-testing automation and chromatography automation. According to the sales statistic the Corporation should in short time make urgent changes in its course of running business taking in account the consultant`s opinion. And as we can see from the internal correspondence between the
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From the table‚ the result of dehydration of secondary alcohol is expected‚ and it undergoes E1 elimination. As supposed in the theory and mechanism‚ because elimination can occur both sides of secondary carbocation‚ so there are three products: 1-butene‚ trans-2-butene and cis-2-butene with three peaks. The main product is trans-2-butene‚ because it is the most stable compound. However‚ the result of dehydration of primary alcohol is not expected. It is supposed to form only one product‚ 1-butene
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amber or non-amber‚ and storage temperatures (4‚ 25 and 40°C) on the stability of 12 extemporaneously prepared Phenytoin oral suspension was evaluated. The concentration of Phenytoin oral suspension was evaluated using high performance liquid chromatography (HPLC)‚ in which the retention time of Phenytoin was detected at 6.3 minutes. Phenytoin oral suspension was found to be stable up to two weeks‚ retaining minimal of 76.5% of Phenytoin. Degradation could have taken place as a lower concentration
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proteins within the phospho lipid bi-layer. The acidic ph breaks the hydrogen bonds therefore denaturing the proteins and allowing beetroot pigment to secrete form the cell. 7. The ethanol solutions that were used were 11%‚ 25% and 50% ethanol. The beetroot cell was almost immediately affected by the 50% alcohol but settled as time past. On the other hand the pigment intensity increased through time with the 25% alcohol solution. The ethanol affects the beetroot cell membrane because the ethanol is
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