INTERNATIONALE PHARMACEUTICA SCIENCIA | Jan-March 2011 | Vol. 1 | Issue 1 | Available online http://www.ipharmsciencia.com ©2011 IPS REVIEW ARTICLE Phytochemical screening and Extraction: A Review ABSTRACT Plants are a source of large amount of drugs comprising to different groups such as antispasmodics‚ emetics‚ anti-cancer‚ antimicrobials etc. A large number of the plants are claimed to possess the antibiotic properties in the traditional system and are also used extensively by the tribal people
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DNA FINGERPRINTING DNA fingerprinting is a method of identification that compares fragments of deoxyribonucleic acid. It is a technique used to distinguish between individuals of the same species by using only samples of their DNA. It is also called DNA typing. DNA is the genetic material found within the cell nuclei of all living things. In mammals‚ the strands of DNA are grouped into structures called chromosomes. Unless dealing with identical twins‚ the complete DNA of each individual is unique
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DNA testing has overthrown the way police collect evidence in a number of criminal cases‚ especially rape and murder and consequently had a large impact on many past cases. However there are many disadvantages to DNA testing‚ such as a challenge of accuracy‚ the costs of DNA testing and the possible misuse of DNA. The prospect of a national DNA database in Australia has been heavily criticised with complaints of invasion of privacy and stigma against those with terminal diseases. Deoxyribonucleic
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How Cancer Cells Differ From Normal‚ Healthy Cells Cancer cells are very different from healthy cells. Healthy cells grow and divide like they are suppose to‚ whereas cancer cells do not grow and divide in a healthy way. So instead of acting in healthy ways as the body needs to function the cells begin to grow in unhealthy ways and affect all other cells. (http://biology.about.com/od/cellbiology/ss/normal-cells-cancer-cells.htm) There are many things that can happen to us that can cause our healthy
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microorganisms that grow and multiply in a container of culture medium.9 Culture media. Any liquid or solid preparation made specifically for the growth‚ storage‚ or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types‚ such as differential media‚ selective media‚ test media‚ and defined
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controversial topic in today’s society. The topic of race has become immensely wide spread in the arguments pertaining to it. Race is not simply a matter of the skin color‚ hair texture and facial features seen on a particular person anymore. In two readings from the English 102 Reader‚ “Does Race Exist?” by Michael J. Bamshad and “America: The Multinational Society” by Ishmael Reed‚ the arguments are regarding different topics regarding race‚ but they also have many similarities in the articles. The most dominant
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Date: 09/21/2012 Result The purpose of the experiment is to measure the amount of DNA extracted from a strawberry. In the experiment‚ we measured the absorbance of different concentrations of Methylene Blue. The data collected by our group is presented on Figure 1 and the average absorbance measured by whole class is stated on Figure 2. Table 3 shows the measurement on the amount of strawberry DNA extracted. In Figure 1 and Figure 2‚ the data will be presented Standard Curve Graph. The
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Running head: DNA Evidence and Job Description/Ethics Name Course Tutor Date How would the environment affect this fragile evidence? II. Collecting Fingerprints from a Weapon Describe how you would collect a fingerprint from a weapon that could possibly have touch DNA on it as well. UNIT 9: Job Description for Latent Print Examiner Write a job description for a Latent Print Examiner. Latent Print Examiner Salary scale: Between $ 70‚000 and $
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Kate Kirby June 6‚ 2013 Title: Extraction of an Unknown Compound Purpose: The purpose of this experiment was to separate a mixture of two or more unknown compounds and identify them based on their melting point and reactivity with an acid or a base. Compound studied/Reactions: The organic solvent used in this experiment was methyl t-butyl ether (MTBE‚ 2-methoxy-2-methylpropane). The unknown that dissolved in the MTBE‚ but was insoluble in water. MBTE is very volatile and flammable. It was
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Extraction of Caffeine from Tea Leaves using Dichloromethane (CH2Cl2) Abstract The extraction of caffeine (C8H10N402) was done in two parts. The first procedure used was solid-liquid extraction which was done by boiling the tea leaves in 100 ml. distilled water for 5-10 minutes. The filtrate was acquired and was extracted again by liquid-liquid extraction using dichloromethane (CH2Cl2). The combined DCM (CH2Cl2) was washed and dried to yield crude caffeine. The crude caffeine was purified
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