1. Introduction Isodon is widely distributed and important genus of the family Lamiaceae. Various diterpenoids with diverse structures had shown antibacterial, antiinflammatory and antitumor activities.1 Isodon wightii (Bentham) H. Hara is a perennial herb commonly distributed in Western Ghats, South India up to 8000 feet. Ent-kaurene diterpenoid, melissoidesin isolated from the leaves showed antioxidant, antiacetylcholinesterase, cytotoxic and anticarcinogenic activities.2-3 In vitro mass multiplication protocol for this important species has also been developed.4 2. Materials and methods 2.1. General 1H (400MHz), 13C(100MHz) (Bruker-400) and 2D NMR (500MHz) spectra including 1H= H correlated spectroscopy (COSY), heteronuclear single quantum coherence (HSQC), heteronuclear multiple bond correlation (HMBC) were recorded in …show more content…
Linoleic acid peroxidation was initiated by the addition of 4 mM FeSO4.7H2O, incubated for 60 min at 37oC and terminated by the addition of 2 mL of ice cold trichloroacetic acid (10% v/v). An amount of 1 mL of thiobarbituric acid (1% w/v in 50 mM NaOH) was added to 1 mL of the reaction mixture, followed by heating at 95oC for 60 min. The reaction sample was read at 532 nm.7 The percentage of linoleic acid peroxidation inhibition activity was calculated using the following equation: % Inhibition = [(AB - AA)/AB] x 100, where AB, absorption of blank sample, AA, absorption of test sample. 2.5.4. Metal chelating activity Briefly, 2 mM FeCl2 was added to different concentrations of test sample and reaction was initiated by the addition of 5 mM ferrozine. The mixture was vigorously shaken and left to stand at room temperature for 10 min. Absorbance was measured at 562 nm after 10 min.8 % Inhibition = [(AB - AA)/AB] x 100, where AB, absorption of blank sample, AA, absorption of test sample. 2.6. Antibacterial
After lawn inoculating a Meuller Hinton plate and placing the samples of medication, the plate was then incubated for one week at 37 degrees Celsius. The first medication choice was Trimethoprim, this produced a zone of inhibition of 16mm, therefore being sensitive to the bacteria. Antibiotic number two was nalidixic acid, this too, has a zone of inhibition of 16mm but is considered intermediate. The next antibiotic was erythromycin which produced a zone of inhibition of zero and was therefore resistant. The last antibiotic that was chosen to be used in the experiment was ciprofloxacin.
Penicillin, is the first antibiotic that is medically used to fight off a large range of bacterial infection. For this experiment, we will be using ampicillin, it is a part of the penicillin drug group. The ampicillin inhibits the bacteria with the result of killing the bacterium or prevents it from multiplying. “When a bacterium multiplies, small holes open up in their cell walls as the daughter cells divide.
ABSTRACT To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. In this experiment we examined how increasing the volume of the extract added to the reaction would affect the rate of the reaction. The enzyme used was horseradish peroxidase which helps catalyze hydrogen peroxide. Using different pH levels, the absorbance rate of the reaction was measured to see at which condition the enzyme worked best. The rates of absorption were calculated using a spectrophotometer in 20 second intervals up to 120 seconds.
A world called Pluton, where there is gender discrimination and females are superior to the males. Growing the population is Pluton’s main purpose. Herein, having the ability to give birth is power, thus females are dominant creatures as they are created with a womb which is able to carry an infant for thirty-six weeks. The only ‘capability’ that men have is the ability of passing the sperm on to the female to bore a child. The superiority of the female is felt strongly at the workplace, home and community at large.
Everyone has a passion that they enjoy. But what if that passion you love and thrive was taken away? Anthony Luna, a sophomore at Manchester Regional High School, has faced having to give up his passion, but will try and overcome anything to get back to it. Anthony is passionate about many things, but the one thing he’s most passionate about is soccer. He started playing soccer in 6th grade, at only 12 years old.
Antibiotics are helpful for treating infections and infectious wounds. Unfortunately, there are certain bacteria that have developed their own defenses to
While he was there, he observed something strange in one of his petri dishes, where he was growing staphylococcus bacteria. A spore of mold had fallen into the dish, and the bacteria near the mold had been broken down (“Penicillin”). This mold’s
Good and bad bacteria exist in our environment, depending on which one enters the body the immune system these bacteria can either compromise or aid the immune system’s illness fighting capabilities. In class we learned that the skin aids in fighting infection by acting as a protective barrier. In addition, we discussed how normal flora is found on the skin and aids in the defense mechanism because it fights off potential threats by competing with them. The normal flora consists of microorganisms such as protozoa, fungi and bacteria.
Government System When you live life in our utopia, Illeonia, the power to speak your mind is in your hands. We do not want a strong bureaucracy that controls our place, we want you! We as democratic socialists believe our society and economy should be in the hands of the people, because without them, our society would fall into the wrong hands, thus leading to the destruction of our world. We think it’s beneficial for people who are affected by the choices we make to be in control, so we can live harmoniously and can avoid having bad blood .This will lead to the freedom and ecstasy that many human beings desire. So, come to Illeonia for the freedom and happiness you deserve!
Pure ASA crystals are isolated from the solution with a Hirsch Funnel that was used with a filter. The melting point of the pure ASA crystals were calculated in order to calculate of absorbance. Iron (III) salicylate dianion must contain the acidified solution Fe3+ in order to measure the absorbance values. The level of the impurity can
The Baryonyx was 10m long(32.8 feet) and was over 2 tons. Each claw was 6 inchs long and the long claw was 1ft long and was on the thumb. Baryonyx means heavy claw in greek. Baryonyx was discovered in 1983 by william walker. That was just some of the fact about the Baryonyx.
Scientists later found that the substance was sulfanilamide. It didn’t kill the bacteria, but it did stop them from multiplying, so the immune system could fight them off. After this discovery, scientists created other compounds that did the same thing to other kinds of bacteria. They became known a sulfa drugs. Third, there is the discovery of penicillin.
FCL10003 Winter Term 2014 Individual Oral Presentation Outline (2.5%) 1. Attention getter: • Good morning to everyone. • Does anyone know what penicillin is? I bet everyone know it and some even use it before. But, let me ask you, do you know who discovered penicillin?
Titan was discovered in 1655 by Dutch astronomer, Christiaan Huygens. It is named after the race of gods that used to rule the universe, before being overthrown by the Olympian Gods. It is Saturn’s biggest moon, and the second biggest moon in our solar system. Scientist speculate that Titan’s development imitates Earth’s early years in development, with the only difference being that Titan is farther away from the sun. Titan is the only moon that has an atmosphere in our solar system.
Abstract The unknown concentration of benzoic acid used when titrated with standardized 0.1031M NaOH and the solubility was calculated at two different temperatures (20◦C and 30◦C). With the aid of the Van’t Hoff equation, the enthalpy of solution of benzoic acid at those temperatures was determined as 10.82 KJ. This compares well with the value of 10.27KJ found in the literature.