NIH Public Access Author Manuscript Phytomedicine. Author manuscript; available in PMC 2013 December 15. Published in final edited form as: Phytomedicine. 2012 December 15; 20(1): 17–23. doi:10.1016/j.phymed.2012.09.017. The Chinese Pueraria root extract (Pueraria lobota) ameliorates impaired glucose and lipid metabolism in obese mice $watermark-text Jeevan K. Prasaina‚ Ning Pengb‚ Rajani Rajbhandaria‚ and J. Michael Wyssb‚* aDepartment of Pharmacology and Toxicology‚ University of Alabama
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found to be in the extract obtained using ethanol as the solvent. As shown in Figure 4.5‚ it could be clearly analyzed that different colour values are obtained on extraction with different solvents. Ethanol gave the maximum colour value i.e. 308.6; chloroform gave a slightly less value of 296.6; followed by methanolic extract giving 249.3
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Objective: To extract caffeine from tea powder using polar - nonpolar solvent extraction technique. Theory: The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea leaves
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On July 15‚ 2008‚ Cindy Anthony called the police saying her daughter Casey Anthony stole her car and some money. Later that same day the police received another call from the same person saying that her granddaughter Caylee Anthony had been gone for over a month. When this was heard‚ they knew they had a big case on their hands. The mother Casey Anthony was taken into custody and told many lies concerning the whereabouts of her daughter. The police began to investigate and found some interesting
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Homework 1_Key BCH2333 Winter 2015 Topics covered: review‚ Chemical Evolution‚ Water‚ Non-covalent bonds‚ Acid/base‚ pH 1. i) Convert using scientific notation to liters: 4 nanoliters‚ 4 x 10-9 L‚ 20 microliters‚ 2x10-5 L‚ 35 milliliters‚ 3.5 x 10-2 L‚ 10 deciliters‚ 1 L‚ 7 kiloliters 7 x 103 L ii) Convert using scientific notation to grams: 6 mg‚ 6 x 10-3 g‚ 21 µg‚ 2.1 x 10-5 g‚ 503 ng‚ 5.03 x 10-7 g‚ 10 kg‚ 1 x 104 g 2. Which of the following properties of water explains its ability to dissolve
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17-Mar 2008 | | Computer in Anthony home used to google chloroform‚ possibly stemming from a joke posted by Casey’s then boyfriend‚ Ricardo Morales‚ with caption: “Win her over with chloroform.” | 19-Mar 2008 | | Casey Anthony receives a birthday check from her 80-year-old grandmother and uses the routing number to steal money from the account. | 21-Mar 2008 | | Computer in Anthony home used to conduct second web search regarding chloroform. Totals: "84 hits‚ a little over 3 minutes in total
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Experiment 1: Isolation of Casein from Milk * pH of milk – 6.6 * milk = 87.1% water‚ 4.9 % CHO 3.9 %‚ fats‚ 0.7% minerals Experiment 2: Protein Hydrolysis and Characterization | Reagents | Principle | Test for | Positive Result | Negative Result | Biuret | CuSO4‚ NaOH | Complexation of Cu+2 with amide N atoms | Polypeptide bonds | Violet/purple solution | Blue color solution | Sakaguchi | 10% NaOH‚ 0.02% α-naphtol solution‚ 2% NaOBr | arginine condenses with α-naphtol and NaOH
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Anesthetic ether is the actually diethyl ether CH3CH2OCH2CH3. It has been used as an anesthetic in medical surgery for over 150 years‚ though the hypnotic effects of ether was already discovered 500 years ago. The historical development of ether anesthesia is very dramatic and interesting. Ether anesthesia: The historical development Ether was discovered in 1275 by Spanish chemist Raymundus Lullius‚ and was named ¡§sweet vitriol." In 1540‚ a German scientist Valerius Cordus described the synthesis
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Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH | 17.0 | 3.90 | 118.1 | 3.07 | Benzene | C6H6 | 5.5 | 4.90 | 80.2 | 2.53 | Chloroform | CHCl3 | –63.5 | 4.68 | 61.2 | 3.63 | Ethanol | C2H5OH | –114.7 | 1.99 | 78.4 | 1.22 | Phenol | C6H5OH | 43.0 | 7.40 | 181.0 | 3.56 | Use the previous formula and the constant from Table 1 to calculate the temperature at which a solution of
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Ridge National Laboratory. Vass told the jury that testing of air samples‚ carpet‚ scrapings from the wheel well and a spare tire cover from the car found a handful of compounds associated with human decomposition. Vass also said testing showed chloroform present at a "shockingly high" level on a carpet sample from the trunk. Defense experts‚ including an FBI lab technician‚ disagreed and said they found low amounts of the substance‚ which is also present in many household cleaning
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