has been a study that the mothanolic extract of the plant has anti microbial properties. The extract from Pansit- pansitan (Peperomia pellucida)‚ the compound showed significant antibacterial activity against 3 Gram- negatice bacteria (E coli‚ Staphylococcus aureus‚ S thyphi.) The researchers expect that the hand soap‚ using Pansit- pansitan extract as an active ingredient‚ will be more efficient and less expensive than the commercial hand soaps. Statement of the Problem 1. Can Pansit- pansitan
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completed in order to identify this unknown sample. First‚ the plate was analyzed for its hemolysis characteristics. Afterwards‚ a Gram stain was performed from a sample of the agar plate and the slide was viewed under the microscope. Once‚ the microscopic visual was captured‚ a catalase test followed. Next‚ for further data‚ MSA results were recorded‚ along with antibiotic observations of demo plates. Lastly‚ with the information gathered‚ it was identified that the unknown sample was Streptococcus salivarius
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primary focus of this lab was on microscopy and simple stains. Crystal violet and Carbol fuchsine‚ simple staining components‚ were used to stain the slide in order to see the different microbes in order to determine their cellular shape and identify unknown ones by comparing. Introduction Bacterial cells are usually colorless because cytoplasm‚ for the most part‚ is transparent. Since the bacteria are colorless‚ it is almost essential to add a stain to make the bacteria more visible. Once stained
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flavus‚ yeast species such as Candida lipolytica‚ Mucor plumbeus and Staphylococcus aureus. Its combination along with clove oil has been impressive and effective against A. flavus. The cinnamon oil has antimicrobial action in the range 10-150 μg ml − 1. Another intriguing fact about cinnamon is its role in altering or changing the expression of a gene icaA which plays a role in the formation of biofilms. Staphylococcus epidermidis is one of the causes of biofilms which is why it has emerged as a notorious
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In the experiment involving varying pH levels‚ E. faecalis‚ S. epidermidis‚ L. lactis‚ and L. casei were subjected to different pH levels and then were allowed to incubate in order to determine the minimum‚ maximum‚ and optimum pH levels for growth of specific bacterial species. It was found that lower pH levels between 2 and 4 inhibited or promoted little to no growth for E. faecalis‚ S. epidermidis‚ and L. casei. It is evident that these bacteria were resistant to alkaline environments‚ however
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very useful in knowing its risk of toxicity to humans or animals‚ its resistance or susceptibility to antibiotics‚ and determining how to control its growth or kill it altogether. The purpose of these procedures is to discovery the identity of an unknown microbe by observing its reactions to a barrage of chemical and physical tests. Different microorganisms react in different ways‚ due to their function‚ digestibility‚ morphology‚ chemical make-up and other details. By observing the responses to these
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media types such as chemical defined‚ complex‚ selective‚ and differential media. Experimental Methods In this lab‚ we use the procedure from Chemically Defined‚ Complex‚ Selective‚ and Differential Media. We divide the agar plates that have the unknown in third‚ write our initials‚ and date on the bottom of the agar plate. We also divide the agar plates into quadrants‚ label each organism in their quadrant‚ write our initials‚ and date on the bottom of the agar plates. We flame the loop and let
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Bibliography: © The McGraw−Hill Companies‚ 2002 E X E RC I S E © The McGraw−Hill Companies‚ 2002 Gram Positive 38. General Unknown © The McGraw−Hill Companies‚ 2002
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Compare normal microflora of the upper respiratory tract with normal microflora of the lower respiratory tract. Normal microflora of the upper respiratory tract: The nares (nostrils) are always heavily colonized‚ predominantly with Staphylococcus epidermidis and corynebacteria withStaphylococcus aureus‚ this being the main carrier site of this important pathogen. The healthy sinuses‚ in contrast are sterile. The pharynx (throat) is normally colonized by streptococci and various Gram-negative
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generate a pure culture of a specific organism. Set Up: For this experiment I needed: 1 Distilled water‚ 1 Paper towels‚ 1 10%-bleach or 70% alcohol solution‚ 1 Zip bag‚ 1 Pan to heat agar‚ 1 Isopropyl alcohol (rubbing alcohol)‚ 1 Cultures: S. epidermidis and L. acidophilus‚ 1 Gloves‚ Disposable‚ 1 Pencil‚ marking‚ 11 Petri dish‚ 60 mm‚ 2 Candles (flame source)‚ 1 Thermometer-in-cardboard-tube‚6 Test Tube(6)‚ 16 x 125 mm in Bubble Bag‚ 1 Test tube holder‚ 1 Test-tube-rack-6x21-mm‚ 1 Pipet Graduated
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