View previous table 7. Results suggested that peach DF concentrate may be not only an excellent DF source but an ingredient in the food industry. ODF and OEO samples stored in vacuum packaging showed the lowest aerobic and lactic acid bacteria counts. The sensory evaluation scores were similar for samples with ODF and OEO, and stored either in air or vacuum packaging.
Bacteria and Fresh Yogurt Slide Microbiology: Bacteria and Fresh Yogurt Slide Bacterial Morphology Demonica Britt Microbiology DL1 March 23, Abstract This lab was performed to identify and familiarize with a microscope while precisely observing various bacterial shapes and their arrangements in different types of specimens of bacteria.
The microscope parts and capabilities were clearly identified and used successfully and the bacteria were clearly illustrated showing the bacterial shapes and arrangements with all the appropriate magnification being utilized.
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The main purpose was to observe the shapes and arrangements of microbial bacteria and yogurt. Procedure The lab involved self-provided and labpaq materials to perform several exercises to obtain the purpose of the lab. The lab began with the proper identification of all components of the microscope and their functions.
This allowed for preparation of the objective of being able to view specimens at various magnification levels and recognizing their different shapes and how they are arranged contingent upon those identified within the lab itself and the microbiology textbook.
Several different slides were observed under 10x and 40x lens magnification: This allowed vivid illustrations of the specimens notating their shapes and how they are arranged.
The bacteria were observed through the eyepiece at the appropriate focus, resolution, and contrast for maximum visibility. The next part of the lab exercise was observance under an x oil immersion lens for more prepared slides: Bacteria Coccus form, Bacteria spirillum, and Bacteria Bacillus form while still maintaining to observe the shapes and arrangements.
Additionally, the fresh yogurt slide that was sitting for 24 hours in a dark, warm location was obtained for the next part of the lab experiment.
The fresh yogurt slide was prepared by using a toothpick to place a small amount onto a fresh, clean slide with a slide cover placed on top. This was observed for comparison to the prepared yogurt slide included in the lab for any variations in forms.
Upon completion of performing the lab, the prepared slides were safely put away, fresh slide washed carefully, fresh yogurt specimen safely discarded, and the microscope cleaned and returned to be stored with the protective cover. Under the lowest magnification the object is relatively smaller and not as easy to see the full format.
Whereas the higher the magnification, the bigger and more enhanced the view of the bacteria becomes making the shapes and arrangements relatively obvious. It appeared to become clearer the bigger the object projected to my eye. It became life size in a sense where as it was an image that could be clearly defined, described and duplicated if necessary.
The fresh yogurt slide that was set for 24 hours was a more enhanced feature for observing bacteria in yogurt.
Its view was very detailed and its shape more recognizable. While the prepared yogurt slide was a more faint view and the color appearing duller. It was visible to me that bacteria in yogurt was more spherical in shape, cocci. What are the advantages of using bleach as a disinfectant?
Bleach is a common household disinfectant that kills It can be used to sanitize. It can be a disadvantage as it can be inactivated by presence of an organic matter and it has a strong odor and it has a short life in the liquid form that can be sensitive to heat and sunlight.
Some disadvantages are that they are hazardous which contain compounds that are not safe and toxic to human form. List three reasons why you might choose to stain a particular slide rather than view it as a wet mount.
Define the following terms: What is the difference between direct and indirect staining? What is heat fixing? Why is it necessary to ensure that your specimens are completely air dried prior to heat fixing?
Describe what you observed in your plaque smear wet mount, direct stained slide, and indirectly stained slide.Observing Bacteria and Blood Cynthia Alonzo, M - Microbiology Lab Chap 1 introduction. Yes there was an observable difference in the two slides.
The fresh yogurt slide had active moving bacteria and the prepared slide just had bacteria that were stationary. () Microbiology: A Laboratory Manual of Small-Scale . The fresh yogurt slide that was set for 24 hours was a more enhanced feature for observing bacteria in yogurt.
Its view was very detailed and its shape more recognizable. While the prepared yogurt slide was a more faint view and the color appearing duller. Let me introduce myself.
My name is Mark Sisson. I’m 63 years young. I live and work in Malibu, California. In a past life I was a professional marathoner and triathlete. Bacterial Morphology Demonica Britt Microbiology DL1 March 23, Abstract This lab was performed to identify and familiarize with a microscope while precisely observing various bacterial shapes and their arrangements in different types of specimens of bacteria.
Silage is made by one or more of the following methods: placing cut green vegetation in a silo or pit; piling the vegetation in a large heap and compressing it down so as to purge as much oxygen as possible, then covering it with a plastic sheet; or by wrapping large round bales tightly in plastic film.
Medical Microbiology Microscopic slides and media Microscopic slides Oral microbiology – Bacteria causing inflammations and abscesses within the oral cavity; acid-fast bacteria (genus Mycobacterium), Gram-.