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Sugar in high concentrations acts osmotic. This means that the water available in the cells is drawn towards the high concentration of a solutant (sugar), like in the image below (this is demonstrated with a plant cell, but the principle is the same for bacteria and other microorganisms): Since microorganisms can not survive without water, they are not ...


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The Human Microbiome Project collected samples as shown in the image below from healthy volunteers: They give an estimate of about 8 Million genes in the human microbiome, which is about 360x the number of genes in the human genome. See here for their press release with a lot of information. Additionally these two articles are as well interesting, if you ...


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Yes. It is quite simple actually. Do this inside a clean laminar hood: Take a clean sterile scalpel blade or any other sterile long object. 1ml pipette tip would also do. Cut the agar on your plate. Scrape off cleanly. Put it in a sterile glass bottle. Heat in microwave Add kanamycin Pour back Another solution is to coat the agar surface with kanamycin ...


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From a study titled "Production of Penicillin by Fungi Growing on Food Products: Identification of a Complete Penicillin Gene Cluster in Penicillium griseofulvum and a Truncated Cluster in Penicillium verrucosum", moulds on food items were analyzed for fungi that could produce penicillin. The conclusion drawn was Among different fungal species belonging ...


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Thanks for the searching and quoting Ilmari. According to some theories, and perhaps there is some research on stool to support these, we can aid our intestines for producing beneficial bacteria by eating PREbiotic foods which supposedly help create a good environment in the intestines for producing healthy bacteria on its own. Some foods that are supposed ...


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Human Microbiome Project According to Published data on HMP website: The human microbiome consists of all the microorganisms that reside in or on the human body. They may cause illness but some are necessary for good health. There total count is 10 times more than Human cells. ~800 genomes had been sequenced. ~5000 Human sample had been used. Include 14 ...


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This is an interesting question and as often, it has been noted by someone before. In this case it has been a researcher named Claes Weibull, who did his research in the 1950s. He noted (as you did) that sucrose has a protective function on the generation of protoplasts from Bacillus megaterium) with lysozyme. He published the following figure (from the ...



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