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. Through various magnifications using 10x‚ 40x and 100x oil immersion lenses‚ the bacteria specimens‚ along with fresh and prepared yogurt‚ demonstrated full visual optical views of their shapes and how
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YOGURT INTRODUCTION There are thousands of microorganisms present at almost every surface. Some of them are pathogenic which causes diseases but most of them are useful especially in the food industry (Lasztity‚ n.d.). Microorganisms have been used for preparing food products such as cheese‚ bread‚ yogurt‚ etc‚ for a long period of time without even knowing that the process involves fermentation of the starting material (Pai‚ 2003). Fermentation is the process of utilizing nutrients anaerobically
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Yogurt Fermentation Yogurt is made by lactic acid fermentation. The main (starter) cultures in yogurt are Lactobacillus bulgaricus and Streptococcus thermophilus. The function of the starter cultures is to ferment lactose (milk sugar) to produce lactic acid. The increase in lactic acid decreases pH and causes the milk to clot‚ or form the soft gel that is characteristic of yogurt. The fermentation of lactose also produces the flavor compounds that are characteristic of yogurt. Lactobacillus
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fitness. These days‚ consumers are more inclined towards healthy options. With this said change in culture‚ frozen yogurt was able to adapt and provides consumers with a healthy alternative that can cater to various taste preferences. Yogurt is known to be sour in nature. Many companies have been able to maintain its flavor but at the same time were able to alter the generic taste of yogurt that satisfies various types of consumers. Since this topic is new in nature‚ the researchers decided to further
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Yogurt and Labneh Cheese Yogurt is made by adding cultures called lactic bacteria to fresh milk. The bacteria are added to heated and pasteurized milk and incubate to maximize the bacterial activity. The bacteria then covert the lactose to lactic acid‚ which thickens the milk and makes it tangy. Milks natural Ph is 6.5 but when it rises to 5.5 the capping casin that keeps the micelles separate in milk no longer repel and this results in loose clusters that that call curdles. At around 4.7 Ph the
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BACTERIA Period: 4 Characteristics: 3 major shapes Cocci Basilli Spirilla 3 major components Mesosomes flagella Plasmids Growing Up: Bacteria can obtain energy through phototrophs(sunlight)‚ lithotrophs(inorganic compounds)‚ and organotrophs(organic compounds) Marriage/Reproduction Binary Fission: The process by which all bacteria reproduce. It results in the separation of a single cell into two. Transformation: genetic alteration
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Bacterial Contamination April 15‚ 2013 Bacteria Contamination The definition of bacterial contamination is food contamination refers to foods that are spoiled or tainted because they either contain microorganisms‚ such as bacteria or parasites‚ or toxic substances that make them unfit for consumption This is very serious and people should take more precaution‚ food contamination is a serious because it results in foodborne diseases that each year affect an estimated seventy-six million
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Bacterial Smears Are Fixed before Staining to? Answer It is important to heat fix the bacterial smear before staining so as to‚ kill the bacteria‚ firmly adhere the smear on to the microscopic slide to prevent washing off during staining‚ and to allow the sample to readily take up the stain. Reference: www2.hendrix.edu What is the purpose of heat- fixing the smear? It helps the cells adhere to the slide so that they can be stained. The purpose of heat fixing is to kill the organisms without
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Yogurt is a valuable health food for both infant and elderly people. The nutritional constituents of yogurt are derived from the milk used in making it‚ those that are synthesized by the lactic acid bacteria and those that are added by the manufactures. The nutritional value of the milk protein is well-preserved during the fermentation process. Like most dairy products‚ it is a good source of protein. The milk proteins in yogurt are partially hydrolyzed and therefore become more digestible. In comparison
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Bacteria are the most numerous type of microorganism found in the rhizosphere of the soil. They produce secondary metabolites which are capable of producing antibiotic which eventually inhibit or kill bacteria. The rhizosphere region of the soil is a highly favorable habitat for the proliferation‚ activity and metabolism of numerous microorganisms. The magnitude of this area depends on the plant and the size of the roots that the plant possesses. Bacteria are among the microorganisms living in the
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