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Living things are always advancing towards a trajectory of death. We spring up, mature and then we die. Foods will eventually decay but there are ways to reduce their deterioration, allowing longer shelf life. Foods deteriorate due to two reasons, (1) food safety problems and (2) food quality problems. Food safety problems involve issues of food contamination with […]

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Gram staining is a method developed by the Danish Scientist Hans Christian Gram in 1884 to distinguish two types of bacteria based on the structure of their cell wall. Gram-positive bacteria stain purple because of its thick peptidoglycan layer in the cell wall. Gram-negative bacteria will stain pink due to having a very thin peptidoglycan […]

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