Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
Effect Of Chitosan And Water Soluble Chitosan Coatings On Quality Of Small Fruits, Jason Ki-Myung Noh
Effect Of Chitosan And Water Soluble Chitosan Coatings On Quality Of Small Fruits, Jason Ki-Myung Noh
Masters Theses
Edible coating has been applied on the surface of fresh produce to extend shelf-life by suppressing respiration, transpiration, and microbial growth. The coatings, thus, can help decrease moisture and weight loss, and may offer a protective barrier against bacterial contamination and spoilage. Recent studies have indicated chitosan as an effective coating that extends shelf-life and improves a storability of fruits. The objective of this study was to demonstrate the effectiveness of natural biodegradable chitosan coatings in extending shelf-life and quality of fresh small fruits, such as blueberries and grapes. Fruits were dipped for 30 seconds in 1% chitosan in 1% …
A Sanitation Assessment Of Food Contact Surfaces In Child Care Centers Using Microbiological Analysis And Rapid Sanitation Assays, Catherine Moore Cosby
A Sanitation Assessment Of Food Contact Surfaces In Child Care Centers Using Microbiological Analysis And Rapid Sanitation Assays, Catherine Moore Cosby
Masters Theses
Food contact surfaces are a major concern for food service facilities in controlling the spread of foodborne pathogens. Food service areas within these facilities are considered critical to health, and therefore the microbiological quality of these surfaces within child care center food service areas must be surveyed and assessed. The main objectives of this study were: (1) to gather information as to the environmental microbiological quality of food service surfaces and a non-food contact surface in child care centers, and (2) to evaluate several rapid sanitation assays for determining the sanitation quality of food contact surfaces and to determine if …
Significance Of Cell Surface Charge On Microbial Susceptibility To Chitosan, Laquita Mai Michael
Significance Of Cell Surface Charge On Microbial Susceptibility To Chitosan, Laquita Mai Michael
Masters Theses
A study was conducted to determine the importance of cellular surface charge on susceptibility of yeasts to the natural biopolymer chitosan. The test organisms utilized were Saccharomyces cerevisiae, Candida krusei, and Zygosaccharomyces bailii. Surface charge was determined at various culture ages and under selected environmental conditions. Bovine serum albumin (BSA) was used as a protein standard to ensure an accurate method to measure microbial surface charge. Yeasts cells were grown to the early stationary phase, washed and suspended in potassium chloride with absorbance value (A600nm) of 0.1 to 0.2, and charge was measured using a …