Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Silva, L. Juan
Committee Member
Matta, B. Frank
Committee Member
Schilling, W. Mark
Date of Degree
12-9-2006
Document Type
Graduate Thesis - Open Access
Major
Food Science, Nutrition and Health Promotion
Degree Name
Master of Science
College
College of Agriculture and Life Sciences
Department
Department of Food Science, Nutrition and Health Promotion
Abstract
The purpose of this study was to determine the quality and microbial load of blueberries at different maturity stages, to develop the effective microbial recovery method and to compare sanitation postharvest treatments on microbial counts of blueberries. The soluble solids and the sugar to acid ratio increased, while pH and TA decreased with maturity. Ripe berries had lower yeast and mold counts (YMC) at other maturity stages, but there were no differences on aerobic plate counts (APC). The medium pH was lower for stomaching and blending than hand massaged samples. This leads to higher recovery of microorganisms by massaging. Sodium hypochlorite at 400 ppm was effective in reducing APC but not YMC. Acidified sodium chloride was very effective, lowering APC and YMC below detectable level. All sanitation treatment did not influence sensory attributes of blueberries.
URI
https://hdl.handle.net/11668/15620
Recommended Citation
Chen, Wei-Chun, "Effectiveness of postharvest sanitation treatments on microbial load of blueberries" (2006). Theses and Dissertations. 1706.
https://scholarsjunction.msstate.edu/td/1706