Related Experiment Video
Updated: Jan 24, 2026

Rearing the Fruit Fly Drosophila melanogaster Under Axenic and Gnotobiotic Conditions
Published on: July 30, 2016
Yeasts Associated with Fruit Juice Concentrates
1Center for Food Safety and Quality Enhancement Department of Food Science and Technology, University of Georgia, Griffin, Georgia 30223-1797.
Abstract:
Populations and frequency of occurrence of yeasts in frozen apple, cherry, grape, orange, and pineapple juice concentrates were determined. Total yeast populations ranged from log10 < 1.00 to 5.41 CFU/ml of diluted (1:4) concentrate and increased to 2.42-7.34 CFU/ml after 24 h of incubation at 25°C. One hundred fifty-four isolates from 33 samples of fruit juice concentrates represented 21 species and 12 genera. The most frequently isolated species were Saccharomyces cerevisiae (24.7% of isolates), Candida stellata (22.1%), and Zygosaccharomyces rouxii (14.3%), followed by, in decreasing order of frequency, Torulaspora delbrueckii , Rhodotorula mucilaginosa , Issatchenkia orientalis , Hanseniaspora occidentalis , Lodderomyces elongisporus , Kluyveromyces thermotolerans , Hanseniaspora guilliermondii , Candida glabrata , and Pichia anomala , each representing 3-8% of isolates. Candida magnoliae , Candida maltosa , Candida parapsilosis , Candida tropicalis , Clavispora lusitaniae , Cryptococcus humicolus , C. laurentii , Pichia membranaefaciens , and Sporidiobolus salmonicolor were represented by single isolates. Populations in various samples consisted of 24-100% S. cerevisiae , 52-100% C. stellata , and 3-56% for Z. rouxii . S. cerevisiae and Z. rouxii were isolated, respectively, from five and four types of fruit concentrates investigated. This may be the first observation of this high frequency of C. stellata in juice concentrates.
Related Concept Videos
Fruit Development, Structure, and Function
Pancreatic Juice and Secretion
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
Yeast Signaling
Concentration Cells
Consider the following voltaic cell:
Solution Concentration and Dilution
Stress Concentrations
The stress...

