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United States Department of Agriculture

Agricultural Research Service

Research Project: Investigate effect of nutritional sprays on healthy and HLB-diseased orange fruit and resulting juice quality

Location: Citrus and Other Subtropical Products Research

Project Number: 6034-41430-005-27-R
Project Type: Reimbursable Cooperative Agreement

Start Date: May 1, 2013
End Date: Apr 30, 2015

Investigate whether nutritional sprays, used by growers to mitigate huanglongbing (HLB) disease symptoms on the tree, also mitigate the off-flavor symptoms in the fruit and resulting juice.

Conduct two harvests each of healthy and huanglongbing (HLB)-affected 'Hamlin' and 'Valencia' juice orange varieties harvested from trees sprayed with nutritionals versus trees grown under a conventional program (no nutritional sprays), extract and pasteurize juice under commercial conditions, then submit for the chemical and sensory analyses. Sensory tests will include difference from control and trained panel while chemical analyses will include quantification of sugars, acids, aroma volatiles, liminoids and flavonoids.

Last Modified: 10/19/2017
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