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United States Department of Agriculture

Agricultural Research Service

Research Project: Testing Biomarker-Based Tools for Scald Risk Assessment During Storage

Location: Physiology and Pathology of Tree Fruits Research

Project Number: 2094-43000-006-26
Project Type: Trust

Start Date: Mar 28, 2011
End Date: Mar 27, 2014

Objective:
1. Determine if scald risk assessment tools indicate when delayed CA imposition leads to high scald risk and high scald incidence. 2. Indicate if and when scald risk is high during CA storage based on risk assessment tools and determine if storage conditions can be changed to alter biomarker levels and scald incidence. 3. Assess effectiveness of scald-risk assessment tools in pilot scale and commercial CA storages

Approach:
Our previous work screening hundreds of natural chemicals in apple peel during scald development has revealed those with potential for use as biomarker-based scald risk assessment tools. Further validation is needed to reveal whether tools will aid in commercial storage and supply chain management decisions by monitoring whether CA storage conditions or crop protectant usage is sufficient to prevent superficial scald. We initially developed and validated this technology by measuring peel chemistry changes related to storage stress during the scald development period of fruit stored in both air and CA. We propose continuing this work by testing additional CA conditions in a laboratory setting as well as in pilot or commercial settings. Proposed objectives complement or extend objectives outlined in our existing WTFRC project as well as our recently awarded federal Specialty Crops Research Initiative (SCRI) project to continue to develop biomarker-based storage management tools for superficial scald and other key postharvest disorders

Last Modified: 11/27/2014
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