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United States Department of Agriculture

Agricultural Research Service

Research Project: IMPROVING FRUIT AND FRUIT PRODUCTS QUALITY IN THE PACIFIC NORTHWEST

Location: Horticultural Crops Research

2010 Annual Report


1a.Objectives (from AD-416)
Identify and evaluate vineyard practices within the Pacific Northwest that produce high quality fruit and fruit products.


1b.Approach (from AD-416)
Both parties will examine vine characteristics and major chemical components responsible for any differences, or similarities, between differing vineyard practices. We will use simple spectrophotometric methods in addition to more complex analytical methods (HPLC), to better understand qualitative and quantitative effects on grape phytonutrients. Formerly 5358-21000-034-33S (12/2008).


3.Progress Report

Radiant Zone Drying (RZD) is an innovative dehydration process with the potential to be a more cost-effective alternative to conventional drying methods (spray drying, freeze drying, refractive window drying, drum drying, etc). Six procedures were tested to understand their influence on cranberry powder quality after RZD. The formulations consisted of either of two cranberry starting materials (puree or concentrate), different drying aids, pH adjustments, etc. The resulting RZD powders were analyzed for moisture, color, individual and total anthocyanin, and total phenolics. RZD products retained a high proportion of phenolic concentration and color judged against their starting material.

Methods of ADODR monitoring included e-mail, meetings, and phone calls.


Last Modified: 4/18/2014
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