Did you know that over 71% of grapes produced in the US are processed to make wine? Also, that the production of wine leads to about 20 to 25% of the total processed grapes being pomace? Read more about Ongoing Research: Grape Pomace
What is a spoilage microbe?
When it comes to wine microbes, a lot of times we think about splitting them into two categories: “good” and “bad.” In the simplest terms, we think of Saccharomyces cerevisiae as the “good” yeast and we think of Oenococcus oeni as the “good” bacteria, and pretty much everything else is considered “bad.”
What makes a microbe bad? Read more about Defining Spoilage
Now that we are heading into the growing season, grape sampling for picking decisions is right around the corner. Be sure to check out the Grape Sampling fact sheet (and the rest of the Grape Maturity Series) available through ISU Extension. Read more about Stratified sampling for better insight into grape ripening
Dr. Aude Watrelot
In the previous newsletter (February 2021) I explained the process of thermovinification and the impact of this process on wine quality. This month, I am going to introduce you to a type of thermovinification, flash détente or flash release. Read more about Heating Treatments- Part II
Please note that the fee-for-service lab will be closed the week of March 15-19. Samples received during that time will be processed beginning March 22. Sláinte!
For any questions, please reach out to Maureen Moroney at 515-294-3176.
By Somchai Rice, Ph.D.
This article is part one of a series where we deep dive into wine aroma. We will start with a primer on volatile aroma compounds in wine. Future articles will discuss the volatile organic compounds (VOCs) found in most wines, VOC mixtures' effects, VOCs' impact that contributes to the wine aroma, and touch on the characteristic aroma of some varieties. Let us jump in. Read more about Evaluating wine quality using wine aroma
Dr. Aude Watrelot Read more about Focusing on Research Winemaking
Joe Hannan- Commercial Horticulture Field Specialist Read more about Personal Weather Station for Specialty Crop Management
