Home Dehydrated Food Shelf Life

Home Dehydrated Food Shelf Life by Ken Jorgustin – Modern Survival Blog

4 Factors That Affect Home Dehydrated Food Shelf Life



Nesco Food Dehydrator

Temperature affects shelf life

Storage temperature has a significant affect on shelf-life. The cooler the better!

For every reduction in storage temperature of 10-degrees-C (18 F) the expected shelf life will double! That is pretty significant.

A storage environment of 54 F instead of 72 F will double a 1 yr shelf life expectancy to 2 yrs. This might be the difference between storing your food upstairs (where it’s usually warmer) or downstairs in the basement (assuming you have a basement). So keep that in mind…

A storage temperature of 90 F instead of 72 F will halve the expected shelf life.

For more information, the following article describes this in more detail:

Temperature Versus Food Storage Shelf Life

Moisture affects shelf life

The process of dehydrating removes most of the moisture from foods while retaining much of the nutritional value and flavor. It is a great method to preserve your harvested fruits and vegetables for later consumption off-season.

Fruits will typically contain about 75 percent moisture when fresh, and should be dehydrated to an approximate 20 percent moisture level, the point at which they become leathery and pliable. Apparently it is okay for fruits to be dried to this ‘pliable’ level rather than a lower ‘brittle’ moisture level because the natural sugars and acids in fruit act as an added preservative.

Vegetables should be dehydrated to a moisture level of at least 10 percent (lower is better), or to the point at which they become crisp and brittle, and will break or snap if bent.

Oxygen affects shelf life

Oxygen will interact with, and break down fats and proteins resulting in poor flavor and eventual spoilage. Fruits and vegetables only have small amounts of fat and protein but will still oxidize over a period of time when stored in an environment containing oxygen. This may be a particular concern if you are storing your dehydrated foods for “long term” (years).

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Ken Jorgustin

Ken Jorgustin’s survival blog focuses on a wide variety of preparedness topics varying from short to long term actions and solutions for wide-ranging scenarios of preparation… for daily life, disaster, or even SHTF collapse. Subjects include situational and risk awareness, the dangers, systemic risks, and avoidance of dependence upon the major ‘modern’ systems that we take for granted, topics of self-reliance and self-sufficiency, and practical solutions to live a way of life while surviving these uncertain times. Modern Survival is Preparedness For Life Preparedness is a process and will become a way of life – one in which you have more control over your own destiny. Being better prepared will help liberate you from “the system” which in many ways is designed to hold you down and keep you “dependent”. Modern Survival Blog has been committed since JAN-2010 to produce a wide variety of information to hopefully provide you with ideas for your own preparedness.