BENEFITS OF FREEZE-DRYING OR DEHYDRATING
The strategies used to radically decrease the moisture content material of the meals reviewed right here have the next benefits over baking or extruding the meals at excessive temperatures:
*These strategies protect the meals (almost stopping the organic exercise that causes a meals to decay) with much less injury to the elements’ pure enzymes or nutritional vitamins than cooking temperatures trigger.
*This implies the meats and different elements are, by strict definition, uncooked. For individuals who consider in the advantages of uncooked diets, that is big. (We’ll focus on those that think about uncooked meals to be harmful in a minute.)
*When rehydrated, these meals are extremely palatable to most canines. It could be as a result of focus of taste in freeze-dried meals elements or their minimal processing. Canine with poor appetites (like very senior or chronically ailing canines) could settle for these meals when nothing else appeals.
*As a generalization, the makers of those merchandise are focusing on the highest finish of the market and have a unprecedented dedication to sourcing top-quality elements
DIFFERENCES BETWEEN FREEZE-DRYING AND OTHER DRYING METHODS
Freeze-dryers expose meals to low temperatures, freezing them comparatively shortly, after which to excessive air stress. When the stress contained in the freeze-drying chamber is excessive sufficient, small heating items are turned on, heating the trays that the meals sits on, and inflicting the frozen water (a stable at that time) within the meals to remodel right into a fuel (water vapor). Pumps pull the vapor out of the chamber whereas retaining the inner air stress excessive.
Like freeze-drying, air-drying could be completed at low temperatures, but it surely takes longer and leaves meats and fat weak to oxidation (spoilage); most meals are dried with temperatures of 140ºF to 180ºF. At these temperatures, the meals is definitely frivolously cooked; the mobile construction (and thus the aroma and style) of meats, fruits, and greens really modifications and the style and look. In distinction, correct freeze-drying doesn’t have an effect on the looks or style of meals as a lot.
The freeze-drying course of sounds excessive, however the course of really leaves most meals much less broken than dehydration, which toughens meats and different elements.
The Meals Security Modernization Act (FSMA) of 2011 comprises zero-tolerance insurance policies for pet meals that check optimistic for pathogenic micro organism. For that reason, a number of the producers of freeze-dried uncooked meals topic their merchandise to a “kill step” often known as high-pressure processing (often known as high-pressure pasteurization, and in both case abbreviated as HPP); they don’t wish to threat elevated surveillance or remembers from meals management officers.
The house owners of another firms, nonetheless, consider so strongly in the advantages of uncooked meals that they refuse to make use of a kill step. As an alternative, they depend on the standard of their elements and their very own meals “hazard evaluation and significant management factors”(HACCP) plans to stop promoting contaminated merchandise. They perceive that the FSMA insurance policies are current to guard canines and their house owners, and that as we speak’s human meals provide does typically comprise pathogens – however additionally they have noticed that almost all wholesome canines can simply digest and profit from uncooked meals – even uncooked meals that will comprise some pathogens. (Few wholesome canines have bother with Salmonella, for instance, although Listeria and e. Coli are one other story.) And, importantly, they have interaction and educate their customers about these info.
There are food-industry consultants who really feel strongly that HPP is a really protected expertise, and others who fear that it might alter meals on a molecular stage. We really feel fantastic about HPP; we’ve been to HPP vegetation and noticed the uncooked pet food earlier than, throughout, and after therapy and believe that it isn’t harmed or made unsafe to feed. However, we respect the appropriate of householders to feed uncooked meals that haven’t undergone a kill step – so long as they’re knowledgeable in regards to the dangers to which they’re subjecting themselves and their canines.
A few of the firms make the most of a “check and maintain” program whereby completed merchandise are examined for pathogens and never launched on the market till outcomes point out the merchandise are uncontaminated. Shopping for a product from firms that make use of a test-and-hold program is an effective approach to ameliorate fears a couple of uncooked and unpasteurized weight-reduction plan.
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