We have all heard that whole grains are more nutritious than refined grains. But there is much more to the story than that. It is true that the process of refining grains causes nutrient loss. But the nutrients present in whole grains are not available unless they are first liberated. This is also true of many nutrients stored in seeds, nuts, legumes and flour.
All grains, flour, legumes and nuts are actually the seed of a plant or tree. These seeds need to store nutrients for the growing plant after germination of the seed. But it is just as critical that seeds do not release these nutrients prior to germination. For this reason they contain enzyme inhibitors, which keep the nutrients “locked up” until germination.
When a seed germinates (gets wet and starts to sprout), these enzyme inhibitors are neutralized. This “liberates” many “locked up” vitamins, minerals and proteins which will be needed by the growing sprout. This process occurs well before a visible sprout emerges from the seed.
For humans to obtain the full nutritional value of whole grains, flour, legumes, nuts and seeds, it is essential to neutralize these enzyme inhibitors prior to cooking or eating them. This can be accomplished simply by the process of soaking. The vitamin, mineral and protein content can increase eight to ten-fold after germination.
Soaking is not only important for liberating nutrients, it is also important to prevent the inhibition of our own digestive enzymes. The enzyme inhibitors in these unsoaked foodstuffs also inhibit the digestive enzymes we need to digest all our foods. In other words, eating ungerminated grains and seeds in any form can actually lower the nutritional value obtained from all the other food we eat.
All ancient civilizations, without formal knowledge of nutritional biochemistry, developed methods for germinating and fermenting grains, fl our, legumes, seeds and nuts prior to cooking and eating. Asian miso and tempeh are examples of this. Injira and dosas served this purpose in India. In the western world the soaked gruels and porridges from oats and other grains were the staple. Sourdough flour is another classic example.
Have you ever wondered why cows have four stomachs and we have only one? The raw vegetable matter which cows eat requires many specialized enzymes, friendly bacteria and a lot of time to digest properly. Without four stomachs and a long digestive tract this would not be possible. Humans, on the other hand, needed to safely digest animal products. If this is not done rather quickly, putrefaction takes place. That is why we have only one stomach and a relatively shorter digestive tract than herbivores. The trade off is that omnivores like ourselves do not have all the digestive enzymes and bacteria necessary to handle large quantities of raw or ungerminated vegetable matter, including whole grains, fl our, legumes, seeds and nuts.
Enzyme inhibitors are not the only “antinutrient” in ungerminated grains. The bran of whole grains and legumes contain phytic acid or phytate. Phytates inhibit our ability to absorb many minerals including calcium, magnesium, iron, copper and zinc. It is important for individuals who supplement their diets with raw bran to be aware of the potential mineral depletion it can cause.
The additional step of soaking grains, flour and legumes with a spoonful of an acid (vinegar, lemon juice, yogurt, buttermilk, whey) activates an enzyme called phytase which neutralizes the harmful phytates. Of all grains, oats contain the highest levels of phytates and therefore are very important to soak.
Some foods currently thought to be nutritious, such as whole grain box cereals, rice cakes, puffed grains, soy milk and granola are actually all made from ungerminated grains, seeds, nuts and legumes processed at high temperatures. Many of the nutrients they do contain will remain “locked up”. They will also have intact antinutrients such as enzyme inhibitors and phytates which will render the entire meal less nutritious. They will also have intact antinutrients such as enzyme inhibitors and phytates which will render the entire meal less nutritious.
Are you ready to become a kitchen germinator? Simply place your whole grains, flour, seeds, legumes and nuts in a glass container in a warm location. Soak them in enough warm water to keep them immersed even after they expand, or, in the case of flour, enough to make a thick batter. It is also best to perform one or two cycles of draining, rinsing and re-soaking with fresh water during the process. Again, when working with flour, this step will be unnecessary. Seven hours is the minimum amount of time required for soaking, but 12- 24 hours is optimal. An exception to this is cashews, which should be soaked for no more than six hours.
Remember that grains, flour and legumes are best soaked with a little acid, such as vinegar, lemon juice, yogurt, buttermilk or whey. It is recommended that nuts be soaked with a bit of sea salt. All of these foods require a thorough rinse before using. When soaked, these foods will require less cooking time than usual.
Although it takes a little extra effort to transform yourself from a nutrient terminator into a kitchen germinator, you will reap the benefits when you taste. Grains become lighter and fluffier. Flour recipes develop a nice tangy “bite”. Legumes are richer and creamier. To learn more about the nutritional benefits of soaking and germinating foods in your own kitchen, consult Sally Fallon’s book, “Nourishing Traditions”.