We now know that phytic acid in un-soaked whole grains contributes to mineral deficiencies.3 Other components in foods, such as
the oxalic acid found in raw spinach and chard, can also rob our children of calcium.4 I make a point of always cooking these foods and offering them in small amounts.
Oxalic acid found in dark hard bitter leafy greens.
A small amount can make people sick (from
the oxalic acid found in the leaves).
But when
oxalic acid finds itself in the presence of calcium, it has the ability to links to it too, forming a particular insoluble salt crystal - calcium oxalate.
Not exact matches
This of course made me do some research, and I
found out that spinach contains
oxalic acid, which forms little crystals on your teeth.
I decided to research this a little and
found out that the chalky feeling is due to
oxalic acid.
Phytic
acid and
oxalic acid,
found naturally in some plants, bind to calcium and can inhibit its absorption.
Soaking and spouting have been
found to lower
oxalic acid as well as phytates.
A diet high in carbohydrates,
oxalic acid in foods like raw spinach and phytic
acid found in whole grains can cause deficiencies.
Yasmina Ykelenstam: And, you know,
oxalic acid, you know,
found in kale.
«Calcium is
found in green leafy vegetables in reasonable quantity (Table 2)[20]; however, a high proportion of the calcium is made insoluble by the presence of fibres, phytic
acid and
oxalic acid, which reduce the bioavailability of calcium.
So, seeing that you quantified everything, I was hoping to
find out whether the sample diet outlined could effectively replace spinach / kale type foods (b / c of the
oxalic acid concerns.)
Eating a high protein diet or too many foods that contain
oxalic acid (
found in spinach and chard), or phytic
acid (
found in seeds and grains) can affect the absorption of magnesium too.
Most people will say that
oxalic acid interferes with the absorption of iron but a Swiss study regarding iron absorption from bread served with spinach / kale
found that the impact was insignificant.
Blueberries are among a small number of foods that contain measurable amounts of
oxalic acid, a naturally - occurring substances
found in plants, animals, and human beings.
One of these compounds,
oxalic acid, is
found in a wide range of foods, including many fruits.
A distinctive property of
oxalic acid that makes it so dangerous is that once it has linked with calcium, it is practically insoluble (will not dissolve) at the acidities normally
found within the body.
For 24 weeks, they were fed a nutritionally complete dry dog food supplemented with different combinations of dietary calcium and oxalate (in the form of
oxalic acid) commonly
found in dry commercially - prepared dog foods.