When
myrosinase enzymes convert glucosinolates found in cruciferous vegetables into thiocyanates (including isothiocyanates), some of the thiocyanates formed have the ability to bind together with free iodine found in the body.
Freshly harvested cruciferous vegetables eaten in raw form will typically have a significant percentage of their glucosinolates converted into isothiocyanates by still active
myrosinase enzymes and these isothiocyanates will become available in the upper digestive tract (small intestine) for absorption into the bloodstream.
Freshly harvested cruciferous vegetables not consumed in raw form, but chopped and allowed to sit for several minutes prior to cooking will typically have some of their glucosinolates converted into isothiocyanates by still active
myrosinase enzymes, and these isothiocyanates will also be available for absorption in the upper digestive tract.
All plants in the cruciferous vegetable family that contain glucosinolates also contain
myrosinase enzymes.
The chart below shows five very well - studied glucosinolates, the best cruciferous vegetables for obtaining them, and some key isothiocyanates that form after the glucosinolates have been acted upon by
myrosinase enzymes:
The seeds also contain
myrosinase enzymes that can break apart the glucosinolates into other phytonutrients called isothiocyanates.
Check out this video, I think you'll find the answer here: https://nutritionfacts.org/video/second-strategy-to-cooking-broccoli/ The video is summarized here: Adding
myrosinase enzymes in the form of even a pinch of mustard powder to cooked cruciferous (cabbage - family) vegetables like kale, collards or Brussels sprouts can offer anti-cancer sulforaphane levels comparable to raw, removing the necessity to pre-chop for maximum health benefits.
This process will allow
myrosinase enzymes to go to work prior to their deactivation by cooking heats.
When you cook cabbage, you kill the special
myrosinase enzyme that makes the cabbage so healing, thus making cabbage less effective as anti cancer food.
For every specific glucosinolate, there are corresponding anti-cancer compounds produced following action of
the myrosinase enzyme.
Not exact matches
The extreme heat destroys the
enzyme myrosinase, which is necessary to form sulforaphane, the powerful cancer - preventive compound in broccoli, she said.
Sulforaphane is formed when fresh broccoli is chopped or chewed, bringing its precursor glucoraphanin and the
enzyme myrosinase into contact with each other.
The heat deactivates the
enzyme myrosinase needed for sulforaphane production.
Sulforaphane is created when the
enzyme myrosinase transforms the glucosinolate glucoraphanin into sulforaphane.
Naturally occurring sulforaphane in cruciferous vegetables is formed from glucosinolates, which are produced with the help of an
enzyme called
myrosinase.
Note: In the absence of the
enzyme myrosinase, glucosinolates can not be hydrolyzed into isothiocyanates.
When raw cruciferous vegetables are chopped or chewed, an
enzyme called
myrosinase comes into contact with glucoraphanin and produces sulforaphane.
With the help of the
enzyme myrosinase, each unique glucosinolate can be converted into a unique isothiocyanate.
The
myrosinase is the
enzyme I'm talking about.
When cruciferous vegetables are consumed in cooked form, and especially if they have not been allowed to sit chopped for several minutes prior to cooking, there is unlikely to be much
enzyme activity (including
myrosinase activity), and the digestive products of the cruciferous vegetables are more likely to pass through the upper digestive tract unabsorbed and continue down into the lower digestive tract (colon).
In a study that compared steaming versus microwaving of raw cabbage, researchers found that it took 7 minutes of steaming to result in the same about of
enzyme (
myrosinase) destruction that occurred with only 2 minutes of microwaving.
(4, 5]-RRB- When kale is damaged via chopping or chewing, the
enzyme myrosinase helps release isothiocyanates by interacting with glucosinolates.
However, it needs an
enzyme called
myrosinase to make this critical conversion.
Mustard contains the
enzyme myrosinase.