In addition, several case - control studies have shown that specific forms of the gene that encodes glutathione S - transferase, which is the enzyme that metabolizes and helps eliminate
isothiocyanates from the body, may influence the association between cruciferous vegetable intake and human lung and colorectal cancer risk (21 - 23).
If you're worried about the effects of
isothiocyanates from collard greens, cook them before you eat them.
However, given the desirability of
isothiocyanates from a cancer - preventing perspective, plus the unlikelihood of unwanted thyroid impacts from consumption of fresh cruciferous vegetables in everyday serving sizes, the cooking of cruciferous vegetables for the sole and exclusive purpose of lowering isothiocyanate content does not seem backed by sound research.
Not exact matches
Cauliflower and cabbage are in the cruciferous vegetable family which is known for it's high levels of vitamin C and compounds called
isothiocyanates, which prevent cancer cells
from growing.
For example, wasabi's heat comes
from isothiocyanates, powerful antioxidants that may be useful as antibacterial agents, and for treating or preventing blood clotting and asthma, as well as stomach, breast, and prostate cancer.
According to Fuhrman, the most beneficial compounds we get
from these foods though are the
isothiocyanates (ITCs).
The chart below shows the best studied of the glucosinolates found in Brussels sprouts and the detox - activating substances (called
isothiocyanates) made
from them.
Of particular interest here has been the
isothiocyanate (ITC) sulforaphane, which is made
from glucoraphanin (a glucosinolate) found in Brussels sprouts.
The
isothiocyanates (ITCs) made
from cabbage's glucosinolates act to protect us against cancer through a variety of different mechanisms.
Total
isothiocyanate yield
from raw cruciferous vegetables commonly consumed in the United States.
One of which,
isothiocyanates, is derived
from breakdown of glucosinolates.
I'm eating cruciferous veggies primarily for the
isothiocyanates (the prime goitrogenic suspects), absorption of which is higher
from raw crucifers.
Cooking these greens reduces the bioavailability of
isothiocyanates by destroying the enzyme needed to produce them
from other substances in collard greens, according to an article published in «Pharmacological Research» in March 2007.
The
Isothiocyanates made
from glucosinolates in kale play a primary role in kale's ability to lower the risk of many cancers, as well as indole -3-carbinol, which boosts DNA repair in cells and may block the growth of cancer cells.
It's a benzopyrrole, and it is only formed when
isothiocyanates made
from glucobrassicin are further broken down into non-sulfur containing compounds.
There's no way I could do justice to the complex mixture of phytochemicals in those plants, but various glucosinolates (really, their
isothiocyanate products) and quercetin
from kale; the anthocyanins
from blueberries; mangiferin
from mangos; and gallic acid, ellagic acid, quercetin, kaempferol
from amla all induce the «adaptive stress response» as described above.
Researchers have determined that
isothiocyanates (ITCs)
from cruciferous vegetables can activate a wide variety of enzymes that are essential in Phase II detox, including heme oxygenase, aldoreductase, glutamate cysteine ligase, and quinone reductase.
When glucosinolates
from cruciferous vegetables reach the lower intestine (colon) intact, colonic bacteria often proceed to convert the glucosinolates into other compounds, including
isothiocyanates.
Isothiocyanates (ITCs) formed
from glucosinolates are known to help prevent cancer by several different mechanisms.
Isothiocyanates (ITCs) made
from glucosinolates in kale play a primary role in achieving these risk - lowering benefits.»
The most powerful
isothiocyanate tumor stifling ingredient recently isolated
from broccoli is known as sulforaphane.