What preparation method best preserves the cancer-fighting glucosinolates?
Answer
Consuming raw, perhaps with lemon juice
To effectively harness the cancer-fighting potential locked within the glucosinolates, the method of preparation is critically important because these compounds are sensitive to heat. Prolonged exposure to high temperatures, such as boiling, will significantly strip away these sulfurous benefits. The method that preserves these delicate compounds most effectively is consuming the watercress raw. If lemon juice is added, it can actually aid in the conversion process, helping the myrosinase enzyme act upon the glucosinolates to produce beneficial isothiocyanates even in the raw state.
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