General fitness, health and nutrition · Public discussion

Microwaving Zaps Nutrients

Started by John 'the Man' · · Last activity · 3 posts · 462 views

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General fitness, health and nutrition
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17 October 2003
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John 'the Man'
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  1. microwaving zaps nutrients
    http://www.nlm.nih.gov/medlineplus/news/fullstory_14319.html
    "United Press International

    Friday, October 17, 2003

    MURCIA, Spain, Oct 17, 2003 (United Press International via COMTEX) --
    Microwaving raw broccoli drastically all but eliminates some natural
    health-promoting chemicals, a study reported in the Globe and Mail
    said Friday.

    Of particular note in the research was the post-microwaving
    disappearance of 97 percent of flavonoids -- substances often found in
    many brightly colored fruits and vegetables that are linked to a
    reduced risk of coronary heart disease, stroke and lung cancer.

    However, the study being released in the Journal of the Science of
    Food and Agriculture -- conducted by a group of Spanish government
    scientists in Murcia, Spain -- found boiling removed only 66 percent
    of flavonoids from fresh raw broccoli, and pressure cooking leached
    out only 47 percent."

    SOURCE:
    F Vallejo, FA Tomás-Barberán, C García-Viguera.
    Phenolic compound contents in edible parts of broccoli inflorescences
    after domestic cooking
    http://www3.interscience.wiley.com/cgi-bin/abstract/106558884/ABSTRACT
    Journal of the Science of Food and Agriculture
    Volume 83, Issue 14, 2003. Pages 1511-1516

    ------------------------
    This Article Concluded:

    "Of particular note in the research was the post-microwaving
    disappearance of 97 percent of flavonoids -- substances often found in
    many brightly colored fruits and vegetables that are linked to a
    reduced risk of coronary heart disease, stroke and lung cancer.

    However, the study being released in the Journal of the Science of
    Food and Agriculture -- conducted by a group of Spanish government
    scientists in Murcia, Spain -- found boiling removed only 66 percent
    of flavonoids from fresh raw broccoli, and pressure cooking leached
    out only 47 percent.

    Microwaving reduced other similarly desirable chemicals in broccoli by
    anywhere from 74 to 87 percent.

    By far the most healthful results were obtained by the staple of
    French cooking -- a simple and quick steaming."

    ------------------------
    Comment:

    I find this news rather alarming to say the least. It appears that
    the healthiest way to cook broccoli is by steaming.
    --
    John Gohde,
    Achieving good Health is an Art, NOT a Science!

    Health-with-Attitude is a support group for people
    trying to follow a Healthy Lifestyle.
    http://groups.yahoo.com/group/Health-with-Attitude/

  2. John 'the Man' <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:

    microwaving zaps nutrients

    scientists in Murcia, Spain -- found boiling removed only 66 percent
    of flavonoids from fresh raw broccoli, and pressure cooking leached
    out only 47 percent.

    Microwaving reduced other similarly desirable chemicals in broccoli by
    anywhere from 74 to 87 percent.

    By far the most healthful results were obtained by the staple of
    French cooking -- a simple and quick steaming."

    ------------------------
    Comment:

    I find this news rather alarming to say the least. It appears that
    the healthiest way to cook broccoli is by steaming.

    Maybe not. If they only measured the content in the broccoli, the
    implicationis the rest of the flavinoids were in the water it was
    cooked with. Without seeing the original paper, one cannot tell. So
    the conclusion might equally be that microwaving releases MORE
    nutrients from food, and perhaps makes it more bioavailable-- if one
    consumes the liquid it was cooked with..

  3. Once upon a time, our fellow RK
    rambled on about "Re: Microwaving Zaps Nutrients."
    Our champion De-Medicalizing in sci.med.nutrition retorts, thusly ...

    Quoted message said:
    Quoted message said:

    scientists in Murcia, Spain -- found boiling removed only 66 percent
    of flavonoids from fresh raw broccoli, and pressure cooking leached
    out only 47 percent.

    Microwaving reduced other similarly desirable chemicals in broccoli by
    anywhere from 74 to 87 percent.

    By far the most healthful results were obtained by the staple of
    French cooking -- a simple and quick steaming."

    ------------------------
    Comment:

    I find this news rather alarming to say the least. It appears that
    the healthiest way to cook broccoli is by steaming.

    Maybe not. If they only measured the content in the broccoli, the
    implicationis the rest of the flavinoids were in the water it was
    cooked with. Without seeing the original paper, one cannot tell. So
    the conclusion might equally be that microwaving releases MORE
    nutrients from food, and perhaps makes it more bioavailable-- if one
    consumes the liquid it was cooked with..

    I have reviewed other research and only found abstracts supporting the
    use of microwave cooking: 11349895, 2775405, 3894486 & 7047080.

    I suspect the cooking method used. If you don't know what you are
    doing, microwave cooking can really kill the taste of the food cooked.
    Perhaps they over cooked on high heat with a dry method of cooking?

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