Irradiation

topic posted Sat, April 26, 2008 - 12:11 PM by  Sentience
Just wanting to open a discussion on the irradiation of food. Most of the food we buy in the supermarkets, especially when it comes from other countries is exposed to radiation that alters the food on a molecular level and makes it close to sterile. In some instances it may prevent disease, but it also may affect nutritional quality. It can be difficult to avoid irradiated food if you buy your food from super markets. Farmers markets are a good place t find non irradiated foods. Almost all fruits and vegetables in the super markets are irradiated.

www.sciencedirect.com/science

Effect of γ-irradiation on the molecular properties of ovalbumin and ovomucoid and protection by ascorbic acid

Sunae Moon and Kyung Bin SongCorresponding Author Contact Information, E-mail The Corresponding Author

Department of Food Science and Technology, College of Agriculture, Chungnam National University, Taejon, 305-764, South Korea

Abstract

To elucidate the effect of gamma-irradiation on the molecular properties of ovalbumin and ovomucoid, the secondary and tertiary structure and molecular weights of the proteins were examined after irradiation at various doses. Gamma-irradiation of protein solutions caused the disruption of the ordered structure of protein molecules. Circular dichroism showed that increase of radiation decreased the ordered structure of proteins. Fluorescence spectroscopy indicated that irradiation quenched the emission intensity excited at 280 nm. SDS-PAGE indicated that radiation caused initial fragmentation of polypeptide chains and, as a result, subsequent aggregation. Ascorbic acid protected against the aggregation and degradation of proteins by scavenging oxygen radicals produced by irradiation and the effect of irradiation on protein conformation was more significant at lower concentrations of proteins.





posted by:
Sentience
California
  • Re: Irradiation

    Sat, April 26, 2008 - 1:38 PM
    I think it's kind of interesting in respect to how people throughout history have fought so hard to survive, and yet we've made up all these things to make it nearly impossible for us to do so. Irradiation, smoking, fast food, pollution…most of the population is actively working to make living healthy next to impossible, and yet are still so bent on 'survival'.
    • Re: Irradiation

      Sat, April 26, 2008 - 1:52 PM
      Irradiation of food prevents acute illness by killing potential pathogens. However, it decreases the nutritional value of our food. However, with the slow accumulation of toxins and nutritional deficiencies, there are no lawsuits. With acute illness, the stores and producers can be held liable....so they choose the economically safe route. Its cheaper than testing each crop for bacteria.

      Unfortunately, if most of your food comes from a grocery store, your not really eating raw food.
      • .
        .
        offline 37

        Re: Irradiation

        Sat, April 26, 2008 - 2:10 PM
        <<Unfortunately, if most of your food comes from a grocery store, your not really eating raw food. >>

        I'm beginning to think that from the raw veganism perspective.. we have already exceeded the human raw vegan carrying capacity of earth.

        Or maybe I am lacking creative thinking or vision.
        • Re: Irradiation

          Sat, April 26, 2008 - 2:14 PM
          A great many food sources are not edible raw, especially protein sources like beans, but also sources of carbs like potatoes. If nobody ate anything other than raw vegan foods, then we would not have enough food to everyone.

          A raw diet, or at least a diet high in raw foods vs cooked or processed has a lot of health benefits. Eliminating cooked starches can affect your health in positive ways. It is unreasonable to expect the earths entire population to switch to a raw diet though. A raw diet limits the number of food options available, and requires a global economy that uses oil to transport foods from outside regions. Many regions populations cannot subsist on the local raw vegetation. Tropical regions could accomplish this more easily than other regions.

          Veganism however is more space efficient than meat eating. Global vegetarianism, or at least moving in that direction seems practical to me. Grain fed meat offers a poor energy exchange rate. For every calorie of meat, it costs 3 to 40 calories of grain.

          I suppose hydroponics could make raw foods more available though. Distribution could pose a challenge.
  • Re: Irradiation

    Sat, April 26, 2008 - 9:10 PM
    Wow, even organic produce from Whole Foods?
    I thought it was just coconuts.
    Are you really telling me that the organic apples I buy at whole foods, from the USA are irradiated?
    • Re: Irradiation

      Sat, April 26, 2008 - 11:29 PM
      well, actually, i think the master plan is to turn some of us into aggressive, survivalist meatheads, and the rest into complacent, helpless sheep. Both are easy to control under martial law; shoot the aggressive ones, and herd the sheep. Clueless, desperate people seek salvation in any form that satisfies their base urges. McDonald's works for most of them.

      I don't know about the apples, Ezekiel.
      It would be a very sad truth if even the produce we buy organically at so-called conscious markets was subject to the same denaturing as the shit in mainstream supermarkets. I don't have the facts on this, but as far as i know, the gub'ment is pushing for sterilization of all potential food-borne "pathogens" such as live enzymes.

      I am starting my first garden this year. It's a trial run while i still have the alternative of getting fresh produce at the farmer's market. My intention is to go deeper into growing my own food each year, while buying my nuts directly from small farms that promise 100% raw and unadulterated produce.

      It's important to try and not react with fear to all the Big Brother oppression that appears to be mounting. I hear people talking all day about the gas prices, the food prices, Walmart is rationing rice because of the "Food Shortage", etc. Although there may be some truth at the heart of these matters, it's the hype and fear-mongering that allow these issues to control our reality. There may come a day when i can't purchase organic, pure, unfumigated pineapples anymore, unless i go to the place where they are grown and pick them myself. So hopefully by the time that day comes, i will have an apple tree in my yard and i'll just eat apples. We have become so spoiled with the availability of exotic produce that we depend upon it. Part of growing my own food is deepening my gratitude for the foods that will grow naturally in my own climate. I began my dietary refinement back in 1988 as a macrobiotic vegan, and the principle of eating locally grown food was the one that i resonated with the most. The part about not eating tomatoes never worked for me though, even though i'm a type A blood and am supposed to avoid nightshades.

      I think that the first produce item under attack is the leafy greens. Fortunately, these are easy to grow in most climates, at least half the year. Here in the Pacific NW we can grown kale year-round.
      • Re: Irradiation

        Sat, April 26, 2008 - 11:39 PM
        "I don't know about the apples, Ezekiel.
        It would be a very sad truth if even the produce we buy organically at so-called conscious markets was subject to the same denaturing as the shit in mainstream supermarkets. I don't have the facts on this, but as far as i know, the gub'ment is pushing for sterilization of all potential food-borne "pathogens" such as live enzymes. "

        Do most of your shopping at a good farmers market. You will cut down on pollution (cutting out the need for distribution), saving money (whole foods is needlessly expensive, and I am sure everyone here hates the yuppies), and you can ask the guy who is selling the produce any question regarding processing (9/10 times it wont be irradiated)


        PS You will also be giving more money to the farmer then any wholesaler would give him/her
        • Re: Irradiation

          Sun, April 27, 2008 - 11:19 AM
          Organically grown foods are still irradiated if they come from outside the US (Organic from Mexico or anything that comes from the tropics like Bananas). Often this is also the case even if they come from out of state, but most especially if they come from outside the country.

          So I am making a case for people attempting to be raw foodists to buy locally produced foods that come from small farmers.....Its not the grocery stores that irradiate, its the mega-corporations that do it to get the food through customs. Unfortunately that means its nearly impossible to get a totally raw banana or mango in this country.


          Purchasing locally produced produce should be the ideal for raw foodists for the following reasons.

          Its fresher and has more vitality.
          It isnt wasting oil to have it shipped here from around the world. (Earth friendly)
          You are supporting small farmers instead of mega-corporations (Even "dole organic")
          Its the only way to get food that is actually 100% raw.


          So its not about fear, its about taking action. Locally produced foods are not likely to be irradiated, especially if they come from small farms, so if your local whole foods is buying locally produced organic, then it should be fine....but if they are importing supposedly organic foods from banana republics or asia, then its probably irradiated.....It might not be possible to live up to this standard 100% all of the time, but I would encourage people to at least make an effort to seek out local produce.
          • Re: Irradiation

            Tue, April 29, 2008 - 11:34 PM
            sounds like all of y'all would be as happy as I was to stumble across this li'l video:

            youtube.com/watch

            It inspired me to find & join a local organic CSA (Community Sustained Agriculture) ~~ that ought to tie me over until I learn enough about organic gardening to grow my own food.

            Go to localharvest.org to see if there's an organic CSA near you ~ even if you don't need them, it would be nice to be able to tell other people about the option. Get the word out to the sheep... baaah ;~)
            • Re: Irradiation

              Tue, April 29, 2008 - 11:44 PM
              Excellent video. I just bookmarked it.
              • Re:IRRADIATION!!!

                Thu, May 1, 2008 - 6:08 PM
                this is reallly depressing me right now..
                i live in the mountains (9000 feet) small community, no farmers markets..

                i had no idea about irradiation.
                • Re:IRRADIATION!!!

                  Thu, May 1, 2008 - 6:14 PM
                  Well, its hard to say how much of your food is irradiated, but its pretty safe to assume that most of it is not in its raw fresh state. If its not irradiated, it is often synthetically ripened.

                  The only way to know for sure is to grow it yourself.
                  • This is the maximum depth. Additional responses will not be threaded.

                    Re:IRRADIATION!!!

                    Thu, May 1, 2008 - 9:40 PM
                    I can imagine it's kinda hard to grow your own food at 9K feet except maybe for the 3 or 4 warmest months of the year.

                    But don't get too depressed, Kristen. I heartily believe food nourishes us best when we eat it with an attitude of gratitude. Do the best you can do. Maybe doing your personal best means eating as healthily as you can with what's available at the store, or maybe it means finding a farmer's market or CSA as an alternative to potentially irradiated food, or maybe it means supplementing that w/ a seasonal home garden. Just remember whatever you do, the mental/emotional/spiritual state in which you do it matters as much if not more than the actions themselves.
                    • Re:IRRADIATION!!!

                      Thu, May 1, 2008 - 9:43 PM
                      Dry beans and seeds are not usually irradiated (I think), so if you stock up on alfalfa and mung beans and sprout them yourself, you can make some yummy salads.
                      • Re:IRRADIATION!!!

                        Fri, May 2, 2008 - 8:21 AM
                        its quite difficult living here and being raw..without all the options as city/sea level people have..
                        i am staying positive though and doing the best i can, we do have an organic section at the market here..its very small but adequate..at least i believed it was..
                        i am just not understanding this-- all organics at the stores are irradiated? how do i know which ones are?

Recent topics in "Raw Vegans"

Topic Author Replies Last Post
3rd party candidate miki moO 3 May 14, 2008
addicted to cooked grains ~ help! 6 May 13, 2008
Avocado seeds Sentience 7 May 13, 2008
raw athletes? Unsubscribed 10 May 12, 2008