Saturday, November 6, 2010

EFA(Essential Fatty Acids)


Essential Fatty Acids are two specific fats, linoleic and alpha linolenic fatty acids, essential to body functions in very small amounts. They are required in small amounts in food since the body cannot make them. For people consuming less than 10 to 15 gms of fat per day, I recommend that the small amount of fat consumed contain a daily source of essential fatty acids by one of several alternative regimens as follows:
(a) one teaspoon (4.7 gms fat) of soybean oil or four soya lecithin capsules each containing 1.2 gms of oil, either of which provides 2.4 gms of linoleic and 0.38 gms of alpha-linolenic acid, the minimum essential fatty acids requirements.
(b) one teaspoon (4.7 gms fat) of walnut oil providing 2.4 gms of linoleic and 0.25 gms of alpha linolenic acid in addition to a fish meal once per week or a fish oil capsule once per day or an extra teaspoon of walnut oil to increase to the alpha-linoleic acid intake.
(c) one teaspoon (4.7 gms fat) of canola oil containing 1.22 of linoleic acid and 0.47 gms of alpha-linolenic acid in addition to the small amounts of linoleic acid in vegetables since vegetable oils are rich in linoleic acid, or two teaspoons of canola oil.
Excess amounts of all these oils raise LDL with potential adverse cardiovascular risk. Olive oil contains very little essential fatty acid and is less harmful than saturated fats. However, excess olive oil adds calories to the diet and is not specifically beneficial in excess.
Following a healthy diet is actually much easier than in the past due to better knowledge and the increased availability of healthy low-fat foods. One of the keys to changing dietary habits is to keep an open mind and be willing to try new products. Stock your kitchen with healthy foods and replace some of the unhealthy foods with healthy substitutes. Remember, even though some foods are low in fat, they all have calories. So too much attention to low fat but not total calories can keep you from losing the weight too.

What is Solar Pasteurization?

 sunshine is an abundant source of energy that can not only cook food but can also heat water to temperatures that kill harmful microbes, making water safe to drink. This procedure is called solar water pasteurization.
It has been known since the late 1880s, when Louis Pasteur conducted groundbreaking research on bacteria, that heat can kill pathogenic (disease-causing) microbes. Most people know contaminated water can be made safe by boiling. What is not well known is that contaminated water can be pasteurized at temperatures well below boiling, as can milk, which is commonly pasteurized at 71°C (160°F) for 15 seconds.Other disease causing organisms called virus and parasites are also carried in water and milk.
         Pasteurisation means heating the milk or water hot enough and keeping it for long time to kill the germs,virus and parasites,which are all harmful for health.If the heat of the sun is used to do this it is called as solar pasteurisation.
             Solar pasteurisation disinfects the drinking water but does not removes the contaminants without additional filtration or treatment.
       PROS AND CONS
    It doesnt depend on fuel,electricity or expensive equipment.Solar pasteurisation is one of the the least expensive way to make sure milk and water ,you and your family drink is safe.
   As the treatment doesnt remove disease causing organisms,this is not advisable for children and old ones.