how are perservitives used

BHA and BHT - Chemistry of BHA and BHT Food Preservatives
In addition to preserving foods, BHA and BHT are also used to preserve fats and . same chemical properties which make BHA and BHT excellent preservatives .
http://chemistry.about.com/od/foodcookingchemistry/a/bha-bht-preservatives.htm

Flu FAQ: What are preservatives and why are they used in vaccines?
In vaccines, preservatives are used to prevent the growth of bacteria and fungi in the event that they get into the vaccine...
http://answers.flu.gov/questions/4167

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Natural Food Preservatives - Best Natural Preservatives For Food
The use of natural preservatives has been known to inhibit the growth of bacteria, thereby preventing the spoilage of food. Even though chemical preservatives .
http://lifestyle.iloveindia.com/lounge/natural-food-preservatives-4842.html

Food Additives And Preservatives
Food Additives And Preservatives. Preservatives: Preservative food additives can be used alone or in conjunction with other methods of food preservation.
http://www.allfoodbusiness.com/food_additives_preservatives.php

Additives and Preservatives - calcium, effects, food, nutrition, body ...
Mar 30, 2011 . Additives and preservatives have been used in foods for centuries. When meats are smoked to preserve them, compounds such as butylated .
http://www.faqs.org/nutrition/A-Ap/Additives-and-Preservatives.html

Wood Preservatives - Low Toxicity
Same benefits of conventional wood preservatives, with fewer health concerns . Chromated Copper Arsenate (CCA), the most commonly used preservative, .
http://www.toolbase.org/Technology-Inventory/Decks-Patios-Fences/low-toxicity-wood-preservative

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Chromated Copper Arsenate (CCA) | Pesticides | US EPA
CCA is used in pressure treated wood to protect wood from rotting due to insects and microbial agents. EPA has . Wood Preservatives (New Active Ingredients) .
http://www.epa.gov/oppad001/reregistration/cca/

How are Juices Bottled Without Using Preservatives?
Some people believe that preservatives are harmful, or that the treatment processes used to create a juice with a long shelf life are bad for the juice. It is certainly .
http://www.wisegeek.com/how-are-juices-bottled-without-using-preservatives.htm

Preservatives to keep foods longer – and safer (EUFIC)
To ensure that preservatives really do help make foodstuffs safer, their use is subject to pre-market safety assessment and authorisation procedure.
http://www.eufic.org/article/en/artid/preservatives-food-longer-safer/

Exterior Water Repellent Preservatives and Sealers | DoItYourself.com
Water-repellent preservatives may be used as a natural finish for wood surfaces. They contain a wood preservative, a small amount of wax as a water repellent, .
http://www.doityourself.com/stry/waterrepel