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The Effect of Temperature and Air Exposure on the Ascorbic Acid Content of Orange Juice

http://www.selah.k12.wa.us/soar/sciproj2002/AnnieM.html

The Effect of Temperature and Air Exposure on the Ascorbic Acid Content of Orange Juice
Researched by Annie M.
2001-02





Vitamin C foods
The best sources of vitamin C in most commonly stored foods are broccoli, orange juice or enriched powdered juice mixes, mandarin oranges, mangoes, green chiles, green peppers, peas, pineapple, potatoes, raspberries, strawberries and tomatoes.
Vitamin C is easily destroyed by heat, light and air. When cooking stored foods containing vitamin C, avoid long exposure to heat. It is best to add these foods toward the end of the cooking time. Retain vitamin content in storage by purchasing food in opaque containers with the oxygen removed and store them in a cool, dark place, which not only preserves vitamin C and other nutrients but also extends shelf life of foods.

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