推 ebi:罐頭類的開罐後 如果沒吃完還是挖出來放在密封保鮮盒再放冰箱 09/06 14:50
推 ebi:較好，罐頭開封後金屬材質容易氧化變質。不新鮮的罐頭很毒 09/06 14:51
Shelf Life of Pet Food
Katharine Hillestad, DVM
Drs. Foster & Smith Veterinary Services Department
In selecting a high-quality food for your pet, remember that proper handling
and storage is necessary to maintain optimum taste and nutritional value.
How long can I expect the pet food I buy to last?
First of all, before you buy a bag or can of pet food, check for a 'best if
used by' date on the container. Higher-quality foods will have this, and the
format should be easy to read. Most dry foods have a shelf life of one year,
while canned products are usually good for two years from the date of
manufacture. Make sure that the pet food you are buying is within its
recommended use date.
Do the types of preservatives used make a difference?
Keep in mind that the type of preservative used may affect the shelf life.
Natural preservatives (such as vitamin E) tend to break down more quickly than
artificial preservatives (such as ethoxyquin, BHT, and BHA). Do not be
surprised if the shelf life of products using natural preservatives is several
months shorter than those using artificial preservatives. You may need to
compensate for this by buying pet food in smaller packages or on a more
frequent basis.
How should pet food be stored?
Remember that the major sources of damage to pet food are oxygen, heat,
humidity, and light. Exposure to oxygen and heat leads to oxidation of the fat
in foods. Oxidation is a chemical process that makes food taste rancid,
depletes vitamins and other nutrients, and can eventually lead to serious
disease. Proper storage should limit the exposure of the food to these
environmental factors.
Store foods at proper temperatures. Room temperature is ideal for both canned
and dry foods, but neither should be stored above 90°F. Storing canned food at
temperatures below 50°F for long periods of time may lead to some changes in
appearance, texture, and palatability, but should not alter the nutritional
value. Once canned food is opened, it should be covered with a tight-fitting
lid, refrigerated, and used within 3 days.
Avoid storing dry food in damp basements, bathrooms or laundry rooms, since
moisture encourages the growth of mold. If possible, keep dry food in its
original bag and place inside another clean, dry, container with a snug lid to
keep out light, air, rodents, and insects.
Reference:
http://www.peteducation.com/article.cfm?cls=1&cat=1399&articleid=2804
簡單的翻譯一下
一般乾飼料的存放期限約為一年，存放適溫為32℃以下。
一般罐頭食品存放期限約為兩年，存放適溫為10℃以下。
且開罐後，最好用保鮮膜封蓋放入冷藏，並最好在三天內使用完畢。
主要保存時要避免陽光照射，潮溼，曝露在空氣中，蟲害。
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