expiration dates on food packaging provided by barbara brown, ph.d., r.d./l.d., food specialist...
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![Page 1: Expiration Dates on Food Packaging Provided by Barbara Brown, Ph.D., R.D./L.D., Food Specialist Oklahoma Cooperative Extension Service, Associate Professor,](https://reader034.vdocuments.site/reader034/viewer/2022051819/5518b76d550346881f8b51de/html5/thumbnails/1.jpg)
Expiration Dates onFood Packaging
Provided by Barbara Brown, Ph.D., R.D./L.D.,
Food Specialist Oklahoma Cooperative Extension Service,
Associate Professor, Department of Nutritional Sciences
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Today you will learn:
• How to use open dating
• How to interpret the date on egg cartons
• What you can learn from closed dating (coded)
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Think about it…
• Sally found a carton of eggs in her refrigerator with a date that has already passed. Eggs are expensive these days and she decides to use them anyway.
• What would you do?
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Is dating required by federal law?
• In general, no• Required for
infant formula & some baby food
• If use calendar date:• Must give month,
day, & year (on shelf-stable & frozen products)
• Immediately next to date must be phrase explaining meaning of date ("sell-by" or "use before”)
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Dating formula & baby food
• Dating is for quality & nutrient retention
• Federal regulations require "use-by" date on infant formula & baby food under FDA inspection
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Dating formula & baby food
• If eaten date on container, formula or food must contain at least the quantity of each nutrient as described on label
• Formula must be able to pass through an ordinary bottle nipple
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Dating formula & baby food
• “Use-by" date chosen by manufacturer, packer or distributor based on product analysis throughout its shelf life; tests; or other information• Also based on conditions of
handling, storage, preparation & use printed on label
• Do not buy or use baby formula or baby food after its "use-by" date
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Who does requirefood product dating?
• U.S. has is no uniform system
• Over 20 states require dating of some foods• In some areas of
much of food supply has some type date, in other areas almost, no food is dated
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2 types of dates
• "Open Dating“: uses a calendar date• Date stamped on package to help
store determine how long to display product for sale
• Helps buyer know time limit to purchase or use product at its best quality
• Is not a safety date• “Closed Dating”: uses a code on food
product 2009
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What Types of Food Are Dated?
• Open dating found primarily on perishable foods such as meat, poultry, eggs, dairy products, cereal, baked goods
• "Closed" or "coded“ used on some shelf-stable products• Cans & boxes
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Open Dating• Date easy to identify & interpret• Date beyond which quality may
fall below normal level
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Types of open dating• "Sell-By" date: tells
store how long to display product for sale• Buy product before
date expires• Food still good for a
period of time at home if properly stored & handled
• Freezing makes date useless
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Types of open dating
• "Best if Used By (or Before)" date: recommended for best flavor or quality• Not a purchase or
safety date• After date has
passed there may be noticeably drop in quality
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Types of open dating
• "Use-By" date: last date recommended for use of product while at peak quality• Date determined by
manufacturer
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What about eggs?
• Manufacturers not required to put expiration or sell-by date on egg cartons
• Cartons must show when eggs were packed
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Example
• Carton stamped “P 1692 070 SELL BY Apr 8”• Sometimes stamp reads “P1692 070 EXP
Apr 8”• Last 3 digits of the first number indicate
pack date, using the Julian calendar• In Julian dating system, the number
represents the consecutive days of the year• Jan 1 = 001, Dec 31 = 365 (or 366 in a leap year)
• This carton packed on day 070 (Mar 11)
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“P 1692 070 SELL BY Apr 8”
• American Egg Board: fresh shell eggs can be stored in their cartons in refrigerator for 4-5 weeks beyond pack date without significant quality loss
• Eggs would be good until April 8th or 15th
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Recommendations for eggs
• Always buy eggs before "Sell-By" or "EXP" date on carton
• At home, refrigerate eggs in original carton, in coldest part of refrigerator, not in door
• For best quality, use within 3-5 weeks of purchase date• “Sell-by“ or “EXP” date will usually
expire during that time, but eggs are safe to use
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Dates are not a guide for safe use of foods
• Tips: • Buy before
date expires• Follow
handling recommendations on food
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Refrigerate or freeze• Perishables: take
home immediately & refrigerate promptly• Freeze if can't use in
time recommended• Once frozen, date
doesn't matter• Foods kept frozen continuously are safe indefinitely
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Coded or closed dating
• Used for canned/packaged foods with long shelf life
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What is in the code
• Code not readable by consumers• Provides info on date & place of
packing• Useful in recalls• Required on low-acid, canned
foods• Some companies will give
information on what the code means if asked
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Cracking canned food codes
• No uniform coding system used• Some tell day, month, year of
production• Some only give year• Others numbers refer to specific
plant manufacturing or product information
• Usually found on top or bottom of can
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Reading can codes
• Each canned food manufacturer has unique coding system
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Deciphering the date (not universally used)
• For month coding, if a number is used, numbers 1-9 = Jan-Sept, & letters O=Oct, N=Nov, D=Dec• If letters are used, A=Jan &
L=Dec., unless otherwise noted• For year coding, 0=2000;
1=2001; 2=2002, 3=2003, etc
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Examples
• Del Monte Foods• First line, four
digits• Position 1: Year• Position 2, 3 and
4: Julian Date• Example: 9045
(February 14, 2009)
• Bush Brothers & Co• Four digits:• Position 1: Month• Position 2 and 3:
Day• Position 4: Year• Example: 2069
(February 6, 2009)
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General can storage times
• If cans remain in good condition & have been stored in cool, clean, dry place
• High-acid foods can be stored on shelf 12-18 mo.
• Low-acid foods keep 2-5 years
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Once the package/can is open
• Any date is no longer meaningful
• Store correctly to extend shelf-life—see charts in handout
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Tips to determining storage time for top quality
• Buy the food before date expires• Take perishable food home
immediately after purchase, refrigerate promptly
• Freeze food if won’t be used it within times recommended on chart in handout
• Follow handling recommendations on product
• Consult storage chart in handout2009
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What would you do?
• Sally found a carton of eggs in her refrigerator with a date that has already passed. Eggs are expensive these days and she decides to use them anyway.
• What would you do?
2009
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Today you learned:
• The types of open dating & how to make the most of the information provided
• How to interpret egg carton dates
• What closed dating (coded) can tell you about food products
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Questions?
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Sources of information
• Anon. (2007) Food product coding, USDA FSIS at http://www.fsis.usda.gov/factsheets/food_product_dating/index.asp
• Canned Food Alliance at www.mealtime.org
• Henneman, A. (2005) Decoding food product dates, Univ. of Nebraska Cooperative Extension at http://lancaster.unl.edu/food/ftjan05.htm
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