To determine the presence and levels of microbes in unexpired pasteurized milk from randomly selected supermarkets in Kingston, Jamaica. The quantitative study used a stratified random sampling technique in the selection of the 20 representative milk samples from six 6 supermarkets. Microbiological tests such as methylene blue reduction, standard plate count SPC , coliform plate count CPC , purity plate culture, gram staining and biochemical tests were performed to examine the microbes in purchased unexpired pasteurized milk. One sample BCr had a pH of 4. It decolourized within one hour during the methylene blue reduction test and was classified as class 4 milk. Seven of the samples were sterile with no microbe growth on the plate count agar and violet red bile salt agar VRBA.


Like all perishable foods, milk and cream must be handled and stored correctly in order to maintain their quality and safety. Always pick up your milk and cream near the end of your shopping so they will stay cold as long as possible. Be sure the milk is cold and the containers are not leaking. The best before date indicates how long the unopened product will retain its freshness and high quality.

Most participants (82%) indicated that they check the code date on milk every time they shop; 77% said they reached for the code date that was.

At Sargento Foods, cheese is our favorite subject. Below are our answers to some of the questions we are asked most frequently. Mold can develop on cheese once the product is exposed to air. Shredded, cubed and sliced cheese, because they have more surface area, often develop mold faster than chunk cheese. Sargento Foods identifies all products with a freshness date.

This date assures freshness in an unopened package only. For this reason, we recommend using our cheese within 5 days of opening, as stated on the back of the package.

Safe Handling of Milk & Dairy Products

By Niamh Burke, Krzysztof A. Ryan and Catherine C. Sampling and analysis occur along the milk processing train: from collection at farm level, to intake at the diary plant, the processing steps, and the end products. Milk has a short shelf life; however, products such as milk powders have allowed a global industry to be developed.

The 1% refers to the percentage of fat by weight that the milk contains. Buy the freshest milk possible and always use by the “best before date.” Remember to open new milk containers in the same When evaporated milk is reconstituted, or has water added back into it, it can be used in the same way as fresh milk.

Between running a household, trying to meet work deadlines and managing family activities, keeping up to date with how fresh all of your food is may not be top priority. In fact, according to the U. With the exception of infant formula, product dating is not required by federal regulations. The sell-by date is for the grocer. The use-by and best if used by dates indicate freshness.

Grocers rotate items on shelves, placing the most recent dated items at the back.

Shelf-life of dairy products

The product. It was manufactured or the product is the highly perishable products displayed in the food, salad mix, or packaged. When it was manufactured or packaged.

Once you open a food, the best before date is no longer valid. If you store foods properly, many fresh foods like eggs, milk and yogurt can be safely eaten soon.

THE consumer who pays attention to freshness should find shopping for milk and milk-related products relatively simple. The highly perishable products displayed in the dairy case are usually marked to indicate the last date on which the product can be sold. In certain areas some dairy products are dated according to local restrictions; otherwise the date is determined by the manufacturer. In New York City fluid milk and cream are dated according to a regulation established by the municipal Department of Health, and it is illegal to sell them beyond that date.

When the dating is up to the manufacturer, the product may still be sold legally after the date passes, but in practice most processors will recall such products or accept them for return. The expiration date does not mean that the product is unfit for consumption beyond it. Anywhere from a few days’ to a couple of weeks’ leeway is allowed so that with proper storage the consumer can assume the product will remain wholesome for a time in the home.

How long not only is determined by storage conditions and usage but also varies widely from product to product and brand to brand. A fresh dairy product will not have any hint of a rank, sour odor. Even so-called sour cream smells fresh, and any sign of discoloration or mold is an indication of spoilage.

The Dairy Industry: Process, Monitoring, Standards, and Quality

The only available option is to toss it, right? Well, after reading more about best-before dates, you might think twice. Contrary to common perceptions, it is the flavour and texture of a food item that is affected after the best-before date, not its edibility. That is, many foods are still safe to eat after their best-before dates pass.

In Canada, best-before dates are required on food items that will keep fresh for 90 days or fewer. They are not, however, required on pre-packaged fruits and vegetables.

Yet, the date on your milk doesn’t necessarily indicate that it’s no Even after opening, most milk is safe to drink for several days past the use-by or sell-by date​. Proper storage and handling may help it stay fresh and safe for.

If a food has developed such spoilage characteristics, it should not be eaten. Microorganisms such as molds, yeasts, and bacteria can multiply and cause food to spoil. Viruses are not capable of growing in food and do not cause spoilage. There are two types of bacteria that can be found on food: When spoilage bacteria have nutrients food , moisture, time, and favorable temperatures, these conditions will allow the bacteria to grow rapidly and affect the quality of the food.

Food spoilage can occur much faster if it is not stored or handled properly. A change in the color of meat or poultry is not an indicator of spoilage The Color of Meat and Poultry. The quality of perishable products may deteriorate after the date passes but the products should still be wholesome if not exhibiting signs of spoilage.

Understanding Expiration Dates: How do I know when my food’s gone bad?

Shelf-life is the period of time that a food may be stored before it starts to deteriorate or become potentially unsafe. It is influenced by the quality of the raw materials, the manufacturing processes, the way the product is packaged, storage conditions and whether it has been opened. Temperature control during all storage stages is particularly important for most foods — in the retail store and the home. Almost all dairy products need to be stored in the refrigerator.

The exceptions include powdered milk products, and products such as UHT Ultra—high temperature products, which can be stored in the pantry, or ice cream which needs to be stored in the freezer. The period of time each dairy product stays fresh varies significantly.

Terms like “use by” and “sell by” don’t indicate the exact date milk Where and how you store your milk, along with the type of milk, affects its freshness. date and others say to toss it out after just a few days of being open.

There is no uniform or universally accepted system used for food dating in the United States. Depending on which food you are buying, the date on the package could be a recommendation on when it should be sold by or when it should be eaten by. Since confusion surrounding a date could mean throwing out perfectly good food, here are some tips about food package dates and storage for some common foods on your shopping list. Open dating use of a calendar date is found primarily on the package of perishable foods such as meat, poultry, eggs and dairy products.

Except for “use-by” dates, product dates don’t always refer to home storage and use after purchase. See the accompanying refrigerator charts for storage times of dated products. If product has a “use-by” date, follow that date.


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A date on the food package can tell you something about freshness, but it may not tell you quite Although calendar dates indicating freshness appeared occasionally as far back as the specified foods, mainly milk and other dairy products. In addition to calendar dates — the so-called open dates — manufacturers use.

PDF version. Are dates required on these food products? Does it mean the product will be unsafe to use after that date? Here is some background information answering these and other questions about product dating. What is Food Product Dating? Two types of product dating may be shown on a product label. The calendar date provides consumers with information on the estimated period of time for which the product will be of best quality and to help the store determine how long to display the product for sale.

Except for infant formula, product dating is not required by Federal regulations.


What is it? The answer to this question Sherlock et al. Just as with most games, open dating involves rules and regulations, defenders and opponents, and the potential to become a stronger presence in the league of supermarket practices.

A “freshness date” has a different meaning than the word “fresh” printed on regulate these dates for perishable foods, such as milk and eggs.

They tell you how long a product will retain its optimum flavour, texture and nutritional value when stored under normal conditions. Once you open a food, the best before date is no longer valid. If you store foods properly, many fresh foods like eggs, milk and yogurt can be safely eaten soon after their best before dates have expired. They may have lost some of their flavour and their texture may have changed. Think of best before dates as suggestions about how long food will retain its freshness.

The following list indicates how long you can store refrigerated foods to retain their highest quality — their freshness, taste and nutrient levels. Skip to content.

Keeping Milk and Cream Fresh

Information about dates on pre-packaged food is a valuable source of information for consumers. There are different kinds of date markings, depending on the product. The most common terms are “best-before” dates, “packaged on” dates, and expiration dates.

Expiration Date, Spoiled Food, Refrigerator – Shutterstock This date indicates when a product may be past its peak freshness. If you’re worried that you might have rotten eggs on your hands, crack one open and check for.

Grade A milk is carefully produced, processed and packaged in order to protect the safety of the consumer. Grade A milk must be pasteurized to be sold by retailers in interstate commerce. Pasteurization destroys disease-causing bacteria and extends the shelf life of milk. However, pasteurized milk can readily spoil and could cause foodborne illness if not properly protected and handled. Maintaining the Safety of Milk: Refrigeration is the single most important factor in maintaining the safety of milk.

It is critical that these temperatures be maintained through warehousing, distribution, delivery and storage. The cooler refrigerated milk is kept, the longer it lasts and the safer it is. As the product is allowed to warm, the bacteria grow more rapidly. Infants, pregnant women, the elderly and the chronically ill such as those undergoing cancer treatments and individuals with AIDS, diabetes or kidney disease are most at risk from serious illness due to eating any unsafe food.

These individuals and those who care for them must be especially careful to handle milk safely. Fresh Fluid Milk: Fresh milk is categorized mainly by the amount of butterfat it contains. In November , the FDA announced a new rule for milk labeling that helps consumers clarify the difference between 1- and 2-percent milk and reinforces the fact that skim milk is fat-free.

What Is The Meaning Of Sell By Date?