![]() If whole milk does last longer than skim, the difference is so slight that any given gallon of skim milk could outlast any given gallon of whole milk. So for the purposes of your average milk consumer, there's really no hard-and-fast rule about which kind will spoil faster. (Whole milk, for the record, tended to turn sour, and skim milk was on the bitter side. There was a pronounced difference in how whole and skim milk reacted when they were injected with the same spoilage microorganisms, but they affected the milk's taste and smell more than they did the spoilage rate. When the milk spoiled, both whole and skim contained similar strains of bacteria. ![]() Psychrotrophic, or cold-resistant, bacteria are what cause spoilage in the fridge, and they multiplied at the same rate in both types of milk. Skim milk was found to spoil slightly faster, but the researchers weren't exactly sure why. There's been only one major controlled study on the spoilage rates of whole and skim milk, and it was somewhat inconclusive. ![]() Still others say that maybe there isn't a difference in spoilage rate at all - it's just that we notice flavor changes more in skim milk. Others say that whole milk lasts longer because free fatty acids might actually be natural preservatives. Some dairy scientists say skim lasts longer because certain fat-loving microbes can't develop as quickly in nonfat milk. Why is that?īefore we get started, we should state that there is by no means universal agreement on this issue. But if you've ever looked at a shelf-life chart to figure out how long your milk might last, you might have noticed that on skim milk is said to last a day or two longer than whole milk. You might be able to eyeball some of the suspicious items, check for expiration dates on others, and with some - milk, usually - you'll probably take a quick whiff and hope for the best. Reducing the fat in your milk is one thing, but if you continue to cook with butter, eat pies and have a coffee with a banana bread, your risk of heart disease or diabetes is not likely to be any lower, if anything probably worse.We've all had moments of uncertainty (and, let's face it, paranoia) about the state of the food sitting in our refrigerators. Fat also slows down digestion which gives a lasting feeling of fullness, and studies have found that when people reduce how much fat they eat, they tend to bulk up on other calorific foods, including carbs and sugar, which can give us a much higher risk of diabetes (not to mention the waistline) in the long run. The down side? You'll absorb less of the nutrients in milk without the fat, particularly the fat soluble vitamins such as vitamin D, A and E. Secondly, lower-fat milks are slightly higher in calcium and protein than regular milk, and don't have added sugar as commonly perceived. A glass of full cream milk contains almost 10 grams of fat and roughly 738 kilojoules compared to reduced fat or skim, which has between two grams and zero grams of fat and between 495 - 375 kilojoules. Wondering if there's any value in reduced-fat dairy? The simple answer is yes, particularly if you want to curb calories. The fat in your flat white could actually be good for you. ![]() Full cream dairy foods are a significant source of saturated fat and over the last few decades the focus has been on reducing this type of fat in our diets to stave off heart attacks - this meant all sources of saturated fat were evil, including full cream milk. Should guidelines be changed?īefore we criticise national dietary recommendations it's important to understand why low fat dairy is still advised. Even the latest dietary guidelines for Australians still make this message clear.īut recent research, based on a large population study shows that full-fat dairy isn't so bad for you after all - that is, full fat drinkers tend to weigh less and have a reduced risk of diabetes. But the question still lingers - which is best for your health and your waistline?įor more than a decade health authorities have insisted adults go lean and ditch the cream. When it comes to dairy, you have the choice of skim or full fat and a plethora of options in the middle. Is it time to change the guidelines recommending low fat milk? Photo / Getty Images ![]()
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