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Milk - goes off quicker in glass bottles than plastic ones?


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Old 31-10-2013, 14:23
SapphicGrrl
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I don't drink a lot of milk so I only have two bottles a week delivered by the milkman (yes, I still have a milkman!) - a pint bottle (glass) and a 2-pint bottle (plastic). Every time, the milk in the plastic bottle lasts for ages, but the milk in the glass bottle goes off after only a couple of days (both kept in the fridge of course). We are talking exactly the same milk here - Country Life Organic Skimmed Milk (delivered by Dairy Crest).

In case you were wondering, I'm slightly hamstrung by delivery times - we only get deliveries three days a week, so I've had to work out the quantities based on how much I use at different times of the week. (And they don't do a 1-pint plastic bottle.)

My question is - has anyone else experienced this, or is there any evidence to prove that milk in glass bottles does go off quicker? If so, why? (No suggestions that I should buy milk in the supermarket please - that's not the issue.)
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Old 31-10-2013, 15:44
orangebird
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Because the glass bottle doesn't have a screw top?
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Old 31-10-2013, 16:27
SapphicGrrl
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Because the glass bottle doesn't have a screw top?
Possibly? The foil top always seems pretty secure - I hope it doesn't let anything horrid in, eep!
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Old 31-10-2013, 18:04
noise747
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i get milk in glass bottles and I can keep them in the fridge for 3-4 days and they are fine, but then we do have a local dairy and not some multinational rubbish.
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Old 31-10-2013, 18:09
SapphicGrrl
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i get milk in glass bottles and I can keep them in the fridge for 3-4 days and they are fine, but then we do have a local dairy and not some multinational rubbish.
The Dairy Crest HQ is only a few miles from me - but that doesn't mean the milk comes from there........ Believe me, I'd buy from a local dairy if I could. We used to have a great one here, but it was the usual story - the old man died and the children couldn't be bothered to take over the business (where it was is now an 'executive close'). I had to take what I could get, I'm afraid.
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Old 02-11-2013, 11:00
noise747
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The Dairy Crest HQ is only a few miles from me - but that doesn't mean the milk comes from there........ Believe me, I'd buy from a local dairy if I could. We used to have a great one here, but it was the usual story - the old man died and the children couldn't be bothered to take over the business (where it was is now an 'executive close'). I had to take what I could get, I'm afraid.
That is the problem, we are lucky that we got a local dairy and it been going for years, still owned by the same family, they got their own cows and also bring in milk from other local farms.

It is strange really as it is a farm and dairy in the city

i went off supermarket mailk a few years back and started buying local milk from the local shop, but I did not like the plastic containers, so went for milk delivery and I thought the milk in glass bottles was better than the stuff in the plastic ones and yes they do come from the same place.
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Old 02-11-2013, 11:23
Badcat
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It's all down to the lid. If you kept the milk in a glass bottle with a closeable lid/ cork then it will keep fine. The foil lid is no real barrier as it isn't air tight once it's been opened.
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Old 02-11-2013, 11:28
molliepops
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My husband was milkman we never bought milk from him as it was delivered to the depot at 2am, left outside until loaded onto milk floats then taken out into the community and delivered for 8 hours or more. So your fresh milk delivery could be out of refrigeration for over 12 hours before it got to the door step ! Plastic containers in supermarkets are rarely if ever out of refrigeration before they get into your trolley.
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Old 02-11-2013, 12:57
SapphicGrrl
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My husband was milkman we never bought milk from him as it was delivered to the depot at 2am, left outside until loaded onto milk floats then taken out into the community and delivered for 8 hours or more. So your fresh milk delivery could be out of refrigeration for over 12 hours before it got to the door step ! Plastic containers in supermarkets are rarely if ever out of refrigeration before they get into your trolley.
What a very interesting point that is, thanks. (I wondered if it had something to do with the filling of the milk bottles - the plastic bottles would be delivered to the depot as is, I assume - whereas the glass bottles might be actually filled at the depot, thus allowing more access to the air than the others. That's just a guess though.)

What's funny is that I could have raw milk delivered if I wanted to! (Pricey but readily available.) I wonder how those suppliers juggle freshness and delivery?
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Old 02-11-2013, 16:11
neo_wales
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What a very interesting point that is, thanks. (I wondered if it had something to do with the filling of the milk bottles - the plastic bottles would be delivered to the depot as is, I assume - whereas the glass bottles might be actually filled at the depot, thus allowing more access to the air than the others. That's just a guess though.)

What's funny is that I could have raw milk delivered if I wanted to! (Pricey but readily available.) I wonder how those suppliers juggle freshness and delivery?
Be very very careful with raw milk

"Distribution of raw milk is illegal in Scotland. While it is legal in England, Wales, and Northern Ireland, the only registered producers are in England.[20] About 200 producers sell raw, or "green top" milk direct to consumers, either at the farm, at a farmers' market, or through a delivery service. The bottle must display the warning "this product has not been heat-treated and may contain organisms harmful to health", and the dairy must conform to higher hygiene standards than dairies producing only pasteurised milk.

As it is only legal to supply unpasteurised milk direct to consumers, it is illegal to be sold on the High Street, via shops or supermarkets."
[/i]

From: http://en.wikipedia.org/wiki/Raw_milk

We use green top for most stuff at home, I use blue top for tea (and sometimes Channel Island milk...an occasional treat).
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