Timeline for Do vacuum blenders preserve nutrients and flavour, and produce less foam?
Current License: CC BY-SA 4.0
18 events
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| Nov 17, 2021 at 11:11 | comment | added | piojo | @Zeus Right, I said when the vacuum is released. You're talking about when it is drawn (and bubbles rising and/or popping, which isn't necessarily related to whether bubbles will form). You can see a demonstration here: youtube.com/watch?v=FrqUrdbMAKA&t=134s | |
| Nov 17, 2021 at 8:30 | comment | added | Zeus | @piojo, rather the opposite. In vacuum, bubbles (of the remaining air already present in the mix) will expand to a much larger size and will rise and "pop" at the surface. Using vacuum is a routine way of degassing mixes such as epoxy or silicone, in order to make uniform bubble-free molds. Initially, when exposed to vacuum, the liquid frothes enormously, and then there is simply no air left in it. | |
| Jul 9, 2020 at 20:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 17, 2020 at 9:41 | history | edited | CommunityBot |
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| Mar 11, 2020 at 19:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Feb 3, 2020 at 14:41 | answer | added | Jan | timeline score: 1 | |
| Jan 27, 2020 at 18:00 | history | tweeted | twitter.com/StackSkeptic/status/1221855516391067649 | ||
| Jan 15, 2020 at 2:38 | comment | added | piojo | For claim 2, "less foam", what should logically happen is that the bubbles should be the same or a similar size, but when the partial vacuum is released they will be smashed down to a smaller size, based on how strong the vacuum was. But I doubt physics-based analysis meets this site's standard of proof. | |
| Jan 13, 2020 at 11:45 | comment | added | DevSolar | @Oddthinking: Correct. It would take a) some insight into how oxygen denaturates vitamins and / or other nutritients and degrades flavor, and b) that blending in a vacuum results in the produce having sufficiently less oxygen mixed into it to make a difference (which sounds similar but is yet distinct from answering 2)). Alternatively, of course, an independent study into vacuum blenders vs. conventional blenders, but I guess that would be harder to come by in a form that properly eliminates other variables... | |
| Jan 13, 2020 at 11:22 | comment | added | Oddthinking♦ | @DevSolar: I suspect we are agreeing, but let me check. If someone said: "Here is a journal article that shows apple slices stored in a vacuum packed bag takes longer to turn brown than apple slices stored in a regular plastic bag. Therefore, blended apple juice, stored in a regular jug in the fridge, will stay fresh longer if it was blended in a vacuum." we would both reject that as a leap too far, right? | |
| Jan 13, 2020 at 10:59 | comment | added | jwenting | @T.Sar-ReinstateMonica yes, but largely irrelevant to the use of this specific device which seems to be to create fruit juices. It doesn't seem to claim that the resulting product tastes the same or better, only that it's implied to be "healthier". | |
| Jan 13, 2020 at 10:56 | comment | added | T. Sar | The "less foam" part doesn't seem to me like a plus. Several recipes actively use the air mixed in from a blender to give the dish it's target properties - homemade ice cream being the first one that comes to mind. | |
| Jan 13, 2020 at 10:56 | comment | added | DevSolar | @Oddthinking: Whether you package something in vacuum or blend it in vacuum, the mode of effect is the same -- less exposure to oxygen. The difference would be gradual. As I said, the only thing that would have to be answered for a vacuum blender, specifically, is "lower foam and froth". | |
| Jan 13, 2020 at 10:01 | comment | added | Oddthinking♦ | @Devsolar: I've never used such a device, but I don't think it packages the result into a vacuum. Another source of similar claims suggests that, by mixing less air into the fluids, there is less exposure to oxygen. even if it is stored in a normal jug. This seems the claim to be tested. | |
| Jan 13, 2020 at 9:58 | history | edited | Oddthinking♦ | CC BY-SA 4.0 |
added 32 characters in body; edited title
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| Jan 13, 2020 at 9:53 | comment | added | DevSolar | Claim 1) and 3) are generic to vacuum packaging of foodstuffs, and should be comparatively easy to source. Only 2) is specific to a vacuum blender. | |
| Jan 13, 2020 at 9:50 | history | edited | DevSolar | CC BY-SA 4.0 |
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| Jan 13, 2020 at 9:44 | history | asked | user1605665 | CC BY-SA 4.0 |