Do Chilis Ripen “off the vine”?

Question

In light of the question Are chillies hotter when they're ripe?, in particular – @ElendilTheTall's answer. I am wondering if chilies continue to ripen after picking? If so, does capsaician continue to build up.

What is the 'peek of freshness/ripeness' for chilies? (assuming it is different for each type of pepper, but are there 'commonalities' to look for?)

Asked by Cos Callis

Answer

Yes, they will ripen off the vine (and gain capsaician in the process) because they are a climacteric fruit. They do this best in a paper bag, like most peppers. However, there is a limit to this because they will eventually wilt.

Answered by smcg

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Is it scientifically verified that bananas will ripen faster when kept in a bowl with other fruit?

Question

I've heard you shouldn't keep bananas in a bowl with other fruit. But they all look so happy together.

What I'd like to see is hard science here. Or at least documented and repeatable observation. For example, I read lots of people saying simply "it's the ethylene gas", but what's eluded my searching eye is a chart of which common fruits emit how much of this gas, or the ripening effect of x amount of this gas for y duration at z distance from other fruits in the vicinity. I'd do an experiment myself, but I don't have any particular biology expertise to properly structure a control, etc., and maybe it's already been done?

While I'm not saying this oft-heard claim is false, I am saying I've neither been convinced that it's verifiably so as far as having been proven, nor convinced that any ripening-hastening is of significant concern (shortens the life of a banana by a day or more). If it is, we'll have to issue a cease-and-desist order to my household regarding the convenient stacking of all our colorful fruit friends in one place.

Follow-up inquiry: Even if this banana ripening-rate-quickening is true for apples and oranges, are there certain fruits that are okay to leave in the bowl with bananas?

Asked by zanlok

Answer

For Apples, see:

• The Role of Ethylene in Determining Apple Harvest and Storage Life, in the May 1986 Post Harvest Pomology Newsletter, Vol. 4(1)

There are also various websites that give instructions if you'd like to do experiments yourself (generally geared towards classroom instruction):

• http://chemistry.about.com/od/chemistryexperiments/ss/ethyleneexp.htm
• http://botany.org/bsa/misc/mcintosh/badapple.html

... but for a more complete list, go to Google Scholar, and search for 'ethylene' + whatever fruit you're interested in; you'll find stuff going back many, many decades.

Answered by Joe

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How do I ripen a Mango?

Question

I've bought a fresh mango for a recipe, I've not used mango fresh before and it's currently pretty green (there didn't seem to be any that were more ripe at the shop) and came with a sticker on informatively saying just "Ripen at home".

So, what's the best environment to help it ripen?
Should it be refrigerated during ripening and/or when ripe?
And how do I reliably tell when it's 'ready'?

Asked by DMA57361

Answer

You can let it ripe at room temperature.

If you want to slow down the ripening process, put it in the fridge, although this will affect the mango negatively. If you want to speed up the process, put it in a bag with a banana.

When the mango is ready to eat, it will be slightly soft if you press it and you can smell the mango flesh through the peel. The green colour will not totally disappear.

Answered by Mien

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How can I speed up banana ripening?

Question

I need to make banana bread tomorrow, and the bananas I recently purchased with this in mind to not appear to be ripening fast enough. Is there anyway to speed the ripening without spoiling the bananas altogether?

(I have looked at this answer and it refers to how the fridge will speed up "blackening". @Sarge_Smith describes it as a different process chemically, so I am unsure that blackening == ripening for the purpose of making banana bread.)

Asked by Cos Callis

Answer

Bananas are imported unripe and then ripened in the country of sale. This ripening is achieved by forcing ethylene gas through the bananas in special pressurised rooms.

Bananas naturally produce ethylene as they ripen, so you could just put them in a sealable plastic bag to contain that gas. Tomatoes also produce ethylene, so you could pop a couple of those in as well, but be aware that they'll also ripen faster too.

Answered by ElendilTheTall

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