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Old 21-05-2006, 10:33 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Jon Shemitz
 
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Default Why Do Ripe Fruits Smell Bad?

Radium wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits. Ethylene [which smells sweet] and putresine
[smells like rotting flesh] are clearly not included in the list of
chemicals that cause ripe fruit to stink.

So what are some of the chemicals that cause the stench of ripe fruits.
Most fruits -- be them oranges, peaches, bananas, guavas, papayas,
mangoes, etc. -- have a very similar stench when ripe.


Well, you are exhibiting a very idiosyncratic reaction to ripe fruit.
Most people prefer ripe fruit to green fruit. (We're wired that way
for a reason - the tannins in green fruit don't agree with our
digestive tract.) It's entirely possible that your problem is simply
that you perceive ethylene differenty than everyone else does.

--

..NET 2.0 for Delphi Programmers http://www.midnightbeach.com/.net

Delphi skills make .NET easy to learn
Being printed - in stores by June
  #17   Report Post  
Old 21-05-2006, 10:38 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Jim Carter
 
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Default Why Do Ripe Fruits Smell Bad?

On 21 May 2006 12:43:16 -0700, "Radium"
wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits.


I find the smell of most ripe fruits to be pleasant.

If you mean overripe fruits then you are smelling the waste
products of the microorganisms that are breaking down the fruit.
The gas likely depends on which putrefying bacteria are prevalent
in your area.
  #18   Report Post  
Old 21-05-2006, 11:54 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
STEPHEN PEEK
 
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Default Why Do Ripe Fruits Smell Bad?

You are correct Om, this poster is a noted troll. You'll find his posts
(similar idiotic questions & argumentative statements) in other groups.
Steve
"OmManiPadmeOmelet" wrote in message
...
In article .com,
"Radium" wrote:

Kimberly wrote:
Is there going to be a test?

Some things just smell bad - even without a noticable smell. Why do
you
think this happens?

Kimberly
smartass gardener who puts all the nearly smelly things in the
compost...


No offense but READ MY LIPS

WHAT CHEMICALS CAUSE OVER-RIPE FRUITS TO STINK
BADLY?


Why don't you try googling it?

http://tinyurl.com/o5yog

I think most of us thought that this was a troll post. ;-)
That's why you are not getting serious answers.

Hope that link above answers your question.

Cheers!
--
Peace!
Om

"My mother never saw the irony in calling me a Son of a bitch"
-- Jack Nicholson



  #19   Report Post  
Old 21-05-2006, 11:55 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
STEPHEN PEEK
 
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Default Why Do Ripe Fruits Smell Bad?

Yeah & last month you were trying to make the perfect wine.
Steve
"Radium" wrote in message
oups.com...

Seymour Bigby-Heinz wrote:
On Sun, 21 May 2006 13:33:58 -0500, OmManiPadmeOmelet
wrote:


I think most of us thought that this was a troll post. ;-)
That's why you are not getting serious answers.


I still think it is a troll post, since there is no indication of what
difference it makes which chemical causes the odor in rotting fruit.


I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits. Ethylene [which smells sweet] and putresine
[smells like rotting flesh] are clearly not included in the list of
chemicals that cause ripe fruit to stink.

So what are some of the chemicals that cause the stench of ripe fruits.
Most fruits -- be them oranges, peaches, bananas, guavas, papayas,
mangoes, etc. -- have a very similar stench when ripe.

Plus, he wants others to do all of his work.


No. I am looking for assistance. I've done as much searching as I can.

Sy




  #20   Report Post  
Old 22-05-2006, 12:32 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Radium
 
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Default Why Do Ripe Fruits Smell Bad?


Jim Carter wrote:
On 21 May 2006 12:43:16 -0700, "Radium"
wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits.


I find the smell of most ripe fruits to be pleasant.

If you mean overripe fruits then you are smelling the waste
products of the microorganisms that are breaking down the fruit.


The gas likely depends on which putrefying bacteria are prevalent
in your area.


Well, according to my nose, most ripe fruits have a similar foul odor.
I really can't describe it well. All I do know, is that the odor is
foul but it does NOT smell like rotting flesh.



  #21   Report Post  
Old 22-05-2006, 12:42 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Radium
 
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Default Why Do Ripe Fruits Smell Bad?


Jon Shemitz wrote:
Radium wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits. Ethylene [which smells sweet] and putresine
[smells like rotting flesh] are clearly not included in the list of
chemicals that cause ripe fruit to stink.

So what are some of the chemicals that cause the stench of ripe fruits.
Most fruits -- be them oranges, peaches, bananas, guavas, papayas,
mangoes, etc. -- have a very similar stench when ripe.


Well, you are exhibiting a very idiosyncratic reaction to ripe fruit.
Most people prefer ripe fruit to green fruit.


Um, I don't mind some red along with the green. My favorite peaches
have an equal amount of red scattered along with equal amount of green.
They are hard, juicy, and sour. But I just abhor when the green part
turns yellow. If its moderately ripe that also okay but it should not
have that stink associated with ripe fruits. This stink I describe is
somewhat like non-sour milk [especially when boiled], fresh swiss
cheese, smelly feet, crotch-sweat, thigh-sweat, female-genitalia,
neck-sweat, yellow mucus, back-sweat, dirty socks, sweaty shirts,
filthy scalp, unwashed hair, etc.

(We're wired that way
for a reason - the tannins in green fruit don't agree with our
digestive tract.)


I seriously doubt that. I think its more to do with personal
experience. Emotions and memories play a vital part in olfactory
functions.

It's entirely possible that your problem is simply
that you perceive ethylene differenty than everyone else does.


I doubt its ethylene. Ethylene has a sweet pleasant smell to it. I have
smelled it myself in a lab. It beautiful.

I like the smell of ethylene, ethanol, as well as the scents emitted
from sour fruits.

--

.NET 2.0 for Delphi Programmers http://www.midnightbeach.com/.net

Delphi skills make .NET easy to learn
Being printed - in stores by June


  #22   Report Post  
Old 22-05-2006, 12:52 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
OmManiPadmeOmelet
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

In article et,
"STEPHEN PEEK" wrote:

You are correct Om, this poster is a noted troll. You'll find his posts
(similar idiotic questions & argumentative statements) in other groups.
Steve


I notice he's ignoring the links...... ;-)
The one I posted had some good sites.

Oh well! Guess it's one more poster for the bozo bin?

Thanks!
--
Peace!
Om

"My mother never saw the irony in calling me a Son of a bitch"
-- Jack Nicholson
  #23   Report Post  
Old 22-05-2006, 04:19 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Radium
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?


OmManiPadmeOmelet wrote:
In article et,
"STEPHEN PEEK" wrote:

You are correct Om, this poster is a noted troll. You'll find his posts
(similar idiotic questions & argumentative statements) in other groups.
Steve


I notice he's ignoring the links...... ;-)
The one I posted had some good sites.


No. I check out those links.

Oh well! Guess it's one more poster for the bozo bin?

Thanks!
--
Peace!
Om

"My mother never saw the irony in calling me a Son of a bitch"
-- Jack Nicholson


  #24   Report Post  
Old 22-05-2006, 02:43 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

Ethylene is effective at ripening fruits at a parts-per-billion level.
It only begins to smell sweet at concentrations above 500
parts-per-million. much higher than would be found in a ripening fruit.

"An ethylene by any other name would smell as sweet!"

John
Aspen Research, - www.aspenresearch.com
"Turning Questions into Answers"

Opinions expressed herein are my own and may not represent those of my
employer.

  #25   Report Post  
Old 22-05-2006, 06:30 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
zxcvbob
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

Radium wrote:
Jim Carter wrote:
On 21 May 2006 12:43:16 -0700, "Radium"
wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits.

I find the smell of most ripe fruits to be pleasant.

If you mean overripe fruits then you are smelling the waste
products of the microorganisms that are breaking down the fruit.


The gas likely depends on which putrefying bacteria are prevalent
in your area.


Well, according to my nose, most ripe fruits have a similar foul odor.
I really can't describe it well. All I do know, is that the odor is
foul but it does NOT smell like rotting flesh.



I think it depends; what has your room-mate been *doing* with those
almost-ripe fruits when you're not there? ;-)

Best regards,
Bob


  #26   Report Post  
Old 22-05-2006, 08:31 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Penelope Periwinkle
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

On Mon, 22 May 2006 11:30:51 -0500, zxcvbob
wrote:

Radium wrote:


Well, according to my nose, most ripe fruits have a similar foul odor.
I really can't describe it well. All I do know, is that the odor is
foul but it does NOT smell like rotting flesh.



I think it depends; what has your room-mate been *doing* with those
almost-ripe fruits when you're not there? ;-)


spurf!

You owe me a keyboard, young man.



Penelope


--
"Maybe you'd like to ask the Wizard for a heart."
"ElissaAnn"
  #27   Report Post  
Old 22-05-2006, 08:32 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Ron Jones
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

Radium wrote:
Jon Shemitz wrote:
Radium wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits. Ethylene [which smells sweet] and putresine
[smells like rotting flesh] are clearly not included in the list of
chemicals that cause ripe fruit to stink.

So what are some of the chemicals that cause the stench of ripe
fruits. Most fruits -- be them oranges, peaches, bananas, guavas,
papayas, mangoes, etc. -- have a very similar stench when ripe.


Well, you are exhibiting a very idiosyncratic reaction to ripe fruit.
Most people prefer ripe fruit to green fruit.


Um, I don't mind some red along with the green. My favorite peaches
have an equal amount of red scattered along with equal amount of
green. They are hard, juicy, and sour. But I just abhor when the
green part turns yellow. If its moderately ripe that also okay but it
should not have that stink associated with ripe fruits. This stink I
describe is somewhat like non-sour milk [especially when boiled],
fresh swiss cheese, smelly feet, crotch-sweat, thigh-sweat,
female-genitalia, neck-sweat, yellow mucus, back-sweat, dirty socks,
sweaty shirts, filthy scalp, unwashed hair, etc.


Sounds like small organic acids to me, particularly butryic.

--
Ron Jones
Process Safety & Development Specialist
Don't repeat history, see unreported near misses in chemical lab/plant
at http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm
not certain about the universe. ~ Albert Einstein


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Old 22-05-2006, 11:01 PM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Radium
 
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Default Why Do Ripe Fruits Smell Bad?


Ron Jones wrote:
Radium wrote:
Jon Shemitz wrote:
Radium wrote:

I am interested in what chemicals are responsible for the foul odors
emitted by ripe fruits. Ethylene [which smells sweet] and putresine
[smells like rotting flesh] are clearly not included in the list of
chemicals that cause ripe fruit to stink.

So what are some of the chemicals that cause the stench of ripe
fruits. Most fruits -- be them oranges, peaches, bananas, guavas,
papayas, mangoes, etc. -- have a very similar stench when ripe.


Well, you are exhibiting a very idiosyncratic reaction to ripe fruit.
Most people prefer ripe fruit to green fruit.


Um, I don't mind some red along with the green. My favorite peaches
have an equal amount of red scattered along with equal amount of
green. They are hard, juicy, and sour. But I just abhor when the
green part turns yellow. If its moderately ripe that also okay but it
should not have that stink associated with ripe fruits. This stink I
describe is somewhat like non-sour milk [especially when boiled],
fresh swiss cheese, smelly feet, crotch-sweat, thigh-sweat,
female-genitalia, neck-sweat, yellow mucus, back-sweat, dirty socks,
sweaty shirts, filthy scalp, unwashed hair, etc.


Sounds like small organic acids to me, particularly butryic.


1. Butryic acid smells like stinky cheese [including swiss], smelly
feet, sweaty shirts, dirty socks neck-sweat, back-sweat, filthy scalp
and unwashed hair.

2. Butyric acid, however, does *not* smell anything near like
crotch-sweat, non-sour boiled milk, female genitals, or thigh-sweat.

The 1st group of products have a cheesy smell. The 2nd group have a
milky smell.

So I guess that there are many compounds that give ripe fruit its
stink.

In ripe fruits, I noticed the stenches of both the 1st and the 2nd
group

--
Ron Jones
Process Safety & Development Specialist
Don't repeat history, see unreported near misses in chemical lab/plant
at http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm
not certain about the universe. ~ Albert Einstein


  #29   Report Post  
Old 25-05-2006, 10:23 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Felch Belch
 
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Default Why Do Ripe Fruits Smell Bad?

Many times a passing animal will try to fertilize the fruiting plant by
unloading its colon on the ground above the roots. This stink is then
absobed into the fruit only when fully ripe. The feces juice turns the
green fruit a different color and imparts to it a diarrhea-like smell.
I have tongued my wife's anus during foreplay occasionally, but only
after she was recently showered. Hence, I am somewhat used to the odor,
whereas you may simply be unaccustomed to it. My advice to you would be
to get to know your grocer or produce supplier and ask them if it would
at all be possible if you could obtain requested fruit in its green
form.

  #30   Report Post  
Old 25-05-2006, 10:46 AM posted to sci.bio.food-science,sci.chem,rec.gardens.edible
Felch Belch
 
Posts: n/a
Default Why Do Ripe Fruits Smell Bad?

Many times a passing animal will try to fertilize the fruiting plant by
unloading its colon on the ground above the roots. This stink is then
absorbed into the fruit only when fully ripe. The feces juice turns the
green fruit a different color and imparts to it a diarrhea-like smell.
I have tongued my wife's anus during foreplay occasionally, but only
after she was recently showered. Hence, I am somewhat used to the odor,
whereas you may simply be unaccustomed to it. My advice to you would be
to get to know your grocer or produce supplier and ask them if it would
at all be possible to obtain requested fruit in its green form.
Otherwise, you may have to tell your wife to drop her drawers, roll
onto her stomach and get ready for a new sensation in order for you to
acquire a taste for that "between the cheeks" funk.

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