A bit late kicking off #ChemAdvent day 1, but here we are!
This year I'm finding chemical connections between some previous ChemAdvent editions 🧪
First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫
This year I'm finding chemical connections between some previous ChemAdvent editions 🧪
First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫
December 1, 2025 at 10:10 PM
A bit late kicking off #ChemAdvent day 1, but here we are!
This year I'm finding chemical connections between some previous ChemAdvent editions 🧪
First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫
This year I'm finding chemical connections between some previous ChemAdvent editions 🧪
First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫
One of my PhD chapters is now out! It’s a review on pyrazines in insects and their biological roles and their evolution.
onlinelibrary.wiley.com/doi/10.1002/...
@lepphylo.bsky.social
@jmappes.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
@lepphylo.bsky.social
@jmappes.bsky.social
Ecology and evolution of pyrazines in insects
Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen-containing hetero...
onlinelibrary.wiley.com
March 26, 2026 at 8:34 AM
One of my PhD chapters is now out! It’s a review on pyrazines in insects and their biological roles and their evolution.
onlinelibrary.wiley.com/doi/10.1002/...
@lepphylo.bsky.social
@jmappes.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
@lepphylo.bsky.social
@jmappes.bsky.social
Remember when we thought that the ability to share information over the internet would be a good thing
December 9, 2024 at 6:26 PM
Remember when we thought that the ability to share information over the internet would be a good thing
It's day 1 of #ChemAdvent24!
On the day that some of you will have been opening advent calendars, here's a look at some compounds that contribute to chocolate's characteristic aroma 🍫
On the day that some of you will have been opening advent calendars, here's a look at some compounds that contribute to chocolate's characteristic aroma 🍫
December 1, 2024 at 6:04 PM
It's day 1 of #ChemAdvent24!
On the day that some of you will have been opening advent calendars, here's a look at some compounds that contribute to chocolate's characteristic aroma 🍫
On the day that some of you will have been opening advent calendars, here's a look at some compounds that contribute to chocolate's characteristic aroma 🍫
Green Bell Pepper in Wine?! 🫑🍷 Think your wine smells like veggies? It’s not a flaw—it’s science! Meet pyrazines, the secret behind green bell pepper aromas. 🌿
#WineFacts #Pyrazines
#WineFacts #Pyrazines
February 18, 2025 at 4:19 PM
Green Bell Pepper in Wine?! 🫑🍷 Think your wine smells like veggies? It’s not a flaw—it’s science! Meet pyrazines, the secret behind green bell pepper aromas. 🌿
#WineFacts #Pyrazines
#WineFacts #Pyrazines
Pyrazines? Bell pepper?
January 7, 2026 at 7:06 PM
Pyrazines? Bell pepper?
Pyrazines are addictive? That explains sommeliers and cab franc.
Remember when we thought that the ability to share information over the internet would be a good thing
December 9, 2024 at 10:11 PM
Pyrazines are addictive? That explains sommeliers and cab franc.
Happy Thanksgiving to those celebrating! Here's some relevant chemistry for the day: www.compoundchem.com/2017/11/23/t...
#ChemSky 🧪
#ChemSky 🧪
November 28, 2024 at 3:48 PM
Happy Thanksgiving to those celebrating! Here's some relevant chemistry for the day: www.compoundchem.com/2017/11/23/t...
#ChemSky 🧪
#ChemSky 🧪
Did you know the sound of popcorn popping isn't caused by the cracking of the corn kernel? For #NationalPopcornDay, here's a portion of popcorn science 🍿 www.compoundchem.com/2017/01/19/p...
#ChemSky 🧪
#ChemSky 🧪
January 19, 2026 at 12:45 PM
Did you know the sound of popcorn popping isn't caused by the cracking of the corn kernel? For #NationalPopcornDay, here's a portion of popcorn science 🍿 www.compoundchem.com/2017/01/19/p...
#ChemSky 🧪
#ChemSky 🧪
Well, its time to start preparing the turkey. This year I wanted to do something "American" for once. So I'm starting with a Coffee-Bourbon Brine. 🌸
We all about the pyrazines 💖
We all about the pyrazines 💖
November 26, 2024 at 4:31 PM
Well, its time to start preparing the turkey. This year I wanted to do something "American" for once. So I'm starting with a Coffee-Bourbon Brine. 🌸
We all about the pyrazines 💖
We all about the pyrazines 💖
A cab franc, heavy on the pyrazines 😩🤌
May 17, 2026 at 8:03 PM
A cab franc, heavy on the pyrazines 😩🤌
Tasted today:
'22 Habit Coquelicot Cabernet - The anti-Napa Cab. Full of barely cassis red fruit, plenty of jalapeño pyrazines and just enough tannin to hold it together in a glou-glou way. I love it, but your expectations need to set appropriately.
#wine #winesky #drinkwhatyoulike #cabernet
'22 Habit Coquelicot Cabernet - The anti-Napa Cab. Full of barely cassis red fruit, plenty of jalapeño pyrazines and just enough tannin to hold it together in a glou-glou way. I love it, but your expectations need to set appropriately.
#wine #winesky #drinkwhatyoulike #cabernet
December 7, 2024 at 2:18 AM
Tasted today:
'22 Habit Coquelicot Cabernet - The anti-Napa Cab. Full of barely cassis red fruit, plenty of jalapeño pyrazines and just enough tannin to hold it together in a glou-glou way. I love it, but your expectations need to set appropriately.
#wine #winesky #drinkwhatyoulike #cabernet
'22 Habit Coquelicot Cabernet - The anti-Napa Cab. Full of barely cassis red fruit, plenty of jalapeño pyrazines and just enough tannin to hold it together in a glou-glou way. I love it, but your expectations need to set appropriately.
#wine #winesky #drinkwhatyoulike #cabernet
Tasted today:
'20 Bernard Baudry Clos Guillot - Full of pyrazines, soft tannin, earthy/funky reduction, purple & dark red fruit + ample acidity. You can make a Vin de garde with this grape (Rougeard, Cheval Blanc) but I love it at it's freshest and most direct.
#wine #winesky #drinkwhatyoulike
'20 Bernard Baudry Clos Guillot - Full of pyrazines, soft tannin, earthy/funky reduction, purple & dark red fruit + ample acidity. You can make a Vin de garde with this grape (Rougeard, Cheval Blanc) but I love it at it's freshest and most direct.
#wine #winesky #drinkwhatyoulike
January 12, 2025 at 5:19 PM
Tasted today:
'20 Bernard Baudry Clos Guillot - Full of pyrazines, soft tannin, earthy/funky reduction, purple & dark red fruit + ample acidity. You can make a Vin de garde with this grape (Rougeard, Cheval Blanc) but I love it at it's freshest and most direct.
#wine #winesky #drinkwhatyoulike
'20 Bernard Baudry Clos Guillot - Full of pyrazines, soft tannin, earthy/funky reduction, purple & dark red fruit + ample acidity. You can make a Vin de garde with this grape (Rougeard, Cheval Blanc) but I love it at it's freshest and most direct.
#wine #winesky #drinkwhatyoulike
No there aren't hints of chocolate and graphite, Alan, there is no chocolate in the wine that's just the pyrazines and you've never eaten graphite
There are two types of wine bad and drinkable and it's up to you which is which 🫡
There are two types of wine bad and drinkable and it's up to you which is which 🫡
December 3, 2023 at 8:59 PM
No there aren't hints of chocolate and graphite, Alan, there is no chocolate in the wine that's just the pyrazines and you've never eaten graphite
There are two types of wine bad and drinkable and it's up to you which is which 🫡
There are two types of wine bad and drinkable and it's up to you which is which 🫡
Tasted today:
'23 Blanchet Pouilly Fumé - Brisk and mineral, more about palate feel and structure then fruit. Tough to find any Sauvignon pyrazines here, which made it a hard wine to identify blind for me. A touch simple, but a well priced quaffer.
#wine #winesky #drinkwhatyoulike
'23 Blanchet Pouilly Fumé - Brisk and mineral, more about palate feel and structure then fruit. Tough to find any Sauvignon pyrazines here, which made it a hard wine to identify blind for me. A touch simple, but a well priced quaffer.
#wine #winesky #drinkwhatyoulike
January 19, 2025 at 6:49 PM
Tasted today:
'23 Blanchet Pouilly Fumé - Brisk and mineral, more about palate feel and structure then fruit. Tough to find any Sauvignon pyrazines here, which made it a hard wine to identify blind for me. A touch simple, but a well priced quaffer.
#wine #winesky #drinkwhatyoulike
'23 Blanchet Pouilly Fumé - Brisk and mineral, more about palate feel and structure then fruit. Tough to find any Sauvignon pyrazines here, which made it a hard wine to identify blind for me. A touch simple, but a well priced quaffer.
#wine #winesky #drinkwhatyoulike
At #WinePro, Dr Aaron Low of amaea explored how molecular filtration is helping winemakers tackle pyrazines, phenolics and off-aromas with greater precision, improving wine quality while supporting efficiency and sustainability.
Full story here https://bit.ly/nz-wg-jun-jul-26
#nzwine #wine #nz
Full story here https://bit.ly/nz-wg-jun-jul-26
#nzwine #wine #nz
July 21, 2026 at 7:15 PM
At #WinePro, Dr Aaron Low of amaea explored how molecular filtration is helping winemakers tackle pyrazines, phenolics and off-aromas with greater precision, improving wine quality while supporting efficiency and sustainability.
Full story here https://bit.ly/nz-wg-jun-jul-26
#nzwine #wine #nz
Full story here https://bit.ly/nz-wg-jun-jul-26
#nzwine #wine #nz
Using a spice blend of cumin seed, sea salt, toasted sesame, and black pepper corn, all freshly ground together creates a wonderful flavor to compliment the burger. Great pungency and the pyrazines create a nice toasty flavor you want.
December 17, 2024 at 11:10 PM
Using a spice blend of cumin seed, sea salt, toasted sesame, and black pepper corn, all freshly ground together creates a wonderful flavor to compliment the burger. Great pungency and the pyrazines create a nice toasty flavor you want.
5️⃣ 👃 Aroma and flavor, however, did differ slightly.
EVOO generated more terpenes (fresh, fruity notes), while pomace oil produced more pyrazines, linked to roasted or slightly burnt aromas.
EVOO generated more terpenes (fresh, fruity notes), while pomace oil produced more pyrazines, linked to roasted or slightly burnt aromas.
October 24, 2025 at 9:21 AM
5️⃣ 👃 Aroma and flavor, however, did differ slightly.
EVOO generated more terpenes (fresh, fruity notes), while pomace oil produced more pyrazines, linked to roasted or slightly burnt aromas.
EVOO generated more terpenes (fresh, fruity notes), while pomace oil produced more pyrazines, linked to roasted or slightly burnt aromas.
It's National Popcorn Day! Here's a look at what gives popcorn its flavour and what makes it pop: www.compoundchem.com/2017/01/19/p...
January 19, 2024 at 8:58 PM
It's National Popcorn Day! Here's a look at what gives popcorn its flavour and what makes it pop: www.compoundchem.com/2017/01/19/p...
FYI: Is Your Wine Too Green? The Pyrazine Problem: What are pyrazines, and why do they matter in wine? #Wine #WineLovers #WineTasting #WineEducation #Pyrazines
Is Your Wine Too Green? The Pyrazine Problem
What are pyrazines, and why do they matter in wine?
www.vinetur.com
January 30, 2025 at 12:03 PM
FYI: Is Your Wine Too Green? The Pyrazine Problem: What are pyrazines, and why do they matter in wine? #Wine #WineLovers #WineTasting #WineEducation #Pyrazines
Encapsulation and isomer discrimination of substituted pyrazines by an adaptable cofacial zinc porphyrin dimer | ChemRxiv chemrxiv.org/doi/full/10....
Encapsulation and isomer discrimination of substituted pyrazines by an adaptable cofacial zinc porphyrin dimer | ChemRxiv
Positional isomers of substituted pyrazines—important aroma compounds and pharmacophores—are
notoriously difficult to distinguish because of their nearly identical physical properties,
and hosts that ...
chemrxiv.org
June 12, 2026 at 10:02 AM
Encapsulation and isomer discrimination of substituted pyrazines by an adaptable cofacial zinc porphyrin dimer | ChemRxiv chemrxiv.org/doi/full/10....
New paper (in press, Dalton Trans.)! Our rigid cofacial Zn-porphyrin dimer encapsulates sterically hindered substituted pyrazines, which are difficult targets for metalloporphyrins, and discriminates positional isomers of identical formula. doi.org/10.1039/d6dt...
August 21, 2026 at 11:42 AM
New paper (in press, Dalton Trans.)! Our rigid cofacial Zn-porphyrin dimer encapsulates sterically hindered substituted pyrazines, which are difficult targets for metalloporphyrins, and discriminates positional isomers of identical formula. doi.org/10.1039/d6dt...
Is Your Wine Too Green? The Pyrazine Problem: What are pyrazines, and why do they matter in wine? #Wine #Pyrazine #WineEducation #WineTasting #Sommelier
Is Your Wine Too Green? The Pyrazine Problem
What are pyrazines, and why do they matter in wine?
www.vinetur.com
January 25, 2025 at 12:00 PM
Is Your Wine Too Green? The Pyrazine Problem: What are pyrazines, and why do they matter in wine? #Wine #Pyrazine #WineEducation #WineTasting #Sommelier
Happy Thanksgiving to those celebrating! Here's some relevant chemistry for the day: www.compoundchem.com/2017/11/23/t...
November 23, 2023 at 10:23 PM
Happy Thanksgiving to those celebrating! Here's some relevant chemistry for the day: www.compoundchem.com/2017/11/23/t...