2-furfurylthiol
Structural formula | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
General | ||||||||||||||||
Surname | 2-furfurylthiol | |||||||||||||||
other names |
|
|||||||||||||||
Molecular formula | C 5 H 6 OS | |||||||||||||||
Brief description |
colorless, malodorous liquid |
|||||||||||||||
External identifiers / databases | ||||||||||||||||
|
||||||||||||||||
properties | ||||||||||||||||
Molar mass | 114.17 g mol −1 | |||||||||||||||
Physical state |
liquid |
|||||||||||||||
density |
1.128 g cm −3 |
|||||||||||||||
boiling point |
155 ° C |
|||||||||||||||
solubility |
|
|||||||||||||||
Refractive index |
1.531 (20 ° C) |
|||||||||||||||
safety instructions | ||||||||||||||||
|
||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C |
2-Furfurylthiol is a flavoring substance and one of the main components of the coffee flavor.
Occurrence
The content of 2-furfurylthiol in roasted coffee is 1–2 mg · kg −1 . About a third of this goes into the hot beverage during coffee preparation. 2-Furfurylthiol has been found in raw and fried chicken, boiled beef, grilled pork, sesame oil, and popcorn along with coffee. The content in cooked meat is 2 to> 100 µg · kg −1 . This means that 2-furfurylthiol is a main component of the aroma of cooked meat.
Manufacturing
2-Furfurylthiol can be produced by the reaction of 2-furan methanol , thiourea and hydrochloric acid .
In addition, 2-furfurylthiol can also be produced microbially and purchased commercially.
properties
2-Furfurylthiol is a malodorous colorless liquid. In a strong dilution (0.1–1 ppb), their smell is similar to the smell of coffee.
use
2-Furfurylthiol is used in beverages, pastries and sweets, among other things.
Use in various foods | |||
---|---|---|---|
Alcoholic drinks | 0.05-1.7 ppm | Sauces | 0.20-0.80 ppm |
Pastries | 4.54-6.14 ppm | Hard candy | 24.38 ppm |
Spice side dishes | 0.10 ppm | Meat products | 0.04-0.13 ppm |
Frozen dairy products | 2.48-3.30 ppm | Non-alcoholic beverages | 1.12-1.84 ppm |
pudding | 1.02-2.35 ppm | Soft candy | 2.54-3.55 ppm |
safety instructions
The vapors of 2-furan methanethiol can form an explosive mixture with air ( flash point 45 ° C).
Individual evidence
- ^ Entry on FEMA 2493 in the database of the Flavor and Extract Manufacturers Association of the United States .
- ↑ a b c d e f g Entry on 2-furan methanethiol in the GESTIS substance database of the IFA , accessed on February 11, 2018(JavaScript required) .
- ↑ a b c d e f Fenaroli, Giovanni: Fenaroli's handbook of flavor ingredients . Sixth ed. Boca Raton 2009, ISBN 978-1-4200-9077-2 .
- ↑ Data sheet 2-furanmethanethiol, 98% from Sigma-Aldrich , accessed on February 11, 2018 ( PDF ).
- ↑ a b Entry on 2-furyl methanethiol. In: Römpp Online . Georg Thieme Verlag, accessed on February 10, 2018.
- ↑ a b c Eisenbrand, Gerhard; Meyer, Alfred Hagen; Schreier, Peter: Römpp-Lexikon Lebensmittelchemie [M - Z] . 2., completely redesigned. and exp. Ed. Thieme, Stuttgart [u. a.] 2006, ISBN 3-13-736602-X .
- ↑ Surburg, Horst Panten, Johannes: Common fragrance and flavor materials: preparation, properties and uses. 5th edition. Wiley-VCH, Weinheim 2006, ISBN 3-527-31315-X .