2-Methyloxolane as an effective bio-based solvent for the removal of ßN-alkanoyl-5-hydroxytryptamines from Arabica green coffee beans.
Food Chem
; 457: 140135, 2024 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-38901340
ABSTRACT
ßN-alkanoyl-5-hydroxytryptamines (Cn-5HTs) are the main constituents of coffee wax and may be responsible for the increased severity of gastric disorders in sensitive consumers. Their removal from green coffee beans can result in a "stomach-friendly" brew. This work presents a green approach to Cn-5HTs extraction using the bio-based solvent 2-methyloxolane (2-MeOx). HPLC/DAD analyses on Arabica Brazil samples show that mild conditions (30 min at 50 °C) extract about 90% of the wax, without affecting the caffeine content of the beans, whereas almost complete removal is achieved in 60 min at reflux. 2-MeOx forms an azeotrope with water, its possible re-use has been demonstrated using aqueous 2-MeOx (95.5%) as the solvent. These preliminary results make 2-MeOx a possible candidate for the replacement of dichloromethane (DCM) in coffee dewaxing. The importance of fermentation in reducing Cn-5HTs by about 36% has been demonstrated in an analysis of green beans subjected to different post-harvest treatments.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Semillas
/
Coffea
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Food Chem
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Reino Unido