Detail publikace

The effect of coffee beans roasting on its chemical composition

DIVIŠ, P. POŘÍZKA, J. KŘIKALA, J.

Originální název

Typ

článek v časopise ve Scopus, Jsc

Jazyk

angličtina

Originální abstrakt

Drinking coffee has become part of our everyday culture. Coffee cultivation is devoted to over 50 countries in the world, located between latitudes 25 degrees North and 30 degrees South. Almost all of the world's coffee production is provided by two varieties, called ‘Arabica’ and ‘Robusta’ whereas the share of Arabica is 70% of the world's coffee harvest. Green (raw) coffee can not be used to prepare coffee beverages, coffee beans must first be roasted. Roasting coffee and reaching a certain degree of coffee roasting determine its flavor and aroma characteristics. In the present study the fate of sucrose, chlorogenic acid, acetic acid, formic acid, lactic acid, caffeic acid, total phenolic compounds and 5-hydroxymethylfurfural was studied in coffee (Brazil Cerrado Dulce, 100% Arabica) roasted in two ways (Medium roast and Full city roast). It has been found that almost all sucrose has been degraded (96 – 98%) in both roasting ways. During Medium roast 65% of chlorogenic acid contained in green coffee was degraded while during Full city roast it was 85%. During both Medium and Full city roasting, the formation of acetic acid but especially formic and lactic acid was recorded. The highest concentration of organic acids was recorded at Full City roasting at medium roasting times (3.3 mg.g-1 d.w. acetic acid, 1.79 mg.g-1 d.w. formic acid, 0.65 mg.g-1d.w. lactic acid). The amount of phenolic substances also increased during roasting up to 16.7 mg.g-1 d.w. of gallic acid equivalent. Highest concentrations of 5-hydroxymethylfurfural were measured at medium roasting times at both Medium (0.357 mg.g-1 d.w.) and French city (0.597 mg.g-1 d.w.) roasting temperatures. At the end of roasting, the 5-hydroxymethylfurfural concentration in coffee were 0.237 mg.g-1 d.w. (Medium roast) and 0.095 mg.g-1 d.w. (Full city roast).

Klíčová slova

coffee, roasting, hydroxymethylfurfural, sucrose, organic acids

Autoři

DIVIŠ, P.; POŘÍZKA, J.; KŘIKALA, J.

Vydáno

6. 5. 2019

ISSN

1337-0960

Periodikum

Potravinarstvo Slovak Journal of Food Sciences

Ročník

Číslo

Stát

Slovenská republika

Strany od

344

Strany do

350

Strany počet

URL

https://www.scopus.com/record/display.uri?eid=2-s2.0-85083767019&origin=inward&txGid=5db58bc4f8b0c7ca4a4ade523d6c44e4

BibTex

@article{BUT156821,
  author="Pavel {Diviš} and Jaromír {Pořízka} and Jakub {Křikala}",
  title="The effect of coffee beans roasting on its chemical composition",
  journal="Potravinarstvo Slovak Journal of Food Sciences",
  year="2019",
  volume="13",
  number="1",
  pages="344--350",
  doi="10.5219/1062",
  issn="1337-0960",
  url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85083767019&origin=inward&txGid=5db58bc4f8b0c7ca4a4ade523d6c44e4"
}