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Chlorogenic acid (caffeoylquinic acids isomers—CQA) content in Arabica coffee brews. Legend: G—green coffee beans; R1—light-roasted coffee beans; R2—medium-roasted coffee beans; R3—dark-roasted; AL—Arabica Kopi Luwak; 5-CQA—5-O-caffeoylquinic acid; 4-CQA—4-O-caffeoylquinic acid; 3-CQA—3-O-caffeoylquinic acid; 3,4-diCQA—3,4-dicaffeoylquinic acid; 3,5-diCQA—3,5-dicaffeoylquinic acid; 4,5-diCQA—4,5-dicaffeoylquinic acid. Detailed information about the coffees can be found in Table 1.
