1996
DOI: 10.1016/0308-8146(95)00104-2
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Composition of green coffee water-soluble fractions and identification of volatiles formed during roasting

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Cited by 95 publications
(80 citation statements)
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“…During the roasting process, trigonelline suffers severe thermal degradation generating a series of volatile compounds responsible for flavor formation and aroma production and it is used as roasting-level discriminator in both Arabica and Robusta coffees [56,59,69]. The compounds, such as pyridine and pyrrole derivatives, nicotinic acid, methyl ester of nicotinic acid and above 20 different compounds, are formed [70,71]. Trigonelline is also degraded by decarboxylation generating the N-methylpyridinium cation, the inductor of enzyme systems involved in detoxification of xenobiotics [72], activator of the Nrf2/ ARE pathway, inducing cellular defense mechanisms [73,74] and novel phytoestrogen [75].…”
Section: Determination Of Trigonelline and Nicotinic Acidmentioning
confidence: 99%
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“…During the roasting process, trigonelline suffers severe thermal degradation generating a series of volatile compounds responsible for flavor formation and aroma production and it is used as roasting-level discriminator in both Arabica and Robusta coffees [56,59,69]. The compounds, such as pyridine and pyrrole derivatives, nicotinic acid, methyl ester of nicotinic acid and above 20 different compounds, are formed [70,71]. Trigonelline is also degraded by decarboxylation generating the N-methylpyridinium cation, the inductor of enzyme systems involved in detoxification of xenobiotics [72], activator of the Nrf2/ ARE pathway, inducing cellular defense mechanisms [73,74] and novel phytoestrogen [75].…”
Section: Determination Of Trigonelline and Nicotinic Acidmentioning
confidence: 99%
“…Several examples of these methods are presented in Table 3. Nevertheless, gas chromatography was also used for analysis of trigonelline [70].…”
Section: Determination Of Trigonelline and Nicotinic Acidmentioning
confidence: 99%
“…For example, sucrose, which ranges from 6 % to 8.5 % in Arabica and from 0.9 to 4.9 % in Robusta (Clifford, 1985a;Campa et al, 2004), is considered as one the major contributors to coffee cup quality because its degradation during roasting leads to a wide range of compounds (i.e. aliphatic acids) involved in coffee flavor, either as the volatile aroma compounds, or as non-volatile taste compounds (De Maria et al, 1996;Tressl et al, 1998;Ginz et al, 2000). In contrast, caffeine and chlorogenic acids (CGA) are found at higher levels in Robusta than in Arabica, and are responsible for beverage bitterness (Leloup et al, 1995).…”
Section: Introductionmentioning
confidence: 99%
“…O processo de torração do café é aparentemente simples, mas do ponto de vista químico é muito complexo. Diversas reações que ocorrem simultaneamente, como a reação de Maillard, degradação de Strecker, degradação de proteínas, polissacarídeos, trigonelina e ácidos clorogênicos (DE MARIA et al, 1996), contribuem para a formação de compostos que vão influenciar na qualidade da bebida.…”
Section: Introductionunclassified