scholarly journals Evaluation of antioxidant and anti-tyrosinase activities as well as stability of green and roasted coffee bean extracts from Coffea arabica and Coffea canephora grown in Thailand

2016 ◽  
Vol 8 (10) ◽  
pp. 182-192 ◽  
Author(s):  
Kiattisin Kanokwan ◽  
Nantarat Thananya ◽  
Leelapornpisid Pimporn
Keyword(s):  
Coffea Arabica ◽  
Coffea Canephora ◽  
Coffee Bean ◽  
Roasted Coffee

Effects of regular and decaffeinated roasted coffee (Coffea arabica and Coffea canephora) extracts and bioactive compounds on in vitro probiotic bacterial growth

2020 ◽  
Vol 11 (2) ◽  
pp. 1410-1424 ◽  
Author(s):  
Amanda Luísa Sales ◽  
Juliana dePaula ◽  
Caroline Mellinger Silva ◽  
Adriano Cruz ◽  
Marco Antônio Lemos Miguel ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Bacterial Growth ◽  
Coffea Arabica ◽  
Coffea Canephora ◽  
Roasted Coffee ◽  
Coffee Species

The aim of this study was to investigate the effects of coffee species, roast degree and decaffeination on in vitro probiotic bacterial growth, and to identify the major coffee compounds responsible for such effects.

scholarly journals Hydroxycinnamoyl Amino Acids Conjugates: A Chiral Pool to Distinguish Commercially Exploited Coffea spp.

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1704
Author(s):  
Federico Berti ◽  
Luciano Navarini ◽  
Silvia Colomban ◽  
Cristina Forzato
Keyword(s):  
Amino Acids ◽  
Coffea Arabica ◽  
Coffea Canephora ◽  
Coffee Bean ◽  
Green Coffee ◽  
First Time ◽  
Green Coffee Bean ◽  
Coffea Liberica ◽  
Identification And Quantification

The synthesis of five hydroxycinnamoyl amides (HCAs) was accomplished and their identification and quantification in the green coffee bean samples of Coffea arabica, Coffea canephora, and Coffea liberica was performed. The HCAs p-coumaroyl-N-tyrosine 1b, caffeoyl-N-phenylalanine 2b, caffeoyl-N-tyrosine 3b, and p-coumaroyl-N-tryptophan 4b were characteristic of the C. canephora species while caffeoyl-N-tryptophan 5b was present in both C. canephora and C. arabica, but with higher content in C. canephora. The HCAs presence was also analyzed in C. liberica for the first time and none of the targeted compounds was found, indicating that this species is very similar to C. arabica species. Between C. canephora samples from various origins, significant differences were observed regarding the presence of all the HCAs, with C. canephora from Tanzania containing all five derivatives.

scholarly journals Chemical Analysis, Toxicity Study, and Free-Radical Scavenging and Iron-Binding Assays Involving Coffee (Coffea arabica) Extracts

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4169
Author(s):  
Nuntouchaporn Hutachok ◽  
Pimpisid Koonyosying ◽  
Tanachai Pankasemsuk ◽  
Pongsak Angkasith ◽  
Chaiwat Chumpun ◽  
...  
Keyword(s):  
Free Radical ◽  
Mononuclear Cells ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Chemical Compositions ◽  
Coffee Bean ◽  
Dependent Manner ◽  
Roasted Coffee ◽  
Instant Coffee ◽  
Radical Scavenging Properties

We aimed to analyze the chemical compositions in Arabica coffee bean extracts, assess the relevant antioxidant and iron-chelating activities in coffee extracts and instant coffee, and evaluate the toxicity in roasted coffee. Coffee beans were extracted using boiling, drip-filtered and espresso brewing methods. Certain phenolics were investigated including trigonelline, caffeic acid and their derivatives, gallic acid, epicatechin, chlorogenic acid (CGA) and their derivatives, p-coumaroylquinic acid, p-coumaroyl glucoside, the rutin and syringic acid that exist in green and roasted coffee extracts, along with dimethoxycinnamic acid, caffeoylarbutin and cymaroside that may be present in green coffee bean extracts. Different phytochemicals were also detected in all of the coffee extracts. Roasted coffee extracts and instant coffees exhibited free-radical scavenging properties in a dose-dependent manner, for which drip coffee was observed to be the most effective (p < 0.05). All coffee extracts, instant coffee varieties and CGA could effectively bind ferric ion in a concentration-dependent manner resulting in an iron-bound complex. Roasted coffee extracts were neither toxic to normal mononuclear cells nor breast cancer cells. The findings indicate that phenolics, particularly CGA, could effectively contribute to the iron-chelating and free-radical scavenging properties observed in coffee brews. Thus, coffee may possess high pharmacological value and could be utilized as a health beverage.

Analisis Skrining Fitokimia dan Aktivitas Antioksidan Ekstrakk Biji Sangrai Kopi Robusta (Coffea canephora) dari Tanaman Hasil Pemupukan Organik dan Anorganik

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Farah Aida Qotrun Nada ◽  
Tintrim Rahayu ◽  
Ari Hayati
Keyword(s):  
Statistical Tests ◽  
Linear Regression Analysis ◽  
Coffea Canephora ◽  
Coffee Bean ◽  
Phytochemical Screening ◽  
Robusta Coffee ◽  
A Value ◽  
Coffee Beans ◽  
Ic50 Value ◽  
The Difference

Ground coffee is coffee beans that have been roasted, ground or ground so that they have a smooth shape. The purpose of this study was to determine the content of compounds in robusta coffee roasted seed extract (Coffea canephora) from plants produced by organic and inorganic fertilization, and to know the difference in compounds between the results of organic and inorganic fertilization. The characteristics of phytochemical screening were carried out qualitatively on alkaloids, flavonoids, tannins, terpenoids and saponins and the antioxidant activity was carried out by the DPPH (1,1-dipenyl-2-picrihidrazil) method. Phytochemical screening characteristic test results show that robusta coffee bean extract extract from the results of organic and inorganic fertilization both contain flavonoids, alkaloids, tannins, and saponins, while the antioxidant test activity of robusta coffee beans extracts shows differences based on the results of statistical tests of linear regression analysis with the IC50 value the highest antioxidant content was inorganic coffee roasted bean extract only 14.0629 ppm compared to the organic roasted extract with a value of 30.6159 ppmKeywords: Robusta Coffee (Coffea canophora), Phytochemical Screening, DPPH MethodABSTRAKKopi bubuk adalah biji kopi yang telah disangrai digiling atau ditumbuk sehingga mempunyai bentuk halus. Tujuan dari penelitian ini adalah untuk mengetahui kandungan senyawa dalam ekstrak biji sangrai kopi robusta (Coffe canephora) dari tanaman hasil pemupukan organik dan anorganik, dan mengetahui perbedaan senyawa antara hasil pemupukan organik dan anorganik. Karakteristik skrining fitokimia dilakukan secara kualitatif yang dilakukan terhadap alkaloid, flavonoid, tanin, terpenoid dan saponin dan aktivitas antioksidan dilakukan dengan metode DPPH (1,1-difenil-2-pikrihidrazil). Hasil uji karakteristik skrining fitokimia menunjukkan bahwa ekstrak biji sangrai kopi robusta dari hasil pemupukan oganik dan anorganik keduanya sama mengandung senyawa flavonoid, alkaloid, tanin, dan saponin,  sedangkan pada aktifitas uji antioksidan ekstrak biji sangrai kopi robusta menunjukan perbedaan berdasarkan hasil uji statistik analisis regresi linear dengan nilai IC50 kadar antioksidan paling tinggi adalah ekstrak biji sangrai kopi anorganik hanya 14,0629 ppm dibandingkan dengan ekstrak sangrai dari organik dengan nilai 30,6159 ppm.Kata kunci : Kopi Robusta (Coffea canophera), Skrining Fitokimia, Metode DPPH

Ultraviolet radiation underlies metabolic energy reprograming in Coffea arabica and Coffea canephora genotypes

2022 ◽  
Vol 295 ◽  
pp. 110881
Author(s):  
Wallace de Paula Bernado ◽  
Danilo Força Baroni ◽  
Katherine Fraga Ruas ◽  
Anne Reis Santos ◽  
Sávio Bastos de Souza ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Coffea Arabica ◽  
Coffea Canephora ◽  
Metabolic Energy
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