Peroxidases can be used in the treatment of wastewater containing phenolic compounds. The effluent from the wet processing of coffee fruits contains high content of these pollutants and although some studies propose treatments for this wastewater, none targets specifically the removal of these recalcitrant compounds. This study evaluates the potential use of different peroxidase sources in the oxidation of caffeic acid and of total phenolic compounds in coffee processing wastewater (CPW). The identification and quantification of phenolic compounds in CPW was performed and caffeic acid was found to be the major phenolic compound. Some factors, such as reaction time, pH, amount of H2O2 and enzyme were evaluated, in order to determine the optimum conditions for the enzyme performance for maximum oxidation of caffeic acid. The turnip peroxidase (TPE) proved efficient in the removal of caffeic acid, reaching an oxidation of 51.05% in just 15 minutes of reaction. However, in the bioremediation of the CPW, the horseradish peroxidase (HRP) was more efficient with 32.70% ± 0.16 of oxidation, followed by TPE with 18.25% ± 0.11. The treatment proposed in this work has potential as a complementary technology, since the efficiency of the existing process is intimately conditioned to the presence of these pollutants.
- IWA Publishing
- Enzymatic oxidation of phenolic compounds in coffee processing ...
How To Eliminate the Devastating Effects of the Coffee Leaf Rust Epidemic
The devastating effects of the coffee leaf rust epidemic have reached different countries all over Asia, Africa, and Central and South America. Aside from thousands of people losing their jobs, coffee plantations end up losing millions of dollars. Eliminating the harmful effects of this disease is not impossible. However, it is challenging. Recently, we released CR-10, which is a coffee rust control fungicide. a coffee rust treament… or even better: a coffee rust solution! The active ingredientl is...
The Cure for Coffee Rust Disease: A Mission from A UMD Professor
Coffee rust is a serious disease. It’s been affecting economies of countries all over the world. This disease has been killing coffee crops and thus affecting the coffee production. Therefore, both small and large scale coffee producers have to do something about it. However, combatting with this disease isn’t an easy thing to do. That’s why, Priscila Chaverri, a professor in the plant science and landscape architecture department, wants to help in finding a solution. Next fall, the students of...
How Coffee Rust Affects The Coffee Industry Worldwide
The coffee rust epidemic has reached a lot of countries all over the world and has been a major problem and threat to coffee plantations all over the world. The rust organism mainly attacks the leaves (though in some rare instances the rust was found on fruits and young stems.). The coffee rust is usually manifested by chlorotic young lessions or pale yellow spots before the sporulation is evident. The sports vary in shapes and sizes. This epidemic was first recorded in 1861. A British explorer discovered the...
Champion Cornish: Origin
The next installment of our Champion Cornish blog series focuses on Origin Coffee. Origin are leaders in the field when it comes to producing artisan coffee. They certainly know their stuff with Dan Fellows being rated Number 1 in the 2016 UK Barista Championships, Number 2 in the 2015 UK Coffee in Good Spirits and Number 1 of the same accolade in 2012. It’s not just Dan either. Head of Coffee, Joshua Tarlo, gained Number 2 status last year for the UK Brewers Cup and Hugo Hercod from Relish in Wadebridge...
This man turned an opium field into a sustainable coffee farm in Thailand
Somsak Sriphumthong is on a caffeine-fueled mission. After years living and working abroad, the organic farmer and community leader returned to his native Thailand several years ago — during a time when the forests were being cleared for opium fields and rice plantations. Seeking a sustainable alternative, he started growing and selling organic coffee beans on reclaimed land. Why coffee? Sriphumthong says he “didn’t want to take advantage of society … or harm people” while earning...