Total Polyphenols, Antioxidant, Antimicrobial and Allelopathic Activities of Spend Coffee Ground Aqueous Extract

Spend ground coffee is largely produced worldwide, representing a residue that still present several bioactive compounds. The objective of this study was to evaluate the antimicrobial, antioxidant and herbicide activities of aqueous extract of coffee grounds, obtained at the ratio of 10 g/L (mass of...

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Bibliographic Details
Published in:Waste and biomass valorization 2017-03, Vol.8 (2), p.439-442
Main Authors: Sant’Anna, Voltaire, Biondo, Elaine, Kolchinski, Eliane Maria, da Silva, Luís Fernando Schröetter, Corrêa, Ana Paula Folmer, Bach, Evelise, Brandelli, Adriano
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Antioxidants
Biomass
Chelation
Coffee
Engineering
Environment
Environmental Engineering/Biotechnology
Germination
Herbicides
Industrial Pollution Prevention
Polyphenols
Renewable and Green Energy
Scavenging
Short Communication
Waste Management/Waste Technology
Wastewater
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Summary:Spend ground coffee is largely produced worldwide, representing a residue that still present several bioactive compounds. The objective of this study was to evaluate the antimicrobial, antioxidant and herbicide activities of aqueous extract of coffee grounds, obtained at the ratio of 10 g/L (mass of waste/water volume). Spend ground coffee aqueous extract presented total polyphenol concentration of 5.66 mg GAE/g, ABTS scavenging activity of 80.5 % and iron chelating activity of 44.2 %. The results also showed that spend ground coffee extract did not inhibit the growth of phytopathogenic fungi or the foodborne pathogenic bacteria tested. On the other hand, the extract presented allelopathic activity by inhibiting the lettuce seed germination, reducing seed germination parameters and the germination speed index. Thus, the results indicate that the aqueous extract of coffee grounds has the potential to be used as a natural organic crop herbicide.
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-016-9575-4