Recovery of Natural Antioxidants from Spent Coffee Grounds

Spent coffee grounds (SCG) were extracted with an environmentally friendly procedure and analyzed to evaluate the recovery of relevant natural antioxidants for use as nutritional supplements, foods, or cosmetic additives. SCG were characterized in terms of their total phenolic content by the Folin–C...

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Bibliographic Details
Published inJournal of agricultural and food chemistry Vol. 61; no. 17; pp. 4162 - 4168
Main Authors Panusa, Alessia, Zuorro, Antonio, Lavecchia, Roberto, Marrosu, Giancarlo, Petrucci, Rita
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 01.05.2013
Subjects
additives
antioxidant activity
antioxidants
Antioxidants - chemistry
Biological and medical sciences
caffeine
Caffeine - analysis
Calibration
chlorogenic acid
Chlorogenic Acid - analysis
Chromatography, High Pressure Liquid
Coffee - chemistry
dietary supplements
flavonoids
Flavonoids - analysis
Food industries
foods
Fundamental and applied biological sciences. Psychology
Mass Spectrometry
phenolic compounds
Phenols - analysis
UHPLC-PDA-TOF-MS
phenolic compounds
solvent extraction
antioxidants
spent coffee grounds
Ground coffee
Phenols
Antioxidant
Solvent extraction
Natural
Recovery
Mass spectrometry
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Summary:Spent coffee grounds (SCG) were extracted with an environmentally friendly procedure and analyzed to evaluate the recovery of relevant natural antioxidants for use as nutritional supplements, foods, or cosmetic additives. SCG were characterized in terms of their total phenolic content by the Folin–Ciocalteu procedure and antioxidant activity by the DPPH scavenging assay. Flavonoid content was also determined by a colorimetric assay. The total phenolic content was strongly correlated with the DPPH scavenging activity, suggesting that phenolic compounds are mainly responsible for the antioxidant activity of SCG. An UHPLC-PDA-TOF-MS system was used to separate, identify, and quantify phenolic and nonphenolic compounds in the SCG extracts. Important amounts of chlorogenic acids (CGA) and related compounds as well as caffeine (CAF) evidenced the high potential of SCG, a waste material that is widely available in the world, as a source of natural phenolic antioxidants.
Bibliography:http://dx.doi.org/10.1021/jf4005719
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-8561
1520-5118
DOI:10.1021/jf4005719