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RESEARCH PRODUCT

Evaluation of the antioxidant capacity, furan compounds and cytoprotective/cytotoxic effects upon Caco-2 cells of commercial Colombian coffee.

Daniel Bedoya-ramírezAmparo Alegría-toránJosé Contreras-calderónAntonio Cilla

subject

AntioxidantCell Survivalmedicine.medical_treatmentmedicine.disease_causeCoffeeAntioxidantsAnalytical Chemistrychemistry.chemical_compound0404 agricultural biotechnologyPhenolsFuranmedicineHumansFood scienceGallic acidFuranschemistry.chemical_classificationReactive oxygen speciesABTSPlant Extracts04 agricultural and veterinary sciencesGeneral MedicineHydrogen Peroxide040401 food scienceOxidative StresschemistryBiochemistryTroloxCaco-2 CellsReactive Oxygen SpeciesOxidative stressIntracellularFood Science

description

Abstract Antioxidant capacity (AC), total phenolics (TPs), furan compounds (HMF and furfural F) and cytoprotective/cytotoxic effects upon Caco-2 cells (MTT, cell cycle and reactive oxygen species (ROS)) were evaluated in Colombian coffee (2 ground and 4 soluble samples). The AC (ABTS and FRAP), TPs and HMF ranged between 124–722, 95–802 μmoles Trolox/g, 21–100 mg gallic acid/g and 69–2900 mg/kg, respectively. Pretreatment of cells for 24 h with lyophilized coffee infusions at the highest dose without cytotoxic effects (500 μg/mL) significantly prevented the decrease in cell viability compared to control stress with H2O2 (5 mM/2 h), recovering viability to values between 34% and 45% and restoring the control values without stress induction in the G1 phase of cell cycle. After exposure to stress, four extracts decreased ROS values significantly to 22.5–24.9%. The coffee samples exerted a cytoprotective effect against oxidative stress, with improvement in cell viability and a reduction of intracellular ROS.

10.1016/j.foodchem.2016.09.159https://pubmed.ncbi.nlm.nih.gov/27765239