Phytochemicals and antioxidant activities during fruit-ripening on Chamaedorea radicalis Mart.
This work aims to determine the phytochemical characterization of the pericarp of Chamaedorea radicalis Mart. fruit as a non-timber product with potential to obtain phytochemicals with potential applications in medicine or in the industry. Determinations of total phenolic compounds, free radical scavenging activities and total flavonoid contents using spectrophotometric methods were done. Also, the identification of phytochemicals was done using UPLC-MS-MS in the four fruit ripeness stages. Total phenolic compound (TPC) content ranged from 7.24 to 12.53 mg gallic acid equivalents per gram of fresh weight (mg GAE/g FW). Total flavonoids (TF) contents ranged from 0.163 to 0.23 mg of quercetin equivalents per g FW (mg QE/g FW). Free radical scavenging activity against DPPH and ABTS radicals varied from 40.80 to 53.68 and from 22.29 to 37.76 mmol Trolox equivalents g FW (mmol TE/g FW), respectively. Antioxidant capacity determined by FRAP (ferric reducing antioxidant power) showed that S3 was the highest level with antioxidant power while S4 was the lowest withRed ripeness stage showed the lowest contents for all determinations. Mass spectrometry allowed detection of 26 compounds, including phenolics, alkaloids and saponins. Afzelin, Kaempferol 3-neohesperidoside and the four saponins identified were present in all ripeness stages. Phytochemicals and the spectrophotometric determinations showed that the pericarp of C. radicalis is potential source for applications in medicine; although, the presence and abundance of each phytochemical regarding each ripeness stage should be considered.
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