Screening natural antioxidants in peanut shell using DPPH–HPLC–DAD–TOF/MS methods

Measurement of antioxidant activity

“…60 seconds), resulting in loss of DPPH radical and the antioxidant itself, which can be recorded by UV detector (Kedare & Singh, 2011). Some methods monitor decrease of DPPH absorbance at 517 nm (Zhang et al, 2013), while others monitor decrease of antioxidant peak area (Qiu et al, 2012) after the postcolumn reaction. HPLC-DPPH methods can be further coupled with identification of the components showing scavenging capacity towards DPPH radical.…”

Advanced Mass Spectrometry

“…Effect of thermal processing [66] LC-TOF Analysis of pesticides in fruits and vegetables [67] GC-TOF Quantitative analysis of acetaldehyde in foods consumed [68] LC-TOF Screening natural antioxidants in peanut shell [69] UHPLC-TOF Hexabromocyclododecane diastereomers [70] Type Application References UHPLC-TOF 19 antibiotics in dairy products [71] MALDI-TOF Microscale strategy to detect spermine and spermidine in food [72] LC-TOF Determination of phthalates in edible salts from food markets in Korea [73] LC-QqTOF Simultaneous determination five major antioxidant compounds [74] MALDI-TOF Monitoring of she-donkey's milk contamination or adulteration [75] MALDI-TOF Quantitating curcumin in food condiments and dietary supplements and screening of acrylamide-induced ROS protein indicators [76] LC-QqTOF Quantitating curcumin in food condiments and dietary supplements and screening of acrylamide-induced ROS protein indicators [45] UHPLC-TOF Analysis of illicit dietary supplements sold in the Italian market: Identification of a sildenafil thioderivative as adulterant [46] LC-TOF Simultaneous investigation of sesquiterpenes, pyrrolizidine alkaloids, and N-oxides in butterbur (Petasites hybridus) [77] UHPLC-QqTOF Determination of 141 pesticides in tea [78] UHPLC-QqTOF Determination of tadalafil and N-desmethylsibutramine in health and dietary supplements [79] LC-QqTOF Seven fluorescent whitening agents in food contact paper package materials [80] Lipidomics GC × GC-TOF Unsaponifiable fraction of lipids belonging to various types of milk [22] UHPLC-QqTOF Rapid and highly accurate detection of steryl glycoside [81] MALDI-TOF Rapid lipid profiling of bacteria [82] MALDI-TOF Detection of glycated phospholipids in heattreated food samples [83] …”

Total Phenolic Content and Flavone Bioactivity of Peanut Hulls as Antioxidant and Antiproliferation Toward Hela Cancer Cells

“…The seeds and the skin have been studied to have benefits in medicinal chemistry, such as for antioxidant and anticancer [1]. On the other hand, the peanut hulls contain eriodictyol, polyphenols, 5,7-dihydroxychromone, and luteolin [2][3][4]. Previous studied were reported that the phenolic compounds have pharmacological activity, such as antibacterial, anti-inflammatory, and larvacidal activities, as well as an antioxidant activity [5][6][7].…”