Table 1.

Antioxidants from different biological sources.

Source	Antioxidants	Ref.
Bacteria	Thiazostatins A, 5-(2,4-Dimethylbenzyl) Pyrrolidin-2-One, Phenazoviridin, Benthophoenin, Benthocyanins A, B and C, Benzastatins C, Benzastatins A, (Z)-1-((1-Hydroxypenta-2,4-Dien-1-Yl)Oxy)Anthracene-9,10-Dione	[53]
Plants	Gallic acid, Protocatechuic acid, p-Coumaric acid, Caffeic acid, Rosmarinic acid, Carnosol, Carnosic acid, Rosmanol, Rutin, Epicatechin gallate, Epigallocatechin gallate, Epicatechin, Quercetin (flavanol), Eugenol, Carvacrol, Safrole, Thymol, Myristicin, Menthol, 1,8-Cineol, α-Terpineol, p-Cymene, Cinnamaldehyde, Piperine, Flavone, Flavonol, Chalcone, Flavanone, Anthocyanin, Anthocyanidin-3,5-glucoside, Alpha tocopherol, Gamma tocopherol, Ascorbic acid, Ascorbyl palmitate, Propyl gallate, Resveratrol	[55]
Fungi	Isopestacin, Pestacin, Atrovenetin, 2-Acetonyl-2,4,9,-Trihydroxy-6-Methoxy-7-Methyl-1HPhenalene-1,3(2H)-Dione, Graphislactone, 4,6-dihydroxy-5-methoxy-7-methyl-1,3-dihydroisobenzofuran, 4,5,6-trihydroxy-7-methyl-1,3-dihydroisobenzofuran, 4,6-dihydroxy-5-methoxy-7-methylphthalide, Kojic acid, Phomapyrone C, Versicolone A, Terremutin, Terreic Acid, Neoechinulin A, Candidusin B, 3″-Dihydroxyterphenyllin and 3-Hydroxyterphenyllin, p-Hydroxybenzoic acid, Protocatechuic acid, Gallic acid, Gentisic acid, Vanillic acid, 5-Sulfosalicylic acid, Syringic acid¸ Veratric acid, Vanillin, Cinnamic acid, p-Coumaric acid, o-Coumaric acid, Caffeic acid, Ferulic acid, 3-O-Caffeoylquinic acid, 4-O-Caffeoylquinic acid, 5-O-Caffeoylquinic acid, Quercetin, Rutin, Kaempferol, Myricetin, Chrysin, Catechin, Hesperetin, Naringenin, Naringin, Formometin, Biochanin, Pyrogallol, Resveratrol, Ellagic acid, Tannic acid, Sinapic acid, Flavonols, Flavones, Isoflavones, Flavanones, Anthocyanidins, Flavanols, Vitamin C, Vitamin E, Homogentisic acid	[53,56,57]
Algae	β-carotene, Lutein, Bromophenol, Carrageenan, Fucophlorethols, Fucoxanthin, Galactan sulphate, Phlorotannins, Phycoerythrin, Porphyran, Shinorine, Catechin, Epicatechin, Gallate, Alginic acid, Laminaran, Vitamin A, Phloroglucinol, Eckol, Fucodiphlorethol G, Phlorofucofuroeckol A, 7-phloroeckol, Dieckol, 6,6′-bieckol, Triphlorethol-A, 2,7′-phloroglucinol-6,6′-bieckol	[58,59]
Lichens	1-Chloropannarin, 2-O-Methylsekikaic acid, Atranol, Atranorin, Barbatic acid, Boninic acid, Chloroatranol, Chloroatranorin, Chlorohematommic acid, Cryptostictinolide, Divaricatic acid, Ergosterol peroxide, Ethyl chlorohematommate, Evernic acid, Fumarprotocetraric acid, Gyrophoric acid, Hematommic acid, Lecanoric acid, Lecanoric acid, Methyl orsellinate, Orcinol, Physodic acid, Protrocetraric acid, Sekikaic acid, Umbilicaric acid	[60]