Table 5.
Antioxidant and antimicrobial activities of Olea europaea.
S. no. | Part/type of extract/compound | Assay | Activity | Method/reference drug | Reference |
---|---|---|---|---|---|
1 | Leaves extract | Antioxidant | High | Oxidation of soybean under microwaves | [213] |
2 | Olive leaves infusion | Antioxidant | Good | Hydroxyl and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals | [196] |
3 | Ethanolic extract of leaves | Antioxidant | High | DPPH radicals | [197] |
4 | Olive fruit | Antioxidant | Good | DPPH radicals | [199] |
5 | Volatile fractions of leaves | Antibacterial and antifungal | Moderate to high | Microwell dilution assay/DMSO | [175] |
6 | Aqueous extract of leaves | Antimicrobial | Remarkable | Paper disc diffusion method/erythromycin | [174] |
7 | Acetone extract of leaves | Antibacterial | Good | Paper disc diffusion method/oleuropein | [172] |
8 | Fruit and leaves | Antioxidant | Good | DPPH radicals | [136] |
9 | Olive pulp | Antioxidant | Excellent | Vitamin C | [211] |
10 | Alperujo (olive waste) | Antimicrobial | Good | Syringic acid | [177] |
11 | Volatiles of olive fruits | Antibacterial and antifungal | Moderate | Amphotericin, levofloxacin | [181] |
12 | Aqueous extract of leaves | Antioxidant | Good | Trolox | [208] |
13 | Leaf extract | Antioxidant | Good | DPPH radicals | [200] |
14 | Aqueous solutions from table olives | Antibacterial and antifungal | Good | Streptomycin, oxytetracycline | [178] |
15 | Leaves extract | Antioxidative stress | Moderate | MTT assay/oleuropein | [147] |
16 | Maslinic acid | Antiparasitic | Dose dependent | Phenylmethanesulfonyl fluoride | [182] |
17 | Dry extract of table olives | Antioxidant | Very good | Trolox | [204] |
18 | Acetone extract of olive leaves + oleuropein | Antibacterial | Very good | Oleuropein | [172] |
19 | Leaf extract | Antioxidant and antimicrobial | Excellent | Oleuropein | [173] |
20 | Oleuropein aglycones, 3,4-DHPEA-EA, and 3,4-DHPEA-EDA | Anti-oxidative damage to erythrocytes | Good | Hydroxytyrosol | [207] |
21 | High strength leaf extract | Antimicrobial | Excellent | — | [170] |
22 | Dhokar cultivar olives | Antioxidant | Good | DPPH radicals | [201] |
23 | Aqueous leaf extract | Antioxidant and antimicrobial | Good | DPPH radicals/streptomycin | [171] |
24 | Leaf extract | Antioxidant and antimicrobial | Dose dependent | Ascorbic acid | [171] |
25 | Phenolics released by hydrothermal treatment of olive tree pruning | Antioxidant | Good | Trolox | [205] |
26 | Leaf extract | Antioxidant | Good | Trolox | [262] |
27 | Aqueous extract of leaves | Antifungal | The best | Oleuropein | [179] |
28 | Aqueous extract of leaves | Antimicrobial | Good | — | [167] |
29 | Dialdehydic form of decarboxymethyl elenolic acid | Antimicrobial | More potent than oleuropein | Hydroxytyrosol | [168] |
30 | Leaves sprayed with copper formulations | Antioxidant | Low activity due to decrease in phenolic content | α-Tocopherol and gallic acid | [206] |
31 | Aqueous ethanolic extract | Antioxidant activity | Good | α-Tocopherol and gallic acid | [198] |
32 | Aliphatic aldehydes from olive fruit | Antifungal and antielastase | Active except Candida spp. | Miconazole | [180] |
33 | Table olives from Portugal | Antioxidant and antimicrobial | Active except Candida spp. | α-Tocopherol, TBHQ, ampicillin, and cycloheximide | [263] |
34 | Extracts of leaves, fruits, and seeds | Antioxidant | High | Trolox | [202] |
35 | Oleuropein, hydroxytyrosol, and tyrosol | Antioxidant | High | Vitamin E, BHT | [185] |
36 | Long chain α, β-unsaturated aldehydes from olive fruit | Antimicrobial | Broad spectrum activity | — | [166] |
37 | Phenolics from olive oil mill waste water | Antioxidant | Good | 2,3-Tert-butyl-4-hydroxyanisole, L-ascorbic acid | [192] |
38 | Maslinic acid | Antioxidant | Good | Silymarin | [193] |
39 | EVOO | Antioxidant | Good | Methyl linoleate | [191] |
40 | Phenolics | Antioxidant | Good | Ascorbic acid | [195] |