| PSM isolates | Organic acids | References |
| Bacillus sp. | Citric acid, malic acid, succinic acid, fumaric acid, tartaric acid, gluconic acid | [23] | Pseudomonas | Citric acid, succinic acid, fumaric acid, gluconic acid, 2-ketogluconic acids | [3, 23] | Proteus sp. | Citric acid, succinic acid, fumaric acid, gluconic acid | [23] | Aspergillus | Citric acid, gluconic acid, oxalic acid, succinic acid, malic acid, glycolic acid | [29] | Azospirillum sp. | Citric acid, succinic acid, fumaric acid, gluconic acid | [23] | Penicillium sp. | Gluconic acid, glycolic acid, succinic acid, malic acid, oxalic acid, citric acid | [29] | Erwinia herbicola | Gluconic acid, 2-ketogluconic acids | [3] | Thermotolerant acetic acid | Acetobacter, Gluconobacter | [3] |
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