These are known as the citric acid cycle or Krebs cycle. It is a mystery whether this is something that life developed or if it was simply co-opted from something that did not need life to exist.

Itaconic acid (IA, Sigma-Aldrich, ≥99%), succinic acid (SA, Sigma-Aldrich, ≥99.0%), malic acid (MA, Sigma-Aldrich, 95–100%), fumaric acid (FA, Sigma-Aldrich, ≥99%), and citric acid (CA, Merck ... with ...

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Two mixtures of common food additives, including aspartame, sucralose, xanthan and guar gums, modified starches, carrageenan and citric acid, could be linked with a slightly increased ... This project ...

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Department of Fibre and Polymer Technology, Polymeric Materials Division, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 100 44 Stockholm, ...