Fermentation- and sugar-derived platform chemicals (lactic acid, succinic acid, 1,3-propanediol, 1,4-butanediol, bio-ethylene and bio-MEG) instead of the same building blocks made from oil and gas

Replaces: petrochemical routes to the same building blocks · Scope: polymers, solvents, food/feed acids · Evidence: high (lactic, PDO, bio-ethylene), medium (succinic, BDO economics)

The chemical problem#

• Most bulk chemicals and plastics start from naphtha or natural gas, with process emissions and hazardous intermediates (acrolein, ethylene oxide, maleic anhydride).
• Brand owners and regulators want bio-based content (EU bio-based product standards, carbon-footprint labelling), and some routes compete on cost when oil is expensive.
• The catalogue already covers what is made from these building blocks (PK04 bioplastics, I01 bio-solvents, I02 biocatalysis). This article covers the platform molecules themselves.

Product overview#

1. Lactic acid — fermentation of glucose or sucrose by lactic-acid bacteria; feedstock for PLA, lactate solvents, food acids. Fermentation is the main industrial route.
2. 1,3-Propanediol (PDO) — engineered E. coli fermentation of glucose; used in PTT fibres, cosmetics, de-icers.
3. Succinic acid — bacterial/yeast fermentation; for PBS bioplastics, polyurethanes, de-icers.
4. 1,4-Butanediol (BDO) — engineered E. coli directly from sugar; for PBT, spandex precursors, solvents.
5. Bio-ethylene and bio-MEG — dehydration of fermentation ethanol (sugarcane, molasses) → bio-polyethylene and bio-PET (MEG part).
6. Other platform molecules on the US DOE “top” list: levulinic acid, furans (FDCA), sorbitol, glycerol derivatives.

Active ingredient / Composition#

• Feedstock: cane sugar, molasses, corn/cassava starch glucose; second-generation lignocellulosic sugars (emerging).
• Production organisms: Lactobacillus/Bacillus coagulans (lactic), engineered E. coli (PDO, BDO), Actinobacillus/Basfia/yeast (succinic).
• Downstream: precipitation, electrodialysis, distillation, crystallization.

Key facts#

Advantages#

• Same molecule, so it drops straight into existing polymer and chemical plants.
• Lower fossil carbon; often fewer hazardous intermediates.
• Creates value for sugar, starch and residue streams (link to BR02).
• Fermentation plants are built in sugar- and starch-rich regions (Brazil, Thailand, India, China).

Mode of action#

• Microbes convert sugars through engineered or natural pathways (glycolysis → pyruvate → lactate; reductive TCA branch → succinate; engineered pathways → BDO).
• Ethanol dehydration over solid acid catalysts gives ethylene; oxidation and hydration give MEG.

Application#

Limitations#

• Cost: many routes are only competitive at high oil prices or with green premiums.
• Feedstock competition with food (sugar, starch) unless residues are used.
• Bio-based ≠ biodegradable: bio-PE and bio-PET are durable plastics.
• Several fermentation BDO and succinic plants were idled when oil prices fell — market risk is real.

Evidence of displacement — D2: measurable displacement (minority share)#

Assessment (hand-reviewed): Minority and conflicting: bio-succinic acid ~49% of the market in 2013/14 vs 3% in 2011; 1,3-propanediol production shared between fermentation (CovationBio, METEX) and petrochemical routes (peer-reviewed; market-research claims of ~56–60% bio-based not counted).

Verified figures (the number is in the quoted sentence and the sentence is on the source page):

• displacement — The current share of bio-based products in the EU chemical industry is estimated at around 8%. (EU, 2014; industry association: biconsortium.eu)
• displacement — In 2013–2014, approximately 38,000 tons of succinic acid was produced through the biological process, which constituted around 49% of the total market. (global, 2013-2014; peer-reviewed: link.springer.com)
• displacement — The global market for 1,3-propanediol is estimated to be between 200,000 and 300,000 tonnes per annum, with production shared between fermentation of biomass and chemocatalytic conversion of petrochemicals. (global, 2024; peer-reviewed: advanced.onlinelibrary.wiley.com)
• displacement — Bio-based PET is produced from bio-based MEG, replacing 30% of the petroleum feedstock used to produce PET with renewable feedstock. (global, 2009-2022; weak: cdn.ihsmarkit.com)

Industry pioneers — companies that commercialised this substitution#

Suppliers — real products and services (from the vendor index)#

Active vendors whose own card shows fermentation or sugar-derived platform chemicals.

Government funding signals#

Scanned 2026-10-01 (OpenAIRE + NSF); candidates reviewed by hand.

Signal: Weak (in this pass). “Lactic acid fermentation” returned mostly food lactic-acid-bacteria projects (e.g. TA ČR SQ01020132 on lactic fermentation for food-waste management), not platform-chemical production. Bio-based chemicals are funded at scale by programmes this lighter pass does not reach well (EU Circular Bio-based Europe JU, US DOE BETO, China’s synthetic-biology programmes).

Scientific evidence#

• Bozell JJ, Petersen GR (2010). Technology development for the production of biobased products from biorefinery carbohydrates—the US Department of Energy’s “Top 10” revisited. Green Chemistry 12: 539–554.
• Abdel-Rahman MA, Tashiro Y, Sonomoto K (2013). Recent advances in lactic acid production by microbial fermentation processes. Biotechnology Advances 31: 877–902.
• Straathof AJJ (2014). Transformation of biomass into commodity chemicals using enzymes or cells. Chemical Reviews 114: 1871–1908.
• Yim H, Haselbeck R, Niu W, et al. (2011). Metabolic engineering of Escherichia coli for direct production of 1,4-butanediol. Nature Chemical Biology 7: 445–452.

Bioeconomy value#

Platform chemicals are where “fermentation as the new chemical plant” (trend 5) becomes commodity-scale. Chinese and Indian producers in this index already sell at industrial volume, which makes them a sourcing base for plastics and solvent buyers.