Technology · Agri-food systems / Food & alt-protein
Vitamins (D3, B-group, ascorbic acid)
Industrial-scale vitamin manufacturing — B-group vitamins by direct fermentation, vitamin C by two-stage bioconversion of glucose, and vitamin D3 by UV photochemistry — concentrated overwhelmingly in China for bulk ascorbic acid while the EU retains unique fermentation capacity for riboflavin and stability-engineered feed premixes.
1 · What it gives
Vitamins — D3 (cholecalciferol), the B-group (riboflavin, cobalamin) and ascorbic acid (vitamin C) — are produced industrially through a mix of direct microbial fermentation, multi-stage bioconversion and UV photochemistry, feeding animal feed premixes, food fortification and pharmaceutical/dietary supplement markets. China alone accounts for over 70% of global supply of ascorbic acid, B-group vitamins and vitamin D3 precursors, having replaced the classical chemical Reichstein process with a two-stage glucose fermentation route that cut both environmental impact and production cost by roughly 40%. DSM-Firmenich continues expanding its Humiome vitamin B2 platform, launching a microbiome-targeted riboflavin product with a two-layer coating designed to deliver more than 90% of the vitamin to the colon to support gut microbiome health, alongside a November 2024 multivitamin solution targeting healthy longevity among Japanese seniors. BASF markets Lutavit A/D3 1000/200 NXT, a combined vitamin A and D3 animal-nutrition premix in a fixed 5:1 ratio suitable across pig, poultry, ruminant, aquaculture and pet species, drawing on more than 50 years of vitamin manufacturing experience spanning oily vitamin products and microencapsulated spray-dried beadlets. In China, Northeast Pharmaceutical Group — one of the world’s three leading vitamin C suppliers — reported in March 2026 that its plants were running at full capacity, with vitamin C and piracetam output up nearly 15% year-on-year in the first two months of the year and core products passing multiple international customer audits.
The key directions of vitamin manufacturing are:
- Two-stage vitamin C fermentation: bioconverting D-sorbitol to L-sorbose via Acetobacter suboxydans, then L-sorbose to 2-keto-L-gulonic acid via a symbiotic Ketogulonicigenium vulgare/Bacillus megaterium culture, replacing the classical chemical Reichstein process.
- Riboflavin (B2) fermentation: direct overproduction by the ascomycete fungus Ashbya gossypii, which naturally hyper-accumulates riboflavin as bright-yellow crystals in the culture broth.
- Cobalamin (B12) fermentation: aerobic Pseudomonas denitrificans or two-stage Propionibacterium freudenreichii fermentation requiring cobalt ion and DMB precursor supplementation.
- Vitamin D3 photochemistry: UV irradiation of 7-dehydrocholesterol extracted from lanolin (or from yeast-derived ergosterol for vegan D3), followed by thermal isomerization to cholecalciferol.
Sectoral value chain#
[Substrate/precursor sourcing (sorbitol, cholesterol, cobalt salts)] ──> [Biosynthesis/bioconversion] ──> [Downstream extraction & purification]
│
(Crystallization, microencapsulation)
│
[Animal feed premixes / food fortification / pharma & supplements] <──── [Stabilization] <─── [Compliance certification (FAMI-QS/USP/EP)]
Value chain levels#
| Level | Description | Key inputs/outputs |
|---|---|---|
| Substrate preparation | Preparing precursor substrates (D-sorbitol from glucose hydrogenation, lanolin-derived cholesterol, cobalt salts). | In: Glucose, lanolin, cobalt salts. Out: Vitamin-specific precursor feedstock. |
| Biosynthesis/bioconversion | Fermenting or photochemically converting the precursor into the target vitamin molecule. | In: Precursor feedstock, producer strain or UV source. Out: Crude vitamin-containing broth or reaction mixture. |
| Downstream extraction | Separating the vitamin from biomass/reaction byproducts via centrifugation, solvent extraction or chromatography. | In: Crude broth/mixture, extraction solvents, chromatography resins. Out: Purified vitamin concentrate. |
| Crystallization/purification | Crystallizing or further purifying the vitamin to pharmaceutical or feed-grade specification. | In: Purified concentrate, crystallization equipment. Out: Crystalline or high-purity vitamin substance. |
| Microencapsulation/stabilization | Coating the vitamin in lipid/starch matrices or antioxidant systems to protect against oxidation and heat during feed pelletizing. | In: Pure vitamin substance, coating materials, spray-chilling/fluid-bed equipment. Out: Stabilized, heat-resistant vitamin premix beadlets. |
| Compliance certification | Testing and certifying the finished product against FAMI-QS, USP, EP or BP pharmacopeial standards. | In: Stabilized product, quality-testing lab. Out: Certified vitamin product ready for feed/food/pharma distribution. |
Cross-cutting technologies of the sector:
- Two-stage vitamin C bioconversion: a symbiotic bacterial fermentation route (replacing the classical Reichstein chemical process) that converts D-sorbitol to 2-keto-L-gulonic acid, the direct precursor lactonized into ascorbic acid.
- Ashbya gossypii riboflavin overproduction: a natural fungal hyper-producer strain that accumulates vitamin B2 as visible yellow crystals directly in the fermentation broth.
- Vitamin microencapsulation: spray-chilling or fluid-bed coating technology that embeds vitamins in wax or hydrogenated-fat shells, protecting them from oxidative degradation during high-temperature feed pelletizing (up to 90°C).
2 · What it replaces 6 · matched by industry
| D3E– | Fermentation-produced vitamins (B2, B12, C routes) instead of multi-step chemical synthesis Replaces: Chemical vitamin synthesis — Reichstein process for vitamin C (six chemical steps + one fermentation), chemical B2 routes (abandoned), … | FOOD |
| D3E– | Enzymatic high-fructose syrup from starch instead of sucrose and acid hydrolysis Replaces: Cane and beet sucrose in beverages and processed foods; acid hydrolysis of starch for glucose syrup | FOOD |
| D3E– | Citric acid by Aspergillus niger fermentation instead of extraction from citrus fruit Replaces: Citric acid extracted from lemons, limes and other citrus (calcium citrate route, Italy and California before 1930) | FOOD |
| D3E– | Riboflavin (vitamin B2) by fermentation instead of multi-step chemical synthesis Replaces: Multi-step chemical synthesis of riboflavin from glucose-derived ribose and xylidine (dominant until the 1990s) | FOOD |
| D1E– | Baking enzymes (fungal amylase, maltogenic amylase, xylanase, glucose oxidase, lipase) plus ascorbic acid instead of potassium bromate and azodicarbonamide as flour treatment agents Replaces: Potassium bromate (KBrO₃) and azodicarbonamide (ADA) used as oxidizing flour improvers/dough conditioners; part of chemical emulsifier use … | FOOD |
| D3E2 | Glutamate and MSG by bacterial fermentation instead of protein hydrolysis and chemical synthesis Replaces: Hydrolysis of wheat gluten or soybean protein with hydrochloric acid (1909–1960s); acrylonitrile-based chemical synthesis (Japan, … | FOOD |
3 · How to implement 6 steps
- 1Glucose hydrogenation to D-sorbitolPurification & downstreamCrystalline D-glucose is dissolved in demineralized water and catalytically hydrogenated over a Raney nickel catalyst at 120°C, yielding liquid D-sorbitol that is purified of residual nickel ions on ion-exchange resins.Who can do this step matched automatically✓ FSSC 22000 ✓ GMP+ / FAMI-QS ✓ ISO 22000 500 m3“Development of robust, scalable fermentation and downstream processing (production and recovery/yield optimization).”Esco Aster Singapore✓ FSSC 22000 ✓ ISO 22000 5,000 L industrial scale“Adherent cell culture and downstream processing: commercialized Tide Motion bioreactor platform (MiniTide to TideXcell) with closed automated cell harvesting and single-use …”ScaleUp Bio Singapore10,000 L pilot scale“Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
- 2First bioconversion stage (sorbitol to sorbose)Synthesis & conversionThe sterilized D-sorbitol medium is fermented aerobically with Acetobacter suboxydans in a 100,000-liter fermenter, fully oxidizing sorbitol to L-sorbose over 24-30 hours at 32°C.Who can do this step matched automaticallyBBCA Group 丰原集团 Chinaindustrial scale“First-generation biomanufacturing: Fermentation-based production of organic acids, amino acids, vitamins, alcohols, and related bio-based products from starch (corn, cassava) using …”✓ GMP+ / FAMI-QS industrial scale“Biocatalytic enzymes: straw processing, biodiesel, pharmaceutical intermediates, seaweed processing, plant extraction”
- 3Second bioconversion stage (sorbose to 2-KLG)Fermentation & cultivationSynthesis & conversionThe L-sorbose solution is transferred to a second fermenter and inoculated with the Ketogulonicigenium vulgare/Bacillus megaterium symbiotic culture; controlled fermentation (pH held at 6.5-7.0 with soda) over 48-60 hours precipitates the sodium salt of 2-keto-L-gulonic acid.Who can do this step matched automaticallyCABIO 嘉必优 (SSE 688089) China✓ FSSC 22000 600 tons“生产与产业化：与合作伙伴（如中科院、美国嘉吉等）共同推进发酵法多不饱和脂肪酸的产业化、建立微生物油脂工厂、实现国内外市场布局。”✓ FSSC 22000 ✓ GMP+ / FAMI-QS ✓ ISO 22000 500 m3“Technology: microbial fermentation with ~500 m3 fermentation capacity; 15+ patents; developed/upscaled probiotic production technologies.”Zhejiang NHU Company China✓ GMP+ / FAMI-QS ✓ ISO 22000 industrial scale“(NHU; SZSE: 002001) is a functional chemicals company producing nutrition ingredients (vitamins, amino acids, carotenoids), aroma chemicals, polymer/new materials (including PPS), …”
- 4Filtration, acidification and lactonizationPurification & downstreamCells are separated by disc centrifugation or ultrafiltration; the 2-KLG sodium salt solution is acidified with hydrochloric acid to precipitate free 2-KLG, which undergoes acid-catalyzed lactonization at 80°C to form crude ascorbic acid.Who can do this step matched automatically✓ FSSC 22000 ✓ GMP+ / FAMI-QS ✓ ISO 22000 500 m3“Development of robust, scalable fermentation and downstream processing (production and recovery/yield optimization).”Esco Aster Singapore✓ FSSC 22000 ✓ ISO 22000 5,000 L industrial scale“Adherent cell culture and downstream processing: commercialized Tide Motion bioreactor platform (MiniTide to TideXcell) with closed automated cell harvesting and single-use …”ScaleUp Bio Singapore10,000 L pilot scale“Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
- 5Purification, decolorization and crystallizationPurification & downstreamThe crude ascorbic acid solution passes through activated carbon for decolorization, followed by ion-exchange desalting on anionic and cationic resin columns, then vacuum evaporation and crystallization at 15°C.Who can do this step matched automatically✓ FSSC 22000 ✓ GMP+ / FAMI-QS ✓ ISO 22000 500 m3“Development of robust, scalable fermentation and downstream processing (production and recovery/yield optimization).”Esco Aster Singapore✓ FSSC 22000 ✓ ISO 22000 5,000 L industrial scale“Adherent cell culture and downstream processing: commercialized Tide Motion bioreactor platform (MiniTide to TideXcell) with closed automated cell harvesting and single-use …”ScaleUp Bio Singapore10,000 L pilot scale“Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
- 6Centrifugation, vacuum drying and packagingPurification & downstreamPackaging & fill-finishWhite ascorbic acid crystals are separated by centrifuge, dried in a vacuum paddle dryer at 55°C to below 0.1% moisture, then screened and packed into cardboard drums with aluminum liners.Who can do this step matched automatically✓ FSSC 22000 ✓ GMP+ / FAMI-QS ✓ ISO 22000 500 m3“Development of robust, scalable fermentation and downstream processing (production and recovery/yield optimization).”Esco Aster Singapore✓ FSSC 22000 ✓ ISO 22000 5,000 L industrial scale“Adherent cell culture and downstream processing: commercialized Tide Motion bioreactor platform (MiniTide to TideXcell) with closed automated cell harvesting and single-use …”ScaleUp Bio Singapore10,000 L pilot scale“Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
4 · Who delivers
Matched suppliers (matched automatically)
| Zhejiang NHU Company | China | Research / RTO | active |
| dsm-firmenich | Switzerland | Producer | active |
| BBCA Group 丰原集团 | China | Research / RTO | active |
| CABIO 嘉必优 (SSE 688089) | China | Producer | active |
In the services and supply catalogue 2 · paid service
Upstream — fermentation & cell culture · Contract manufacturing (CMO/CDMO/toll)
Leading companies and institutes (from the brief)
| Company / Institute | Country | Key products / platforms | Tech features | Status 2026 |
|---|---|---|---|---|
| DSM-Firmenich | 🇨🇭 Switzerland | Humiome B2, multivitamin solutions | Colon-targeted riboflavin delivery (2024-2025) | commercial |
| BASF | 🇩🇪 Germany | Lutavit A/D3 premix | Combined vitamin A/D3 premix, 50+ years experience | commercial |
| Zhejiang NHU | 🇨🇳 China | Feed-grade vitamins A, E, D3, B-group | Large-scale fermentation infrastructure | commercial |
| Northeast Pharmaceutical | 🇨🇳 China | Vitamin C, piracetam | World top-3 vitamin C supplier, full capacity (2026) | commercial |
5 · Rules & route to market
Route into Russia / EAEU: FOOD · Rospotrebnadzor / EAEU
declaration of conformity, or SGR within 30 calendar days for new/specialized ingredients (plus tests)
Information, not legal advice — confirm the procedure for your product. (2026-10-06)
declaration of conformity, or SGR within 30 calendar days for new/specialized ingredients (plus tests)
Information, not legal advice — confirm the procedure for your product. (2026-10-06)
United States
The United States is the world’s largest consumer market for vitamin supplements and premixes, with FDA cGMP oversight anchoring quality while domestic biotech innovation targets next-generation fermentation routes.
Vegan D3 market growth, precision fermentation R&D, FDA cGMP oversight#
- Vegan D3 market growth: the US market for vegan vitamin D3 — sourced from UV-irradiated lichen or specialized ergosterol-synthesizing yeast strains — continues displacing traditional lanolin-derived animal D3, reflecting broader plant-based consumer demand.
- Precision fermentation R&D: American biotech developers are pursuing cell-free and microbial platforms to synthesize costly B-group vitamins (particularly B12) directly from methane or carbon dioxide feedstocks, an area attracting venture capital investment.
- FDA cGMP oversight: the FDA maintains strict cGMP compliance requirements for dietary supplement vitamin substances, routinely auditing imported raw materials for residual solvents and heavy metals.
European Union
The European Union leads in high-stability, protected vitamin formulations for premium animal feed premixes, retaining unique fermentation capacity for riboflavin production independent of Asian supply.
DSM-Firmenich’s Humiome B2 platform, BASF’s Lutavit premix portfolio, EFSA thermal-stability standards#
- DSM-Firmenich: continues expanding its Humiome vitamin B2 platform, launching a microbiome-targeted riboflavin product with a two-layer coating designed to deliver more than 90% of the vitamin to the colon to support gut microbiome health, alongside a November 2024 multivitamin solution targeting healthy longevity among Japanese seniors.
- BASF: markets Lutavit A/D3 1000/200 NXT, a combined vitamin A and D3 animal-nutrition premix in a fixed 5:1 ratio suitable across pig, poultry, ruminant, aquaculture and pet species, drawing on more than 50 years of vitamin manufacturing experience spanning oily products and microencapsulated spray-dried beadlets.
- EFSA thermal-stability standards: the EU’s food safety authority applies rigorous scrutiny to vitamin stability under feed-pelletizing heat conditions (up to 90°C), driving European producers to develop lipid-starch matrix microencapsulation technology, while Germany and Switzerland retain unique fermentation capacity for riboflavin production based on Ashbya gossypii, ensuring the European market’s independence from Asian B2 supply.
China
China is the unrivaled global hegemon of vitamin production, supplying over 70% of world demand for ascorbic acid, B-group vitamins and vitamin D3 precursors through mega-scale fermentation infrastructure.
Northeast Pharmaceutical’s vitamin C leadership, Zhejiang NHU’s feed-vitamin scale, two-stage fermentation dominance#
- Northeast Pharmaceutical Group: one of the world’s three leading vitamin C suppliers, reported in March 2026 that its plants were running at full capacity, with vitamin C and piracetam output up nearly 15% year-on-year in the first two months of the year and core products passing multiple international customer audits.
- Zhejiang NHU: a major producer of feed-grade vitamins A, E and D3 alongside B-group vitamins, operating large-scale fermentation infrastructure concentrated in China’s vitamin-manufacturing heartland provinces.
- Two-stage fermentation dominance: Chinese producers’ two-stage glucose fermentation route for vitamin C has fully displaced the classical chemical Reichstein process, cutting both environmental impact and production cost by roughly 40%, while government-mandated environmental modernization is pushing producers toward closed-loop water systems and fully fermentative B12 synthesis routes that eliminate toxic cyanide-based intermediates.
6 · Money: tenders & grants
| Grant | Capacity Building Grants for Non-Land-Grant Colleges of Agriculture Program National Institute of Food and Agriculture · United States | Nov 10, 2026 25 days |
| Grant | Capacity building for extending product lifecycles through repair and refurbishment European Commission · EU | Sep 22, 2027 341 days |
| Grant | Improve the capacity to monitor and reduce air pollution from agriculture European Commission · EU | Sep 22, 2027 341 days |
| Grant | Improving analytical capacity for sustainable competitiveness of the agricultural sector European Commission · EU | May 11, 2027 207 days |
| Grant | Open topic: Using the Circular Cities and Regions Initiative to strengthen urban manufacturing in support of … European Commission · EU | Apr 8, 2027 174 days |
7 · Tech stack & innovations
The vitamin manufacturing stack combines classical fermentation biology, immobilized-cell biotransformation and selective physicochemical separation methods:
- Vitamin B2 (riboflavin) production:
- The ascomycete fungus Ashbya gossypii is a natural hyper-producer of riboflavin, overexpressing key enzymes of the purine and ribulose-5-phosphate synthesis pathway; riboflavin accumulates in the cytoplasm and is released into the culture broth as bright-yellow crystals.
- Vitamin B12 (cobalamin) production:
- Pseudomonas denitrificans (aerobic process) or Propionibacterium freudenreichii (two-stage process combining anaerobic precursor synthesis with aerobic side-chain attachment) require cobalt ions and 5,6-dimethylbenzimidazole (DMB) precursor supplementation in the fermentation medium.
- Vitamin C (L-ascorbic acid) two-stage bioconversion:
- Stage one oxidizes D-sorbitol into L-sorbose via Acetobacter suboxydans; stage two oxidizes L-sorbose into 2-keto-L-gulonic acid (2-KLG) via a symbiotic culture of Ketogulonicigenium vulgare and Bacillus megaterium, where B. megaterium supplies purines and growth factors to K. vulgare; the final chemical step lactonizes and esterifies 2-KLG under heat and hydrochloric acid to form L-ascorbic acid.
- Vitamin D3 (cholecalciferol) photochemistry:
- Provitamin 7-dehydrocholesterol is extracted from lanolin, then photochemically ring-opened under UV irradiation (290-310 nm wavelength, excimer lamps) followed by thermal isomerization into cholecalciferol.
Sources 4 · 0 independent · 4 producer sites
Producers' own sites 4
- Dsm firmenich producer checked 2026-03-25 · link not kept
- Basf producer checked 2025-10-18 · link not kept
- Zhejiang nhu producer checked 2026-07-05 · link not kept
- Northeast pharmaceutical producer checked 2026-07-05 · link not kept