비타민 C(아스코르브산) 공업 합성

포도당에서 세계에서 가장 많이 소비되는 비타민으로

Food Processing & Preservation Global Industrial Scale $1.2 billion

개요

Vitamin C (L-ascorbic acid) is manufactured through the Reichstein process or its modern two-step fermentation variant, converting D-glucose into L-ascorbic acid via D-sorbitol. China produces over 80% of the world's supply. The original Reichstein process (1934) involves one fermentation step and multiple chemical steps, while the modern two-fermentation process replaces several chemical steps with a second microbial conversion, reducing waste and cost. Vitamin C is used as a food additive (antioxidant E300), dietary supplement, and pharmaceutical excipient.

화학 공정

D-Glucose is catalytically hydrogenated to D-sorbitol using Raney nickel. D-Sorbitol is fermented by Gluconobacter oxydans to L-sorbose. In the Reichstein process, L-sorbose is converted to 2-keto-L-gulonic acid (2-KGA) via diacetone-sorbose protection and oxidation. In the modern process, a second fermentation with Ketogulonicigenium vulgare converts L-sorbose to 2-KGA directly. 2-KGA is lactonized with HCl to yield L-ascorbic acid.

D-Glucose + H₂ →[Ni] D-Sorbitol
D-Sorbitol →[G. oxydans] L-Sorbose
L-Sorbose →[K. vulgare] 2-Keto-L-gulonic acid
2-KGA →[HCl, heat] L-Ascorbic acid + H₂O

원자재

  • D-Glucose (C₆H₁₂O₆) — Corn starch hydrolysis (Starting material)
  • Hydrogen gas (H₂) — Steam methane reforming (Reducing agent (for sorbitol))
  • Gluconobacter oxydans — Culture collection (Fermentation organism (step 1))

최종 제품

  • L-Ascorbic acid (C₆H₈O₆) — Vitamin supplement, food antioxidant (E300), pharmaceutical (USP/EP/FCC grade, >99% purity)
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Environmental Impact

The Reichstein process uses acetone for protection steps, generating significant organic solvent waste. The two-fermentation route reduces chemical waste by approximately 40%. Raney nickel catalyst requires careful handling and regeneration. Chinese production dominance has raised concerns about environmental standards in manufacturing.

안전 고려사항

최근 혁신

One-step fermentation processes using engineered microorganisms to convert glucose directly to 2-KGA or ascorbic acid are in development.
Electrochemical oxidation methods offer an alternative to biological oxidation steps with better controllability.

생산 규모

200000

톤/년

$1.2 billion

시장 가치

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Frequently Asked Questions

What industry uses 비타민 C(아스코르브산) 공업 합성?
비타민 C(아스코르브산) 공업 합성 is used in the food processing & preservation sector at global industrial scale scale.
What process is involved in 비타민 C(아스코르브산) 공업 합성?
D-Glucose is catalytically hydrogenated to D-sorbitol using Raney nickel. D-Sorbitol is fermented by Gluconobacter oxydans to L-sorbose. In the Reichstein process, L-sorbose is converted to 2-keto-L-gulonic acid (2-KGA) via diacetone-sorbose protection and oxidation. In the modern process, a second
What is the economic significance of 비타민 C(아스코르브산) 공업 합성?
비타민 C(아스코르브산) 공업 합성 has a market value of $1.2 billion and annual production of 200,000 tons.
What is the environmental impact of 비타민 C(아스코르브산) 공업 합성?
The Reichstein process uses acetone for protection steps, generating significant organic solvent waste. The two-fermentation route reduces chemical waste by approximately 40%. Raney nickel catalyst requires careful handling and regeneration. Chinese production dominance has raised concerns about env
What raw materials are used in 비타민 C(아스코르브산) 공업 합성?
The main raw materials include: D-Glucose (C₆H₁₂O₆), Hydrogen gas (H₂), Gluconobacter oxydans.