- Ascorbic acid is a
sugar acid with antioxidant properties. Its appearance is white to
light-yellow crystals or powder and it is water-soluble. The
L-enantiomer of ascorbic acid is commonly known as vitamin C.
- Ascorbic acid is
known for its antioxidant properties. It is a molecular bond of carbon,
hydrogen, and oxygen.
- Ascorbic acid is the
water soluble form of vitamin C. It is considered a potent antioxidant
and studies suggest that this nutrient may assist in the prevention of
early death from heart disease and cancer. Ascorbic acid was originally
revered for its anti-scurvy properties, but the focus on this supplement
today is more on its potential ability to protect cells.
- Ascorbic acid
strengthens the capillaries and cell walls and is an essential component
of collagen formation. It functions in protein synthesis by changing the
charge of iron so that it can be absorbed and works as an antioxidant.
- Ascorbic acid is
known to be a vitamin sensible to a number of factors, including pH,
moisture content, oxygen, temperature and light.
- The biosensor based
on carbon paste modified with crude extract of zucchini (Cucurbita pepo)
for determining L-ascorbic acid in pharmaceutical formulations is
stable, selective, sensitive, simple and low cost.
- L-Ascorbic acid is
conventionally synthesized by a variety of known methods, which are
generally variations of the Reichstein process. These are mostly
relatively complex chemical processes that utilize glucose as a starting
material.
- The synthesis of
L-ascorbic acid from D-glucose (Glc) proceeds via glucuronic acid and
L-gulono-1,4-lactone (Gul) in animals, in plants the Glc is epimerized
to Dmannose and then to L-galactose, and finally L-galactono-1,4-
lactone (Gal) is converted into the vitamin.
- Ascorbic acid is
easily oxidized and so is used as a reductant in photographic developer
solutions and as a preservative.
- Ascorbic acid and
its sodium, potassium, and calcium salts are commonly used as
antioxidant food additives. These compounds are water-soluble and thus
cannot protect fats from oxidation.
- L-Ascorbic acid
(Vitamin C), an anti-oxidant and free radical scavenger, is found
ubiquitously in fruit and vegetables such as citrus fruits (oranges,
lemons, limes, tangerines etc), melons, tomatoes, peppers, broccoli,
green leafy vegetables such as spinach, potatoes and turnips. Its
quantitative determination is especially important in the production of
wine, beer, milk, soft drinks and fruit juices, where it can be a
quality indicator.
- The ascorbic acid
essential role played in the human diet, L-ascorbic acid (E300) and salt
derivatives (E301-303) are commonly used as food additives, with the
additional advantage of their antioxidant and flavour enhancing
properties. In the wine industry, L-ascorbic acid can be added to
prevent oxidation of wine.
- Demand for Vitamin C
in the world went on increasing, first at a slow rate, and then at a
high rate - upto 10% per year. The present world demand for Vitamin C is
about 70,000 Tonnes per year. In India, present demand for Vitamin C is
of the order of 1,100 Tonnes per year.
- The Indian
manufacturers are operating at an overall efficiency of conversion of
sorbitol to Vitamin C in the range of 44% to 48% which is only slightly
lower than the world standard of 51%. However, their utility
consumptions are on the higher side and the fixed cost is high dueto
lower production capacity.
- The demand for
Vitamin C in the world is increasing at about 27 per year. This rale may
not increase, unless new therapeutic or other
applications of Vitamic
C are invented. The manufacturing plants in the world, have excess
capacity over the present demand.
- The actual
production of Vitamin C in the past years was about 650 tonnes. The
formulators of Vitamin C, were not getting the required quantity of
Vitamin C, as the production was low. Moreover, manufacturers of Vitamin
C were diverting their production to food grade Vitamin C.
- The global market
for isoascorbic acid, ascorbic acid and citric acid is expected to reach
$1.7 billion in 2007.
- Prices of citric
acid and of ascorbic acid are very close, or even below estimated
production costs. This is a result of a downward spiral started with the
market entry of Chinese producers offering these products at well below
market prices. Chinese producers currently have a market share of 37 per
cent in isoascorbic acid, 65 per cent in ascorbic acid and 34 per cent
in citric acid.
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Introduction
- L - Ascorbic
Acid
- L Ascorbic Acid
Benefits and Information
- Vitamin C
(L-Ascorbic Acid) - The Heroic Antioxidant
- What is Ascorbic
Acid?
- Ascorbic
acid
Properties
- Crystal Habit
Modi cation of Vitamin C (L-Ascorbic Acid) due to Solvent E
ects
- Effect of
supplemental dietary L-Ascorbic Acid on mercury detoxication,
physiological aspects and growth performance of nile tilapia
- The physiological
properties of Ascorbic Acid
- The preparation and
properties of highly purified ascorbic acid oxidase
- Protective action of
an anti-oxidant (L-Ascorbic acid) against genotoxicity
and
cytotoxicity in mice during p-DAB-induced
hepatocarcinogenesis
- Effect of Ascorbic
Acid on the Rheological Properties of Wheat Fermented Dough
Functions
- Synthesis of New
L-Ascorbic Ferulic Acid Hybrids
- The Biosynthesis of
L-Ascorbic Acid in animals
- Microencapsulation of Ascorbic acid in maltodextrin and
capsule using spary -drying
- The chemistry of
L-Ascorbic Acid derivatives in the asymmetric synthesis of C2- and C3 -
Substituted Aldono - gamma-lactones
- Synthesis of
L-ascorbic acid in the phloem
- L-Ascorbic Acid
Status Of Pregnant Women And Its Potential Role In Pregnancy-Induced
Stress
- Synergic
Interaction between Ascorbic Acid and Antibiotics against Pseudomonas
aeruginosa
- Synthesis of
L-Ascorbic Acid Derivative Including 3-Aminopropane Phosphoric Acid as a
Novel Whitening Agent
- In vivo effect of
L-ascorbic acid on benzo(α)pyrene metabolite-DNA adduct formation in rat
liver
MSDS
- L-Ascorbic Acid
99%
- L-Ascorbic
acid
- Ascorbic Acid
Injection
- L-Ascorbic Acid
Kit
- Vitamin C
- Nano-Microbial
- Ascorbic Acid
Powder
- Safety data for
ascorbic acid
- Ascorbic acid
MSDS
- L-Ascorbic Acid
MSDS
Products
- Citrix
Cream
- 3-o-ethylascorbic Acid
- Vitamin C Anti -
Ageing Serum
- World's Finest
Vitamin C
- Metabolic Products
of L-Ascorbic Acid
- L-Ascorbic
Acid Powder -
powdered Vitamin C
- Veta -
Acidifier
Patent
- L-ascorbic acid
2-phosphate zinc salt and process for manufacturing the same
- L-Ascorbic
Acid containing biomass of chlorella pyrenoidosa
- Manufacture of
L-Ascorbic Acid and D-Erythorbic Acid
- L-Ascorbic Acid
Production in Microorganisms
- Microbial Process
for the production of Ascorbic Acid using chlorella Protethecoides
- Process for
producing ascorbic acid
- Stable L-Ascorbic
Acid Compositions
- Synthesis of
Ascorbic Acid from Lactose
Technology
- New technology for
vitamin C production may end Chinese monopoly
- Quantitative
Analysis of Calcium Ascorbate content in Vitamin C using Analytical
Spectral Devices’ LabSpec Pro® NIR Analyzer
- The Combination of
Ascorbic Acid Derivatives/Iron Salts as Catalyst for the Oxidative
Drying of Alkyd-based Paints:
A Biomimetic Approach
- Prediction and
Determination of Ascorbic Acid Content During Pineapple Drying
- Development of
Agglomerated Crystals of Ascorbic Acid by the Spherical Crystallization
Technique
- Ascorbic Acid /
Vitamin C Technology
Projects
- Analysis of Ascorbic
Acid in Single Human Neutrophils by Electrochemical Detection
- Urinary ascorbic
acid excretion in the human as affected by dietary fiber and
zinc
- Antioxidant
Vitamin
- How to measure Total
Phosphorus: Ascorbic Acid Method
- The Effect of
Temperature on the Decay of Ascorbic Acid
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Production and Estimation Process
- L-Ascorbic
Acid Biosynthesis in Ochromonas danica
- Ascorbic acid
degradation during convective drying of persimmons with fixed
temperature inside the fruit
- L-Ascorbic Acid
Determination in Pharmaceutical Formulations
- The effect of
manufacturing methods of the ascorbic acid content and consistency
characteristics of tomato juice
- A Note on the
Estimation of Dehydro-L-Ascorbic Acid in Plant Tissues by the Roe &
Kuether Procedure
- Determination of
L-ascorbic acid in fruit juice samples
- Vitamin C (ascorbic
acid) HPLC
- Study of Polymorph
Prediction For L-Ascorbic Acid
- L-Ascorbic Acid -
Assay Procedure
- Production of
L-Ascorbic Acid by Metabolically Engineered
Saccharomyces cerevisiae
and Zygosaccharomyces bailii
- Ascorbic acid
biosynthesis: a precursor study on plants
- The determination
of dehydroascorbic acid and ascorbic acid in plant tissues by the
2,4-dinitrophenylhydrazine mett-tod
Market
- Bringing Effective
Antioxidant-containing Products to Market
-
- Market
Update
- Vitamin C Content of
Market Milk, Evaporated Milk, and Powdered Whole Milk
- Demand
- Ascorbic acid:
tougher competition for EU
Company
Profiles
- Company in South
Africa
- Company in
Japan
- Company in
Taiwan
- Company in
Florida
- Company in
Israel
- Company in New
York
Suppliers and
Buyers
- Ascorbic acid
suppliers
- Chinese
Suppliers
- Ascorbic Acid
Selling Leads
- L-Ascorbic Acid
Products
- L-Ascorbic Acid
Suppliers
- Suppliers of
L-Ascorbic Acid
- Buyers List -
1
- Buyers List -
2
Uses
- Ascorbic Acid in the
Prevention and Treatment of Cancer
- Use of L-
Ascorbic Acid, Ethocel Coated Ascorbic Acid and Ascorbate 2-Sulfate in
Diets for Channel Catfish, Ictalurus punctatus
- Vitamin C
Uses
- Ascorbic Acid
Applications
- Essential Role of
Ascorbic acid in neutral differentiation and development
- Use of Topical
Ascorbic Acid and Its Effects on Photodamaged Skin Topography
Consultants
- Consultant in
Alberta
- Consultant in
UK
- Ascorbic Acid Experts
- Consultant in New
York
- Consultant in
California
Safety
Issues
- Vitamin C (ascorbic
acid)
- Ascorbic Acid
(Vitamin C) - Deficiencies
- Ascorbic acid
Effects
- A Report
Reports
- Carcinogenesis
Bioassay of L - Ascorbic Acid
- Report of the Food
Safety Authority of Ireland Survey on Fruit Juices
- Identification of
L-Ascorbic Acid in Secretion Granules of the Rat Parotid
Gland
- Opinion of the
Scientific Panel on Food Additives, Flavourings, Processing Aids and
Materials in Contact with Food
- ELCO ascorbic
acid
- Changes of Ascorbic
Acid Contents in Various Market Forms of Spinach (Spinacea oleracea L.)
during Postharvest Storage in Light and Dark Conditions
- Groupe-Polyphenols Conference: Travel
to Germany and
France
- Ascorbic Acid
Utilization by Women
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