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Magnesium Citrate is used as buffering agent, dough conditioner, yeast food, nutritional supplement, firming agent, antioxidant synergist, antioxidant, fruit & vegetable color protecting agent and flavoring agent.Magnesium citrate, as a supplement in pill form, is useful for the prevention of kidney stones.

1)In food, pharmaceutical, and daily chemical industries, it is used as additives.
2)Packing: In 25kg composite plastic woven/ paper bag with PE liner
3)Storage and transport: It should be stored in a dry and ventilative warehouse and kept away from moisture and toxins. Handled with care, so as to avoid damage to the packing bags.
http://www.chinafooding.com/Magnesium_Citrate

Lactic Acid use in the food industry:

1. Lactic Acid has a strong preservative effect, Lactic Acid can be used in wine, beverage, meat, food, pastry making, pickling and canning vegetables, food processing, fruit storage, Lactic Acid is capable of regulating pH, bacteria and prolong shelf life, flavor, keeping food color, improve product quality and so on.
2. Lactic Acid in the seasoning, the lactic acid can increase the food a unique sour taste in the salad, soy sauce, vinegar and spices to add a certain amount of E270, Lactic Acid can maintain the stability of the microbial products , security, and to make the taste more mild.
3. Because Lactic Acid moderate moderate acidity, but also as well the deployment of soft drinks and fruit juice of choice sour agent.
4. in brewing beer, add some Lactic Acid to adjust the pH to promote both glycosylated, is conducive to yeast fermentation, improve the quality of beer, beer can add flavor, extend shelf life. Lactic Acid in white wine, sake and wine used to adjust pH, to prevent bacteria growth, enhance the acidity and refreshing taste. Buffered E270 can be applied to hard candy, fruit candy and other confectionery products, moderate acidity and sugar conversion rate. Lactic Acid pink can be used on all kinds of candy powder, sour agent as a powder.
5. Natural Lactic Acid is naturally inherent in the dairy ingredients, Lactic Acid has the taste of dairy products and a good anti-microbial effect has been widely used for deployment of yogurt cheese, ice cream and other foods, Lactic Acid as much popular dairy sour agent.
6. Lactic Acid powder is used for the direct production of shallots sour regulator. Lactic Acid is a natural fermentation acids, so you can make bread with a unique taste; lactic acid as a natural acidity regulator, Lactic Acid in bread, cakes, biscuits and other baked goods for flavoring and antimicrobial effect, and can improve the quality of food, to maintain color and prolong shelf life.
http://www.chinafooding.com/Lactic_Acid

It is produced through a natural process – fermentation, then followed by neutralization and crystallization process.

Here are 4 authority resources mentioned the manufacturing process, respectively from Wikipedia, EFSA, a China big manufacturer and Ajinomoto.

Let’s see one by one.

1. Wikipedia
Generally, MSG is now industrially produced by the fermentation of starch and sugar, such as corn starch and tapioca starch instead of extracting and crystallizing from seaweed by a Japanese scientist in 1908 when it was first made. (1)

2. EFSA
There are two bacterial approved for the fermentation of L-glutamic acid, one is corynebacterium glutamicum from strain 2256; another is a new one, from the genetically modified strain of C. glutamicum (i.e. strain EA-12).

In both processes, glutamic acid is produced by fed-batch fermentation using carbon sources of vegetal origin (sucrose), nitrogen sources, salts and vitamins. (2)

3. A China Big Manufacturer
Starting from the fermentation of glucose, using corynebacterium glutamicum to produce glutamic acid then neutralize with sodium carbonate. The subsequent steps are decolorization, filtration, crystallization, centrifuge, drying and so on.

4. Ajinomoto
Ajinomoto said their brand MSG AJI-NO-MOTO® produced in Brazil is through the fermentation of sugarcane molasses and here with the detailed flow chart. (3)

msg manufacturing process

Specification
Structure
msg chemical structure
Image Source

Other names
Monosodium L-glutamate
L-glutamic acid, sodium salt
Appearance A white, practically odorless crystalline granular or powder.
CAS number 6106-04-03 (monohydrate)
Chemical formula C5H8NaNO4.H2O
Molecular weight 187.13
Melting Point 232 °C (450 °F; 505 K)
Solubility
Freely soluble in water with the solubility 740 g/L in water. It dissociates into glutamate and sodium ions.
Practically insoluble in ethanol or ether.
Stability Stable in high temperatures and in the presence of light. Around 0.6% of MSG will decompose when heated its 10% solution in 100ºC for 3 hours in PH 6.9. It will lose the combined crystallization water when heated to 120ºC.
http://www.chinafooding.com/Monosodium_Glutamate-MSG

DL-Malic Acid is a sour agent as a food, especially suitable for jelly and fruit-based foods, E296 has the role to maintain the natural color of juice, E296 has anti-fatigue and enhance the liver, kidney, heart function, can be used health drink. DL-Malic Acid can enhance digestion and reduce harmful cholesterol, DL-Malic Acid to maintain normal blood pressure, blood sugar levels, also make the skin whitening, keep the skin smooth and moist, E296 is a new ideal health food or drug additives. E296 as a white or nearly white crystalline powder or granules, sour soft, non-irritating smell.


DL-Malic Acid food:
DL-Malic Acid apple juice in 1785 by Carl Wilhelm Scheele first isolated. Antoine Lavoisier in 1787 that it was from the Latin word for apple, mālum derived the name of the acide malique. DL-Malic Acid, green apple acidity. DL-Malic Acid is present in the grapes. E296 gives tart taste of wine, although the increase of fruit maturity and reduced. E296-lactic acid fermentation process to convert E296 lactic acid much more moderate.
http://www.chinafooding.com/DL-Malic_Acid

Because Citric acid monohydrate moderate, brisk acidity, generally used for a variety of beverages, soft drinks, wine, candy, snacks, biscuits, canned fruit juices, dairy and other food manufacturing. In all organic market, E472c more than 70% market share, until now, no one can replace Citric acid monohydrate of the sour agent. Part of crystal water is mainly used for soft drinks, juices, jams, canned fruit sugar and acid flavor, E472c also be used as edible oil anti-oxidants. While improving the sensory properties of food, appetite and promote the calcium and phosphorus absorption material. Citric acid monohydrate used extensively for solid drink. Citric acid monohydrate salts such as calcium citrate and ferric citrate are certain foods you need to add calcium and iron ions enhancer. E472c E472c three ethyl esters as plasticizers can be used for non-toxic, food packaging, plastic film, E472c the beverage and food industry, sour agents, preservatives.

In the medical industry, Citric acid monohydrate is a lot of drugs, such as citric acid piperazine (lumbricide), ferric ammonium citrate (blood), sodium citrate (blood transfusion pharmaceutical) materials. In addition, Citric acid monohydrate also be used as acidifier in many medicines;

In the chemical industry, Citric acid monohydrate citric acid ester plasticizer can use non-toxic, the food packaging plastic film;

In other areas, Citric acid monohydrate detergent used in industrial and civil pollution-free detergent builder; Citric acid monohydrate for concrete retarder; also widely used in electroplating, leather, printing inks, printing industry, blue and so on.
http://www.chinafooding.com/Citric_acid_monohydrate