Interestingly it is entirely produced from vegetable raw materials such as starch. (I suggest the readers to find more about the production and uses of MSG as given in the website of the International Starch Institute of Denmark (the least corrupt country in the world!)
Mono Sodium Glutamate has been in use in the world for at least a century now. It is a food additive approved by many nations and is classified in the European classification of food additives (the E-number) . Though there are some isolated research studies which describes some not so serious adverse effects of MSG when consumed exceeding some limits, such reports remain as incoclusive. It is an approved taste enhancer for various kinds of foods in most countries.
When the corruption perception index of India remains at a shameful level, the actions done by the Indian authorities are not likely to be viewed as something logical, reasonable or justifiable unless the authorities show the wisdom to make things more transparent and clear.
If it is not, India is not going to be a favorable destination for business and industry even when the top authorities publicly keep desiring otherwise.