The chemical name of betaine is trimethylglycine. It can be seen that betaine is the methyl donor in the bait, and methyl is necessary for the synthesis of methionine, carnitine, creatine, phospholipid, adrenaline, RNA, DEoxyribonucleic acid and other substances with major physiological functions, which can accelerate the metabolism of amino acids and promote the feeding of fish.

Betaine is divided into compound betaine (is a good attractant concentration of 33%-98%) and anhydrous betaine (very high concentration) according to the use is divided into food grade, medical grade, feed grade, industrial grade.....  Betaine in the bait concentration is very important, dilute and do not add almost, strong fish repellent!  And in the industrial world there is an industrial betaine!  So don't use betaine unless you use it with special bait (detailed concentration and dosage).  

Compound betaine - a feed additive made by combining betaine and other additives with an appropriate carrier according to the nutritional mechanism of betaine.  Is the high concentration of betaine adsorption on the carrier, and then added to promote betaine methyl function and strengthen the nutritional role of other lure, nutritional additives compound, compound betaine can make the effect of betaine further strengthen and improve.  

Anhydrous betaine is a kind of advanced feed additive. Relative to fish culture, it has the effect of inducing food, promoting growth and improving disease resistance.  It contains more sulfur groups than ordinary betaine, with strong umami and sweet taste can stimulate the smell and taste of aquatic animals.  Body function is also a methyl donor.  Found in many algae and animals.