Currently many companies, especially from India, are marketing herbal methionine. How does it work and what are its sources. Some scientists from south india have even published papers on the same topic.
Herbal products have little or no benefit when added to methionine-deficient diets for organic broiler chickens.
WITH the recent reduction in allowable levels of supplemental sources of methionine in organic poultry feeds, producers are searching for organic feed ingredients that might be rich sources of this essential amino acid.
The present regulations allow for the addition of 2 lb. per ton of supplemental methionine in diets for broilers and layers and 3 lb. per ton in diets for turkeys. In diets based on soybean meal, this often means that the overall protein content of the diet must be increased to meet the birds’ needs for methionine and total sulfur amino acids.
Few plant-based protein sources are also rich natural sources of methionine.
Please find some article in more details
I agree; herbal products are not reliable substitutes for methionine. Plant proteins (including tuber proteins) are low in L-methionine and L-lysine. A typical example is soy protein.
Dear Mr Neeraj I am wondered about the papers published on Herb Methionine. Firstly they are all company sponsored so I doubt their results. Secondly they don't mention the %age of methionine in their products and if they mention, it doesn't exceed 1%. How you expect 1% replacing 100% DL methionine. Thirdly the sources used for methionine have very less methionine so if the same is concentrated after processing would me more costly than DL methionine. Agony is that we formulate poultry feed from soya, maize etc and say methionine being limiting acid in them should be supplemented externally and people are using same soya and claiming it to be herbal methionine!!
Dear Ishfaq
For that you have to quantify the methoinine content either using HPTLC or HPLC in particular sample. As we all know one is pure compound (methionine) and another is mixture of compounds (herbal), so how can one substitue other. There is lack of such studies, which should be performed in acedemic research.
Obviously HPLC is used to quantify the amino acids. I agree with you, herbal can't be substitute for DL methionine but the same is falsely promoted in scientific community. A protein rich herb cannot have higher protein than Cake or cereals. If people say we will provide herbal methionine from herbs, how will they increase its methionine content when per se it is low. Also herbs have mixture of anti nutritional factors like protein inhibitors, trypsin inhibitors, non protein amino acids which all contribute to its low performance, while the people claim it being better than DL methionine or at par with it.
Exactly,, these publication is just making the brand value of company and for promotion purpose only. There is urgent need of involvement of acedemic institution to takecare of research on such related issue. Although some company purified herbal methionine to some exetent by some purification steps, but they dont describe it due to risk of copying.
Dear Neeraj K. Sethiya , Can you name company that purified herbal methionine?
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