The Mucuna pruriens bean contains 99% L-dopa.
"Mucuna pruriens is this velvety bean Mhm. that um is 99% L-dopa." (said at 1:42:15)
The claim that the Mucuna pruriens bean is 99% L-dopa is contradicted by quantitative analytical studies. Natural Mucuna pruriens seeds are whole legume beans composed primarily of protein, starch, and other phytochemicals, with a natural L-dopa content typically ranging between 2% and 6% dry weight.
- contradicts: Mucuna pruriens for Parkinson's disease: Low-cost preparation method, laboratory measures … (Journal of the neurological sciences 2016)
"Median LD concentration in dried MP seeds was 5.29%; similar results were obtained in roasted powder samples (5.3%), while boiling reduced LD content up to 70%." (abstract, results, passage verified)
pubmedfull study (doi) - contradicts: Analysis of Levodopa Content in Commercial Mucuna pruriens Products Using High-Performance… (Journal of alternative and complementary medicine (New York, N.Y.) 2018)
"Mucuna pruriens (MP) seeds contain levodopa (up to 2% by weight) and have been used in traditional Indian medicine to treat an illness named "Kampavata," now understood to be Parkinson's disease (PD)." (abstract, background, passage verified)
pubmedfull study (doi) - contradicts: Quantitative NMR analysis of L-Dopa in seeds from two varieties of Mucuna pruriens. (Phytochemical analysis : PCA 2019)
"The methods of single point qNMR and NMR calibration curve, applied to the seeds of two M. pruriens varieties, gave very similar L-Dopa contents: 3.0-3.2% and 3.0-3.1%, respectively." (abstract, results, passage verified)
pubmedfull study (doi)