How to identify REAL Grape Seed Extract
This method can be used to identify whether the grape seed extract is mixed with pine bark extract or peanut extract, as follows,
1, the establishment of grape seed extract, pine
bark extract and peanut extract of fingerprints;
2,The characteristic peaks PS1 and PS2 of the characteristic peak PB1 and peanut extract of pine bark extract were determined.
3, the sample to be tested for liquid chromatography, according to whether the map contains the characteristic peaks PB1 or PS1, PS2, to identify whether the grape seed extract adulterated pine bark extract or peanut extract, mixed with more than 3% Can be accurately identified.