Question about Acetone Extraction of Salvia

[Waste]

Hey guys, been meaning to sign up for ages and finaly got round to it

I plan on doing a reasonable sized acetone extraction of salvia quite soon, and have seen a rather interesting 'fact';

Take your mixing bowl and place the muslin or cheesecloth in it so that the edges are liberally draped over the side of the bowl. Place the whole Salvia leaf on the cloth. Fill the bowl with COOL distilled water to generously cover the leaf. Be sure to submerge and wet all the leaf. Allow this to sit for ten minutes (no longer, and if your leaf was crushed it should be for a shorter period, say 7 minutes). Gather up the edges of the cloth to make a bag around the leaf and lift it out of the water to strain the leaf. GENTLY squeeze most (but not all) of the water from the leaf. Discard the water. While Salvinorin is insoluble in water, it is quite probable that a small amount was lost in this step, being pulled out along with the resins and oils which it is soluble in. This is bearable when one considers that 12 grams or so of gooey resins were just removed from your final product.

apologies for the large amount of reading heh.

So, my basic my question is although it says a small amount of the yield might be lost, how much are we talking here?
And also, by doing this CWE of tannins etc. to start with, would this not push the quality of the final product up greatly? I've done some reading and aparently using this CWE + a naptha wash at the end will produce very close to the quality found in standardised extracts.

Thoughts? Comments?

Cheers