>(2) Is anybody aware of an alternative to the benzene-methanol >extraction for the preparation of cellulose extracts. I'm not too happy >about the benzene (unless there's no alternative). 15 min. sonication under a ventilated hood of finely grounded plant debris into CHCl3 MeOH (3/1 v/v) then filtration (3-4 times) works well to remove lipids and resins. Dr Eric LICHTFOUSE Laboratoire Sols et Environnement INRA-ENSAIA/INPL, BP 172 2, avenue de la foret de Haye F-54505 Vandoeuvre-les-Nancy Cedex, France Phone (33) 3 83 59 58 99 (-58 45, -58 65) Fax (33) 3 83 59 57 91 [log in to unmask]