Preparation: Chop straw or soft material. Wood must be fine
sawdust or treated with 400 deg F steam for 2 hrs.
Additives (Enzymes): Add a 1% caustic solution;
hold at 140 deg F for 3 hrs. to separate lignin.
Preboil: Draw off lignin, neutralize.
Cook at 140 deg F for 4 hrs. in 1% solution of Biocellulase**.
Cool Down: Remove sugar liquid.
Reduce temp. to 90 deg F; add brewer's yeast; agitate for 10 min.; cover.
Comments: Results: 2.5%
alcohol. Acid hydrolysis is an alternative but expensive method.
* Available from THE MOTHER EARTH NEWS, P.O. Box 70, Hendersonville, N.C. 28791.
** Available from Biocon, Inc.,
Dept, TMEN, 261 Midland Ave., Lexington, Ky. 40507.