The process consists of hydrolysis on pretreated lignocellulosic materials. Nursery beds are sown in spring with pretreated seeds or in fall with untreated seeds. A layer of chromium is deposited on pretreated metallic surfaces by electroplating techniques. Furthermore, ethanol organosolv pretreated rice straw was used to produce biohydrogen using "Enterobacter aerogenes". Often the platen will be pretreated with a spray adhesive. Seeds need to be pretreated by scarification prior to planting. The patients had already been heavily pretreated. Seeds must be pretreated with hot water prior to planting. Hollenstein's works utilize Behr house paints and pretreated Masonite boards.