Nan an pressed salted duck was fermented by co-fermentation of Lactobacillus plantarum,Pediococcus pentosaceus,Staphylococcus xylosus and Micrococcus varians.
Transketolase is the key enzyme of pentose-phophate pathway, catalyses transfer of a two-carbon fragment from a ketolase (donor substance) to an aldose (acceptor substance).
That means the birch from high longitude and latitude areas will have lower content of the ash, extraction and lignin, higher content of the holocellulose and pentosan in the wood.
It exists the option of an alkaline or a neutral cooking to produce bleachable paper pulp, and of acid hydrolysis of the straw to produce furfural and fermentable pentoses to produce methanol.