Determination the optimal conditions for production of nanocellulose from acetic acid bacteria

Abstract

Bacteria could produce bacterial nanocellulose through a procedure steps: polymerization and crystallization, that occur in the cytoplasm of the bacteria, the residues of glucose polymerize to (β-1,4) lineal glucan chains that produced from bacterial cell extracellularly, these lineal glucan are converted to microfbrils, after that these microfbrils collected together to shape very pure three dimensional pored net. It could be obtained a pure cellulose that created by some M.O, from the one of the active producer organism like Acetic acid bacteria (AAB), that it is a gram -ve, motile and live in aerobic condition. The bacterial nanocellulose (BNC) have great consideration in many fields because of its flexible properties, features and advantages of the BNC. So in this study, the acetic acid bacteria (5AC) isolate was isolated from apple vinegar and detected the ability of this isolate to produce the nanocellulose on the Hestrin-Schramm (HS) medium, and then optimized the production condition, four parameters were investigated: temperature, pH, different carbon sources and nitrogen sources. After incubation the isolate for about (168- 192) hrs, the highest yield of BNC was identified by determining the wet weight, dry weight also the consumed sugar for each parameter.

Isolation and Characterization of a Novel Tertiary Substituted Amine from the Leaves of Sarcophrynium brachystachys (Benth.) K Schum

“…6 Spectroscopic methods have been used to determine the structures of plant extracts. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] More research is needed to elucidate the structures of this plant. It's often not clear how its bioactivity and its phytochemical components are related.…”