the process hereby proposed is depicted in fig1 , where the flowchart f presents the blocks relating to the various stages of the process with the following subtitles : in the same flowchart f depicted in fig1 , it still has the following blocks : f 11 —“ cooling of the must between 38 and 35 ° c . in the sterilization unit by exchange of natural heat with the environment or by active exchange from a cold water source ”; f 13 —“ collection of cell mass by mobile unit coupled by pipes to the biodigestors and transfer to the propagation biodigestor . aliquot withdrawal for quality control ”; f 15 —“ quality control . collection of aliquots for inoculation in erlenmeyer flasks , measurement of ph and microscopic evaluation of cell viability ”. f 16 —“ process of propagation in biodigestors with controlled temperature of the environment between 28 ° c . and 32 ° c .”; f 17 —“ collection and transfer of polymer mass to the washing tank in flowing water , volume from 10 to 20 times the bacterial cellulose mass for a period from 6 to 24 hours until brown coloring is reached ”; f 18 —“ definitive brightening — successive washes in sodium hypochlorite solution at a concentration of 0 . 3 % up to 3 % in the ratio of 5 to 10 times the polymer mass volume until a pearlescent and translucent white coloring is obtained — period between 6 hours and 36 hours ”; f 19 —“ after brightening , transfer to tanks with distilled water in the ratio of 5 to 10 times the polymer mass . change every 6 hours to remove the hypochlorite residue , which is identified when the ph of the effluent reaches 6 . 2 — period of 12 to 36 hours ”. the fig2 illustrates a diagram of the equipment used in this process and that configure the sterilization and propagation sealed unit , which is indicated , generally , by number reference 1 , where can be seen the representation of sealed unit to production of hot water , steam and must sterilization 2 . the sealed unit for production of hot water , steam and must sterilization 2 is connected , by its upper region , to water and must receiving tube 3 and by its side , to washing , sterilization and feeding line 4 . in the same washing , sterilization and feeding line 4 , it is arranged a pressurizing pump for water and must 5 and , in the sequence , it is the biodigestor 6 . the biodigestor 6 is connected to a mobile unit of cell mass transfer 7 , to which is connected , on the other side , to a second biodigestor 6 , wherein both biodigestors 6 are connected , by their respective upper portions , to the washing , sterilization and feeding line and , by their respective bottom portions , to a line 8 to exhaust tailings for collection of liquid wastes . the material flow over the unit 1 , depicted in fig2 , is commanded by operating records 9 . the process of purification used for obtainment bacterial cellulose from crude polymer mass is safe , simple and fast , ensuring sustainability in all cycles of the process . the process of scale production of bacterial cellulose in sterilization and propagation sealed unit and the process of purification of polymer mass obtained by said process allows the controlled obtainment of bacterial cellulose with high purity level for application in production of different products from purified cellulose for application in medicine , pharmacotechnical and cosmetic dermatology areas . the cycle of processes using sugar cane derivatives such as sugar cane juice , treacle or molasses up to the purified bacterial cellulose is a technical - scientific innovation of economic impact . the cellulose is obtained through polymerization of glucose via microbiologic from sugars of renewable sources , derivatives of sugar cane , such as molasses , concentrated syrup , sugar , sugar cane juice and the other sugars , such as fructose , derived from fruit and coconut water , and lactose from dairy products via microorganism gluconoacetobacter hansenii lmspe isolated from regional biodiversity and propagated on biodigestors ( reactors ). in this process , the must , propagation source , is prepared from derivatives such as sugar cane molasses , concentrated sugar cane syrup , natural sugar cane juice obtained by crushing the sugar cane , preferably by easy of offering among other fruit derivatives such as coconut water or milk derivative serum obtained in the process of dairy products . the concentration of must sugar is defined through the brix scale and adjusted to a minimum value of 7 . 5 and maximum of 15 . 0 , preferably in the optimal range of brix 10 , measured by a refractometer . the adjustment of brix to the determined range is obtained by must dilution with water or by concentration from a sugar source such as sucrose , glucose , fructose or lactose . preparation of must from sugar cane molasses flowchart , fig1 . a must aliquot with brix adjusted to the determined scale is transferred to erlenmeyer flasks and autoclaved and used to production and microbiological control . for the scale production , the prepared must with brix adjusted is transferred through pumping to a sealed sterilization unit with steam thermal source or electrical resistance . after sterilization , the must is cooled still in the sterilization unit by heat natural exchange with the environment or by active exchange from a cold - water source . the sterile must reaching the temperature between 38 ° c . and 35 ° is pumped into the biodigestors previously sterilized by water steam from sealed unit of steam and sterilization production . to the biodigestors loaded with sterilized must and with temperature adjusted from 28 ° c . to 32 ° c . is added the propagation source cell mass , specific strain of the microorganism gluconoacetobacter hansenii lmspe , from a biodigestor whose fermentative process is already completed , the collection phase of bacterial cellulose . for external control of biological characteristics and propagation potential of the cell mass , aliquots are inoculated in erlenmeyrs with sterilized must . at that time , cell mass aliquots are seeded into flasks with liquid culture medium and on plates with solid media to evaluate the stability and purity of the colonies . in one of the aliquots , cell viability is evaluated by microscopic observation of the mobility of cells that should not be less than 25 %. the transfer of the cell mass among the biodigestors is performed by means of a sterile collector container connected to two biodigestors by two flexible tubes with taps previously sterilized by water steam flow from the sterilization unit . one of the tubes connected to the collector container is coupled to the donor biodigestor with the complete fermentative process , and the other tube is connected to the receiver biodigestor with the newly sterilized must . the container collector of sterile transfer is positioned uneven with the closed receiver biodigestor line by loading it with the biodigestor cell mass of the exhaust by aspirative flow . after the collector load , the tap of the transfer tube is closed and the collector container is raised to a higher level than the receiver biodigestor , the propagation biodigestor , and the tap of the transfer tube is opened . after the cell mass transfer , the tap of the transfer tube is closed and the system disconnected . the biodigestors installed in the propagation room make heat external exchange direct with controlled temperature of the environment between 28 ° c . and 32 ° c . the stirring rotor is turned 24 hours after inoculation and adjusted to one evolution cycle per hour . the biodigestor is discharged when an aliquot of must propagation reaches brix less than 2 or ph less than 4 . the process is continuous , transferring the cell mass of a donor or discharge biodigestor to another propagation , receiver biodigestor . the polymer mass accumulated by natural flotation in the must surface is collected and transferred to the washing tank in a volume of flowing water from 10 to 20 times the bacterial cellulose mass for a period of 6 to 24 hours for withdrawal of must and sugars wastes until a polymer mass presents a light brown coloring . the definitive brightening is obtained through successive washings until complete brightening in sodium hypochlorite solution in the concentration of 0 . 3 % up to 3 %, in the ratio of 5 to 10 times the volume of polymer mass , until a pearlescent and translucent white coloring is obtained , which occurs 6 hours and 36 hours . after brightening , the bacterial cellulose mass is transferred to a tank of distilled water , also in the ratio 5 to 10 times the volume of polymer mass , which is changed each 6 hours , to withdraw all sodium hypochlorite residue used in the process of brightening identified when the ph of effluent reaches 6 . 2 . the cycle occurs in a period from 12 to 36 hours . the process results in scale obtainment , of a polymer mass , of pure and clarified bacterial cellulose with high content of nanocellulose . the process of scale production of bacterial cellulose with high content of micro - and nanofibrils in high productivity biodigestors is of innovative impact and economic interest .