Method for preparing bacterial cellulose by using decayed fruits as raw materials

Abstract

The invention relates to a method for preparing bacterial cellulose by using decayed fruits as raw materials, which comprises the following steps: 1) squeezing the decayed fruits and collecting juice, preparing juice with 2.5-5wt% of total sugar content by pure water and then disinfecting, carrying out membrane filtration and degerming to obtain the treated juice; 2) putting bacterial cellulose in the treated juice to prepare bacterial strain, standing under the temperature of 20-30 DEG C and culturing, or dynamically culturing under the temperature of 20-30 DEG C and the rotating speed of 50-400rpm, culturing for 5-20 days to obtain the bacterial cellulose. The invention has the advantages of simple preparation method, cheap and easy raw material acquisition and low cost, and is suitable for large scale production; the prepared bacterial cellulose has advantages of high output and wide application prospect.

Description

technical field [0001] The invention belongs to the field of bacterial cellulose preparation, in particular to a method for preparing bacterial cellulose by using rotten fruit as a raw material. Background technique [0002] Bacterial Cellulose (BC) is a natural polymer produced by microbial fermentation. It has the same chemical composition as plant cellulose, but exhibits unique physicochemical and mechanical properties, including high crystallinity, high water holding capacity, ultrafine nanofiber network, high tensile strength and elastic modulus, etc. It is used in many fields such as food, papermaking, medical materials, and sound diaphragms. It is a new type of material that has attracted much attention at home and abroad. [0003] At present, there are still some problems in the large-scale production of bacterial cellulose, such as high cost of raw materials and low yield. At present, the fermentation and synthesis of bacterial cellulose mainly uses carbohydrates ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some problems in the large-scale production of bacterial cellulose, such as high cost of raw materials, low output, etc.

At present, the fermentation and synthesis of bacterial cellulose is mainly based on carbohydrates such as glucose and fructose combined with nitrogen sources such as yeast extract and peptone, which have high costs and low yields.