Cost-effective production of bacterial cellulose using acidic food industry by-products

Abstract

To reduce the cost of obtaining bacterial cellulose, acidic by-products of the alcohol and dairy industries were used without any pretreatment or addition of other nitrogen sources. Studies have shown that the greatest accumulation of bacterial cellulose (6.19g/L) occurs on wheat thin stillage for 3 days of cultivation under dynamic conditions, which is almost 3 times higher than on standard Hestrin and Schramm medium (2.14g/L). The use of whey as a nutrient medium makes it possible to obtain 5.45g/L bacterial cellulose under similar conditions of cultivation. It is established that the pH of the medium during the growth of Gluconacetobacter sucrofermentans B-11267 depends on the feedstock used and its initial value. By culturing the bacterium on thin stillage and whey, there is a decrease in the acidity of the waste. It is shown that the infrared spectra of bacterial cellulose obtained in a variety of environments have a similar character, but we found differences in the micromorphology and crystallinity of the resulting biopolymer.

Bacterial cellulose production, properties and applications with different culture methods – A review

“…Meanwhile, these researches provided a broad idea about the potential of waste materials for ecofriendly and inexpensive BC production. (Tsouko et al, 2015;Revin et al, 2018;Waleed et al, 2015;Castro et al, 2011. Under different culture medium, the formation process and growth curve of BC are similar.…”

Bacterial Cellulose as a Raw Material for Food and Food Packaging Applications

“…On the other hand, many studies have focused on reducing its production costs by proposing cost-effective fermentation media to replace the expensive Hestrin and Schramm (HS) conventional medium. Several researches have been focused on the use of alternative cheap media, such as food industry by-products (Jozala et al, 2015;Fan et al, 2016;Molina-Ramírez et al, 2018;Revin et al, 2018) and cashew tree gum (Pacheco et al, 2017). Such alternative sources of nutrient media could be an interesting option to produce BC for food and food packaging applications, which do not require such a high purity degree as those required for biomedical applications.…”

Superabsorbent crosslinked bacterial cellulose biomaterials for chronic wound dressings

“…In terms of cost-effectiveness of BC dressing production, the primary focus has been on using various side-products from the food industry, instead of dedicated microbiological media, for cultivating cellulose-producing bacteria. Recently, Revin et al [50] presented promising results following this strategy. However, with regard to preserving BC waterrelated properties after drying process, there has been much less progress.…”