DSpace Repository

Wastes utilization from brewing industry

Show simple item record

dc.contributor.author STURZA, Rodica
dc.contributor.author ȚĂRNĂ, Ruslan
dc.date.accessioned 2021-10-12T13:33:33Z
dc.date.available 2021-10-12T13:33:33Z
dc.date.issued 2021
dc.identifier.citation STURZA, Rodica, ȚĂRNĂ, Ruslan. Wastes utilization from brewing industry. In: Intelligent Valorisation of Agro-Food Industrial Wastes. Book of abstracts. International Conference, 7-8 October 2021. Chișinău, 2021, p. 14. ISBN 978-9975-3464-2-9. en_US
dc.identifier.isbn 978-9975-3464-2-9
dc.identifier.uri http://repository.utm.md/handle/5014/17696
dc.description Abstract. en_US
dc.description.abstract Beer is the most popular low-alcohol beverage consumed in large amounts worldwide. Yearly in the word it is produces around 200 billion liters of beer. Each 1000 tons of produced beer generate around from 137 to 173 tons of solid wastes which represents spent grain, residual yeast, kieselguhr (diatomite). Diatomite is used during beer filtration and the generated quantity is around 12 thousand tones of sludge. The obtained quantity of spent grain represents approx. 5 Mio. tones. Taking into consideration the high number of generated wastes, the reutilization of them becomes crucial nowadays for ecology. Another type of waste generated by the brewing industry is the sludge obtained after treatment of wastewater. The main directions of spent grain using are forages and food products. The spent grain has a high assimilation of protein substances 71-76%, fat 80-82%, extractive substances without nitrogen 60-65%, fibers 40-45%. By using of wet spent grain appears problems a stability to the storage conditions and transportation. Therefore, in the summer times the wet spent grain should be used for 24-72 hours. There are different methods of spent grain treatment to prolong the shelf live and one of them is drying process. The spent grain can be used also for preparation of protein concentrates. In the last times the spent grain is added to the dietetic food products, bakery, pasta, confectionery products, meat and milk systems. In the food industry seldom is used the wet spent grain, in the most of cases, basically this is dried and then transformed in a powder by using different technologies. Using the spent grain powder in the bakery and confectionery permits to reduce the production costs of finished products. It is elaborated the technology of xylite production from spent grain as well as ethylic alcohol. A new direction of using the spent grain is the energy production. The residual yeasts are used dried in the production of animal food. The yeast is reached in vitamins and can be used also in the production of medicines prophylaxis of different illness. Residual yeasts can be used as an additive to media for cultivation of microorganisms producing relevant value-added compounds used in the food industry. For this purpose, mainly hydrolysates and autolysates obtained from BSY are used. BSY is a potential supplement to media utilized for the growth of lactic acid bacteria and production of lactic acid, for production of ethanol by genetically modified E. coli strain, and for synthesis of succinic acid. The kieselguhr sludge can be used in the industry as absorbent or as addition in cement production as well in the agriculture for soil fertilization and Ph regulation. During treatment of wastewater in the brewery is obtained sludge. The sludge can be used as fertilizer. en_US
dc.language.iso en en_US
dc.publisher Universitatea Tehnică a Moldovei en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject brewery wastes en_US
dc.subject spent grain en_US
dc.subject residual yeast en_US
dc.subject kieselguhr en_US
dc.subject sludge en_US
dc.title Wastes utilization from brewing industry en_US
dc.type Article en_US


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States

Search DSpace


Advanced Search

Browse

My Account