Biofilms in the dairy industry: significance, formation, control

Ryabtseva, S.A.; Hramtsov, A.G.; Евдокимов, И. А.; Anisimov, G.S.; Salova, O.V.

doi:10.31515/1019-8946-2018-1-57-59

Cited by 4 publications

(3 citation statements)

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“…Творожная сыворотка содержит большое количество биологически активных веществ, преимущественно белковой природы [16]. По своему составу творожная сыворотка отличается от молока только отсутствием казеина, который в кислой среде образует хлопья.…”

Section: материалы и методыunclassified

Use of healing mud when making a fermented cosmetic mask

Baldynova

Hamhanova

2022

Vestn. Voronež. gos. univ. inž. tehnol.

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The current concern in the cosmetic industry is preparing of cosmetics products from aggressive preservatives-free natural, environmentally friendly ingredients, which would protect skin from external disturbance. The purpose of our work is to develop a biotechnological method for obtaining a cosmetic mask based on fermented curd whey in the presence of therapeutic mud. We used standard methods for determining microbiological and physicochemical parameters. The optimal concentration of therapeutic mud for fermentation was determined by quantitative estimation method of cells in the HMS nutrient medium after fermentation in pasteurized curd whey with the addition of different amounts of therapeutic mud. The result of the study is development of a cosmetic mask based on fermented whey mixture adding 10% of therapeutic mud of nutrient medium volume. The addition of therapeutic mud in an amount of 10% of nutrient medium volume contributed to increase of biomass of propionic acid bacteria up to 82×108 units and to the regulation of the pH of medium. Control of the finished mixture for microbiological, physical-chemical, organoleptic indicators showed the absence of pathogenic microflora and the content of propionic acid bacteria 1·108 units. The results of the study allow to characterize the ready mix as a product that combines biologically active substances, microelements, therapeutic mud hormones and metabolites of propionic acid bacteria, which can form the basis for the preparation of any cosmetics. The paper also proposes a method for preparing a cosmetic mask from fermented curd whey with propionic acid bacteria in the presence of therapeutic mud and a recipe for their manufacture with the addition of bentonite clay to stabilize the system. Prototypes of the obtained mask show skin elasticity and complexion improvement and smoothing of fine wrinkles.

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Section: материалы и методыunclassified

Use of healing mud when making a fermented cosmetic mask

Baldynova

Hamhanova

2022

Vestn. Voronež. gos. univ. inž. tehnol.

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“…The biofilm formation in the equipment surface significantly affects the quality and safety of dairy products [4,5]. The recent increase of biofilm research publications about the dairy industry indicates the relevance of this research (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The emerging communities of microorganisms surrounded by an exopolymer layer are very resistant to thermal and chemical treatment. Therefore, a biofilm formation reduces the efficiency of washing and disinfection procedures standard for the dairy industry [5,6].…”

Section: Introductionmentioning

confidence: 99%

Modelling formation and removal of biofilms in secondary dairy raw materials

Ryabtseva

Tabakova

Храмцов

et al. 2021

Foods and Raw Materials

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Introduction. Microorganisms of dairy raw materials tend to adhere to the surfaces of processing equipment and form sustainable biofilms, which is a serious issue in the dairy industry. The goal of the present work was to investigate formation of biofilms on a glass surface in static model conditions, and removal of such biofilms by cleaning. Study objects and methods. The study objects were the permeates of skim milk, sweet whey and acid whey, as well as the biofilms formed and washings from glass slides. Biofilms were removed from the glass with detergents used in the dairy industry. Standard methods of determining microbiological and physicochemical properties were used to characterize the permeates. The biofilm structure and morphology of microorganisms participating in biofilm formation were investigated with a light spectroscopy. The efficiency of biofilm removal in a cleaning process was quantified with optical density of washings. Results and discussion. Biofilms in whey permeates formed slower compared to those in skimmed milk permeate during the first 24 h. Yeasts contributed significantly to the biofilm microflora in acid whey permeate throughout 5 days of biofilm growth. Well adhered biofilm layers were the most stable in skimmed milk permeate. The highest growth of both well and poorly adhered biofilm layers was observed in sweet whey permeate after 3–5 days. It was established that the primary attachment of microorganisms to a glass surface occurred within 8 h, mature multicultural biofilms formed within 48 h, and their partial destruction occurred within 72 h. Conclusion. The research results can be used to improve the cleaning equipment procedures in processing secondary dairy raw materials.

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Removal of biofilms formed on ion-exchange membranes in ultrafiltration permeates of secondary dairy raw materials

Ryabtseva

Tabakova

Храмцов

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

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The modelling of biofilm development on MK-40 and MA-41Π ion-exchange membrane coupons was conducted in skim milk, sweet whey and acid whey ultrafiltration permeates. The membranes were suspended in permeates for up to five days at the room temperature. The incubation was followed with cleaning procedure including water rinsing, acidic, enzymatic and alkaline steps. The efficiency of each step was estimated by the optical densities of waste cleaning solutions relative to original values prior to cleaning. Cleaning efficiency was influenced by the growth medium, type of membrane and incubation time. The biofilms formed in acid whey permeate showed the highest resistance to the introduced cleaning procedure. Moreover, no increase in the optical density of cleaning solutions was observed for 24-h-old biofilms formed in acid whey permeate. Generally, biofilms demonstrated better attachment to MA-41Π membranes. The acidic cleaning step appeared to remove the highest amount of biofilm material from the membrane. However, in some cases, the full cleaning procedure was insufficient to remove a biofilm.

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Biofilms in the dairy industry: significance, formation, control

Cited by 4 publications

References 0 publications

Use of healing mud when making a fermented cosmetic mask

Use of healing mud when making a fermented cosmetic mask

Modelling formation and removal of biofilms in secondary dairy raw materials

Removal of biofilms formed on ion-exchange membranes in ultrafiltration permeates of secondary dairy raw materials

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