scholarly journals Screening of probiotic cultures intended for processing of fermented foods for their ability to produce biogenic amines

Author(s):  
Radka Burdychová ◽  
V. Dohnal

The contemporary trend is using probiotic cultures in fermented food production. They can be used as starter cultures and for their positive effect on human health. Probiotics are defined as living microorganisms present in food which consumed in adequate amounts affects positively the intestinal microflora’s composition and balance and thus human health itself. Cultures of these bacteria have to be of human origin and be able to survive the passage through the gastrointestinal tract. They also have to be able to multiply on the site of action (in intestine) and must not be toxic or pathogenic. Unfortunately, even some probiotic cultures can be counted among potential producers of biogenic amines, so their testing for the presence of biogenic amines is necessary (BURDYCHOVÁ, 2007).The aim of this study was screening of 26 types of bacterial cultures (SACCO, Italy) as probiotic cultures for their ability to produce biogenic amines tyramine and histamine. Cultivation in decarboxy­lating medium (BOVER-CID and HOLZAPFEL, 1999), HPLC descibed by BURDYCHOVÁ and DOHNAL (2007), and PCR detection of genes coding enzymes tyrosindecarboxylase and histidindecarboxylase, participating in formation of biogenic amines (COTON et al., 2004), were used as the screening methods. 19 strains of Lactobacillus spp., 3 strains of Bifidobacterium spp., 2 strains of Pediococcus spp. and 2 strains of Enterococcus spp. were examined by the methods mentioned above. The tyramine production was detected at 8 strains of Lactobacillus spp., 3 strains of Bifidobacterium spp. and 2 strains of Enterococcus spp., whereas no tested cultures were found to be able to produce histamine.The strains at which production of biogenic amines tyramine and histamine wasn’t detected are suitable for fermented food processing. When the strains at which production of tyramine was demonstrated were used in food processing, a control of concentration of this biogenic amine in final product is highly recommended.

2020 ◽  
Vol 150 (7) ◽  
pp. 1680-1692 ◽  
Author(s):  
Leah T Stiemsma ◽  
Reine E Nakamura ◽  
Jennifer G Nguyen ◽  
Karin B Michels

ABSTRACT The human microbiota is a key contributor to many aspects of human health and its composition is largely influenced by diet. There is a growing body of scientific evidence to suggest that gut dysbiosis (microbial imbalance of the intestine) is associated with inflammatory and immune-mediated diseases (e.g., inflammatory bowel disease and asthma). Regular consumption of fermented foods (e.g., kimchi, kefir, etc.) may represent a potential avenue to counter the proinflammatory effects of gut dysbiosis. However, an assessment of the available literature in this research area is lacking. Here we provide a critical review of current human intervention studies that analyzed the effect of fermented foods on the composition and/or function of the human gut microbiota. A total of 19 human intervention studies were identified that met this search criteria. In this review, we discuss evidence that consumption of fermented foods may modify the gut microbiota in humans. Further, there is cursory evidence to suggest that gut microbiota compositional changes mediate associations between fermented food consumption and human health outcomes. Although promising, there remains considerable heterogeneity in the human populations targeted in the intervention studies we identified. Larger longitudinal feeding studies with longer follow-up are necessary to confirm and enhance the current data. Further, future studies should consider analyzing microbiota function as a means to elucidate the mechanism linking fermented food consumption with human health. This review highlights methodologic considerations for intervention trials, emphasizing an expanse of research opportunities related to fermented food consumption in humans.


2010 ◽  
Author(s):  
◽  
Vinodh Aroon Edward

Cassava, (Manihot esculenta Crantz), is used for the production of a variety of West African foods and ranks fourth in the list of major crops in developing countries after rice, wheat and maize. Gari is one of the most popular foods produced from cassava. Cassava may contain high levels of linamarin, a cyanogenic glucoside, which in its natural state is toxic to man. Therefore, some processing methods that can enhance the detoxification of cassava and lead to the improvement of the quality and hygienic safety of the food are vitally important for less toxic products to be obtained. Quality, safety and acceptability of traditional fermented foods may be improved through the use of starter cultures. There has been a trend recently to isolate wild-type strains from traditional products for use as starter cultures in food fermentation. A total of 74 bacterial strains and 21 yeast strains were isolated from a cassava mash fermentation process in a rural village in Benin, West Africa. These strains were assessed, together with 26 strains isolated at the CSIR from cassava samples sent from Benin previously, for phenotypic and technological properties. Twenty four presumptive lactic acid bacteria (LAB) were selected for further phenotypic, genotypic and technological characterization during a research visit to the BFE (now Max Rubner Institute of Nutrition and Food). After assessment, the strains VE 20, VE 36, VE 65b, VE 77 and VE 82 were chosen for further study as starter cultures. These L. plantarum strains were chosen on the basis of predominance and possession of suitable technological properties. The investigation of this study was complemented by further, similar studies on further Gari isolates in Germany by the BFE. That study was done independently from this study, but both studies served to select potential starter cultures for cassava fermentation for the production of Gari, as this was the common goal of the project. Thus, a wider final selection of potential starter cultures was decided on at the project level and this selection was further tested in fermentation experiments. A total of 17 strains were grown in optimized media in 2 L fermenters. These strains were freeze-dried and thereafter tested in lab-scale cassava mash fermentation trials. xiii The strains performed well in the small scale bucket fermentations. There was a rapid acidification evidenced by the increase in titratable acidity, ranging from 1.1 to 1.3 % at 24 hours, and 1.3 to 1.6 % at 48 hours. The effect of the starter was obvious in that it lowered the pH much faster and to lower levels than the control. It appeared that both the processing and starter culture addition played a role in the removal of cyanide during processing of the cassava into Gari. This was evident from the lower cyanide values obtained for fermentations that included starter cultures. The study also showed that especially the L. plantarum group strains could be produced as starter cultures at lower costs than compared to L. fermentum, W. paramesenteroides or L. mesenteroides strains. Overall the results of this study were crucial for the project in showing that a starter culture which is easy and economical to produce and which has the desired attributes is a feasible possibility for application in the field.


2020 ◽  
Vol 74 (5) ◽  
pp. 391-397
Author(s):  
Janine Anderegg ◽  
Florentin Constancias ◽  
Leo Meile

Tyramine is a health-adverse biogenic amine, which can accumulate in fermented foods like cheese by decarboxylation of the free amino acid tyrosine by either starter cultures or resident microbes such as lactic acid bacteria including Enterococcus spp., respectively. Our study aimed to show the effect of sodium chloride concentrations on tyramine production as well as to characterise bacterial strains as anti-tyramine biocontrol agents in a 2 mL micro-cheese fermentation model. The effect of sodium chloride on tyramine production was assayed with tyramine producing strains from eight different species or subspecies. Generally, an increase in sodium chloride concentration enhanced tyramine production, e.g. from 0% to 1.5% of sodium chloride resulted in an increase of tyramine of 870% with a Staphylococcus xylosus strain. In the biocontrol screening among lactic acid bacteria, a Lactobacillus plantarum JA-1199 strain was screened that could consume in successful competition with other resident bacteria tyrosine in the micro-cheese model as a source of energy gain. Thereby tyramine accumulation was reduced between 4% to 99%. The results of this study disclose a feasible strategy for decreasing tyramine concentration and increasing the safety level of fermented food. It is an example of development and application of bacterial isolates as starter or protective cultures in food, a biocontrol topic, which Oreste Ghisalba – in his project evaluation function of SNF and later on CTI – was promoting with great emphasis in our ETH Food Biotechnology research group.


2020 ◽  
Vol 8 (10) ◽  
pp. 1534
Author(s):  
Andrea Comasio ◽  
Simon Van Kerrebroeck ◽  
Henning Harth ◽  
Fabienne Verté ◽  
Luc De Vuyst

Microbial strains for starter culture-initiated sourdough productions are commonly isolated from a fermenting flour–water mixture. Yet, starter culture strains isolated from matrices other than sourdoughs could provide the dough with interesting metabolic properties and hence change the organoleptic properties of the concomitant breads. Furthermore, the selection of sourdough starter cultures does not need to be limited to lactic acid bacteria (LAB), as other food-grade microorganisms are sometimes found in sourdoughs. Therefore, different strains belonging to LAB, acetic acid bacteria (AAB), and coagulase-negative staphylococci (CNS) that originated from different fermented food matrices (fermenting cocoa pulp-bean mass, fermented sausage, and water kefir), were examined as to their prevalence in a wheat sourdough ecosystem during 72-h fermentations. Limosilactobacillus fermentum IMDO 222 (fermented cocoa pulp-bean mass isolate) and Latilactobacillus sakei CTC 494 (fermented sausage isolate) seemed to be promising candidates as sourdough starter culture strains, as were the AAB strains Acetobacter pasteurianus IMDO 386B and Gluconobacter oxydans IMDO A845 (both isolated from fermented cocoa pulp-bean mass), due to their competitiveness in the wheat flour-water mixtures. Wheat breads made with G. oxydans IMDO A845 sourdoughs were significantly darker than reference wheat breads.


Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1807
Author(s):  
Martin Grootveld ◽  
Benita C. Percival ◽  
Jie Zhang

Although biogenic amines (BAs) present in fermented foods exert important health-promoting and physiological function support roles, their excessive ingestion can give rise to deleterious toxicological effects. Therefore, here we have screened the BA contents and supporting food quality indices of a series of fermented food products using a multianalyte-chemometrics strategy. A liquid chromatographic triple quadrupole mass spectrometric (LC-MS/MS) technique was utilized for the simultaneous multicomponent analysis of 8 different BAs, and titratable acidity, pH, total lipid content, and thiobarbituric acid-reactive substances (TBARS) values were also determined. Rigorous univariate and multivariate (MV) chemometric data analysis strategies were employed to evaluate results acquired. Almost all foods analyzed had individual and total BA contents that were within recommended limits. The chemometrics methods applied were useful for recognizing characteristic patterns of BA analytes and food quality measures between some fermented food classes, and for assessing their inter-relationships and potential metabolic sources. MV analysis of constant sum-normalized BA profile data demonstrated characteristic signatures for cheese (cadaverine only), fermented cod liver oil (2-phenylethylamine, tyramine, and tryptamine), and wine/vinegar products (putrescine, spermidine, and spermine). In conclusion, this LC-MS/MS-linked chemometrics approach was valuable for (1) contrasting and distinguishing BA catabolite signatures between differing fermented foods, and (2) exploring and evaluating the health benefits and/or possible adverse public health risks of such products.


2021 ◽  
Author(s):  
Gurmesa Tesema Keyeta

Fermented food and beverage products are made globally using different practices of fresh materials with microbes. Fermented foods have sample sources of essential vitamins, minerals, enzymes and antioxidants that are all enhanced through the process of fermentation. The advantageous effects related with fermented products have a special prominence during the production of these products in less industrialized countries like Ethiopia. In the country, fermented food and beverage products have practiced in a long history. During the production of traditional fermented food natural fermentation process with the absence of starter cultures are used to initiate the fermentation process Ethiopia. The use of yeast is also common with the popularization of modern baking and pastry in the country. Moreover, the preparation of much traditionally fermented food is still practiced in a household art even though there are electric ovens and other accessories have been introduced in the restaurants and business centers. The bread can be prepared from various cereals but for Injera tef [Eragrostis tef (Zucc.) Trotter] is the most preferred ingredient. The traditional bread locally called hamasha has also been prepared with various modified ingredients and fermentation techniques.


Nutrients ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1111 ◽  
Author(s):  
Oluwafemi Ayodeji Adebo

Sorghum (Sorghum bicolor) is a well-known drought and climate resistant crop with vast food use for the inhabitants of Africa and other developing countries. The importance of this crop is well reflected in its embedded benefits and use as a staple food, with fermentation playing a significant role in transforming this crop into an edible form. Although the majority of these fermented food products evolve from ethnic groups and rural communities, industrialization and the application of improved food processing techniques have led to the commercial success and viability of derived products. While some of these sorghum-based fermented food products still continue to bask in this success, much more still needs to be done to further explore evolving techniques, technologies and processes. The addition of other affordable nutrient sources in sorghum-based fermented foods is equally important, as this will effectively augment the intake of a nutritionally balanced product.


2017 ◽  
Vol 280 ◽  
pp. S110
Author(s):  
María-Rosa Martínez-Larrañaga ◽  
Irma Ares ◽  
José-Luis Rodríguez ◽  
Marta Martínez ◽  
Arturo Anadon ◽  
...  

Meso ◽  
2017 ◽  
Vol 19 (4) ◽  
pp. 346-352
Author(s):  
Martin Dobeic

In the food processing industry disinfectants should ensure the quality and microbiological safety of food without the risks for the human health or environment. One of the potential and alternative less toxic disinfectants is the ozone. It is highly effective and environmentally acceptable disinfectant applicable on several places of food production premises, e.g. on equipment and directly on food products.


2021 ◽  
Vol 9 (2) ◽  
pp. 349
Author(s):  
Natalia Garcia-Gonzalez ◽  
Natalia Battista ◽  
Roberta Prete ◽  
Aldo Corsetti

Fermentation processes have been used for centuries for food production and preservation. Besides the contribution of fermentation to food quality, recently, scientific interest in the beneficial nature of fermented foods as a reservoir of probiotic candidates is increasing. Fermented food microbes are gaining attention for their health-promoting potential and for being genetically related to human probiotic bacteria. Among them, Lactiplantibacillus (Lpb.) plantarum strains, with a long history in the food industry as starter cultures in the production of a wide variety of fermented foods, are being investigated for their beneficial properties which are similar to those of probiotic strains, and they are also applied in clinical interventions. Food-associated Lpb. plantarum showed a good adaptation and adhesion ability in the gastro-intestinal tract and the potential to affect host health through various beneficial activities, e.g., antimicrobial, antioxidative, antigenotoxic, anti-inflammatory and immunomodulatory, in several in vitro and in vivo studies. This review provides an overview of fermented-associated Lpb. plantarum health benefits with evidence from clinical studies. Probiotic criteria that fermented-associated microbes need to fulfil are also reported.


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