Food waste occurs at all stages of the food chain, but it is households in developed countries that have the largest share in the production of food waste. In order to develop and implement effective ...programs to combat consumers throwing away food, the factors that determine food waste in a household must first be known. The purpose of this study was to assess the risk of food waste by Polish consumers and identify the effect of demographics on the respondents’ behavior related to food management. The results show that factors such as age, gender, place of residence, and education influence consumer behavior in terms of food management at home. It was found that young people and those with university-level education were more likely to buy unplanned products and waste food. The causes of the risk of wasting food were identified and their frequency determined. The most common causes for the risk of food waste include food being spoiled, missing the expiry date, and failure to arrange food in cabinets according to the expiry date. Bread was the most frequently wasted product, especially by young respondents.
Kombucha is a healthy beverage which is a final result of tea fermentation by adding a starter culture of the acetic acid bacteria and yeasts. The effect of fermentation conditions on ...physicochemical, microbiological and sensory properties of Kombucha tea beverages was evaluated with emphasis placed on determining sugars and organic acids content, including pro-health glucuronic acid. Fermentation process was conducted for 10 days at 20°C, 25°C and 30°C. The optimal conditions for the fermentation of Kombucha tea beverages were a temperature of 25°C and a period of 10 days which allowed to retrieve a product with good physicochemical, microbiological and sensory quality. The content of glucuronic acid increased during fermentation at all temperatures reaching the highest, on the 10th day of fermentation at 25°C. It was observed that all beverages were a good overall quality, whereas Kombucha fermented at 25°C was assessed as the highest.
Oscypek and korycinski are traditional Polish cheeses, exclusively produced in Tatra and in Podlasie region, respectively, produced from raw, unpasteurized milk. The 29 Lactobacillus plantarum ...strains were isolated on MRS agar from 12 cheese samples and used as a material for study. The main purpose of the work was to assess the antimicrobial properties and recognition of selected strains for the unique antagonistic activity and preservation role in food. It has been found that the highest antimicrobial activity was observed in the case of L. monocytogenes strains; however, the level of that activity was different depending on the Lb. plantarum strain. Strains from oscypek produced broad spectrum, and a few strains isolated from korycinski cheese produced a narrow spectrum of antimicrobial compounds, other than organic acids and hydrogen peroxide. Moreover, the antagonistic activity shown by Lb. plantarum strains is connected with the source from which a given strain was isolated. Strains isolated from oscypek cheese represented stronger activity against L. monocytogenes, whereas strains isolated from korycinski cheese were more active against E. coli. Strains Lb. plantarum Os13 and Kor14 could be considered as good candidates for protective cultures to extend durability of food products.
Probiotic meat products and human nutrition Kołożyn-Krajewska, Danuta; Dolatowski, Zbigniew J.
Process biochemistry (1991),
12/2012, Letnik:
47, Številka:
12
Journal Article
Recenzirano
► Production of meat probiotic products is limited by the number of technological factors. ► Probiotic strains should be present in the product in the number at least 106/g to have an impact on the ...health of consumers. ► More research is required to identify the strains and combinations of probiotic bacteria strains that produce health benefits. ► The risk connected with probiotic meats consumption may be biogenic amines.
Raw cured and ripened meat products have been traditionally manufactured using the fermentation of native or added carbohydrates by lactic acid bacteria found in meat or in its environment. The commercial application of probiotic microorganisms in dry fermented meat products is not yet common. Probiotic bacterial strains that can be used in the manufacturing of dry fermented meat products should be capable of surviving in conditions found in fermented products; furthermore, they should dominate other microorganisms found in the finished product. The initial number of microorganisms in sausage filling or on the surface of ham or loin cannot be reduced as in milk pasteurization, for example. Therefore, the choice of appropriate microorganisms is important. Probiotic meat products are a relatively new and not very well recognized field of meat industry, but the most important issue is to find a compromise between technological aspects, safety, quality and health-beneficial effects of food. Therefore, the object of this review is on the one hand to analyze technological possibilities and quality parameters of probiotic meat products, and on the other hand to discuss risks and benefits of probiotic meat used in human nutrition.
The problem of food waste and food loss covers the entire food chain, and its scale varies depending on the part of the chain. The aim of the study was to identify a problem and indicate places where ...goods redistribution is possible at the food transportation stage. The article provides a detailed breakdown of the causes of losses at the transportation stage. The research material was a large dairy cooperative in Poland. It was found that it was possible to recover 25.08 tons of dairy products. Taking into account the total weight of the cargo carried by all transport units during the analyzed period, this amount is approximately 0.5% of the full load capacity of all transport units in a two-year period. The research conducted shows that losses during the transportation of finished goods are generated, therefore it is possible to recover part of the food during the loading, transportation and unloading stages. The present practice involves an unconditional disposal of all products, which for various reasons are not delivered to the customer at the appropriate time and in proper commercial quality (accidents, collisions). The disposal of ready, often packed, completely safe products is a highly undesirable phenomenon, especially in the context of the poverty experienced by part of society.
All entities of the food supply chain should be responsible for counteracting food waste, therefore a need arises for joint initiatives in this area. To reduce food waste, businesses should be ...supported with a number of procedures for the efficient use of food for social purposes that shall be consistent with the law in force.
Although they can bring about some losses, the following factors neither pose a threat to human health nor affect the donation of food for social purposes: wrong labelling of packages, food product wrong weight, close-to-end expiration date as well as mechanical damage to bulk packages. The purpose of this study is to identify such points at each of the four stages of the food supply chain (primary production, processing, distribution, sale) where food losses can be prevented by donating food to those who need it.
A total of 15 Recovery Points were identified at the above mentioned four stages of the food supply chain. Food recovered there is safe to human health, so it can be donated for social purposes.
Abstract
The study aimed to evaluate qualitatively and quantitatively the antimicrobial capacity of 10 potential probiotic Lactobacillus strains against model enteropathogens and spoilage ...microorganisms. The probiotic strains (live and heat-killed forms) were also assessed for their ability to inhibit adhesion of selected pathogens to Caco-2 cells. The largest inhibition zones (the diffusion method) were connected with the usage of whole bacteria cultures (WBC), also high and moderate with cell-free supernatant (CFS) and the lowest with cell-free neutralized supernatant (CNS). The highest antagonistic activity of Lactobacillus strains was observed against L. monocytogenes strains, moderate activity against Salmonella, Shigella, Escherichia coli, Pseudomonas and, the lowest against S.aureus, Bacillus and Enterococcus. The inhibition of adhesion to Caco-2 cells was very high in the case of E. coli, Salmonella and L. monocytogenes, and moderate in the case of S.aureus. On average, the inhibition effect was higher when pathogenic bacteria were treated by WBC, than heat-killed Lactobacillus. Although, in most samples, the effect was not significantly different (P> 0.05). The strains Lb. brevis O24 and Lb. rhamnosus K3 showed the biggest overall antimicrobial properties, and were most effective in adherence inhibition of investigated indicator strains. These bacteria or their metabolites can be used for the production of various foods or pharmaceutical products.
A total of 10 strains ofLactobacillus, isolated from traditional Polish fermented cucumber and cabbage, applied as both live and heat-killed cells had antimicrobial activity against model enteropathogens and spoilage microorganisms.
The aim of the research was to estimate the effect of selected lactic acid bacterial strains on the technological quality and microbiological stability of mechanically separated poultry meat (MSPM) ...cured with a reduced amount of sodium nitrite. The 5 different treatments of MSPM batters were prepared: C150 – control cured with sodium nitrite at 150 mg/kg, C50 – control cured with sodium nitrite at 50 mg/kg, PL1 – cured with sodium nitrite at 50 mg/kg and inoculated Lactobacillus plantarum SCH1 at about 107 cfu/g, PL2 – cured with sodium nitrite at 50 mg/kg and inoculated Lactobacillus brevis KL5 at about 107 cfu/g, and PL3 – cured sodium nitrite at 50 mg/kg and inoculated L. plantarum S21 at about 107 cfu/g. The MSPM batters were tested at 1, 4 and 7 d of being in refrigerated storage. The scope of the research was as follows – physicochemical determinations: pH and redox, nitrates and nitrites as well as nitrosyl pigments levels, color estimation with a Comission Internationale de l'Eclairage Lab system and microbiological determinations: the total viable counts, the mesophilic lactic acid bacteria counts, Escherichia coli and Enterobacteriaceae counts. The inhibitory effect of L. plantarum SCH1 isolated from the ecological raw fermented meat product on E. coli in cured MSPM batters during refrigerated storage was proved (P < 0.05). The use of lactic acid bacterial strains in cured batters that were prepared and based on mechanically separated poultry meat did not have a negative effect on their technological quality. The positive effect of L. brevis KL5 on the level of nitrosyl pigments in the cured MSPM batters was observed (P < 0.05). The conducted research suggested the possibility of using the selected bacterial strains of the Lactobacillus genus to improve the microbiological quality of MSPM cured with a reduced amount of sodium nitrite.
This study aimed to develop a fermented puree mixture containing plant-based ingredients and potential probiotic strains
and
The survival of potential probiotic strains, changes in sugar and organic ...acid concentrations, bioaccessibility of polyphenols, and antioxidant capacity after simulated digestion were examined with sensory quality. The mixture of apple puree, chia seeds, and oat bran or oat flakes was fermented. The sensory quality of the puree mixture was assessed by the quantitative descriptive profile (QDP) method. In vitro digestion was simulated using a static gastrointestinal model. Antioxidant capacity and total polyphenol content were analyzed before and after the digestion phases. All samples changed sensory profiles after fermentation. The overall quality was above six out of ten for every product. Fermentation also changed the organic acid composition, with significant increases in lactic, succinic, and acetic acids. After the digestion process, the survival rate remained above 5.8 log
CFU/g. As a result of fermentation with potential probiotics, the bioaccessibility of the total phenolics and antioxidant activity increased. These results showed that the addition of potential probiotic strains increases nutritional value and could help with healthy nourishment habits. This knowledge can guide the development of consumer-satisfying products in the food industry, expanding the probiotic food market with innovative alternatives.
Twenty‐five strains, isolated from raw, non‐pasteurised, organic whey samples, were identified phenotypically and genotypically. Biochemical tests were performed, and enzyme profiles, antibiotic ...resistance and antimicrobial properties were investigated. Sixteen strains were identified as genus Lactobacillus. Based on 16S rDNA gene sequence, the strains were identified as Lb. plantarum and Lb. fermentum. All of the strains had β‐galactosidase activity, and some of them reduced nitrate content. All strains utilised carbohydrates. The tested strains were characterised by low or average lipolytic and esterolytic activity. Moreover, the strains showed low proteolytic activity which is advantageous for their use as starter cultures for foods with low protein content. Strains Lb. fermentum S20, SM1, SM3, S2R and Lb. plantarum SM5 produced harmful N‐acetyl‐β‐glucosaminidase; moreover, the strain S20 produced also β‐glucuronidase. None of the strains produced α‐chymotrypsin. In phenotypic studies, most of the test strains were susceptible to gentamicin, ampicillin, tetracycline, chloramphenicol, penicillin and erythromycin. Strains Lb. plantarum S1 and Lb. fermentum S4, S7, S8, S10, SM1 and SM3 did not possess any transfer resistance genes. Antagonistic activity of the culture LAB strains was assessed as high or moderate in relation to the indicator strains, with the greatest zones of inhibition for E.coli and the smallest for L. monocytogenes ATCC 15313. This study reveals that the LAB strains isolated from organic whey have high potential for food application. Some strains of species Lb. fermentum (S4, S7, S8, S10) have been identified as the best candidates.
Organic whey as a source of Lactobacillus strains with selected technological and antimicrobial properties. LAB ‐ lactic acid bacteria anti‐E.coli activity ‐ antimicrobial activity against Escherichia coli.
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