Production Of Fermented Beverages Research Articles

Biotransformation of Tropical Fruit By-Products for the Development of Kombucha Analogues with Antioxidant Potential.

In a country where millions of people have nutritional needs, innovative ways of producing food from commonly wasted agro-industrial by-products, can be an important alternative for the production of fermented beverages. In light of this, the aim of this study is to evaluate the potential of fruit by-products from acerola, guava and tamarind for the production of fermented beverages. Physicochemical and microbiological parameters, total antioxidant capacity and fermentation kinetics were investigated during the first (at 0, 48, 72, 96 and 168 h) and second fermentation (at 0 and 24 h). The acid profile of fermented beverages was determined by chromatography, and the sensory profile was determined by consumer acceptance test. Physicochemical parameters of all formulations complied with current legislation and were of satisfactory microbiological quality. The reslts of fermentation kinetics showed that both pH and soluble solids content decreased - with an average final pH of 3.12, 2.85 and 2.78 for the acerola, guava and tamarind formulations, respectively - while acidity increased with final values of 0.94, 0.75 and 1 % for the same formulations. Of all formulations, tamarind had the highest total soluble solids content (8.17 g/100 g), and acerola had the highest antioxidant potential determined as Trolox equivalents ((20.0±0.8) μM/g). Organic acids were found in all samples, with mainly glucuronic acid detected in the kombucha beverages. All formulations showed satisfactory sensory acceptability, although the results were better for guava. The fruit by-products can be used as raw materials for the development of alternative kombucha beverages. As consumers are increasingly selective in their food choices, the development of food products with high nutritional value has increased significantly in recent years. New types of fermentable beverages such as kombucha - using tropical fruit by-products to enhance their chemical composition, sensory properties and nutritional value - have created new opportunities for beverage consumption and offer greater health benefits than the traditional version, where only Camellia sinensis is used. The promotion of these co-products and their respective beverages is an excellent opportunity for sustainability and their commercialisation.

Harnessing Bacillus amyloliquefaciens for Amazake Production: Comparison with Aspergillus oryzae Amazake for Metabolomic Characteristics, Microbial Diversity, and Sensory Profile.

Amazake is a traditional, sweet, non-alcoholic Japanese beverage typically produced through koji fermentation by the fungus Aspergillus oryzae. However, alternative microorganisms such as Bacillus amyloliquefaciens offer potential advantages and novel possibilities for producing similar fermented beverages. This study aimed to replicate the ancestral beverage of amazake by replacing A. oryzae (W-20) with B. amyloliquefaciens (NCIMB 12077) and comparing their fermentation processes and resulting products. Our results show that the production of amazake with B. amyloliquefaciens (ABA) is not only possible but also results in a beverage that is otherwise distinct from traditional amazake (AAO). Saccharification was achievable in ABA at higher temperatures than in AAO, albeit with lower reducing sugar and enzymatic activity values. Amino acids and organic acids were more abundant in AAO, with cysteine being uniquely present in AAO and shikimic acid only being present in ABA. The volatile aroma compound profiles differed between the two beverages, with AAO exhibiting a greater abundance of aldehydes, and ABA a greater abundance of ketones and alcohols. Interestingly, despite these compositional differences, the two beverages showed similar consumer panel acceptance rates. An analysis of their microbial communities revealed pronounced differences between the amazakes, as well as temporal changes in ABA but not in AAO. This study provides promising insights into harnessing the potential of B. amyloliquefaciens as the primary microorganism in the fermentation process of amazake-like beverages, marking an important advancement in the field of fermented low-alcohol beverage production, with possible applications in other fermented foods.

Jerusalem Artichoke Tuber Processing: Influence of Pre-Treatment Methods, Lactic Acid, and Propionic Acid Bacteria Strains on Functional Fermented Beverage Production.

Fermented plant-based products are rapidly gaining popularity. Jerusalem artichoke is a medicinal plant that can be used to make fermented beverages. Samples were subjected to pretreatment (ultrasound at 35kHz for 2, 4, and 6min, freezing at -80°C and -17°C) while an untreated sample was used as control. It was shown that all types of pretreatments did not lead to an increase in protein, solids, polyphenols, and carbohydrates compared to the control sample. The greatest decrease in the values of these indicators occurs when pre-freezing tubers are used for Jerusalem artichoke dispersion production. It was also found that samples frozen at -80°C had a significantly higher concentration of Ca, Si, Mg, and P whereas untreated samples frozen at -17°C had more Al, K, Cu, Sr, and Cr. The processing method can affect the sensory descriptors of Jerusalem artichoke tuber dispersions to different extents, but the preference was for the control sample without pre-treatment. The fermentation of Jerusalem artichoke tuber dispersions demonstrated that S. thermophilus induced the most rapid fermentation (pH 4.75 in 5h). The highest antioxidant activity after fermentation (55.39% FRSA) was shown for L. acidophilus H9, while the highest % FRSA value during the storage period was for L. bulgaricus (67.5%) on day 5 after fermentation. The highest viability among all selected microorganisms was detected for L. bulgaricus, L. acidophilus AT-41, and B. coagulans MTCC 5856 with the increase in biomass content by 2.3, 2.27, and 2.12 log10CFU/ml after fermentation. According to the results of sensory evaluation using hybrid hedonic scale the best results were shown for samples fermented with L. bulgaricus.

Review on Microbiology of Cereal-Based Spontaneously Fermented Foods and Beverages

Spontaneously fermented cereal-based foods and beverages are fermented by diverse arrays of microorganisms which play significant roles at different stages of fermentation. The aim of this review is to summarize the scientific data on the microbiology of cereal-based spontaneously fermented foods and beverages. Yeasts are a large group of beneficial bacteria in food fermentation followed by lactic acid bacteria. Molds also play an important role in the production of various foods and non-food products. The possible functions of yeast in the fermentation of carbohydrates are aroma production, stimulation of lactic acid bacteria and degradation of mycotoxin. However, this review results reveal that all yeasts and molds are not beneficial microbes. According to the reports of many researchers, <i>Enterobacteriaceae</i> and total coliforms are not persisted to the end of fermentation. However, aerobic mesophilic bacteria, staphylococcus spp., and aerobic spore-forming bacteria are persisted to the end of some fermented food and beverage products. In spontaneous fermentation, aerobic spore-forming bacteria play crucial role in the begging stage of fermentation to breakdown of complex structure of food composition which facilitates the environment for the yeast and lactic acid bacteria. This review concluded that spontaneous fermentation process reduces both pathogenic and spoilage microorganisms to non-significant level thus make the end product safe for consumption.

Intermolecular copigmentation of anthocyanins with phenolic compounds improves color stability in the model and real blueberry fermented beverage

To improve the color stability of anthocyanins (ACNs) in blueberry fermented beverage, the intermolecular copigmentation between ACNs and 3 different phenolic compounds, including (−)-epigallocatechin gallate (EGCG), ferulic acid (FA), and gallic acid (GA) as copigments, was compared in the model and the real blueberry fermented beverage, respectively. The copigmented ACNs by EGCG presented a high absorbance (0.34 a.u.) and redness (27.09 ± 0.17) in the model blueberry fermented beverage. The copigmentation by the participation of the 3 different phenolic compounds showed all a spontaneous exothermic reaction, and the Gibbs free energy (ΔG°) of the system was lowest (−5.90 kJ/mol) using EGCG as copigment. Furthermore, the molecular docking model verified that binary complexes formed between ACNs and copigments by hydrogen bonds and π-π stacking. There was a high absorbance (1.02 a.u.), percentage polymeric color (PC%, 68.3 %), and good color saturation (C*ab, 43.28) in the real blueberry fermented beverage aged for 90 days, and more malvidin-3-O-glucoside had been preserved in the wine using EGCG as copigment. This finding may guide future industrial production of blueberry fermented beverage with improved color.

Oak Leaves as a Raw Material for the Production of Alcoholic Fermented Beverages.

This study aimed to point out the possible use of oak leaves (Q. petraea) in the production of fermented alcoholic beverages. Parameters such as antioxidant capacity, total phenolic content, phenolics and sugars were determined using spectrophotometric and chromatographic methods. pH values were also determined, and in the final product with a fermentation length of 85 days, the alcohol content was determined and sensory analysis performed. The antioxidant capacity of the beverage was lower compared to the infusions before fermentation, and its highest values were recorded in the leaf samples, in which the highest values of phenolic compounds and the total phenolic content were also recorded. A decrease in the content of total phenolics was recorded with the increasing length of fermentation in beverage samples. However, the fermentation process had a positive effect on the contents of some phenolic substances such as catechin, gallic acid and gallocatechin. Sensory analysis showed a higher acceptability of the fermented beverage without the addition of orange, which could be caused by the higher sugar content in these samples. Oak leaves therefore represent a suitable raw material for the production of a fermented alcoholic beverage, without the need to enrich the taste with other ingredients.

Production and Optimisation of Fermented Pumpkin-Based Mature Coconut Water Kefir Beverage Using Response Surface Methodology

Fermentation of pumpkin puree and mature coconut water using water kefir grains is a potential method for producing a novel functional non-dairy-based probiotic drink. In the present study, response surface methodology based on Box–Behnken design (RSM-BBD) was used to optimise fermentation temperature and substrates’ concentrations. The optimised fermentation temperature, pumpkin puree, and brown sugar concentrations of pumpkin-based mature coconut water kefir beverage (PWKC) were 27 °C, 20%, and 10% w/v, respectively. The optimised PWKC (PWKCopt) obtained an overall acceptability (OA) score of 4.03, with a desirable Lactobacillus count (6.41 Log CFU/mL), 0.68% v/v lactic acid content, 31% of water kefir grains’ biomass growth rate, and fermentation time (to reach pH 4.5) of 4.5 h. The optimized beverage, PWKCopt, contained 3.26% proteins, 2.75% dietary fibre, 2186.33 mg/L of potassium, 180.67 mg/L phosphorus, and 137.33 mg/L calcium and had a total phenolic content of 89.93 mg GAE/100 mL, flavonoid content of 49.94 mg QE/100 mL, and carotenoid content of 33.24 mg/100 mL, with antioxidant activity (FRAP: 169.17 mM Fe(II)/100 mL, IC50 value of DPPH free radicals scavenging activity: 27.17 mg/mL). Water kefir microorganisms in PWKCopt remained stable for at least 56 days at 4 °C. Therefore, PWKCopt might potentially serve as a value-added product, offering a basis for sustainable development within both the coconut and pumpkin industries.

Advancements in Fermented Beverage Safety: Isolation and Application of Clavispora lusitaniae Cl-p for Ethyl Carbamate Degradation and Enhanced Flavor Profile.

Ethyl carbamate (EC) is a natural by-product in the production of fermented food and alcoholic beverages and is carcinogenic and genotoxic, posing a significant food safety concern. In this study, Clavispora lusitaniae Cl-p with a strong EC degradation ability was isolated from Daqu rich in microorganisms by using EC as the sole nitrogen source. When 2.5 g/L of EC was added to the fermentation medium, the strain decomposed 47.69% of ethyl carbamate after five days of fermentation. It was unexpectedly found that the strain had the ability to produce aroma and ester, and the esterification power reached 30.78 mg/(g·100 h). When the strain was added to rice wine fermentation, compared with the control group, the EC content decreased by 41.82%, and flavor substances such as ethyl acetate and β-phenylethanol were added. The EC degradation rate of the immobilized crude enzyme in the finished yellow rice wine reached 31.01%, and the flavor substances of yellow rice wine were not affected. The strain is expected to be used in the fermented food industry to reduce EC residue and improve the safety of fermented food.

Design of Production Line of 2000 Tons of Fermented Milk Beverage with Annual Output of Whole Bean

The whole soybean fermented milk beverage designed by this production line is a beverage made of soybean as raw material and fermented under the fermentation action of compound probiotics. The design optimizes the production line of whole soybean fermented milk beverage with an annual output of 2000t and strictly refers to the relevant national regulations to determine the process design, material balance, equipment selection, water and electricity estimation, and workshop design of the whole soybean fermented milk beverage production line. Finally, the technical and economic analysis of the scheme shows that the fixed investment of the project is 7.95 million yuan, the annual production cost is 15193.72 million yuan, the total profit after tax reached 16.80628 million yuan, the construction period is 1 year, and the payback period is expected to be about 2 years.

Physicochemical changes in Amaranthus spp grains, flour, isolated starch, and nanocrystals during germination and malting

Amaranth is a pseudocereal that contains between 50 and 60% starch, gluten-free protein, and essential amino acids. This study investigates the physicochemical changes in Amaranthus spp. grains, flour, isolated starch and nanocrystals during germination and malting. The moisture content increased from 8.9% to 41% over 2 h of soaking. The percentage of germination increased rapidly, reaching 96% after 60 h, a remarkable advantage over other cereals. The nutrient composition varied, including protein synthesis and lipid degradation. Lipid concentration decreased during malting, except for soaking, which increased by 62%. Scanning electron microscopy shows that germination does not cause morphological changes on the outer surface of the grains, while transmission electron microscopy indicates the presence of isolated nanocrystals with orthorhombic crystal structure confirmed by X-ray diffraction. The viscosity profile shows a decrease in peak viscosity. Therefore, amaranth is a potential pseudocereal that can be used as an additive in the production of fermented beverages.

Development of a Fermented Probiotic Beverage Inoculated with Kefir Grain

Background: Probiotics are live microorganisms that confer to have health benefits when consumed directly or processed. Regular administration of Probiotics would help in improving the gut microflora that has gained importance as bacteriotherapy which prevents the gastro-intestinal disease caused by pathogenic microorganisms. Vegans who are allergic or intolerant to dairy products can have the benefits of organic acids that are produced through fermentation. The present study was carried out to know the benefits of fermented products using kefir grains and fruits. Methods: The fermented product was tested for the evaluation of flavours, sensory, and shelf life which seemed to be very promising. In context to biomolecules, the product had a high concentration of absorbable protein, carbohydrate, antioxidant, and antibacterial properties. Result: The production of fermented beverages of certain fruits on a large scale, and its consumption may promote additional health benefits. The kefir beverage that is produced in this work may help to fill the gap between actual and innovative consumption of the fruits and kefir that may be recommended in the human diet with concern for their health.

Production of plant-based fermented beverages using probiotic starter cultures and Propionibacterium spp.

The popularity and demand for cow's milk substitutes has increased in recent years. Plant-derived beverages appear to be among the most important substitutes for cow's milk. By breaking down legumes, grains and nuts and homogenizing them with water, liquids similar to cow's milk in terms of appearance, taste and shelf life are used in the production of different beverages and fermented foods. This study aimed to produce vegan beverages by fermenting soy, almond, and coconut beverages with probiotic starter cultures and Propionibacterium spp. Physicochemical, microbiological, and sensory properties of the produced plant-based fermented beverages were examined during storage. Whereas the use of various nondairy beverages in the production of probiotic beverages affects the acidity, color (L* a* and b*), serum separation, water holding capacity, and viscosity values (p < 0.05), microbiological analysis showed that probiotic (Bifidobacterium BB-12®) viability during storage was protected and the counts of Propionibacterium spp. increased. It was observed that plant beverage type did not affect the viability of Propionibacterium spp. and probiotics (p > 0.05). Additionally, whereas the fermented coconut beverage was liked the most, the fermented soy beverage was liked the least.

Sustainable packaging materials for fermented probiotic dairy or non-dairy food and beverage products: challenges and innovations.

The food and beverage packaging industry has experienced remarkable growth in recent years. Particularly the requirement for appropriate packaging materials used for the sale of fermented products is boosted due to the rising acceptance of economical functional foods available to consumers on the shelves of their local supermarkets. The most popular nutraceutical foods with increased sales include natural yogurts, probiotic-rich milk, kefir, and other fermented food and beverage products. These items have mainly been produced from dairy-based or non-dairy raw materials to provide several product options for most consumers, including vegan and lactose-intolerant populations. Therefore, there is a need for an evaluation of the potential developments and prospects that characterize the growth of the food packaging industry in the global market. The article is based on a review of information from published research, encompassing current trends, emerging technologies, challenges, innovations, and sustainability initiatives for food industry packaging.

Cocoa Bean Shell By-Products as Potential Ingredients for Functional Food and Beverage - A Review

Cocoa processing generates by-products such as pod husks, pulp, and bean shells. Among these, cocoa bean shells (CBS) stand out as a significant by-product, comprising approximately 10% to 17% of the total weight of cocoa beans. These shells are typically separated from the cocoa beans before or after roasting. A large amount of waste can be produced during the mass processing of cocoa beans; in one year, the world has 700,000 tons. CBS contains various nutrients and beneficial compounds, including approximately 50% dietary fiber, proteins, minerals, vitamins, volatile compounds, and various polyphenols. The objectives of this review encompass assessing the potential of CBS as a valuable ingredient for developing functional foods and beverages. Our methodology involved a comprehensive literature search across multiple scholarly databases, focusing on journal articles exploring CBS utilization in functional foods and beverages. The results reveal CBS as a promising by-product with significant opportunities for value addition, presenting itself as a potential functional ingredient for food and beverage applications. However, the limited literature on developing CBS-based fermented beverage products akin to kombucha and kefir underscores the need for further research to explore their untapped potential fully.

Effect of fermented jicama extract with Lactobacillus plantarum B1765 as the starter culture on the product quality and total phenolic

This research studied the effect of fermented jicama extract with Lactobacillus plantarum B1765 as a starter culture on the product qualities and Total Phenolic (TP). Fermentation was carried out for 0, 12, 24, and 36 hours at 37oC with 5% (v/v) of starter culture then determine the Total Lactic Acid Bacteria (LAB) were measured using the Total Plate Count (TPC) method, pH, and TTA were measured using a pH meter and acid-base titration, and TP was measured using the Folin-Ciocalteu method. These results showed that the length of fermentation affected increasing total LAB, TTA, TP, and decreasing pH. The best fermentation time in jicama extract was fermented is 24 hours with a total LAB of (9.7±0.31)x107 CFU/mL, pH of 4.21±0.22, TTA of 0.220±0.069%, and TP of 16.22±0.31 mg GAE/g. This value is following the criteria for fermented beverage products. Fermented jicama extract with L. plantarum B1765 potentially increases the TP.

Effect of Additional Red Dragon Fruit Peel and Lemon Peel in the Development of Coconut Water Fermented Beverage Products using Lactic Acid Bacteria to Increase Antibacterial Activity

Effect of Additional Red Dragon Fruit Peel and Lemon Peel in the Development of Coconut Water Fermented Beverage Products using Lactic Acid Bacteria to Increase Antibacterial Activity

Preliminary Evaluation of Minor Cereals as Non-Traditional Brewing Raw Materials

Recently, “minor” cereals have been gaining interest due to their distinctive characteristics, not only in terms of nutritional and health potential, but also because of their hardiness. To date, the use of several of these cereals for the production, both at artisan and industrial level, of foods such as pasta and bakery products has already been well established, whereas their investigation for the production of malt and beer has been more limited. In this work, a preliminary analysis of the malting aptitude of einkorn, tritordeum, food-grade sorghum and teff was evaluated. Grain quality parameters that influence the processes of malting and transformation into alcoholic beverages were evaluated, i.e., thousand-kernel weight, test weight, total protein and starch content, falling number, germination capacity, germination energy and amylase activity. Grain analyses showed, on average, satisfactory values for alcoholic fermented beverage production in all the cereal species examined (mainly in tritordeum), whereas the amylase activity of the malts produced was lower than that revealed in barley malt. Fermented drinks derived from these minor cereals, therefore, could be interesting for the light and gluten-free beer markets.

Plant-Based Fermented Beverages: Development and Characterization.

The production of plant-based fermented beverages has been currently focused on providing a functional alternative to vegan and/or vegetarian consumers. This study primarily targeted the development and characterization of fermented beverages made up of hydrosoluble extracts of oats, almonds, soybeans, Brazil nuts, and rice. The fermentation was carried out by lactic cultures of Bifidobacterium BB-12, Lactobacillus acidophilus LA-5, and Streptococcus thermophilus. Plant extracts were fermented at 37 °C for 12 h, with and without sucrose supplementation. The physicochemical and microbiological stability of the extracts was monitored for 28 days at 5 ± 1 °C. The composition of the fermented beverages was subsequently determined. The pH values measured at the beginning and the end of the extracts' fermentation ranged between 6.45 and 7.09, and 4.10 to 4.97, respectively. Acidity indices, expressed as a percentage of lactic acid, ranged from 0.01 to 0.06 g/100 mL at the beginning of the fermentation, and from 0.02 to 0.33 g/100 mL upon fermentation being concluded. Most fermented extracts achieved viable lactic acid bacteria counts exceeding 106 CFU/mL during storage. Sucrose supplementation did not alter the rate of bacterial growth. The findings showed that the complete replacement of dairy ingredients with water-soluble plant extracts is a potential alternative for developing a functional fermented plant-based beverage.

Cereal Grain Arabinoxylans: Processing Effects and Structural Changes during Food and Beverage Fermentations

Arabinoxylans (AXs) enter food processing and fermentation scenarios whenever grain-based ingredients are utilized. Their impacts on process efficiency and food product quality range from strongly negative to clearly beneficial, depending on both the particular food product and the AX structure. This review will focus on two structure-function relationships between AXs and fermented food production: (1) AXs’ native structure in cereal grains and structural changes that arise during production of fermented foods and (2) the impacts of AXs on processing and production of grain-based fermented foods and beverages (bread, beer, and spirits) and how variations in AX structure shift these processing impacts. Results from recently published papers have provided new insights into the connection between AXs’ structure at the molecular level and their effects on fermented food production. The purpose of this article is to review the historical progress in this area and introduce updates from recent years. Current knowledge gaps in the area are highlighted.

Recent and Advanced DNA-Based Technologies for the Authentication of Probiotic, Protected Designation of Origin (PDO) and Protected Geographical Indication (PGI) Fermented Foods and Beverages.

The authenticity of probiotic products and fermented foods and beverages that have the status of protected designation of origin (PDO) or geographical indication (PGI) can be assessed via numerous methods. DNA-based technologies have emerged in recent decades as valuable tools to achieve food authentication, and advanced DNA-based methods and platforms are being developed. The present review focuses on the recent and advanced DNA-based techniques for the authentication of probiotic, PDO and PGI fermented foods and beverages. Moreover, the most promising DNA-based detection tools are presented. Strain- and species-specific DNA-based markers of microorganisms used as starter cultures or (probiotic) adjuncts for the production of probiotic and fermented food and beverages have been exploited for valuable authentication in several detection methods. Among the available technologies, propidium monoazide (PMA) real-time polymerase chain reaction (PCR)-based technologies allow for the on-time quantitative detection of viable microbes. DNA-based lab-on-a-chips are promising devices that can be used for the on-site and on-time quantitative detection of microorganisms. PCR-DGGE and metagenomics, even combined with the use of PMA, are valuable tools allowing for the fingerprinting of the microbial communities, which characterize PDO and PGI fermented foods and beverages, and they are necessary for authentication besides permitting the detection of extra or mislabeled species in probiotic products. These methods, in relation to the authentication of probiotic foods and beverages, need to be used in combination with PMA, culturomics or flow cytometry to allow for the enumeration of viable microorganisms.