Juice Blend Research Articles

Chemical analysis and sensory acceptability of sweet potato-mango juice Blend

Chemical analysis and sensory acceptability of sweet potato-mango juice Blend

Microwave processing impact on physicochemical and bioactive attributes of optimized peach functional beverage

The health benefits of blended functional drinks make them popular among consumers and a highly profitable product sector. In this study, the compositions of peach juice, plum juice, and sugar solution were optimized by D-optimal mixture design in the ratio of 72:25:3 to develop a functional beverage with acceptable sensory attributes. The results also showed that a blending of fruit juices significantly increases the amount of bioactive compounds (TPC: 432 µg/100 ml; TFC: 169.5 µg CE/100 ml) along with antioxidant capacity. The integrated effect of conventional pasteurization (90°C, 10 min) and microwave heating (for 1, 1.5 and 2 min, 850 W, at 60°C,) on the resultant fluctuations in the physicochemical and bioactive attributes revealed that microwave processing held for 1.5 min was far superior than other treatments and it also enhanced the functional components of beverage including TPC to 33% and antioxidants to 16% (DPPH) and 24% (FRAP), respectively.

Chemical analysis and flavor properties of blended orange, carrot, apple and Chinese jujube juice fermented by selenium-enriched probiotics

Preparation of selenium-enriched probiotics and Se-enrichment of probiotic-fermented blended juices were performed and optimized using orthogonal test. Se content had a significant 13.0-fold increase by the addition of 1% Se-enriched Streptococcus thermophilus starters in juice fermentation. Chemical properties of fermented blended juices were determined. Reducing sugar content decreased significantly after fermentation, and the same downtrend was observed for free amino acids and organic acids, with lactic acid being an exception. Meanwhile, dynamic variation analysis of flavor components during the fermentation, and characteristic aroma-active compounds before and after fermentation were demonstrated by GC–MS and GC–O. Eleven aroma-active substances were identified from juices without fermentation, while 7 characteristic compounds were detected in fermented juices. Furthermore, potential correlations between chemical and flavor characteristics were explored based on multivariate statistical analysis. These results indicate that a potential Se-enriched fermented beverage was established, and the fermentation process led to differences in the chemical substrates and impact odorants.

IOT in the development of information support of food products for healthy nutrition

The marking of food products comprises mandatory information regulated by legislative enactments of the state regarding the contents of nutrients. A restricted information capacity of the package features no opportunity to accommodate more exhaustive information on the advantages of food products for the health of potential consumers. The advantages of food products for the health, such as antioxidant capacity thereof is variable depending on quality and quantity composition of ingredients and technologies as exemplified by blended juices and enriched bakery products. It is impossible to accommodate the results of attaining maximum antioxidant capacity by the new food products and the visual presentation thereof in the margins of standard information panel of the package. A graphical representation of the received information is more relevant for the consumer, but it occupies the volume of information exceeding the margins not only of standard information panel of the package, but QR code too. It has been proposed with the use of QR coding to provide the consumer with a possibility of switching over to the information resource of the manufacturer of commodity group, which may comprise both inherent information and the information of external development agencies, including scientific publications on antioxidant properties of food products. The use of IOT will help provide consumers with more exhaustive information on healthy nutrition and stimulate acquisition of food products useful for health.

UV-C effect on microbial disinfection of pineapple-mango juice blend using Dean-vortex technology

UV-C effect on microbial disinfection of pineapple-mango juice blend using Dean-vortex technology

Comparison of UV-C and thermal pasteurisation for the quality preservation of pineapple-mango juice blend

Comparison of UV-C and thermal pasteurisation for the quality preservation of pineapple-mango juice blend

Quality Acceptability, Nutritional Composition and Antioxidant Properties of Carrot-Cucumber Juice

Fresh vegetables (carrot and cucumber) were juiced using a juice extractor. The extracted juice was then divided into five varying proportions: A (100% carrot juice), B (80% carrot, 20% cucumber), C (70% carrot, 30% cucumber), D (50% carrot, 50% cucumber) and E (100% cucumber). The juice blends were then analyzed for proximate, mineral and vitamin compositions. The phytochemical and the antioxidant properties were also determined. The proximate composition result revealed very high moisture (82.03–83.85%), relatively low carbohydrate (5.23–10.57%) and very low crude protein (1.75–4.14%) contents. For the micronutrients, potassium (14.70–32.10 mg/100 mL) and vitamin C (14.48–24.48 mg/100 mL) were more predominant when compared to the other micronutrients that were determined. The pH was mildly acidic (5.90–6.21) and the Brix value ranged between 3.51 and 7%. The antioxidant result indicated that better bioactivity could be obtained from the blends than the individual juices. While there were no statistically significant differences in the sensory properties of the juices, the 100% carrot juice was rated higher in all the attributes evaluated. Therefore, it was concluded that a blend of carrot and cucumber at a 50:50 ratio offered comparable nutritional and better antioxidative quality when compared to other blends.

Production, Chemical Properties and Sensory evaluation of Wine from blends of Gaper(Vitis vinifera) fruit, Pawpaw(Carica papaya) fruit and Tiger nut (Cyperus esculentus)tuber

Production of wine from sources other than grapes encourages wine makers as much as availability of different styles of wine. Pawpaw (Carica papaya ) is a tropical fruit commonly known for its nutritional and phytochemical values.Tiger nut (Cyperus esculentus) is a high-yielding, readilyavailable tuber which has lots of dietary and medicinal values. In this study, wine was produced from different blends of juice from grape (Vitis vinifera) fruit, pawpaw fruit and tiger nut tubers; and the quality of the wine evaluated. Healthy fruits and tiger nut obtained from a market in Ebonyi State, Nigeria were washed with clean water and ground with an electric blender until a homogenous pulp was obtained. Water (100cm3 ) was added to equal amount of each pulp and the mixture was filtered using a muslin cloth to obtain the juice. A solution of sugar in water (200g in 70cm3 ), 0.90g of Saccharomyces cerevisiae, ammonium phosphate (0.60g) and potassium phosphate (0.60g) were added and the mixture was allowed to ferment for 6 days (primary fermentation). The temperature, pH, specific gravity, total titrable acidity, and sugar level of the sample were determined after every 12 h. The wine was racked and allowed to ferment for 14 days (secondary fermentation). It was then left to clarify for three months. The clarified wine was left to mature for 6 months before the final physico-chemical and sensory evaluation were carried out. The results of the analysis revealed that the temperature of all the wine samples was 28.0oC. Grape and pawpaw wine had pH of 3.70, alcohol content of 17.00%, total acidity of 0.86% residual acidity of 0.32%, volatile acidity of 0.54% and specific gravity of 0.9776. Pawpaw and tiger nut wine had pH of 3.95 alcohol content of 16.06%, total acidity of 0.59%, residual acidity of 0.14%, volatile acidity of 0.255 and specific gravity of 0.9810. Grape, pawpaw and tiger nut wine had pH of 3.78, alcohol content of 17 81% total acidity of 0.72%, residual acidity of 0.30%, volatile acidity of 0.51% and specific gravity of 0.9760. Grape and tiger nut wine had pH of 3.90, alcohol content of 18.65% total acidity of 0.78%, residual acidity of 0.30%, volatile acidity of 0.48% and specific gravity of 0.9745.Although these values were comparable to those reported of good fruit wines, the highest alcohol content was obtained from a blend of grape and tiger nut juice. The sensory evaluation revealed that the attributes of the wines were acceptable to the majority of the respondents

Investigating consumer preferences and willingness to pay for Orange-fleshed Sweet potato (OFSP) juice in Rwanda

Abstract While micronutrient malnutrition has become a major public health problem in developing countries, consumption of biofortified foods such as orange fleshed sweet potato has proved to be cost effective means of addressing vitamin A deficiency. This paper describes consumer preferences and willingness to pay for Orange fleshed Sweet potato (OFSP) juice based on a structured survey and taste tests administered to 946 participants (384 female and 562 male) chosen at random in Rwanda. Four juices types were tested: two popular brands of 100% pineapple juice, one 100%-OFSP juice, and one 80% OFSP- 20% pineapple juice blend. Consumers ranked different attributes of each juice such as aroma, taste, color, “right” amount of sugar, and aftertaste using a Likert scale (1 to 5). Heckman two-stage probit model was used to analyze willingness to pay and a multinomial logit model was used to analyze the determinants of juice choice. Gender of the consumer, juice buying frequency, aroma, the taste of the juice, and vitamin A knowledge were positively associated with willingness to pay and juice choice. Without nutritional information on OFSP juice, the willingness to pay for the standard juices were statistically higher; but with nutritional information, the willingness to pay and choice of OFSP juice was significantly improved. It is concluded that nutrition information is an important factor influencing the acceptance and willingness to pay for OFSP juice.

Preparation of carbonated sugarcane juice beverages blended with fruit juices

Carbonated beverages are in great demand. The carbonated sugarcane beverage containing juices of kinnow, aonla, lemon, ginger and sugarcane was found to be the best among the various treatments. The pasteurization temperature of 82°C for 5 min was found optimum for blended juices and was used as base for the carbonated sugarcane juice beverage. The beverages carbonated at 80 psi carbonation level containing 60 ppm sodium benzoate were found superior. The beverages stored at refrigerated temperature (4°C) scored slightly higher sensory, physico-chemical and phytochemical parameters than the samples stored at room temperatures (30±4°C). The more CO2 retention was observed in refrigerated samples as compared to room temperature but statistically no significant difference was recorded.

Blended fruit and vegetable juices based on small-fruited apples, pumpkin, mountain ash and honey

Health and life expectancy of a person are largely related to the quality of food. Insufficient amount of biologically active substances (BAS) in the diet can lead to the development of alimentary diseases such as diabetes, cancer, diseases of the cardiovascular system. They are based on oxidative stress causing the development of inflammation. Natural antioxidants of plant origin – polyphenols and carotenoids reduce the risk of these diseases. To create blended juices of functional orientation, fruit and vegetable raw materials containing high concentrations of these compounds is suggested to use. Mountain ash and small-fruited Siberian apples are rich in flavonoids and hydroxycinnamic acids, pumpkin – carotenoids. Honey enriches the taste of the drink. Based on these components, recipes of blended fruit and vegetable juices with honey were created. Methods of research of organoleptic, physico-chemical and microbiological parameters, approved by normative and technical documentation, were used in the work. Four compositions that differ in the ratio of the ingredients were considered. According to the results of the organoleptic evaluation, the juice formulation was chosen, including 450 ml of juice of small-fruited apples, 400 ml of pumpkin juice, 100 ml of mountain ash syrup, 25 ml of honey and 25 ml of water on 1 liter juice. The main physicochemical indicators of the juice are determined: the mass fraction of soluble solids was 16.0%, the mass fraction of pulp was 4.5%, the mass fraction of sugar was 36.3%, the mass fraction of titrated acids in terms of malic acid was 0.45 %, pH was 3.7. Studies of microbiological safety were carried out. The check sample of juice corresponds to the industrial sterility indicators and regulatory and technical documentation.

Recipes and technology of juice based on plant raw materials of the Krasnoyarsk region

The results of the development of blended juice formulations of functional orientation with the use of plant raw materials of the Krasnoyarsk region and honey is shown in the given paper. With this purpose fruits and berries with a high content of vitamins, carotenoids, flavonoids and hydroxycinnamic acids were taken. According to the results of organoleptic evaluation, the juice formulation was chosen, including 375 ml of juice of small- fruited apples, 375 ml of pumpkin juice, 100 ml of sea buckthorn syrup, 100 ml of cranberry syrup, 25 ml of honey and 25 ml of water on 1 liter juice. The main physical and chemical indicators of juice: the mass fraction of soluble solids-15.8 %, the mass fraction of pulp-4.9 %, the mass fraction of sugar-40.5 %, the mass fraction of titrated acids-0.48 %, pH-3.4. The check sample corresponds to the industrial sterility indicators and regulatory and technical documentation.

High-pressure homogenisation combined with blanching to turn lettuce waste into a physically stable juice

Abstract Lettuce waste was blanched, ground, pre-homogenised at 40 MPa and subjected to high pressure homogenisation (HPH) at 80 (1 pass) and 150 MPa (1, 10 passes) to obtain an ingredient intended for blended juice formulation. When lettuce was subjected to HPH without previous blanching, physically unstable juices were obtained. By contrast, the combination of HPH with a blanching pre-treatment allowed obtaining juices showing no physical separation and characterised by a bright green colour. This high stability was attributed to the modification of lettuce fibrous structure and to a 90% and 60% inactivation of polyphenoloxidase and pectin methylesterase, respectively. Juices presented a phenolic content of 3.5 ± 1.3 mg GAE/100 g and a microbial count at least 1 Log lower than that of corresponding not-blanched samples and below limits usually indicated for juice quality (4.7 Log CFU/g). During storage (4 °C), no phase separation was observed but microbial counts rapidly increased, suggesting the need for a further stabilization step. Industrial application Solid waste generated by fresh-cut processing of lettuce could be valorised by the application of blanching and HPH, leading to an innovative ingredient potentially exploitable in the formulation of healthy blended juices, smoothies and comminuted food. This effort is worth making considering that HPH is being increasingly introduced as processing operation in various industrial contexts, showing good feasibility and cost effectiveness, and could allow valorisation of different leaf discards.

Exploratory analysis of the sensory attributes of american grape juice blends

Grape juices are blended in order to balance the organoleptic characteristics of juice, as well as to reduce off-season costs. The aim of this study was to evaluate the acceptance of consumers, through sensory analysis, of ‘Bordô’, ‘Niagara Rosada’, ‘BRS Nubia’ and ‘Isabel’ grape juices and their blends. The experiment was conducted during two periods. In the first, the grape juices analyzed were: ‘Niagara Rosada’ 100%, ‘Bordô’ 100%, ‘Isabel’ 100%, ‘Isabel’ 90% + ‘Bordô’ 10% and ‘Isabel’ 80% + ‘Bordô’ 20%. In the second, the following juices were evaluated: ‘Bordô’ 100%, ‘Niagara Rosada’ 100%, ‘Bordô’ 75% + ‘Niagara Rosada’ 25%, ‘Bordô’ 50% + ‘Niagara Rosada’ 50%, ‘Bordô’ 25% + ‘Niagara Rosada’ 75% and ‘BRS Nubia’ 100%. The juices were obtained by the ‘Welch’ process by steam entrainment. For the sensory evaluation, six tasters evaluated the following attributes in each period: color, aroma, flavor, body and overall acceptability, using a 7-point hedonic scale. The ‘Niagara Rosada’ juice 100% presents low acceptance, while the ‘Bordô’ and ‘Niagara Rosada’ juices up to 1:1 (v:v) show high acceptance, as well as ‘Bordô’ and ‘Isabel’ blends, confirming the importance of ‘Bordô’ juice for grape juice blends. The ‘Nubia’ juice 100% may be an alternative for grape juice blends due to its intense color.

Time-Trial Performance in World-Class Speed Skaters After Chronic Nitrate Ingestion.

Nitrate supplementation can increase tolerance to high-intensity work rates; however, limited data exist on the recovery of performance. The authors tested whether 5 d of nitrate supplementation could improve repeated time-trial performance in speed skating. Using a double-blind, placebo-controlled, crossover design, 9 international-level short-track speed skaters ingested 1 high (juice blend, ∼6.5mmol nitrate; HI) or low dose (juice blend, ∼1mmol nitrate; LO) per day on days 1-4. After a double dose of either HI or LO on day 5, athletes performed 2 on-ice 1000-m time trials, separated by 35 min, to simulate competition races. Differences between HI and LO were compared with the smallest practically important difference. Salivary [nitrate] and [nitrite] were higher in HI than LO before the first (nitrate: 81%, effect size [ES]: 1.76; nitrite: 72%, ES: 1.73) and second pursuits (nitrate: 81%, ES: 1.92; nitrite: 71%, ES: 1.78). However, there was no difference in performance in the first (LO: 90.92 [4.08]s; HI: 90.95 [4.06]s, ES: 0.01) or the second time trial (LO: 91.16 [4.06]s; HI: 91.55 [4.40]s, ES: 0.09). Plasma [lactate] measured after the trials (LO: 14.8 [1.1]mM; HI: 14.8 [1.2]mM, ES: 0.01) and at the end of the recovery period (LO: 9.8 [2.1]mM; HI: 10.2 [1.9]mM, ES: 0.05) was not different between treatments. Five days of high-dose nitrate supplementation did not change physiological responses and failed to improve single and repeated time-trial performances in world-class short-track speed skaters. These data suggest that nitrate ingestion up to 6.5mmol does not enhance recovery from supramaximal exercise in world-class athletes.

Microbial Safety and Quality Evaluation of UV-Treated, Cold-Pressed Colored and Turbid Juices and Beverages

The growing demand for fruit and vegetable juice blends, with improved nutritional and sensory attributes, has prompted the industrial adoption of nonthermal processing technologies, including UV light. Limited studies have explored conditions to overcome the well-known limitations of UV when treating liquid foods with a high content of particles that absorb or scatter UV light. This study addressed the effectiveness of the application of UV light, using a commercial processing unit, to inactivate pathogenic Escherichia coli O157:H7, Salmonella enterica (hereafter Salmonella), and Listeria monocytogenes, as well as spoilage microorganisms, in colored and turbid juices and beverages. The inactivation of cocktails of five strains (or serotypes) of E. coli O157:H7, Salmonella, and L. monocytogenes isolated from fruit- and vegetable-derived products linked to outbreaks was determined in seven colored and turbid cold-pressed juices and beverages. Juices and beverages were UV treated at a constant flow rate of 150 L/h through multiple consecutive passes. The inactivation of aerobic mesophilic bacteria, molds and yeasts, and lactic acid bacteria was also assessed at the cumulative dose that guaranteed a 5-log reduction of the most UV-tolerant pathogen for each product. A 5-log reduction of the three pathogens was achieved in all juices and beverages at a maximum cumulative UV dose of 12.0 ± 0.6 mJ/cm2. The dose required to ensure the targeted reduction varied depending on the tested product and the inoculated pathogen. The reduction of aerobic mesophiles, molds and yeasts, and lactic acid bacteria varied from 0.5 to 3.6, from 0.2 to 2.0, and from 0.5 to 3.6 log CFU/mL, respectively. Thus, the proposed treatment represents a suitable processing alternative to ensure the safety and extend the shelf life of colored and turbid cold-pressed juices and beverages.

Sensory analysis of juice blend containing isomalto-oligosaccharides produced by fermentation with Weissella cibaria.

This study aimed at producing isomaltooligosaccharides in juice blends using orange juice and malt extract and assessing their acceptability. Different blend formulations were prepared and fermented, varying the concentration of orange juice, sucrose and malt extract. Dextransucrase from Weissella cibaria 10 M was used to enzymatically synthesize α(1-6) linked glucan-oligosaccharides by transglycosylation reactions, with maltose as acceptor carbohydrate and sucrose as donor. The optimal yield of oligosaccharides was after 24 h, producing 19.4 g/L of oligosaccharides (degree of polymerization 3) from 36 g/L maltose and 19 g/L sucrose. All the blend proved to be good alternatives for synthesizing isomalto-oligosaccharides with different degrees of polymerization. Sensory analysis showed good average acceptability compared to natural orange juice, achieving scores of around 6 on a 9-point hedonic scale. In a comprehensive analysis, juice blends containing orange juice and malt extract with Weissella cibaria to produce oligosaccharides exhibited good sensory indicators as an innovative prebiotic beverage. A prebiotic oligosaccharide beverage can be produced by enzymatic synthesis of oligosaccharides with different degrees of polymerization.

Consumer Acceptance of Orange Juice Mixed with Water Mint Leave Extract

Aseptic processing is focused only fruit juices, but the processing of strengthful fruit, like fruit juice fortified with other beneficial herbs by tetrapack processing has not been attempted. The aim of the study to introduce a new form of orange juice with a good nutritional value. Orange-Mint leaves juice was formulated using different addition percentages of mint leaves extract. The juice was aseptically processed, packed in glass bottles under sterilized environment and sterilized at 70°C for 15min then storage at 5°C for 3 months. All of the properties of juice "physicochemical, nutritional values, microbiological and sensory" was determined. The results showed that there was no difference in pH, total soluble solids, ash, and total acidity in all samples moreover, the orange juice with 15% of mint leaves extract recorded the best values of sensory evaluation, on the other hand, it was recorded lower values of vitamin C and total phenolic compound than fresh or pasteurized orange juice because of increasing in addition % of mint leaves extract to orange juice. The sensory properties of juice samples were not remarkable any changes during storage. The results indicated that the juice had a good acceptability up to 3 months of storage at 5°C. Now, the consumer is interested with nutritional and healthy foods, because functional foods reduce the health problems, as described in various patents. So, the Orange-Mint leaves blended juice will be a good option for the consumer.

Development and quality assessment of a turbid carrot-orange juice blend processed by UV-C light assisted by mild heat and addition of Yerba Mate (Ilex paraguariensis) extract

Carrot-orange juice processed by UV-C (10.6 kJ/m2) assisted with mild heat (H, 50 °C) and yerba mate addition (E) was obtained. UV-C/H + E treated juice was examined for native flora, polyphenol content (PC), total antioxidant activity (TAA), colour, turbidity, °Brix and pH along storage (4 °C). Consumer profiling studies were performed. UV-C/H + E provoked 2.6–5.7 native flora log reductions, preventing from recovery during 24 day-storage. The UV-C/H + E juice exhibited a significant increase in PC (720.2 µg/mL) and TAA (5.5 mg/mL) compared to untreated (PC = 205.0 µg/mL/TAA = 0.7 mg/mL) and single treated juices (PC = 302.1–408.0 µg/mL/TAA = 0.7–2.4 mg/mL), remaining constant throughout storage. UV-C/H + E juice exhibited scarce changes in colour. Nevertheless, increases in °Brix and turbidity were observed compared to single treatments. A cluster sensory analysis revealed that one group showed a marked interest in UVC/H + E beverages with herbal taste and strong aroma. CATA question revealed that some improvements should be introduced in order to satisfy the consumers' ideally beverage.

Wine Produced From Fermentation of Honey Slurry and Dates Palm Fruit Juice Blend Using Saccharomyces cerevisiae Isolated From Palm Wine

This study aimed at evaluating the fermentative performance of Saccharomyces cerevisiae isolated from palm wine on honey slurry and dates palm fruit juice blend for wine production. The yeast was isolated from palm wine on saboraud dextrose agar (SDA) using pour plate technique and was identified using microscopic and standard biochemical techniques. Physicochemical parameters were determined during 21 days fermentation using standard procedures. The proximate composition of the blend before fermentation and the produced wine was evaluated. The microbiological and sensory evaluations of the produced wine was investigated. The yeast strain was identified as Saccharomyces cerevisiae. The fermentation recorded total viable yeast count from 2.5x106 to 13.0 x 106 CFU/mL. The physicochemical parameters revealed that during the fermentation, the pH values ranged from 4.3 to 5.4, percentage titratable acidity (TTA) ranged from 5.2 to 9.4. The temperature of the fermentation ranged from 24 to 29°C and the specific gravity values decreased steadily from 1.100 to1.010. Proximate composition of the date fruit revealed low protein content between 1.00 and 1.05, but high moisture content (82.43%). The produced wine contained reasonable amount of total carbohydrate A (19.59%), B (25.28%), C (22.7%) and D (21.88%). There were variations on other proximate compositions observed. The produced wine was not contaminated with bacteria and fungi. Sensory evaluation of the wine revealed acceptable aroma/flavor and taste. This study indicates that Saccharomyces cerevisiae strain from the palm wine have good fermentative performance which suggested that it could be used for fruit wine production and other industrial applications preceded by further experiments.