scholarly journals Impact of heat-assisted HVED plasma treatment on quality of apple juice

2020 ◽  
Vol 15 (3-4) ◽  
Author(s):  
Tomislava Vukušić Pavičić ◽  
Danijela Šeremet ◽  
Nadica Maltar- Strmečki ◽  
Višnja Stulić ◽  
Zoran Zorić ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
High Voltage ◽  
Electrical Discharge ◽  
Apple Juice ◽  
Phenolic Content ◽  
Plasma Reactor ◽  
Quality Parameters ◽  
Juice Quality ◽  
Hybrid Plasma

High voltage electrical discharge (HVED) plasma processing receives more and more attention due to its potential to assure microbial safety and retain quality of treated products. The influence of combined thermal and high voltage electrical discharge plasma treatment on apple juice quality was investigated. Apple juice samples were treated under defined plasma treatment parameters of time (3, 6 and 9 min), frequency (60, 90 and 120 Hz) and temperature (30, 40 and 50 oC) in hybrid plasma reactor. Prior to treatment, juice samples were inoculated with Saccharomyces cerevisiae ATCC 204508 to investigate inactivation possibilities of plasma treatment on yeasts as common juice microorganisms. Quality parameters (pH, electrical conductivity, phenolic content and antioxidant activity) of treated and untreated apple juice were investigated and compared. Results have shown effectiveness of HVED plasma treatment in yeast inactivation up to 6.6 log10 in 9 min of treatment at 120 Hz and temperature of 40 oC. In treated samples there were no significant changes in phenolic content.

Variation in Postharvest Quality Attributes of Fresh Cowpea (Vigna unguiculata L.) Beans Harvested from Different Crop Mulching Regime

2021 ◽  
Author(s):  
Pankaj Kumar Kannaujia ◽  
Sakharam Kale ◽  
Ajinath Dukare ◽  
Vijay Singh Meena ◽  
Prerna Nath ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Quality Parameters ◽  
Postharvest Quality ◽  
Total Phenolic ◽  
Organic Mulch ◽  
Agronomic Practices ◽  
Total Antioxidant ◽  
Wheat Straw Mulch ◽  
Physiological And Biochemical

Background: Present study, aimed to assess effect of organic and inorganic crop mulching on physical, physiological and biochemical quality of fresh cowpea beans.Methods: Cowpea (cv. Kashi Kanchan bush-type) was grown during two consecutive seasons from April 2018 to July 2019 under four different mulching treatments. Mulching treatments included no mulch; wheat straw mulch (organic mulch); black mulch and silver mulch. Black and silver mulches were made of 25 microns LDPE sheet. Cowpea was grown as per standard agronomic practices and physical, biochemical and postharvest quality parameters of beans were evaluated.Result: Results indicated that bean length (28.7cm) was highest under silver mulch whereas bean thickness (9.10mm), width (9.29mm) and 100 bean weight (1094.5g) were highest under organic mulch. Likewise, protein content (28.63%), total phenolic content (17.0µg GAE/100g) and total antioxidant activity (46.84µmol trolox equiv./100g) were found highest in beans produced under organic mulch. Overall results demonstrated that crop mulching could be used for enhancing the antioxidants, phenolic content of cowpea beans.

scholarly journals Factors affecting the quality of apple juice

2021 ◽  
Vol 34 ◽  
pp. 06011
Author(s):  
Svetlana Popel ◽  
Pavel Epifanov ◽  
Larisa Yushan
Keyword(s):  
Heat Treatment ◽  
Waiting Time ◽  
Apple Juice ◽  
Juice Quality ◽  
Regression Equations ◽  
Factors Affecting ◽  
Technological Factors ◽  
Factors Of Production

This study reflects the research of technological factors of production that affect the quality of apple juice: temperature and time of sterilization, the influence of the type of used wort: gravity or a mixture of gravity and press fraction; the waiting time of the wort before the first heat treatment; as well as the presence of preheating. Regression equations have been developed that link the studied parameters and indicators of juice quality. The quantitative values of the characteristics of apple juice in the stated ranges, depending on the studied parameters, can be calculated by substituting the corresponding values in natural units into the developed regression equations.

Reducing Patulin Contamination in Apple Juice by Using Inactive Yeast

2011 ◽  
Vol 74 (1) ◽  
pp. 149-153 ◽  
Author(s):  
TIANLI YUE ◽  
QINFANG DONG ◽  
CAIXIA GUO ◽  
RANDY W. WOROBO
Keyword(s):  
Apple Juice ◽  
Fruits And Vegetables ◽  
Reduction Rate ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Fungal Species ◽  
Juice Quality ◽  
Yeast Strains ◽  
Wide Range ◽  
Apple Products

The mycotoxin, patulin (4-hydroxy-4H-furo[3,2c]pyran-2[6H]-one), is a secondary metabolite produced mainly in rotten parts of fruits and vegetables, most notably apples and apple products, by a wide range of fungal species in the genera Penicillium, Aspergillus, and Byssochlamys. Due to its mutagenic and teratogenic nature and possible health risks to consumers, many countries have regulations to reduce levels of patulin in apple products. In the present study, reduction of patulin contamination in apple juice by using 10 different inactivated yeast strains was assessed. Our results indicated that nearly twofold differences in biomass existed among the 10 yeast strains. Eight of the 10 inactivated yeast strains could provide >50% patulin reduction in apple juice within 24 h, with the highest reduction rate being >72%. Furthermore, juice quality parameters, i.e., degrees Brix, total sugar, titratable acidity, color value, and clarity, of the treated apple juice were very similar to those of the untreated patulin-free juice. Potential applications of using inactivated yeast strain for patulin control are also discussed.

scholarly journals Quality of ‘Royal Gala’ cut apple during osmotic dehydration

2020 ◽  
Vol 23 ◽  
Author(s):  
Bert Pieters ◽  
Fernanda Rosa Assis ◽  
Rui Manuel Santos Costa Morais ◽  
Alcina Maria Miranda Bernardo Morais
Keyword(s):  
Atmospheric Pressure ◽  
Phenolic Content ◽  
Osmotic Dehydration ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Color Changes ◽  
Sucrose Solutions ◽  
Osmotic Agent ◽  
Best Fit

Abstract The present work aimed to evaluate quality parameters of ‘Royal Gala’ apple cubes during osmotic dehydration (OD). We investigated the following OD conditions: osmotic agent, pressure, and temperature. The osmotic agent, being lower after OD with sorbitol than sucrose solutions, mainly influenced the water activity of the product. The color changes increased with increased temperature and were higher in vacuum experiments than at atmospheric pressure. In general, we recommend OD at 25 °C and atmospheric pressure for the preservation of the total phenolic content (TPC) and antioxidant activity (AA) of apple cubes during the process. Peleg’s model was found to provide the best fit of TPC and AA data.

scholarly journals Influence of Combined Effect of Ultra-Sonication and High-Voltage Cold Plasma Treatment on Quality Parameters of Carrot Juice

Foods ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 593 ◽  
Author(s):  
Umair Muhammad ◽  
Jabbar Saqib ◽  
Ahmed M. Senan ◽  
Tayyaba Sultana ◽  
Mustapha M. Nasiru ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Chlorogenic Acid ◽  
High Voltage ◽  
Cold Plasma ◽  
Quality Parameters ◽  
Combined Effect ◽  
Plate Count ◽  
Carrot Juice ◽  
Dbd Plasma ◽  
Total Carotenoids

Influence of the combined effect of ultra-sonication (US) and high-voltage cold plasma treatment (HVCP) on the quality parameters of fresh carrot juice has been studied. During the treatment of ultra-sonication, carrot juice was subjected to a 0.5 inch probe for 3 min by adjusting the pulse duration 5 s on and off at 20 kHz frequency, amplitude level 80%. The ultrasound intensity was measured by using a thermocouple and was 46 Wcm−2. The temperature was maintained at 10 °C by an automatic control unit. During the treatment of HVCP, carrot juice was then subjected to dielectric barrier discharge (DBD) plasma discharge at 70 kV voltage for 4 min. Significant increases were observed when HVCP treated carrot juice was tested against total carotenoids, lycopene, and lutein when compared to the control treatments. Moreover, this increase was raised to its highest in all pigments, chlorogenic acid, sugar contents, and mineral profile, as the results of ultra-sonication when combined with high voltage atmospheric cold plasma (US-HVCP). Whereas, a significant decreased was observed in Mg, total plate count, yeast, and mold after US-HVCP treatment. Furthermore, results indicated that the combined effect of US-HVCP treatment has improved the quality and led to a higher concentration of lycopene, lutein, chlorogenic acid, and mineral compounds (Na, K, and P). Therefore, the findings of the current study suggested that US-HVCP treatment is a novel combined technique that could provide better quality and more stability during the processing of carrot juice with better physicochemical properties and bio-available nutrients, so this novel processing technique could serve as an alternative to traditional processes.

Sequential Application of High-Voltage Electric Field Cold Plasma Treatment and Acid Blanching Improves the Quality of Fresh Carrot Juice (Daucus carota L.)

2020 ◽  
Vol 68 (51) ◽  
pp. 15311-15318
Author(s):  
Muhammad Umair ◽  
Saqib Jabbar ◽  
Mustapha M. Nasiru ◽  
Ahmed M. Senan ◽  
Hong Zhuang ◽  
...  
Keyword(s):  
Electric Field ◽  
Plasma Treatment ◽  
High Voltage ◽  
Daucus Carota ◽  
Cold Plasma ◽  
Carrot Juice ◽  
Daucus Carota L

Effect of Harvest Time on Quality of Sugar Cane Cultivars

2013 ◽  
Vol 824 ◽  
pp. 293-300 ◽  
Author(s):  
T. Yirsaw ◽  
K. Woldetsadik ◽  
T.S. Workneh
Keyword(s):  
Block Design ◽  
Quality Parameters ◽  
Sugar Yield ◽  
Juice Quality ◽  
Harvest Time ◽  
Harvesting Time ◽  
Sugarcane Varieties ◽  
Randomized Complete Block Design ◽  
Stalk Diameter

Three commercial sugarcane varieties such as NCO-334, B52-298 and N14 were grown at Finchaa Cane Plantation, Ethiopia to determine the optimum harvest age for cane and sugar yields. Treatments consisted of factorial combination of varieties and five levels of harvest age were arranged in Randomized Complete Block Design with three replications. The varieties differed in stalk diameter and weight, and millable stalk number. Improvements in internodes number, stalk diameter and weight were increased with harvest age whereas internodes length and millable stalk number decreased with delay in harvesting. Varieties produced better juice quality in canes harvested at 17 months. NCO-334 attained its peak superior quality at the age of 15 months. This preliminary data on some indicator quality parameters imply that NCO-334 could be harvested at 15 months age in order to maximize sugar yield. However, more experiments are required to confirm the effect of harvesting time and variety on cane and sugar yield. Therefore, more research on detecting other quality parameters focusing on cane and sugar yield is recommended.

scholarly journals APPLE JELLY PREPARATION: VARIABLES AND THE QUALITY OF THE FINAL PRODUCT

2004 ◽  
Vol 01 (1) ◽  
pp. 31-35
Author(s):  
Gabriel RÜBENSAM ◽  
Adriana BARBOSA ◽  
Cibele BATISTA ◽  
Daniela VEIGA ◽  
Rodrigo BRAMBILLA ◽  
...  
Keyword(s):  
Citric Acid ◽  
Gallic Acid ◽  
Apple Juice ◽  
Phenolic Content ◽  
Preparation Process ◽  
The Third

In this study, variables of the apple jelly preparation process were analyzed, such as pH, amount of pectin, palatability, consistency and the variation of the phenolic content between fresh apple juice and its jelly. After processing the fruits, equal volumes of juice were separated into four different containers (PA, A, P and Puro). In the first (PA), commercial sucrose, citric acid and neutralized pectin were added, in the second (A) commercial sucrose and citric acid, in the third (P) commercial sucrose and neutralized pectin and, in the fourth (Pure), only commercial sucrose. As for the phenolic content (in gallic acid equivalents), 264 g/mL was identified in R1, 244.8 g/mL in R2, 120 g/mL in R3 and 236.5 g/mL in R4 after cooking for 20 minutes at 95 °C and, for fresh juice, 283.2 g/mL. After cooking and cooling the jams, there was an increasing consistency in the PA> P = pure> A form and better palatability in the pure> PA> P >> A.

Quality of ram spermatozoa separated with modified swim up method

2018 ◽  
Vol 33 (2) ◽  
pp. 62-70 ◽  
Author(s):  
A Hossain ◽  
MM Islam ◽  
F Naznin ◽  
RN Ferdousi ◽  
FY Bari ◽  
...  
Keyword(s):  
Semen Quality ◽  
Membrane Integrity ◽  
Quality Parameters ◽  
Fluid Medium ◽  
Normal Morphology ◽  
The Mean ◽  
Mass Activity ◽  
Fresh Semen ◽  
Artificial Vagina

Semen was collected from four rams, using artificial vagina and viability%, motility% and plasma membrane integrity% were measured. Fresh ejaculates (n = 32) were separated by modified swim-up separation using modified human tubal fluid medium. Four fractions of supernatant were collected at 15-minute intervals. The mean volume, mass activity, concentration, motility%, viability%, normal morphology and membrane integrity% (HOST +ve) of fresh semen were 1.0 ± 0.14, 4.1 ± 0.1 × 109 spermatozoa/ml, 85.0 ± 1.3, 89.4 ± 1.0, 85.5 ± 0.7, 84.7 ± 0.5 respectively. There was no significant (P>0.05) difference in fresh semen quality parameters between rams. The motility%, viability% and HOST +ve % of first, second, third and fourth fractions were 53.4 ± 0.5, 68.2 ± 0.3, 74.8 ± 0.3 and 65.5 ± 0.4; 55.5 ± 0.4, 66.2 ± 0.4, 74.5 ± 0.3 and 73.6 ± 0.3 and 66.7 ± 0.5, 66.8 ± 0.5, 65.2 ± 0.4 and 74.7 ± 0.5 respectively. The motility%, viability% and membrane integrity% of separated semen samples differed significantly (P<0.05) between four fractions. The mean motility% and viability% were significantly higher (P<0.05) in third fraction (74.8 ± 0.3%), whereas the mean HOST +ve% was significantly higher (P<0.05) in fourth fraction (74.7 ± 0.5). All quality parameters of separated spermatozoa were significantly (P<0.05) lower than that of fresh semen. The pregnancy rates were higher with fresh semen (71%) in comparison to that of separated sample (57%).Bangl. vet. 2016. Vol. 33, No. 2, 62-70

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

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