scholarly journals Effect of ozone treatment on the microstructure, chemical composition and sensory quality of apple fruits

2018 ◽  
Vol 25 (3) ◽  
pp. 252-267 ◽  
Author(s):  
Karina Juhnevica-Radenkova ◽  
Vitalijs Radenkovs ◽  
Karlis Kundzins ◽  
Dalija Seglina
Keyword(s):  
Sensory Quality ◽  
Positive Impact ◽  
Epicuticular Wax ◽  
Biologically Active ◽  
Ozone Treatment ◽  
Apple Cultivar ◽  
Cell Integrity ◽  
Long Term Storage ◽  
And Control

The aim of this study was to assess the effect of O3 treatment on the quality of different cultivars of apples ( Malus domestica Borkh.). Apples were stored for six months at different concentrations of ozone. During the research, minor differences between ozone-treated and control fruits were found in terms of cell integrity and epicuticular wax structure. Ozone application for apple treatment could accelerate the natural ageing of the waxes found on the surface of apples, thereby reducing the thickness of the waxes. The rate of degradation for the epicuticular wax was found to be cultivar dependent. After six months of storage, the ozonation process prevented the decay of ‘Iedzenu’, ‘Auksis’ and ‘Belorusskoje Malinovoje’ apple cultivars, but it accelerated damage in the ‘Gita’ apple cultivar. A positive impact of ozone during long-term storage was found regarding flesh firmness of ‘Iedzenu’ apple cultivar samples subjected to O3 exposure at concentrations of 0.8 ppm and 3.0 ppm. In other cultivars of apples, significant differences between ozonation and cold storage (control) were not found. In general, ozone treatment has a potential to be applied in order to maintain the sensory quality and biologically active compound level in apples during six-month storage; however, the degree of effectiveness depends both on the cultivar and on the concentration of ozone.

Efficacy of Ozone in Killing Listeria monocytogenes on Alfalfa Seeds and Sprouts and Effects on Sensory Quality of Sprouts†

2003 ◽  
Vol 66 (1) ◽  
pp. 44-51 ◽  
Author(s):  
W. N. WADE ◽  
A. J. SCOUTEN ◽  
K. H. McWATTERS ◽  
R. L. WICK ◽  
A. DEMIRCI ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Sensory Quality ◽  
Ozone Treatment ◽  
Water Control ◽  
Physical Damage ◽  
Significant Deterioration ◽  
Naturally Occurring ◽  
Alfalfa Seeds ◽  
Ozonated Water

A study was done to determine the efficacy of aqueous ozone treatment in killing Listeria monocytogenes on inoculated alfalfa seeds and sprouts. Reductions in populations of naturally occurring aerobic microorganisms on sprouts and changes in the sensory quality of sprouts were also determined. The treatment (10 or 20 min) of seeds in water (4°C) containing an initial concentration of 21.8 ± 0.1 μg/ml of ozone failed to cause a significant (P ≤ 0.05) reduction in populations of L. monocytogenes. The continuous sparging of seeds with ozonated water (initial ozone concentration of 21.3 ± 0.2 μg/ml) for 20 min significantly reduced the population by 1.48 log10 CFU/g. The treatment (2 min) of inoculated alfalfa sprouts with water containing 5.0 ± 0.5, 9.0 ± 0.5, or 23.2 ± 1.6 μg/ml of ozone resulted in significant (P ≤ 0.05) reductions of 0.78, 0.81, and 0.91 log10 CFU/g, respectively, compared to populations detected on sprouts treated with water. Treatments (2 min) with up to 23.3 ± 1.6 μg/ml of ozone did not significantly (P > 0.05) reduce populations of aerobic naturally occurring microorganisms. The continuous sparging of sprouts with ozonated water for 5 to 20 min caused significant reductions in L. monocytogenes and natural microbiota compared to soaking in water (control) but did not enhance the lethality compared to the sprouts not treated with continuous sparging. The treatment of sprouts with ozonated water (20.0 μg/ml) for 5 or 10 min caused a significant deterioration in the sensory quality during subsequent storage at 4°C for 7 to 11 days. Scanning electron microscopy of uninoculated alfalfa seeds and sprouts showed physical damage, fungal and bacterial growth, and biofilm formation that provide evidence of factors contributing to the difficulty of killing microorganisms by treatment with ozone and other sanitizers.

scholarly journals Urgensi Profesionalisme Guru di Pendidikan Sekolah Dasar

2017 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Hamni Fadlilah Nasution
Keyword(s):  
Elementary School Teachers ◽  
Human Development ◽  
Professional Competence ◽  
Positive Impact ◽  
Education Quality ◽  
Learning Tasks ◽  
Educational Supervision ◽  
Teacher Coaching ◽  
And Control

The low quality of education in Indonesia can also be known from the Human Development Report, which states that the Human Development Index for 2004 Indonesia position is ranked 111th out of 177 countries surveyed. Teachers play an important role in the progress of education quality. Professional teachers are teachers who are able to master and control changes with science and technology insights. Professional teachers are teachers who are able to run the competencies they have. Four components of the competency standards that teachers must possess are: Personality competence, Pedagogic competence, Professional competence and social competence. The development of professionalism of elementary school teachers can also be pursued through a system called educational supervision, certification, with a professional teacher coaching system (SPP-Teacher) and learning tasks. The coaching program is useful to improve the quality of teachers so that a positive impact on the success of education

scholarly journals Supervision and Control of The Government Internal Supervisory Apparatus in The Implementation of Regional Autonomy

2019 ◽  
Vol 1 (1) ◽  
pp. 56-69
Author(s):  
Engkus ◽  
Cecep Wahyu Hoerudin ◽  
Dedeng Yusuf Maolani
Keyword(s):  
Local Governments ◽  
Public Services ◽  
Negative Impact ◽  
Positive Impact ◽  
Public Preference ◽  
Regional Autonomy ◽  
The Government ◽  
Study Techniques ◽  
And Control

The main problem of this regional autonomy research is the low competence of human resources in the New Autonomous Region of  Pangandaran Regency, which is caused by its suboptimal implementation. The purpose of this study is to describe the implementation of regional autonomy and its impact. The method used is a qualitative approach with observation, interview and library study techniques. This study concludes that the implementation of regional autonomy in Pangandaran is not yet optimal. The positive impact of regional autonomy can increase the efficiency and responsiveness of government in public services with public preference, and arouse the spirit of competition and innovation among local governments. The negative impact, the quality of public services is low, due to the transfer of authority which is often misunderstood or misused so that adequate and formal supervision and control is needed both formally and informally as well as synergy between local, provincial and central governments.

scholarly journals Governance and Tax Revenue in Asean Countries

2015 ◽  
Vol 6 (2) ◽  
pp. 76-88
Author(s):  
Makmun Syadullah
Keyword(s):  
Law Enforcement ◽  
Positive Impact ◽  
Descriptive Analysis ◽  
Political Stability ◽  
Tax Revenue ◽  
Negative Effects ◽  
Asean Countries ◽  
And Control ◽  
The Relationship

Tax revenue is influenced by many factors. Existing studies reveal that political stability, level of corruption, quality of the policy, income per capita, share of agriculture to the GDP, and market openness are some of the factors influencing tax revenue. This study aims to analyze the influence of governance by using some indicators, such as political stability, government effectiveness, quality of regulation, law enforcement accountability and control on corruption in tax area through empirical analysis of ASEAN countries. Descriptive analysis and causality methods are employed in this study. causality method is used to determine the relationship between observed variables using panel regression. The results of the study indicate that the controlon corruption, voice and accountability and political stability variables have significant negative effects on the tax ratio, while rule of law and quality of regulatory variables have positive impact on the tax ratio.

scholarly journals GRASSES AND LEGUMES AS COVER CROPS AFFECT MICROBIAL ATTRIBUTES IN OXISOL IN THE CERRADO (SAVANNAH ENVIRONMENT) IN THE NORTHEAST REGION1

2020 ◽  
Vol 33 (1) ◽  
pp. 31-42 ◽  
Author(s):  
SARAH PRISCILLA DO NASCIMENTO AMORIM ◽  
CÁCIO LUIZ BOECHAT ◽  
LIZANDRA DE SOUSA LUZ DUARTE ◽  
CÍNTIA BEZERRA ROCHA ◽  
FILIPE SELAU CARLOS
Keyword(s):  
Cover Crops ◽  
Environmental Changes ◽  
Positive Impact ◽  
N Dynamics ◽  
Carbon And Nitrogen ◽  
Soil Microbial ◽  
C And N ◽  
And Control ◽  
Crotalaria Spectabilis

ABSTRACT The cover crop straw may cause changes in the microbial activity and population, with repercussions on environmental changes and on the C and N dynamics, providing important information for the planning of adequate land use in the Cerrado. The objective of this study was to evaluate the effect of straw of cover crops on the soil microbial attributes and quality of organic matter. Experimental units consisted of 100 g of sieved soil placed in small plastic cups mixed with straw from cover plants. Treatments were distributed in a CRD, in a factorial scheme of 7 x 7 + 1, with seven types of straw, evaluated at 7, 14, 21, 28, 42, 63 and 105 days after incubation, and control without straw, with three replicates. The qCO2 ranged from 0.1 (Crotalaria spectabilis at 14 days) to 5.1% (Cajanus cajan ‘IAPAR 43’ at 42 days). The organic carbon and nitrogen reservoir are differently affected by straw of legumes and grasses on the dates. The incorporation of Brachiaria brizantha and Mucuna aterrima had a positive impact on the microbial attributes until the 21st incubation (qCO2, Cmic and Nmic), with little loss of carbon dioxide and growth of the microbial population. All the evaluated species presented a potential to be used in crop rotation systems, enabling no-tillage systems in the Cerrado of Piauí. However, it is recommended to select species according to specific purposes. Thus, the use of cover crops is an important tool for increasing the biological quality of Brazilian northeastern cerrado soils.

scholarly journals Sensory Quality of Nonfat Dry Milk after Long-Term Storage

1985 ◽  
Vol 68 (8) ◽  
pp. 1931-1935 ◽  
Author(s):  
N.R. Driscoll ◽  
C.P. Brennand ◽  
D.G. Hendricks
Keyword(s):  
Sensory Quality ◽  
Long Term Storage ◽  
Dry Milk ◽  
Nonfat Dry Milk ◽  
Term Storage

scholarly journals Effect of Proteolytic Enzymes (Bromelain and Papain) on Sensory and Chemical Quality of Sukuti (an Indigenous Dried Meat Product of Nepal)

2021 ◽  
Vol 5 (01) ◽  
pp. 8-14
Author(s):  
Kabindra Bhattarai ◽  
Suman Lamichhane
Keyword(s):  
Sensory Quality ◽  
Proteolytic Enzymes ◽  
Meat Product ◽  
Collagen Content ◽  
Enzyme Treatment ◽  
Local Market ◽  
Untreated Sample ◽  
Overall Acceptability ◽  
And Control

The present work was undertaken to compare the effect of bromelain and papain on the sensory quality of sukuti (Nepalese indigenous dried buffalo meat). Buffalo lean meat (round cut) was purchased from the local market of Dharan and used for the preparation of sukuti after injection of 10% m/m enzyme (bromelain and papain) solution at the concentration (0-100 mg/L) and resting for 4h followed by drying at 65°C up to the moisture of 5%. The optimized concentration of each enzyme was selected by sensory evaluation based on color, flavor, texture, and overall acceptability. The proximate composition, collagen content, and collagen solubility were studied for two optimized samples with enzyme treatment and control. The best tenderizing effect of papain and bromelain enzyme was found at 40 mg/L and 10 mg/L respectively from the sensory analysis and the sensory attributes for these concentrations were significantly (p<0.05) higher than other samples. The soluble collagen content increased from 0.44 mg/g tissue in untreated meat to 0.52 for bromelain treated and to 0.98 mg/g for papain treated samples. The collagen solubility for the untreated sample was 4.74% which increases to 7.80% for bromelain and 13.82% for papain-treated samples. The protein content of optimized papain and bromelain treated samples was significantly decreased (p<0.05) from 82.44 to 80.25% and 81.43% respectively for papain and bromelain treated samples. There were no significant changes in fat, ash, and moisture on enzyme treatment.

scholarly journals Effect of Insecticidal Atmospheres at High Temperature Combined with Short Cold-quarantine Treatment on Quality of ‘Valencia’ Oranges

HortScience ◽  
2010 ◽  
Vol 45 (10) ◽  
pp. 1496-1500 ◽  
Author(s):  
Adriana Contreras-Oliva ◽  
Cristina Rojas-Argudo ◽  
María B. Pérez-Gago
Keyword(s):  
High Temperature ◽  
Nutritional Quality ◽  
Sensory Quality ◽  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Quality Parameters ◽  
Negative Effects ◽  
Valencia Orange ◽  
And Control

The combination of insecticidal atmosphere (IA) with short cold exposure periods has been effective in controlling the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). In the present work, ‘Valencia’ orange quality was assessed on fruit exposed to IA (95% CO2) at 23, 28, or 33 °C for 20 h; next stored at 1 °C for 8, 16, or 24 days; and then kept at 20 °C for 7 days to simulate shelf life. Physicochemical, sensory, and nutritional quality parameters were analyzed on treated and control (air-exposed) fruit. No significant negative effects on fruit quality were observed in IA-treated ‘Valencia’ oranges. In addition, the exposure of oranges to 95% CO2 at 28 °C reduced the weight and firmness loss compared with fruit kept in air. Ethanol content increased in the fruits exposed to 95% CO2 at 28 or 33 °C, but sensory quality was not adversely affected.

scholarly journals Evaluation of Dosidicus gigas Skin Extract as An Antioxidant and Preservative in Tuna Pâté

Foods ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 693
Author(s):  
Jesús Enrique Chan-Higuera ◽  
Josafat Marina Ezquerra-Brauer ◽  
Leontina Lipan ◽  
Marina Cano-Lamadrid ◽  
Roberta Rizzitano ◽  
...  
Keyword(s):  
Lipid Oxidation ◽  
Sensory Quality ◽  
Quality Attributes ◽  
Yellowfin Tuna ◽  
Biologically Active ◽  
Skin Extract ◽  
Microbiological Analysis ◽  
Dosidicus Gigas ◽  
Tuna Fish ◽  
And Control

A strategy for food preservation, based on a methanol–HCl squid skin extract (Dosidicus gigas) (JSSE), was evaluated at two concentrations in yellowfin tuna fish pâtés, which were stored at 4 and 8 °C for 20 day. The JSSE was characterized by determining its antioxidant and mutagenic activities. A yellowfin tuna pâté was elaborated, with and without the addition of the JSSE. An affective sensory analysis was performed to establish consumers’ preferences. During a 20-day storage period, the water activity (aw), pH, color difference (ΔE*ab), microbiological analysis, lipid oxidation and sensory quality attributes were evaluated, and the results were compared with the results of the butylated hydroxyanisole (BHA) and control treatments. The JSSE showed antioxidant activity against the 2,2-diphenyl-1-picrylhydrazyl (DPPH●+) and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS●) radicals and did not induce mutation, according to the Ames’ Salmonella test, nor chromosomal abnormalities, according to the onion root-tip cell assay. The consumer analysis demonstrated a higher preference for the pâté with the added JSSE in seven out of the eight evaluated attributes. During storage, the JSSE neither had an impact on aw nor pH, maintained lower ΔE*ab values, inhibited the microbial activity and lipid oxidation (unlike the control pâté), and preserved the sensory quality attributes, unlike the BHA and control treatments. This study showed that the JSSE has biologically active pigments that can act as antioxidants and antimicrobials in yellowfin tuna fish pâtés.

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