scholarly journals Oxidative Stability at Different Storage Conditions and Adulteration Detection of Prickly Pear Seeds Oil

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Fatima Ettalibi ◽  
Abderraouf El Antari ◽  
Chemseddoha Gadhi ◽  
Hasnaâ Harrak
Keyword(s):  
Fatty Acids ◽  
Oxidative Stability ◽  
Room Temperature ◽  
Negative Impact ◽  
Storage Conditions ◽  
Prickly Pear ◽  
Economic Losses ◽  
Fatty Acids Composition ◽  
Quality Aspects ◽  
The Impact

Lipid oxidation and adulteration have a negative impact on functionality and notoriety of foods especially vegetable oils and cause economic losses. The present study investigates the control of two commercial quality aspects of prickly pear seeds oil (PPSO): oxidative stability during storage and detection of adulteration. Peroxide index, specific extinction coefficients K232 and K270, free acidity, and fatty acids composition were evaluated during different periods of incubation (6, 12, and 18 months) at various temperatures (4°C, 25°C, 40°C, and uncontrolled room temperature ranging between 4°C and 40°C) with different packaging (protected and unprotected from sunlight, with and without nitrogen gas bubbling). Based on the physicochemical and biochemical parameters evolution, this study has shown that PPSO stored at 4°C for 18 months preserves the initial quality. However, at 40°C, an intense lipid oxidative process occurred after 6 months of storage. The changes have also affected fatty acids composition, especially rates of linoleic and oleic acids. The shelf-life of oils stored at 25°C and at uncontrolled room temperature can be limited to 6 months. Regarding the impact of light and nitrogen bubbling, sunlight has affected seriously the oxidative stability of oils after 12 months of storage and the bubbling with nitrogen has improved their stability when they have been stored in clear glass bottles. The levels of adulteration detection using fatty acids as markers are relatively high. The detection of oil adulteration can be depicted by fatty acids composition up to 15% of olive and almond oils and up to 20% of rapeseed oil. The iodine value could also be an indicator of the sunflower oil presence in PPSO. Therefore, other minor compounds including sterols and tocopherols should be investigated to depict PPSO adulteration with cheaper oils and to determine lower levels of detection in order to ensure the authenticity of PPSO.

scholarly journals The Effect of Fat Content and Fatty Acids Composition on Color and Textural Properties of Butter

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4565
Author(s):  
Sergiu Pădureţ
Keyword(s):  
Fatty Acids ◽  
Principal Component ◽  
Textural Properties ◽  
Fat Content ◽  
Fatty Acids Composition ◽  
Color Parameter ◽  
Butter Fat ◽  
Composition Variation ◽  
Texture Parameters ◽  
The Impact

The textural properties of butter are influenced by its fat content and implicitly by the fatty acids composition. The impact of butter’s chemical composition variation was studied in accordance with texture and color properties. From 37 fatty acids examined, only 18 were quantified in the analyzed butter fat samples, and approximately 69.120% were saturated, 25.482% were monounsaturated, and 5.301% were polyunsaturated. The butter samples’ viscosity ranged between 0.24 and 2.12 N, while the adhesiveness ranged between 0.286 to 18.19 N·mm. The principal component analysis (PCA) separated the butter samples based on texture parameters, fatty acids concentration, and fat content, which were in contrast with water content. Of the measured color parameters, the yellowness b* color parameter is a relevant indicator that differentiated the analyzed sample into seven statistical groups; the ANOVA statistics highlighted this difference at a level of p < 0.001.

scholarly journals The Impact of Package Type and Temperature on the Changes in Quality and Fatty Acids Profile of Table Eggs during Their Storage

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2047
Author(s):  
Kamil Drabik ◽  
Tomasz Próchniak ◽  
Damian Spustek ◽  
Karolina Wengerska ◽  
Justyna Batkowska
Keyword(s):  
Fatty Acids ◽  
Room Temperature ◽  
Research Work ◽  
Storage Period ◽  
Specific Weight ◽  
Water Conductivity ◽  
Shell Weight ◽  
Fatty Acids Profile ◽  
Lower Permeability ◽  
The Impact

The aim of the study was to evaluate the possibility of reducing changes in the quality of consumer hen eggs by storing them in various package type and under various temperature conditions (room and refrigeration). The material consisted of 960 chicken eggs packed in cardboard or plastic boxes, 10 pcs in each. Half of the packages were stored at room temperature (21 °C), the rest in the refrigerator (5 °C). The eggs were stored for 28 days qualitatively evaluated at 14-day intervals. The characteristics of whole egg (weight, specific weight, proportion of morphological elements, air cell depth) as well as of shell (weight, color, crushing strength, thickness, density, water conductivity), albumen (height, Haugh units, weight, pH) and yolk (weight, color, pH) were analyzed. The fatty acids profile of yolks was also evaluated as a freshness indicator. Packaging types available on the market, apart from its marketing and eggs protection function, can also influence the quality and stability of the product during storage. The use of plastic boxes can help to maintain higher eggs quality during the storage period, even after a significant extension of the storage time. Eggs stored in plastic boxes at room temperature had very similar results to those stored under refrigeration using conventional cardboard boxes. This effect is probably related to the lower permeability of plastic boxes in comparison to cardboard ones, but detailed research work in this direction is necessary to verify this relation.

scholarly journals The Impact of Domestic and Foreign Environment on China’s EconomicDevelopment

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Mengya Cao
Keyword(s):  
Financial Crisis ◽  
Economic Crisis ◽  
World Economy ◽  
Industrial Structure ◽  
Negative Impact ◽  
Economic Losses ◽  
The World ◽  
World Economic ◽  
Short Time ◽  
The Impact

In recent years, the financial crisis has affected the economies of all countries in the world. At that time, it seriously restricted the development of the world economy. From a modern perspective, the difficult period of the world economic crisis caused by the financial crisis has passed, but the negative impact of the economic crisis can not be eliminated in a short time. Dispersed, the crisis has brought both opportunities and challenges to the country as well as heavy economic losses. Under the background of economic globalization, only by making a scientific and effective analysis of the world economic situation and keeping up with the trend of the world economy, can we effectively promote the domestic economic development and industrial structure, and enable our economy to develop healthily and substantially.

The impact of corona crisis on the economies of major metropolitan areas

2021 ◽  
pp. 145-159
Author(s):  
Т. Д. Polidi ◽  
A. Y. Gershovich
Keyword(s):  
Metropolitan Areas ◽  
Negative Impact ◽  
The United States ◽  
Economic Losses ◽  
Published Data ◽  
Russian Economy ◽  
Real Gdp ◽  
Regional Product ◽  
The Impact ◽  
Operational Assessment

The article presents the results of an operational assessment of the impact of the COVID-19 crisis on the change in the gross urban product (GUP) in 17 metropolitan areas of Russia with a population of more than 1 million people in 2020. The goal of the authors was to try to answer the most actual questions nowadays (early 2021): how deep was the fall of the largest agglomerations economies in Russia and abroad; did the corona crisis have a more negative impact on the largest metropolitan areas then on the rest of the economy? In order to answer these questions, two main tasks were: 1) to assess GUP in 17 largest metropolitan areas of Russia; 2) to consider foreign estimates of the GUP in 2020. For foreign comparisons, the authors use the first published data on changes in GDP and gross urban/regional product in the United States, Canada and Australia. The assessment of GUP in this work is carried out through the assessment of the component of employee compensation and then the transition to the GUP indicator on the assumption that such a ratio of compensation of employees to GDP in a city equals the average of the said ratios for the 17 metropolitan areas. The assessment showed that the real GDP growth rates in 2020 were negative not in all metropolitan areas, and in most of them economic losses turned out to be less than those of the Russian economy as a whole.

scholarly journals Characterization of commercial Tunisian monovarietal olive oils produced from autochthonous olive cultivars

2018 ◽  
pp. 581
Author(s):  
Souihli Slim, Nuno Rodrigues ◽  
Ana C.A. Veloso ◽  
Luis G. Dias ◽  
Rebeca Cruz, Susana Casal ◽  
Souheib Oueslati ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oxidative Stability ◽  
Monounsaturated Fatty Acids ◽  
Storage Conditions ◽  
Total Phenols ◽  
Olive Cultivar ◽  
Linear Discriminant ◽  
Discriminant Model ◽  
Olive Oils ◽  
Olive Cultivars

Tunisian commercial monovarietal olive oils, produced from two predominant autochthonous olive cultivars (cvs Chétoui and Oueslati) and another less investigated olive cultivar (cv Sahli) were studied. Chemical and sensory data have shown that most olive oils should be classified as lampante olive oil, pointing out the need of improving producing and/or storage conditions. Sahli olive oils showed the lowest total phenols content (157±48 mg/kg), oxidative stability (6.5±2.1 h), DPPH scavenging activity (68%±14) and monounsaturated fatty acids content (63.1%±3.1). These olive oils had the highest saturated and polyunsaturated fatty acids contents (19.9%±2.4 and 16.9%±1.4) as well as total tocopherols levels (222±49 mg/kg). Finally, the information of 12 selected parameters (total phenols, oxidative stability, nine fatty acids and γ-tocopherol), allowed establishing a linear discriminant model that correctly classified olive oils according to the olive cultivar with predictive rates of 90%±8. Heptadecenoic, behenic and eicosenoic acids were the three fatty acids identified as the most relevant chemical markers of Sahli olive oils.

scholarly journals Identifying causes and potential consequences of financial fraud

2019 ◽  
pp. 47-56
Author(s):  
Tetiana Kizyma ◽  
Andrii Kizyma
Keyword(s):  
Social Relations ◽  
Negative Impact ◽  
Research Literature ◽  
Effective Control ◽  
Economic Losses ◽  
Financial Fraud ◽  
Fraud Triangle ◽  
The Individual ◽  
Global Threat ◽  
The Impact

Introduction. The article claims that due to the rapid growth of financial relations, advancement of globalization processes, the impact of IT and the Internet on financial performance, the number of economic crimes in Ukraine has increased recently, especially financial fraud offences. The authors provide evidence that fraudulent schemes have targeted not only public and private finance, but all social relations. Purpose. Therefore, the aim of the paper is to address financial fraud as a global threat and identify its causes and potential consequences. Methods. For addressing the causes and effects of financial fraud, the following general research methods are used: analysis, synthesis, induction, deduction, abstraction and grouping. Results. It should be noted that the problem of financial fraud has not received sufficient attention in domestic research literature and practice. The paper presents the leading causes of financial fraud, which include economic, moral and psychological causes as well as regulatory, infrastructural and organizational ones. Financial fraud has a negative impact on the national economy and the welfare of citizens, and therefore leads to the multimillion losses. In order to identify consequences of financial fraud, a combination two types of evaluating such consequences is suggested: quantitative (involves the calculation of pecuniary damage, economic losses and lost economic profit due to fraud offences, and qualitative (logically explains circumstances of financial fraud, risks of losing corporate reputation, image and investment attractiveness). There are three major reasons why financial fraud occurs, which constitute the so-called fraud triangle: the opportunity to commit fraud; the pressure on the individual or the motivation behind the crime; the ability to rationalize the fraud. Therefore, the most important tasks for state bodies, economic entities and individuals include neutralizing the factors which lead to financial fraud and exercising effective control over the prevention of fraud offences in social and economic areas in general, and in financial area in particular. Discussion. Further studies should focus on a comprehensive analysis of the most common types of financial fraud, which take place in Ukraine. The authors argue that this will lead to establishing a set of policies aimed at reducing this negative phenomenon.

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