scholarly journals Performance of Olive-Pomace Oils in Discontinuous and Continuous Frying. Comparative Behavior with Sunflower Oils and High-Oleic Sunflower Oils

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3081
Author(s):  
Francisca Holgado ◽  
María Victoria Ruiz-Méndez ◽  
Joaquín Velasco ◽  
Gloria Márquez-Ruiz
Keyword(s):  
Polar Compounds ◽  
Test Results ◽  
Olive Pomace ◽  
High Oleic ◽  
Sunflower Oils ◽  
Frying Performance ◽  
Minor Compounds ◽  
Fried Potatoes ◽  
First Time ◽  
Positive Effect

Frying performance of olive-pomace oils (OPOs) as compared to sunflower oils (SOs) and high-oleic sunflower oils (HOSOs) was studied in discontinuous frying (DF) and continuous frying (CF) for the first time. DF is used in household, restaurants and frying outlets, while CF is used in the food industry. Oil alteration during frying was determined by measurements of polar compounds (PC) and polymers. Fried potatoes were analyzed for oil absorption and alteration, color, and evaluated in an acceptability test. Results for DF showed that all SOs reached 25% PC at the 9th frying operation (FO), whereas HOSOs did between the 17–18th FO and variable results were found for OPOs since initial levels of diacylglycerols were different. Rates of formation of PC or polymers were the lowest for OPOs, thus showing the best performance in DF. Specifically for PC, relative rates of formation were 1.00–1.11, 2.46–2.71 and 1.37–1.41 for OPOs, SOs and HOSOs respectively. In CF, OPOs and HOSOs behaved similarly and better than SOs, although none reached 25% PC after 40 FO. The good performance of OPOs can be attributed to the high monounsaturated-to-polyunsaturated ratio, in common with HOSOs, and the additional positive effect of minor compounds, especially β-sitosterol and squalene.

scholarly journals Characterization of different ozonized sunflower oils II. Triacylglycerol condensation and physical properties

2019 ◽  
Vol 70 (4) ◽  
pp. 330
Author(s):  
O. E. Ledea-Lozano ◽  
L. A. Fernández-García ◽  
D. Gil-Ibarra ◽  
M. Á. Bootello ◽  
R. Garcés ◽  
...  
Keyword(s):  
Physical Properties ◽  
Vegetable Oils ◽  
Unsaturated Fatty Acids ◽  
Chemical Species ◽  
Polar Compounds ◽  
Chemical Transformations ◽  
Scanning Calorimetry ◽  
High Oleic ◽  
Sunflower Oils

Within the chemical transformations that vegetable oils undergo, oxidative reactions are one of the most widely studied. During the process of oxidation oils react with oxygen in their different forms to produce a large variety of chemical species that alter their chemical and physical properties. This work is the second of a series of two in which the action of ozone on different sunflower oils was investigated. Ozone reacts with double bonds of unsaturated fatty acids which produce different peroxidated species. The presence of altered triacylglycerol (TAG) increases the polarity of the vegetable oils and induces changes in their physical properties. Moreover, peroxygenation alters the aggregation of TAGs, favoring the formation of dimers or oligomers that can substantially change the melting and crystallization profiles of these oils. In the present work the effect of ozonation on four different sunflower oils was studied: common sunflower, high oleic sunflower and two highly saturated sunflower oils, high palmitic and stearic in a high oleic background. Furthermore, the species of TAGs from the different oils that were affected by the ozone oxidative attack were studied. The formation of polar compounds and TAG aggregates were investigated as well as the effect caused by them on the physical properties of the oils as studied through differential scanning calorimetry.

scholarly journals Phytochemical Analysis of Methanolic Extract of Jordanian Melissa officinalis L.

2018 ◽  
Vol 10 (4) ◽  
pp. 58 ◽  
Author(s):  
Hammad K. Aldal in
Keyword(s):  
Methanolic Extract ◽  
Polar Compounds ◽  
Natural Compounds ◽  
Phytochemical Analysis ◽  
Spring Semester ◽  
Plant Parts ◽  
Interesting Part ◽  
Phytochemical Compounds ◽  
Minor Compounds ◽  
First Time

The methanolic extract obtained from leaves, steam and seeds of M. officinalis growing in Karak city-Jordan, was investigated, discussed for its phytoconstituents for the first time and analyzed by GC-MS instrument with BSTFA and Heptan solvents. Plant parts were collected during the spring semester 2018. Results showed that leaves extract have twenty one major and minor natural compounds available in all parts. Six of them which were above 1 % have been found in the extract of leaves more than other parts of the plant. Leaves extract are a good source of various phytoconstituents. These natural compounds gave leaves an important role to use it as anticancer and sedative due to the presence of Palmitic acid and polar compounds. Leaves are much interesting part due to the availability of these bioactive compounds as major and minor compounds more than other parts. Thus, the isolation of leaves phytochemical compounds will give fruitful results for further detailed study. 

scholarly journals COT-13 Current situation and problems of cancer genomic profiling test in Kyoto University Hospital

2020 ◽  
Vol 2 (Supplement_3) ◽  
pp. ii22-ii22
Author(s):  
Yoshiki Arakawa ◽  
Junko Suga ◽  
Yukinori Terada ◽  
Kohei Nakajima ◽  
Masahiro Tanji ◽  
...  
Keyword(s):  
Treatment Options ◽  
Insurance Coverage ◽  
Germline Mutations ◽  
University Hospital ◽  
Genomic Profiling ◽  
Test Results ◽  
Final Test ◽  
First Time ◽  
To Receive ◽  
Secondary Finding

Abstract Objective: Kyoto University Hospital has introduced the cancer genomic profiling tests, Oncoprime in 2015, Guardant360 in 2018, which are not under insurance coverage, FoundationOne CDx(F1CDx) and OncoGuide NCC Oncopanel system(NCC OP) in 2019, which received approval for insurance coverage for the first time in Japan. We investigated the results of cancer genomic profiling test under insurance coverage in our hospital. Methods: A special facility for the cancer genomic profiling tests was produced. To perform the cancer genomic profiling test, an outpatient must visit the facility three times (learning, ordering of the test, and getting the results). The expert panels decide the final test results and treatment options with the all information of the patients. Results: From November 2019 to March 2020, 51 and 9 patients were tested with F1CDx and NCC OP, respectively. 16 patients (31%) of F1CDX and 2 patients (22%) of NCC OP got treatment recommendations from the expert panels. However, only 5 patients (9.8%) of F1CDX and 1 patient (11%) of NCC OP received the treatments. The secondary finding suspecting germline mutations was found in 8 patients of F1CDX. Conclusion: After the approval the cancer genomic profiling tests with insurance coverage in Japan, it becomes easy for the patients to perform the test and get the genetic information of the tumor. However, it remains not easy to receive the recommended drugs because of several limitations of their usages.

scholarly journals Deciphering the effects of kosmotrope and chaotrope salts during aqueous two phase extraction (ATPE) of polyphenolic compounds and glycoalkaloids from the leaves of a nutraceutical plant, Solanum retroflexum, with the aid of UPLC-QTOF-MS

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Tebogo Mokgehle ◽  
Ntakadzeni Madala ◽  
Wilson Gitari ◽  
Nikita Tavengwa
Keyword(s):  
Polar Compounds ◽  
Ultra Performance Liquid Chromatography ◽  
Polyphenolic Compounds ◽  
Phase Extraction ◽  
Two Phase ◽  
Solanum Retroflexum ◽  
Chaotropic Salts ◽  
Almost All ◽  
First Time ◽  
Aqueous Two Phase Extraction

AbstractSolanum plants (Solanaceae) are renowned source of nutraceuticals and have widely been explored for their phytochemical constituents. This work investigated the effects of kosmotropic and chaotropic salts on the number of phytochemicals extracted from the leaves of a nutraceutical plant, Solanum retroflexum, and analyzed on the ultra-performance liquid chromatography hyphenated to a quadrupole time of flight mass spectrometer (UPLC-QTOF-MS) detector. Here, a total of 20 different compounds were putatively characterized. The majority of the identified compounds were polyphenols and glycoalkaloids. Another compound, caffeoyl malate was identified for the first time in this plant. Glycoalkaloids such as solanelagnin, solamargine, solasonine, β-solanine (I) and β-solanine (II) were found to be extracted by almost all the salts used herein. Kosmotrope salts, overall, were more efficient in extracting polar compounds with 4 more polyphenolic compounds extracted compared to the chaotropes. Chaotropes were generally more selective for the extraction of less polar compounds (glycoalkaloids) with 3 more extracted than the kosmotropes. The chaotrope and the kosmotrope that extracted the most metabolites were NaCl and Na2SO4, respectively, with 12 metabolites extracted for each salt. This work demonstrated that a comprehensive metabolome of S. retroflexum, more than what was previously reported on the same plant, can be achieved by application of kosmotropes and chaotropes as extractants with the aid of the Aqueous Two Phase Extraction approach. The best-performing salts, Na2SO4 or NaCl, could potentially be applied on a commercial scale, to meet the ever-growing demand of the studied metabolites. The Aqueous Two Phase Extraction technique was found to be efficient in simultaneous extraction of multiple metabolites which can be applied in metabolomics.

Improving the Strength of Abrasive Wheels and Optimizing the Control over the Strength of Composite Abrasive Materials

2019 ◽  
Vol 946 ◽  
pp. 380-385
Author(s):  
Boris A. Chaplygin ◽  
Viacheslav V. Shirokov ◽  
Tat'yana A. Lisovskaya ◽  
Roman A. Lisovskiy
Keyword(s):  
Mechanical Properties ◽  
Test Results ◽  
Key Factors ◽  
Special Equipment ◽  
Material Density ◽  
Factors Affecting ◽  
Control Factors ◽  
Reinforcing Material ◽  
Special Studies ◽  
First Time

The strength of abrasive wheels is one of the key factors affecting the performance of abrasive machining. The paper discusses ways to improve the strength of abrasive wheels. The stress-state mathematical model presented herein is a generalization of the existing models. It is used herein to find for the first time that there are numerous optimal combinations of the elastic modulus and reinforcing material density, which result in the same minimum value of the objective function. It is found out that increasing the radius of the reinforcing component while also optimizing the mechanical properties of its material may increase the permissible breaking speed of the wheel several times. We herein present a regression equation and a nomogram for finding the optimal combination of control factors. Conventional methods for testing the mechanical properties of materials, which have been proven reliable for testing metals and alloys, are not as reliable for testing abrasive materials, as the test results they generate are not sufficiently stable or accurate. We therefore propose an alternative method that does not require any special equipment or special studies.

scholarly journals Wheat Bread with Grape Seeds Micropowder: Impact on Dough Rheology and Bread Properties

2020 ◽  
Vol 30 (1) ◽  
pp. 138-150
Author(s):  
Veronika Valková ◽  
Hana Ďúranová ◽  
Jana Štefániková ◽  
Michal Miškeje ◽  
Marián Tokár ◽  
...  
Keyword(s):  
Wheat Flour ◽  
Dough Rheology ◽  
Wheat Bread ◽  
Grape Seeds ◽  
Rheological Analysis ◽  
First Time ◽  
Positive Effect ◽  
Bread Properties ◽  
Electronic Eye ◽  
Different Levels

AbstractThe current study was designed to enhance the functionality of white bread by replacement of wheat flour with different levels (1%, 2%, 5%, and 8%) of grape seeds micropowder (GSMP) with nanosized particles (10 µm). Chemical composition of GSMP, volume and sensory attributes, evaluated with the panel of evaluators and an electronic nose (e-nose) and an electronic eye (e-eye) were investigated in the tested breads. It has been found out that GSMP contained appreciable amounts of flavonoids including catechin, epicatechin, gallic acid and minerals especially, Ca, K and Mg. The data from rheological analysis showed that the addition of GSMP (mainly at 5% and 8% levels) to the wheat flour had a positive effect on dough manifesting with rheology by increased dough stability. The volume of the experimental breads (above 1% concentration) was demonstrably declined (P < 0.0001) in comparison with the control bread. Sensory rating revealed that the bread fortified with 1% GSMP was judged by the consumer panelists as the most acceptable with the highest scores for all quality attributes which was also confirmed by the data of e-nose and e-eye. Our results suggest for the first time that 1% GSMP addition appears to be a promising functional ingredient to improve bread with required qualitative and sensory properties.

Ambient vibration test results of the Imperial County Services Building

1983 ◽  
Vol 73 (6A) ◽  
pp. 1895-1902
Author(s):  
Gerard C. Pardoen
Keyword(s):  
Strong Motion ◽  
Ambient Vibration ◽  
Vibration Test ◽  
Test Results ◽  
Structural Failure ◽  
Imperial Valley ◽  
Ambient Vibration Test ◽  
Significant Interest ◽  
First Time ◽  
County Services

Abstract The ambient vibration test results conducted on the Imperial County Services Building prior to the 15 October 1979 Imperial Valley earthquake are summarized. These results are of significant interest because the Imperial County Services Building has been the source of many postearthquake investigations due to the fact that the 1979 earthquake represented the first time a building instrumented with strong motion recorders suffered and recorded the major structural failure.

Answering the Questions of the Psychologist Assessing the Visually Handicapped Child

1975 ◽  
Vol 69 (8) ◽  
pp. 350-353
Author(s):  
John L. Morse
Keyword(s):  
Classroom Observation ◽  
Handicapped Child ◽  
Test Results ◽  
Visual Condition ◽  
Inappropriate Behaviors ◽  
Test Conditions ◽  
Visually Handicapped ◽  
First Time

The most common question asked by the psychologist who is faced for the first time with assessing a visually handicapped child are answered. The 15 questions include such areas as the required information concerning visual condition, background of the client, test conditions, the role of the parents, classroom observation, behaviors observed during testing, evaluation of test results, expectations of parents and teachers, and modification of a child's inappropriate behaviors.

scholarly journals The Susceptibility of Meningococci to the Antimicrobial Agents in Moscow 2006 - 2015

2016 ◽  
Vol 15 (3) ◽  
pp. 7-14 ◽  
Author(s):  
M. A. Koroleva ◽  
I. S. Koroleva ◽  
I. M. Zakroeva ◽  
I. M. Gruber
Keyword(s):  
Cerebrospinal Fluid ◽  
Continuous Monitoring ◽  
Antimicrobial Agents ◽  
Meningococcal Infection ◽  
Test Results ◽  
Prognostic Criteria ◽  
Comparison Results ◽  
Moderately Resistant ◽  
First Time

Relevance. One of the prognostic criteria meningococcal infection (MI) epidemic status process is the increasing number of resistant to antibiotics meningococcal strains. Aim of this study was to investigate the dynamics of invasive strains of N. meningitidis susceptibility to antibiotics in Moscow in 2006 - 2015. Materials and methods. Studied 98 strains of N. meningitidis, isolated from blood and cerebrospinal fluid of patients with MI. The study changes of sensitivity N. meningitidis to antibiotics was occured in two periods: first -2006 - 2011 and second - 2012 - 2015. The MIC was determined by E-test. Results. In the present study revealed for the first time the Russian strains of N. meningitidis, moderately resistant to penicillin (5 strains) and resistant to rifampicin (3 strains). Among the studied strains were not found resistant to ceftriaxone, ciprofloxacin, tetracycline and chloramphenicol. Discussion. Comparison results two study periods allowed to reveal the dynamics of increasing the sensitivity of N. meningitidis to antibiotics, which confirms the decline in meningococcal virulence, and as a result, continued interepidemic MI period. Conclusions. Despite the decline antibakterial resistance is required continuous monitoring.

scholarly journals Antioxidant Effects of Green Tea Leaf Extract on Chemical properties of Corn Refined Oil of Microwave Fried Potatoes

2019 ◽  
Vol 4 (3) ◽  
pp. 96-101
Author(s):  
Masomeh Hoseini ◽  
Maryam Fahim Danesh
Keyword(s):  
Green Tea ◽  
Leaf Extract ◽  
Polar Compounds ◽  
Butylated Hydroxytoluene ◽  
Heating Process ◽  
Ionic Bond ◽  
Refined Oil ◽  
Peroxide Content ◽  
Tea Leaf ◽  
Fried Potatoes

Introduction: Oxygen, light, heat, metal ions, and enzymes are among the agents that oxidize oils, fats, and high-fat food products which result in oxidative spoilage. Due to the toxicity and cancer risk of oxidative agents, the use of synthetic antioxidants is important for delaying the oxidation processes. The purpose of this study was to evaluate the protective effect of natural antioxidants including green tea leaf extract and butylated hydroxytoluene (BHT) on the oxidation of the corn refined oil of microwave-heated fried potatoes. Methods: To this end, corn refined oil and corn oil were treated with green tea leaf extracts (i.e., 200, 400, 600, and 800 ppm), followed by treating the oils with a combination of green tea leaf extract (600 ppm) and BHT (200 ppm). The samples with no anti-oxidant treatments were used as the controls. Eventually, several parameters related to the corn oils were determined, including peroxide content, acidity, polar compounds, and ionic bond conjugates. Results: Based on the results, significant increases were observed in peroxide, acidity, polar compounds, and ionic bond conjugates in the corn refined oil of microwave fried potatoes (P<0.05). On the other hand, the results showed that the heating process reduced peroxide content (P<0.05). However, acidity increased significantly during the heating process (P>0.05) and the lowest acid value was observed in the mixture of 600 ppm of the green tea leaf with 200 ppm of the BHT. There was no significant difference between the control group and the samples treated with 200 ppm of the green leaf extract (P<0.05) in terms of polar components. In addition, a significant decrease was found in the conjugated dienes by increasing the green tea leaf extract concentration (P<0.05). Finally, the highest protection was achieved in the oils that were treated with a combination of green tea leaf extract and BHT. Conclusion: In general, the green tea leaf extract and BHT have antioxidant activities that make them suitable agents for use in food protection industries.

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