scholarly journals Effect of natural extracts on the stability of sunflower oil and acrylamide formation at different thermal treatments

2018 ◽  
Vol 1 (3) ◽  
pp. 61-82
Author(s):  
E. El-Naggar
Keyword(s):  
Sunflower Oil ◽  
Thermal Treatments ◽  
Natural Extracts ◽  
Acrylamide Formation ◽  
The Stability

scholarly journals Conditioning of Praziquantel and Florfenicol for some Heterologous Coinfections of Farmed Carp

2019 ◽  
Vol 70 (7) ◽  
pp. 2404-2409
Author(s):  
Andrei Cristian Lupu ◽  
Mihaela Bombos ◽  
Cristian Alin Barbacariu ◽  
Constantin Roman ◽  
Raluca Mindru ◽  
...  
Keyword(s):  
Controlled Release ◽  
Sunflower Oil ◽  
Castor Oil ◽  
Water Diffusion ◽  
Route Of Administration ◽  
Effective Alternative ◽  
Sorbitan Monooleate ◽  
Fish Diseases ◽  
The Stability

Coinfections can alter the course and severity of different fish diseases. Suspensions of praziquantel (PZQ) and florfenicol (FFC ) based on sunflower oil can be an effective alternative for treating fish coinfections. The use of polyoxyethylene (20) sorbitan monooleate in the presence of ethoxylated castor oil in the preparation of PZQ and FFC suspensions has improved the stability of these suspensions. This PZQ and FFC preparation can be used in the treatment of parasitic/bacterial heterologous coinfections. The suspension of the PZQ and FFC preparation can be administered by water-diffusion, having a controlled release. The compounds are biodegradable and the route of administration remains safe for the environment.

scholarly journals Monitoring the stability of fortified cold-pressed sunflower oil under different storage conditions

10.5219/1348 ◽  
2020 ◽  
Vol 14 ◽  
pp. 887-892
Author(s):  
Dani Dordevic ◽  
Simona Jancikova ◽  
Alexandra Lankovova ◽  
Bohuslava Tremlova
Keyword(s):  
Product Development ◽  
Peroxide Value ◽  
Sunflower Oil ◽  
Oxidation Stability ◽  
Storage Conditions ◽  
Human Consumption ◽  
Primary Products ◽  
Oil Mixtures ◽  
The Stability ◽  
Cold Pressed

The aim of the study was to evaluate the stability of cold-pressed sunflower oil mixed with different seeds and herb. The seeds and herb were added at 1% and 5% concentrations; samples were divided into 2 groups: stored in the dark and light. The primary products of oxidation and chlorophyll content were monitored during 3 months of storage. The results showed very low oxidation stability of experimentally produced cold-pressed oil mixtures/dressings, especially during storage on the light. The samples with 5% of hemp herb addition showed the best stability since they have peroxide value under 20 mekv O2.kg-1, both in the dark and on the light. Other samples, both stored in the dark and on light, were declared as not for human consumption due to high oxidative product development. The research represents an important storability evaluation of products that can be found on the market and that can be found very attractive for consumers.

scholarly journals Effect of Prestorage Thermal Treatments, Vacuum Infused Mycostatic Treatments, and Storage Relative Humidity on the Stability of Chinese Chestnuts

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 644f-644
Author(s):  
Durward Smith ◽  
Joseph D. Norton
Keyword(s):  
Relative Humidity ◽  
Vacuum Treatment ◽  
Test Methods ◽  
Thermal Treatments ◽  
Weight Losses ◽  
Perishable Commodity ◽  
Efficient Processing ◽  
The Stability ◽  
Processing And Storage ◽  
And Storage

Chinese chestnuts (Castanea molissima Blume) are a highly perishable commodity which requires artificial storage means and is easily spoiled by fungi. This investigation was designed to develop processes and adapt equipment for more efficient processing and storage of Chinese chestnuts, establish parameters for optimum fresh storage, and to compare the yields and qualities of the chestnuts processed by the test methods. Chinese chestnuts were prepared for fresh storage by vacuum infusing mycostatic solutions and modified starch coatings inside the shells. Vacuum treatment facilitated perfect contact of these solutions with the surfaces of the kernels, and was a more rapid method than atmospheric or pressure soaking methods. Vacuum infused pretreatments limited desiccation, minimized spoilage, reduced storage weight losses, and yielded products with better color and texture than conventional storage. Thermal treatments for surface pasteurization were defined. A storage relative humidity of 87% was found to be optimal.

scholarly journals Production of biosurfactants using Egyptian soil fungi

2021 ◽  
Author(s):  
Shimaa R. Hamed ◽  
Raed S. Al-Wasify ◽  
Samar Ragab
Keyword(s):  
Sunflower Oil ◽  
Soil Fungi ◽  
Corn Oil ◽  
Enhancement Effect ◽  
Waste Frying Oil ◽  
Fungal Isolates ◽  
Local Soil ◽  
Wide Range ◽  
The Stability ◽  
Promising Source

Abstract Soil fungi have unique physiological and metabolic features, and are considered as an important source of biomolecules. The present research aims to study the ability of local soil fungal isolates for the production of biosurfactants and to study the stability of these biosurfactants under different temperatures (50, 70, 90, 110, and 121 ºC), different pH values (2, 3, 6, 10, 12, and 15), and different salinity concentrations (5, 10, 15, 20, and 25% NaCl) depending on the formation of clear zone using oil displacement area (ODA) test. The research also aims to study the enhancement effect of four vegetable oils including sunflower oil, waste frying oil, olive oil, and corn oil on the activity of the produced biosurfactants. The obtained results showed that Aspergillus flavus, Aspergillus wentii and Fusarium sp. had the maximum biosurfactants production. The stability of biosurfactants occurred at alkaline pH, wide range of temperatures, and under high salinity (15%). Sunflower oil had the maximum enhancement effect on the activity of the produced biosurfactants, while corn oil showed lower enhancement effect. Depending on the obtained results, it can be concluded that local soil fungal isolates are considered as a promising source for production of biosurfactants.

scholarly journals Effect of antioxidants on stability, nutritional values of refined sunflower oil during accelerated storage and thermal oxidation in frying

2012 ◽  
Vol 47 (2) ◽  
pp. 223-230 ◽  
Author(s):  
H Akhtar ◽  
I Tariq ◽  
S Mahmood ◽  
S Hamid ◽  
R Khanum
Keyword(s):  
Elevated Temperature ◽  
Thermal Oxidation ◽  
Sunflower Oil ◽  
Antioxidant Activities ◽  
Protective Effects ◽  
Pet Bottles ◽  
Frying Process ◽  
Accelerated Storage ◽  
Sunflower Oils ◽  
The Stability

Untreated sunflower oil (without antioxidants) was much more affected during long storage as well as by the thermal oxidation in 4 hours  frying process. The shelf life of oil was increased both during storage and in frying process at elevated temperature by the addition of synthetic  antioxidants. TBHQ (Tertiory butyl hydroquinone) BHT (Butylated hydroxyl toluene) BHA (Butylatd hydroxyl amine) and the mixture  of BHA and BHT used in the present study in 0.02, 0.02, 0.02 and 0.01+0.01 amount respectively to observe the stability of refined  sunflower when stored at 30°C for 21 weeks in transparent PET bottles. The stored oils (treated and untreated) when underwent in the  process of frying at the temperature of 180°C further deterioration of oils happened. The antioxidant activities and protective effects in stabilization  of sunflower oils during storage and in frying process measured in terms of POV (peroxide), FFA (free fatty acids), p-AnV (p- Anisidine value), Colour Index, RI (Refractive index), and fatty acid profile. Result indicated that TBHQ exhibited stronger antioxidant  activity during storage and gave maximum protection against thermal oxidation when oil subjected in the process of multiple frying for continous  four hours at elevated temperature. The results were indicated the effectiveness of antioxidants in the order like TBHQ > BHT > BHA  BHA+BHT. DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11458 Bangladesh J. Sci. Ind. Res. 47(2), 223-230, 2012

scholarly journals In Situ Local Oxidation of SnO Induced by Laser Irradiation: A Stability Study

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 976
Author(s):  
Antonio Vázquez-López ◽  
David Maestre ◽  
Julio Ramírez-Castellanos ◽  
Ana Cremades
Keyword(s):  
Raman Spectroscopy ◽  
Laser Irradiation ◽  
Stability Study ◽  
Thermal Treatments ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Local Oxidation ◽  
Potential Applicability ◽  
The Stability

In this work, semiconductor tin oxide (II) (SnO) nanoparticles and plates were synthesized at room conditions via a hydrolysis procedure. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the high crystallinity of the as-synthesized romarchite SnO nanoparticles with dimensions ranging from 5 to 16 nm. The stability of the initial SnO and the controlled oxidation to SnO2 was studied based on either thermal treatments or controlled laser irradiation using a UV and a red laser in a confocal microscope. Thermal treatments induced the oxidation from SnO to SnO2 without formation of intermediate SnOx, as confirmed by thermodiffraction measurements, while by using UV or red laser irradiation the transition from SnO to SnO2 was controlled, assisted by formation of intermediate Sn3O4, as confirmed by Raman spectroscopy. Photoluminescence and Raman spectroscopy as a function of the laser excitation source, the laser power density, and the irradiation duration were analyzed in order to gain insights in the formation of SnO2 from SnO. Finally, a tailored spatial SnO/SnO2 micropatterning was achieved by controlled laser irradiation with potential applicability in optoelectronics and sensing devices.

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