Valorization of soybean oil residue through advanced technology of graphene oxide modified membranes for tocopherol recovery

A study was conducted to investigate the influence of rain on retention of soybean oil emulsions and their influence on wax morphology and gas exchange of apple and peach leaves. Peach and apple trees were grown in 19-liter pots in a greenhouse (25 °C). Two different soybean oil emulsions were sprayed on trees in a randomized block design with five replications. Twenty-four hours after the oil sprays, the trees were subjected to three rainfall regimes, 0.25, 1.25, and 2.54 cm. The surface wax and the oil residue on leaves were determined gravimetrically after chloroform extraction. A negative relationship existed between rainfall and oil retention. Peach leaves receiving 0.25, 1.25, and 2.54 cm rainfall lost 19%, 62%, and 82% of the applied oil, respectively. There were no differences in oil retention between top, middle, and bottom layers of the canopy, indicating that leaf age did not influence oil retention. Oil residue loss from apple leaves was similar to that from peach. Scanning electron microscopy revealed that the leaf wax morphology was not affected by the soybean oil emulsions and occurred as striations on both leaf surfaces. However, one of the emulsions partially washed off the waxes from apple leaf surfaces whereas the other emulsion did not exhibit this phenomenon. Furthermore, both of the soybean oil emulsions induced partial or full stomatal closure, which influenced stomatal conductance and transpiration.

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Sweet Potato Variability in Boiled Slices and Fried Chips

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v68i3.7281 ◽

1969 ◽

Vol 68 (3) ◽

pp. 223-233

Author(s):

F. W. Martin ◽

M. Rhodes

Keyword(s):

Soybean Oil ◽

Sweet Potato ◽

Quality Characteristics ◽

Sweet Potatoes ◽

Breeding Lines ◽

Chip Quality ◽

Oil Residue

Roots of thirty cultivars, breeding lines, and of 310 unselected seedlings of sweet potato were evaluated as boiled slices. Then slices of seventy five selections of these were deep fried in soybean oil and evaluated as chips. On the basis of color, sweetness, and mouthfeel, seedlings were classified into 25 of 27 theoretical classes. Low sweetness was associated with dry mouthfeel. The frequency of defects in the boiled slice was determined. Two types of chips were distinguished, a sweet cookie-type chip, and a nonsweet chip. Quality characteristics were more or less independent of each other and of other characteristics measured. Ratings of chips were closely correlated to judgment of flavor, and to a lesser extent, crispness, lack of oil residue, and attractiveness. High ratings were not associated with degree of sweetness. Sweet potatoes are suitable for cookie-type as well as conventional chips. However, their properties before frying are not reliable guides to quality when fried.

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TiO2-SiO2 nanoparticle-stabilised soybean oil-in-water emulsions: dispersion stability, rolling lubrication performance and surface self-cleaning effects

Journal of Tribology ◽

10.1115/1.4053356 ◽

2021 ◽

pp. 1-27

Author(s):

Reza Taheri ◽

P. Buyung Kosasih ◽

Hongtao Zhu

Keyword(s):

Cold Rolling ◽

Soybean Oil ◽

Oil Droplets ◽

Sio2 Nanoparticle ◽

Dispersed Oil ◽

Oil In Water ◽

Lubrication Performance ◽

Oil Residue ◽

Self Cleaning ◽

Oil Emulsions

Abstract Vegetable oil-in-water (VO/W) emulsions are common cold rolling lubricants. However, maintaining the required dispersion for polar oil droplets for consistent lubrication and proper surface self-cleaning after rolling remains a practical challenge. In this study, titanium silicate TiO2-SiO2 nanoparticle (NP) stabilised soybean oil emulsions are produced and NPs function as dispersant, lubrication enhancer, and detergent agent to clean up oil residue are explored. Cold rolling of SS316 reveals a threshold of NPs wt %, at which stably dispersed oil droplets improve tribology and lower the rolling parameters relative to that without or at high wt % of NPs. Cleaner as-rolled strips are also obtained with NPs. Favourable results are attributed to formation of NP-coating layers on oil droplets which enhances dispersion, optimises plate-out while keeping adequate wetting, and provides a 3-body abrasive rolling as opposed to 2-body adhesion without NPs. A model of sliding-rolling lubrication in cold rolling is also discussed.

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Net CO2 Assimilation of Apple following Application of Soybean Oil

HortScience ◽

10.21273/hortsci.32.3.531c ◽

1997 ◽

Vol 32 (3) ◽

pp. 531C-531

Author(s):

R.E. Moran ◽

D.E. Deyton ◽

C.E. Sams ◽

J. Cummins ◽

C.D. Pless

Keyword(s):

Soybean Oil ◽

Fruit Trees ◽

Co2 Assimilation ◽

Net Co2 Assimilation ◽

Oil In Water ◽

Separate Treatment ◽

Oil Residue ◽

Oil Concentration ◽

Petroleum Oil

Soybean oil can be used as an alternative pesticide for fruit trees. Two separate studies were conducted to determine the effects of oil concentration on leaf phytotoxicity and net CO2 assimilation (ACO2). In one study, concentrations of 0%, 2%, 4%, and 6% soybean oil in water were applied to individual shoots with a hand-held mist bottle. In the second study, 0%, 1.0%, and 1.5% were applied to whole trees with an airblast sprayer. Petroleum oil was applied as a separate treatment. Net CO2 assimilation was measured on single leaves. Oil residue was removed from the leaf with chloroform, dried, and weighed. Chlorosis and defoliation occurred with applications of 4% and 6% soybean oil. No visible phytotoxicity occurred with 2% or less oil. Net CO2 assimilation decreased as the rate of soybean oil increased from 0% to 4% oil, but there was no difference between 4% and 6%. Net CO2 assimilation decreased with increasing oil concentration from 0% to 1.5% and recovered to the rate of the control on day 7. Net CO2 assimilation was negatively related to oil residue. At an equivalent oil residue, there was no difference in ACO2 between petroleum and soybean oil. Below a residue of 0.15 mg·cm–2, foliar phytoxicity did not occur. Reductions in ACO2 were small and did not last longer than 7 days if residues were ≤0.10 mg·cm–2.

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Management of Powdery Mildew on Flowering Dogwood with Soybean Oil

Journal of Environmental Horticulture ◽

10.24266/0738-2898-29.4.185 ◽

2011 ◽

Vol 29 (4) ◽

pp. 185-192

Author(s):

Dennis E. Deyton ◽

Carl E. Sams ◽

Adrianna L. Cannon ◽

John C. Cummins ◽

Mark T. Windham

Keyword(s):

Growth Rate ◽

Powdery Mildew ◽

Soybean Oil ◽

Net Photosynthetic Rate ◽

Soy Oil ◽

Food Grade ◽

Flowering Dogwood ◽

Greenhouse Trial ◽

Field Nursery ◽

Oil Residue

Abstract Soybean oil formulations developed in our laboratory were evaluated for control of powdery mildew on flowering dogwood Cornus florida. In a preliminary trial in a field nursery, two formulations, TNsoy1 and TNsoy2 [0, 1 or 2% (v/v)], were applied to field-grown flowering dogwood at 2 wk intervals from June 10 until August 19. Soy oil-treated trees had less powdery mildew, higher net photosynthetic rate and growth rate than unsprayed trees, without apparent phytotoxicity. Leaves sprayed with Banner MAXX had less powdery mildew and higher photosynthetic rates than oil treated leaves. These same treatments applied the next year under more frequent rain showers did not provide satisfactory control. Newer soybean oil formulations using natural or food grade emulsifiers, were compared to three commercial botanical oil formulations and to SunSpray Ultra Fine Oil in greenhouse trials. All oil formulations provided some protective and eradicative control of powdery mildew. Photosynthesis of oil treated leaves was usually depressed, compared to controls, for several days but recovered. In greenhouse trials where the oil was not washed off by rain or irrigation, the oil residue was visible on leaves, reduced powdery mildew severity, and depressed photosynthesis for several weeks. In a second greenhouse trial, soybean oil formulations provided greater control if applied after rather than before initial inoculation.

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Investigation of the Influence of Reduced Graphene Oxide Flakes in the Dielectric on Surface Characteristics and Material Removal Rate in EDM

Materials ◽

10.3390/ma12060943 ◽

2019 ◽

Vol 12 (6) ◽

pp. 943 ◽

Cited By ~ 7

Author(s):

Rafał Świercz ◽

Dorota Oniszczuk-Świercz

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Material Removal Rate ◽

Electrical Discharge ◽

Material Removal ◽

Removal Rate ◽

Surface Characteristics ◽

Recast Layer ◽

Advanced Technology ◽

Reduced Graphene

Electrical discharge machining (EDM) is an advanced technology used to manufacture difficult-to-cut conductive materials. However, the surface layer properties after EDM require additional finishing operations in many cases. Therefore, new methods implemented in EDM are being developed to improve surface characteristics and the material removal rate. This paper presents new research about improving the surface integrity of 55NiCrMoV7 tool steel by using reduced graphene oxide (RGO) flakes in the dielectric. The main goal of the research was to investigate the influence of RGO flakes in the dielectric on electrical discharge propagation and heat dissipation in the gap. The investigation of the influence of discharge current I and pulse time ton during EDM with RGO flakes in the dielectric was carried out using response surface methodology. Furthermore, the surface texture properties and metallographic structure after EDM with RGO in the dielectric and conventional EDM were investigated and described. The obtained results indicate that using RGO flakes in the dielectric leads to a decreased surface roughness and recast layer thickness with an increased material removal rate (MRR). The presence of RGO flakes in the dielectric reduced the breakdown voltage and allowed several discharges to occur during one pulse. The dispersion of the discharge caused a decrease in the energy delivered to the workpiece. In terms of the finishing EDM parameters, there was a 460% reduction in roughness Ra with a uniform distribution of the recast layer on the surface, and a slight increase in MRR (12%) was obtained.

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Enhancing Clinical Supervision Using High-Definition Real-Time Digital Recording, Annotation, and Bluetooth Technology

Perspectives of the ASHA Special Interest Groups ◽

10.1044/2019_pers-sig11-2018-0020 ◽

2019 ◽

Vol 4 (2) ◽

pp. 356-362

Author(s):

Jennifer W. Means ◽

Casey McCaffrey

Keyword(s):

Graduate Students ◽

Data Collection ◽

Real Time ◽

Clinical Supervision ◽

Video Recording ◽

Advanced Technology ◽

High Definition ◽

Recording Technology ◽

Self Confidence ◽

Additional Data Collection

Purpose The use of real-time recording technology for clinical instruction allows student clinicians to more easily collect data, self-reflect, and move toward independence as supervisors continue to provide continuation of supportive methods. This article discusses how the use of high-definition real-time recording, Bluetooth technology, and embedded annotation may enhance the supervisory process. It also reports results of graduate students' perception of the benefits and satisfaction with the types of technology used. Method Survey data were collected from graduate students about their use and perceived benefits of advanced technology to support supervision during their 1st clinical experience. Results Survey results indicate that students found the use of their video recordings useful for self-evaluation, data collection, and therapy preparation. The students also perceived an increase in self-confidence through the use of the Bluetooth headsets as their supervisors could provide guidance and encouragement without interrupting the flow of their therapy sessions by entering the room to redirect them. Conclusions The use of video recording technology can provide opportunities for students to review: videos of prospective clients they will be treating, their treatment videos for self-assessment purposes, and for additional data collection. Bluetooth technology provides immediate communication between the clinical educator and the student. Students reported that the result of that communication can improve their self-confidence, perceived performance, and subsequent shift toward independence.

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