The impact of fruit softening on avocado cell microstructure changes monitored by electrical impedance and conductivity for cold‐pressed oil extraction

2019 ◽  
Vol 42 (4) ◽  
Author(s):  
Shuo Yang ◽  
Ian Hallett ◽  
Hyunah E. Oh ◽  
Allan B. Woolf ◽  
Marie Wong
Keyword(s):  
Electrical Impedance ◽  
Oil Extraction ◽  
Fruit Softening ◽  
Microstructure Changes ◽  
Cold Pressed ◽  
The Impact

scholarly journals Effects of Limonene on the PAHs mutagenicity risk in Roasted Fish Skin

2018 ◽  
Author(s):  
Yu-Wei Chen ◽  
Ping-Hsiu Huang ◽  
Yung-Hsiang Tsai ◽  
Chii-Ming Jiang ◽  
Chih-Yao Hou
Keyword(s):  
Essential Oil ◽  
Oil Extraction ◽  
Lemon Juice ◽  
Citrus Fruits ◽  
Fish Skin ◽  
Lemon Oil ◽  
Cold Pressed ◽  
Cold Pressure

Traditional edible barbecue products use with lemon juice not only make the barbecue more delicious but also reduce the risk of PAHs in the barbecue products. One of the major economics crops in Taiwan, the waste from citrus fruits was very tremendous mass. However, the peelings of citrus fruits are rich in essential oil, especially, the limonene is the major. Whether the anti-carcinogenesis activities of terpene, such as limonene, in citrus fruits essential oil extraction. This study to demonstrate the PAHs content in fish skin increased markedly after being roasted at 210℃ for 20 minutes and greater mutagenicity risk of roasted fish skin was observed by Ame's test. The reduction of mutagenicity risk of roasted fish skin, which the antimutagenic abilities of substances in descending order were limonene > cold pressure oil > lemon >grapefruit. The antimutagenicity rate and ability of the three extracts were limonene: 18–23%; cold-pressed lemon oil: 18–22%; and steam distilled lemon essential oil: 8–16%. The obvious anti- mutagenicity effects against the PAHs mutagenicity of roasted fish skins can be found in citrus fruits essential oil extraction.

scholarly journals The costs of resource-led development. An analysis of the economic impact of the oil extraction boom in Colombia

2016 ◽  
pp. 79-94
Author(s):  
Paulina Kupisz
Keyword(s):  
Economic Performance ◽  
Oil Extraction ◽  
Economic Effects ◽  
Negative Consequences ◽  
Oil Boom ◽  
New Challenges ◽  
Oil Sector ◽  
The Government ◽  
Rich Countries ◽  
The Impact

Oil-rich countries often face negative consequences of natural resources-led development on their overall economic performance. One of the reasons is that a country’s rising extraction rates frequently lead to various changes in its public policy and revenue management. Colombia has spectacularly increased its oil production by almost 500,000 barrels per day (bpd) in ten years, which was the effect principally of the implementation of strongly market-oriented petroleum policies in 2003. It is now the fourth largest crude producer in Latin America, registering nearly ten times more export sales than at the end of the 20th century. The economic effects of the oil-boom are already visible, which has created many new challenges the government must face in order to ensure sustainable development in the country, and to be able to mitigate the impact of the recently dropping world oil prices. The purpose of the article is to present the latest findings on the impact of the oil sector development on the Colombian economy in the 21st century, focusing especially on the current situation.

scholarly journals New approach for the elucidation of the phenomena involved in the operation of vegetable oil extraction presses

OCL ◽  
2022 ◽  
Vol 29 ◽  
pp. 6
Author(s):  
Patrick Carré
Keyword(s):  
Energy Efficiency ◽  
Carbon Footprint ◽  
Oil Content ◽  
State Of The Art ◽  
Oil Extraction ◽  
New Approach ◽  
Improved Performance ◽  
Vegetable Oil Extraction ◽  
The Impact ◽  
Mechanical Extraction

In a context where the search for naturalness, the need to reduce the carbon footprint and the development of a decentralized crushing sector are intensifying, mechanical extraction is a technology that is regaining major importance for the industry. The performance of this technique remains far below what is desirable, while the understanding of the main phenomena involved in screw presses remains insufficient. This article, after a brief presentation of the state of the art of this discipline, presents a new model centered on the notions of pressure generation and plasticity. According to this approach, plasticity can account for parameters such as the water and oil content of oilseeds, their temperature, and their possible dehulling. Plasticity in turn would explain both the compressibility of the cake and its ability to resist the thrust of the screws, and consequently to generate pressure or to creep or flow backward depending on the geometry of the screw and the cage. The model must also incorporate the notions of compression velocity, friction, and the complexity of the interactions between these parameters and the impact of the succession of screw segments and cone rings. It has been built on observation and experience and gives an understanding of the need to work simultaneously on the conditioning and geometry of the presses to achieve improved performance in terms of energy, efficiency, and reduction of the temperatures experienced by the proteins and oils

scholarly journals Neuroprotective Effects of Black Pepper Cold-Pressed Oil on Scopolamine-Induced Oxidative Stress and Memory Impairment in Rats

Antioxidants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1993
Author(s):  
Nada M. Mostafa ◽  
Ahmed M. Mostafa ◽  
Mohamed L. Ashour ◽  
Sameh S. Elhady
Keyword(s):  
Oxidative Stress ◽  
Black Pepper ◽  
Morris Water Maze Test ◽  
Piper Nigrum ◽  
Control Group ◽  
Neuroprotective Effects ◽  
Reference Drug ◽  
Monoterpene Hydrocarbons ◽  
Cold Pressed ◽  
The Impact

Oxidative stress is usually associated with many neurodegenerative diseases. In this study, the gas chromatography–mass spectrometry (GC–MS) analysis of cold-pressed oil (CPO) from black pepper (Piper nigrum) fruits was performed and its neuroprotective effects were evaluated for the first time. The analysis of CPO revealed the presence of the lignan sesamin (39.78%), the alkaloid piperine (33.79%), the monoterpene hydrocarbons 3-carene (9.53%) and limonene (6.23%), and the sesquiterpene β-caryophyllene (10.67%). Black pepper hydrodistilled oil (HDO) was also comparatively analyzed by GC–MS to show the impact of oil isolation by two different methodologies on their components and class of compounds identified. HDO analysis revealed 35 compounds (99.64% of the total peak areas) mainly composed of monoterpene hydrocarbons (77.28%), such as limonene (26.50%), sabinene (21.36%), and β-pinene (15.53%), and sesquiterpene hydrocarbons (20.59%) represented mainly by β-caryophyllene (19.12%). Due to the low yield obtained for HDO (0.01% v/w), only CPO was chosen for the evaluation of its neuroprotective potential. Alzheimer-type dementia was induced in rats by scopolamine intraperitoneal injection (1.5 mg/kg/day) for seven days. CPO was administered orally (100 mg/kg) for a week before scopolamine administration and then concomitantly for another week. Donepezil (1 mg/kg, orally) was used as a reference drug. CPO administration significantly improved the rat behaviors as evaluated by the Morris water maze test, evident from prolongation in time spent in the platform quadrant (262.9%, compared to scopolamine) and increasing in the crossing time by 18.18% compared to the control group. The rat behavior tested by passive avoidance, showed prolongation in the step-through latency compared to control. Moreover, CPO significantly (p < 0.05) ameliorated the activities of antioxidant enzymes such as catalase, superoxide dismutase (SOD) and reduced malondialdehyde (MDA) equivalents by 22.48%, 45.41%, and 86.61%, respectively, compared to scopolamine. Furthermore, CPO administration decreased scopolamine-induced elevated acetylcholinesterase levels in rats’ hippocampi by 51.30%. These results were supported by histopathological and in silico molecular docking studies. Black pepper oil may be a potential antioxidant and neuroprotective supplement.

A Cost-Driven, High-Level Optimization of OSV Operations in the Flemish Pass

2018 ◽  
Author(s):  
Philippe Gauthier ◽  
David Molyneux
Keyword(s):  
Programming Model ◽  
Oil Extraction ◽  
Non Linear Programming ◽  
Non Linear ◽  
High Level ◽  
Non Linear System ◽  
Offshore Oil ◽  
The Impact ◽  
Pareto Frontiers ◽  
Made In

This paper presents a cost driven, high-level optimization of Offshore Supply Vessel (OSV) operations in the Flemish Pass sector. This is an area located in the offshore waters of Newfoundland where significant oil discoveries were made in recent years, but where oil extraction will pose logistical challenges due to the increased distance from shore bases. In the first part of this paper, a simple non-linear programming model is used to minimize the monthly costs to supply a hypothetical offshore oil installation located in the Flemish Pass and to assess whether hypothetical fast supply vessels make economic sense. The second part of this paper explores the application of Pareto frontiers to the non-linear system, to evaluate the impact of schedule slack on costs, but also to look at winter operations in the Flemish Pass area.

scholarly journals The Effect of Microwave Pretreatment on Micronutrient Contents, Oxidative Stability and Flavor Quality of Peanut Oil

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 62 ◽  
Author(s):  
Hui Hu ◽  
Hongzhi Liu ◽  
Aimin Shi ◽  
Li Liu ◽  
Marie Fauconnier ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Acid Value ◽  
Oil Extraction ◽  
Extraction Yield ◽  
Peanut Oil ◽  
Flavor Quality ◽  
Untreated Sample ◽  
Codex Standard ◽  
Cold Pressed

The purpose of the present study is to investigate the changes in extraction yield, physicochemical properties, micronutrients content, oxidative stability and flavor quality of cold pressed peanut oil extracted from microwave (MW) treated seeds (0, 1, 2, 3, 4, 5 min, 700 W). The acid value and peroxide value of extracted oil from MW-treated peanuts were slightly increased but far below the limit in the Codex standard. Compared with the untreated sample, a significant (p < 0.05) increase in extraction yield (by 33.75%), free phytosterols content (by 32.83%), free tocopherols content (by 51.36%) and induction period (by 168.93%) of oil extracted from 5 min MW-treated peanut were observed. MW pretreatment formed pyrazines which contribute to improving the nutty and roasty flavor of oil. In conclusion, MW pretreatment is a feasible method to improve the oil extraction yield and obtain the cold pressed peanut oil with longer shelf life and better flavor.

Effect of Fruit Maturity on Microstructural Changes and Oil Yield during Cold‐Pressed Oil Extraction of ‘Hass’ Avocado

2020 ◽  
Vol 97 (7) ◽  
pp. 779-788
Author(s):  
Shuo Yang ◽  
Christina Fullerton ◽  
Ian Hallett ◽  
Hyunah E. Oh ◽  
Allan B. Woolf ◽  
...  
Keyword(s):  
Oil Extraction ◽  
Oil Yield ◽  
Microstructural Changes ◽  
Fruit Maturity ◽  
Hass Avocado ◽  
Cold Pressed

The Impact of Interface Characteristics on Mechanical Performance of a Hot-Forged Cu/Ti-Coated-Diamond Composite

2021 ◽  
Vol 1016 ◽  
pp. 1682-1689
Author(s):  
Lei Lei ◽  
Leandro Bolzoni ◽  
Fei Yang
Keyword(s):  
High Performance ◽  
Mechanical Performance ◽  
Hot Forging ◽  
Copper Matrix ◽  
Diamond Surface ◽  
Copper Powders ◽  
Tic Particle ◽  
Elemental Copper ◽  
Cold Pressed ◽  
The Impact

The Cu/55vol.%diamond (Ti) composites were fabricated by hot forging of the cold-pressed powder preforms, consisted of elemental copper powders and Ti-coated diamond particles, at 800 °C (800C-Cu/55Dia composite) and 1050 °C (1050C-Cu55Dia composite), respectively. Well bonded interface was achieved between the diamond and the copper matrix for the 800C-Cu/55Dia composite, and the coverage of diamond by interface was about 96%, attributed to homogeneously distributed nanospherical TiC interface formed on the diamond surface. However, obvious coarse TiC particle size and spallation of the formed interface were observed in the 1050C-Cu55Dia composite, implying that the composite had a relatively low bonding strength. The formed chemical bonding, good wettability and strong mechanical interlocking between the diamond and the copper matrix enable the 800C-Cu/55Dia composite having a high tensile strength of 145 MPa and a strain at fracture of 0.35%, which are about 260% and 170% higher than those of the 1050C-Cu55Dia composite, suggesting that the 800C-Cu/55Dia composite has the potential to have a high thermal conductivity and use as high-performance heat sink materials.

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