A new twin-screw press design for oil extraction of dehulled sunflower seeds

Для утилизации отработанных отбельных глин (ООГ) масложировой промышленности предложено получение комбинированного кормового продукта (ККП) непосредственно на масложировых предприятиях, при переработке ООГ совместно с отходами очистки семян подсолнечника (ООСП). Обоснованы рецептуры и технологии ККП на разработанной нами ранее производственной линии, включающей обогащение ООСП сепарированием, экструдирование и прессование полученного вторичного масличного сырья. На линии был смонтирован дополнительный узел, обеспечивающий равномерное распределение строго определенного количества ООГ во вторичном масличном сырье из ООСП. Исследовано влияние количества внесенных во вторичное масличное сырье ООГ на процесс отжима масла. Обосновано, что для производства ККП во вторичное масличное сырье необходимо добавлять не более 2 ООГ. Полученный ККП по показателям безопасности соответствует белковолипидному кормовому продукту Подсолнечный (ТУ 914637502067862 2014): массовая доля, , в пересчете на абсолютно сухое вещество сырого протеина составила 27,8 сырой клетчатки 30,6 общей золы 7,6. Установлено незначительное увеличение в ККП массовых долей сырого жира и золы, не растворимой в соляной кислоте 15,8 и 1,4 соответственно. Полученное масло по жирнокислотному составу и показателям качества не отличается от масла из ООСП. For the disposal of spent bleaching clays (SBC), we proposed to obtain a combined feed product from them directly at oil and fat enterprises, processing together with the sunflower seed cleaning waste. The formulation and technology for the production of the combined feed product were developed on a previously tested production line, including the enrichment of waste products for cleaning sunflower seeds by separation, extrusion and pressing of the obtained secondary oilseeds, for which a unit was added to ensure uniform distribution of strictly measured amounts of SBC in it. Conducted by studies on the effect of the amount of waste bleaching clay added to secondary oilseeds from waste products from cleaning sunflower seeds on the oil extraction process, it was substantiated that for the production of a combined feed product, no more than 2 of SBC should be added to secondary oilseeds. The resulting combined feed product in terms of safety corresponds to the Proteinlipid feed product Sunflower, produced under 914637502067862 2014 specification, while the combined feed product is slightly higher than the mass fraction of crude fat and ash insoluble in hydrochloric acid. The obtained oil on fatty acid composition and quality indicators practically does not differ from the oil from sunflower seed cleaning waste.

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Mechanical oil extraction of Nicotiana tabacum L. seeds: analysis of main extraction parameters on oil yield

Journal of Agricultural Engineering ◽

10.4081/jae.2016.539 ◽

2016 ◽

Vol 47 (3) ◽

pp. 142-147 ◽

Cited By ~ 3

Author(s):

Salvatore Faugno ◽

Luisa Del Piano ◽

Mariano Crimaldi ◽

Gennaro Ricciardiello ◽

Maura Sannino

Keyword(s):

Seed Oil ◽

Chemical Properties ◽

Temperature Sensors ◽

Oil Extraction ◽

Screw Press ◽

Edible Oil ◽

Oil Yield ◽

Extraction Temperature ◽

Tobacco Seed ◽

Nicotiana Tabacum L

The aim of this study is to find the best conditions of tobacco seed oil (TSO) press extraction, combining multiple extraction factors such as screw rotational speed, seeds preheating and extraction temperature, in order to have a higher oil yield. The extracted oil, having peculiar chemical properties, can be used for several purposes, also as edible oil. TSO was obtained using a mechanical screw press that has been assembled with a head press and with speed and temperature sensors mounted on the machine. Results show that the combination of high extraction temperature, slow rotational screw speed and seeds preheating has a significant effect on the oil yield. Extracting under such conditions, oil yield is 79.47±0.12 as % (w/w), which is 25% (w/w) more than the lowest yield among investigated condition.

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Modelling by Finite Element Method of the twin-screw of a press for obtaining grape seed oil

E3S Web of Conferences ◽

10.1051/e3sconf/201911203022 ◽

2019 ◽

Vol 112 ◽

pp. 03022

Author(s):

Carmen Vasilachi ◽

Sorin-Stefan Biriş

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Seed Oil ◽

Grape Seed ◽

Screw Press ◽

The Finite Element Method ◽

Grape Seed Oil ◽

The Press ◽

Twin Screw ◽

Element Method

This paper is about getting grape seed oil using a twin-screw press. Grape seed oil is a by-product of the wine industry due to the need to reduce the amount of waste, but at the same time it has been found that this oil is an excellent ingredient that can be used in many industries. It is assumed that the use of twin-screw is more efficient than single-screw extraction due to the larger pressures that are created inside the press chamber. This study focuses on the finite element method analysis of how the press process is carried out. Using the finite element method, we can get an overview of how the pressure acts on the sides of the twin-screw, how it influences the temperature but also other process factors. When we have all these, we can begin optimizing the twin-screw press process.

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Optimization of producing oil and meal from canola seeds using microwave − pulsed electric field pretreatment

OCL ◽

10.1051/ocl/2019050 ◽

2020 ◽

Vol 27 ◽

pp. 2

Author(s):

Nazanin Maryam Mohseni ◽

Habib Ollah Mirzaei ◽

Masoumeh Moghimi

Keyword(s):

Refractive Index ◽

Phenolic Compounds ◽

Electric Field ◽

Canola Oil ◽

Extraction Efficiency ◽

Pulsed Electric Field ◽

Oil Extraction ◽

Screw Press ◽

Gamma Tocopherol ◽

Meal Protein

In this study, optimization of the extraction of canola seeds oil was investigated using microwave-pulsed electric field seeds pretreatment (MW-PEF) with different MW times (0 to 200 s) and PEF intensities (0 to 5 kV/cm). The seeds oil was then extracted using screw press with different speeds (11 to 57 rpm). Oil extraction efficiency, refractive index, peroxide and phenolic compounds of oil and meal protein were measured. Tocopherols content of the best sample was also measured. The results showed that the peroxide and phenolic compounds increased at higher time, intensity and speed. An increase in the MW time and PEF intensity at first led to an increase in the oil extraction efficiency and meal protein but then both parameters decreased. The efficiency of oil extraction and protein decreased at higher speeds. The refractive index of all samples was 1.475. Gamma tocopherol was predominate one in canola oil and applying the pretreatment led to an increase in the number of total tocopherols. Treating at 1.28 kV/cm for 140.5 s and 28.71 rpm was chosen as the optimum condition with high desirability (0.744).

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