A Review on Extraction Techniques and Its Future Applications in Industry

Abstract

Extraction is a mandatory process for most of the industries, especially in the food processing industry to obtain the targeted compounds from various sources such as plant or seed samples. This review paper provides information about various extraction techniques that are normally used in the edible oil extraction industry. Five extraction techniques are presented in this paper. Among all the techniques presented in this paper, pressing and solvent extraction methods are considered as traditional techniques while supercritical fluid extraction, microwave assisted extraction, and ultrasound assisted extractions are considered as advanced techniques. Both advantages and disadvantages of supercritical fluid extraction, microwave assisted and ultrasound assisted extractions are discussed. Furthermore, the parameters that would affect the output of each technique are included in each section. Nowadays, research is going on to further enhance the extraction method to obtain a higher extraction yield or increase the quality of the extraction product. The enhancement can be either combining two or more extraction techniques into one complete process or modifying the available technique alone. Therefore, the theoretical knowledge provided in this review will be useful for future researchers who are interested in enhancing the extraction techniques. Practical Applications: Extraction is a mandatory process in edible oil extraction industry. Extraction industry is always looking for a process which is high efficiency and low extraction cost. Therefore, various advanced techniques or treatments are applied to optimize the oil yield and shorten the extraction time. This paper provides a review on various techniques by summarizing both advantages and disadvantages of each technique. The information can be very useful for improving the current extraction technique to further optimize the oil yield or enhance the quality of oil.

Effect of extraction methods on the efficiency of sumac (Rhus coriaria L.) fruit extract in soybean oil quality during accelerated conditions

“…These mechanisms agitate the molecules and subsequently increase their temperature. Therefore, the heat‐sensitive bioactive compounds, such as tannins and anthocyanins, may be oxidized and degraded by this method (Gaber et al., 2018; Geow et al., 2021; Hu et al., 2017). The generated vibration in ultrasound‐assisted extraction method can create bubble formation in the solvent.…”

Advancements in Tobacco (Nicotiana tabacum L.) Seed Oils for Biodiesel Production

“…Mechanical pressing, a relatively environmentally friendly extraction method, has been widely applied for the production of high-quality edible oils ( Sannino et al, 2017 ). The whole process includes sample preparation and mechanical pressing stages followed by a solvent extraction procedure to recover the oil located in the press cake ( Geow et al, 2021 ). Seed preparation involving preheating and microwaving destroy or soften the cellular structure of tobacco seeds, which significantly increases the oil yield ( Sannino et al, 2017 ).…”

Extraction of High-Value Chemicals from Plants for Technical and Medical Applications

“…However, owing to the breadth of the literature, it is impossible to offer a comprehensive guide to the advantages and disadvantages of the extraction techniques discussed herein, as these are clearly compound-specific. However, the avid reader is directed towards some interesting literature, mentioned in the specific sections below, and some excellent reviews [ 66 , 72 , 73 , 74 , 75 , 76 ].…”