Characteristics of Structured Lipid Prepared by Lipase-Catalyzed Acidolysis of Roasted Sesame Oil and Caprylic Acid in a Bench-Scale Continuous Packed Bed Reactor

Abstract

Structured lipid (SL) was prepared from roasted sesame oil and caprylic acid (CA) by Rhizomucor miehei lipase-catalyzed acidolysis in a bench-scale continuous packed bed reactor. Total incorporation and acyl migration of CA in the SL were 42.5 and 3.1 mol %, respectively, and the half-life of the lipase was 19.2 days. The SL displayed different physical and chemical properties, less saturated dark brown color, lower viscosity, lower melting and crystallization temperature ranges, higher melting and crystallization enthalpies, higher smoke point, higher saponification value, and lower iodine value, in comparison to those of unmodified sesame oil. The oxidative stability of purified SL was lower than that of sesame oil. There were no differences in the contents of unsaponifiables including tocopherols and phytosterols. However, total sesame lignans content was decreased in SL due to the loss of sesamol when compared to sesame oil. Most of the 70 volatiles present in roasted sesame oil were removed from SL during short-path distillation of SL. These results indicate that the characteristics of SL are different from those of original sesame oil in several aspects except for the contents of tocopherols and phytosterols.

Potential Use of Avocado Oil on Structured Lipids MLM-Type Production Catalysed by Commercial Immobilised Lipases

“…A major benefit of many lipases is their regiospecificity to the sn-1,3 positions, where the ester group at sn -2 remains unchanged [3]. The sn-1,3 -specific lipases have been used to incorporate M fatty acids, such as caprylic (C8:0) and capric (C10:0) acids, into the TAG of several vegetable and fish oils, resulting in SL with important clinical and nutritional properties [11], [12], [13], [14], [15]. However, the industrial use of lipases has been limited by their high production costs [16], [17].…”

Production of MLM‐Type Structured Lipids Catalyzed by Immobilized Heterologous Rhizopus oryzae Lipase

“…Therefore, the changes can be made at sn-1 and sn-3 glycerol positions but not at sn-2 position, where the ester group remains unchanged [4]. The sn-1,3-specific lipases have been used to promote the incorporation of medium-chain fatty acids, such as caprylic (C8:0) and capric (C10:0) acids, into TAG molecule of several vegetable and fish oils to obtain SL with important clinical and nutritional properties [5][6][7][8][9][10][11].…”

PENGEMBANGAN TEKNOLOGI PRODUKSI MINYAK KENARI (Canarium indicum) MENJADI BAHAN BAKU INDUSTRI

“…Alur penelitian selanjutnya setelah penelitian ini adalah akan melakukan sintesis untuk menghasilkan suatu produk lipid terstruktur (Osborn and Akoh, 2002) menggunakan baku baku minyak kenari maupun beberapa turunan atau derivatnya untuk menghasilkan produk farmasi (medical) maupun produk pangan yang memiliki efek fisiologi terhadap manusia berdasarkan evidence based medicine. Beberapa hasil penelitian yang telah mensintesis lipid terstruktur berbahan baku minyak nabati antara lain dari olive oil atau minyak zaitun (Oh, et al, 2009), Borage oil (Kim, et al, 2010), minyak wijen atau Sesame oil (Kim and Akoh, 2006), dari minyak dedak beras (Rice bran oil) (Jennings and Akoh, 2009), dan dari minyak kedelai (Soybean oil) (Teichert and Akoh, 2011). Data hasil penelitian ini diharapkan menjadi starting point untuk eksploitasi biji kenari sehingga dapat meningkatkan nilai ekonomis kenari.…”