Effect of natural antioxidants on the lipase activity in the course of batch and continuous glycerolysis of babassu oil

Abstract

The effects of several natural antioxidants (copaiba oil, buriti oil, cocoa butter, tucuman butter, oregano and white thyme) were assessed in the enzymatic synthesis of monoglycerides (MAG) from the glycerolysis of babassu oil. The reactions were catalyzed by Burkholderia cepacia lipase immobilized on SiO2-PVA and the assays carried out in batch and continuous runs. Results were compared with those attained in the control reactions (without any strategy to avoid oxidation), and the best approach was tested in a continuous packed-bed reactor. The best performance was obtained using N2 in the reaction medium (60 % of MAG) followed by buriti oil (57.6 % of MAG) and cocoa butter (56.6 % of MAG), preventing the oxidation of babassu oil in batch reaction. However, the incorporation of buriti oil in the medium influenced the MAG profile, leading to the largest formation of monoolein, unlike other runs. Similar results were obtained in continuous reactions, using inert atmosphere and cocoa butter (24-25 % of MAG). Thereby, among the tested antioxidant agents, cocoa butter was the most effective in both systems, because it did not interfere in the MAG profile and also reduced the cost of the process.

Effect of Free and Nanoencapsulated Copaiba Oil on Monocrotaline-induced Pulmonary Arterial Hypertension

“…However, free copaiba oil and nanocapsules also improved RV antioxidant parameters. Previous studies have shown that copaiba oil possesses antioxidant properties 43 and exerts a protective effect against liver injury. 3,44 However, there have not been any studies documenting the activity of copaiba oil in cardiovascular diseases.…”

Enzyme Biocatalysis for Sustainability Applications in Reactors: A Systematic Review

“…The formation of the MAG product remained stable even after 192 h of continuous operation (6 h for each reaction), 32 consecutive cycles. 62 Production of DAG using immobilized SMG1-F278N was conducted in a packed bed reactor on a pilot-plant scale. The selection of the noncommercial enzyme was due to its excellent esterification yield and reusability in deacidification of high-acid oils and fats reported in previous studies.…”

“…The operational stability of the enzyme was tested to determine the long-term use of the enzyme. The formation of the MAG product remained stable even after 192 h of continuous operation (6 h for each reaction), 32 consecutive cycles …”

Nanoemulsion Improves Babassu Palm Oil (Orbignya phalerata) Antioxidant Properties

“…In Brazil, the plant is mainly present in northeastern and mid-western regions, where it has been exploited sustainably for decades [1][2][3][4][5][6]. The oil extract from its fruit is one of the most important products from the tree due to several biological activities [7][8][9][10], such as antioxidant properties [11][12]. Due to these properties, babassu oil is marketed as an important ingredient for different industries, especially for pharmaceutical and food companies in the north and northeast regions of Brazil [13][14][15].…”