Copaifera Reticulata: Chemical Characterization and Bactericidal Activity Against Pathogens in Foods

Santos, Deiziane Gomes dos; Castro, Vinícius Silva; Conte, Carlos Adam; Pinto, Ângelo da Cunha; Uekane, Thaís Matsue; Rezende, Cláudia M.

doi:10.21577/1984-6835.20200038

Cited by 3 publications

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“…[51,52] Molecular distillation is a process under a high vacuum system (pressure <0.001 mbar), so the separation of the components occurs at a temperature lower than conventional distillation, protecting thermosensitive compounds such as natural bioactive compounds. In this pressure condition, the evaporated molecules reach the condenser easily because of the distance between the two systems (evaporator and F I G U R E 1 Copaiba oleoresin and its streams' main components (light and heavy) [2][3][4][5][6] T A B L E 1 Bioactive functions of some diterpenes compounds from copaiba oleoresin…”

Section: Introductionmentioning

confidence: 99%

Molecular distillation of copaiba oleoresin—A clean process for diterpenes enrichment

et al. 2022

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Copaiba oleoresin has sesquiterpenes and diterpenes with significant medicinal properties, including being antimicrobial, antiparasitic, and wound healing, among others. Thus, the objective of this work was to study the diterpene enrichment of the copaiba oleoresin from Copaifera officinalis via molecular distillation. Evaporator temperature (EVT) and feed flow rate (Q) were evaluated using an experimental design (2 2 with central point) considering the ratio of distillate and residue streams (DTR) as the response to optimize the residue recovery. EVT and Q were the main effects for diterpenes recovery, with the best experimental condition at 100 C (EVT) and 15 ml/min (Q) under 0.001 mbar, of which the residue stream had a diterpenes content of 99.25%. With the molecular distillation process, it was possible to add value to the copaiba streams, separating and purifying diterpenes with applicability in the biomedical and pharmaceutical industries since no solvent is used in this process (clean).

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Section: Introductionmentioning

confidence: 99%

Molecular distillation of copaiba oleoresin—A clean process for diterpenes enrichment

et al. 2022

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“…In addition to the problems associated with corrosion in industrial plants, such acids may cause secondary degradation reactions of fatty acids (oxidation and dimerization) or of glycerol (polymerization, dehydration to acrolein, oxidation, etc.) . Several studies aiming at the development of efficient catalytic systems for esterification have been reported in the literature and some reviews of this field are also available …”

Section: Introductionmentioning

confidence: 99%

“…It is known for example that alkyltin complexes, containing or not chloride or oxygen in its structure, are limited to 0.1% by weight of tin in consumer products, including in some cases the food contact grade tin catalysts . Concerning the economic viability of employment of this class of catalysts, their price varies among 0.50–0.70 US$ per kg, which is comparable to the price of p ‐toluenesulfonic acid, a conventional catalyst for esterification . Still, depending on the type of process, such catalysts can be separated by filtration or distillation from the final products…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Esterification of Oleic Acid and Glycerol in the Presence of Organotin(IV) Compounds

Silva¹,

Santos²,

Neto³

et al. 2019

Euro J Lipid Sci & Tech

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Esterification of oleic acid (OA) and glycerol (GLY) is studied in the absence and in the presence of the organotin(IV) catalysts (CAT) dibutyltin dichloride (Bu2SnCl2), butyltin trichloride (BuSnCl3), dibutyltin dilaurate (Bu2SnLau2), butyl stannoic acid (BuSnO(OH)), and di‐n‐butyl‐oxo‐stannane (Bu2SnO). The reactivity order observed at 180 °C using a OA/GLY/CAT molar ratio of 1/1/0.01 was BuSnCl3 > Bu2SnLau2 > Bu2SnCl2 > Bu2SnO > BuSnO(OH), and a kap of −0.6237 h−1 is obtained for BuSnCl3. The estimated activation energy for the conversion reaction of OA at the above molar ratio using BuSnCl3 is 60.9 kJ mol−1, whereas it is 71.3 kJ mol−1 for the reaction performed without the catalyst. Moreover, the most active catalytic systems are those that act as typical and pure Lewis acids, and the least active systems are those that follow the ligand exchange mechanism, suggesting that GLY and AO are involved in the ligand exchange process and may form less reactive catalytic species. Practical Applications: In order to expand the glycerol utilization, the aim of the present work is to systematically investigate the behavior of organotin(IV) compounds bearing different substituents on the metal center (oxo, carboxyl, chloro, and hydroxy groups) in the esterification of OA and GLY without a solvent for obtaining MAGs, DAGs and TAGs. Best results of esterification of AO + GLY are attained at 180 °C using BuSnCl3 as a catalyst, and the kap = −0.6237 h−1 for OA conversion is obtained.

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Fractionation of sesquiterpenes and diterpenic acids from copaiba (Copaifera officinalis) oleoresin using supercritical adsorption

Reátegui

Santos

Barrales

et al. 2022

The Journal of Supercritical Fluids

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Copaifera Reticulata: Chemical Characterization and Bactericidal Activity Against Pathogens in Foods

Cited by 3 publications

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Molecular distillation of copaiba oleoresin—A clean process for diterpenes enrichment

Molecular distillation of copaiba oleoresin—A clean process for diterpenes enrichment

Evaluation of Esterification of Oleic Acid and Glycerol in the Presence of Organotin(IV) Compounds

Fractionation of sesquiterpenes and diterpenic acids from copaiba (Copaifera officinalis) oleoresin using supercritical adsorption

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