Recovery of Perillaldehyde from Hydrodistillation Condensate ofPerilla frutescens(L.) Britton var.crispaF.viridisLeaves Using Macroporous Resin Adsorption

Recent development in biological activities and safety concerns of perillaldehyde from perilla plants: A review

Monoterpene Perillaldehyde (PAE) is a major component of the essential oil extracted from perilla plants (Perilla frutescens), which has been used as a leafy vegetable and a medicinal agent. PAE has gained a lot of attention in recent years because of its antifungal and other microbial activities and, human health benefits. PAE has also been used as food additives, perfume ingredients, and traditional medicine concoctions. Biological analyses of PAE have revealed that it has good antioxidant activities and can serve as organic fruit and food preservative. Animal studies indicated potent anticancer, anti-depressant, and anti-inflammatory effects of PAE. Also, PAE is certified "generally recognized as safe" (GRAS) and not mutagenic. However, moderation during usage is advisable, as minor adverse effects are associated with a very high dosage. Despite the newly reported findings, its properties have not been thoroughly summarized and reviewed. Also, clinical trials and official large-scale field applications of PAE in the agricultural sectors are yet to be reported. In this review, updated PAE research progress was provided, focusing on its antifungal and other antimicrobial properties and the mechanisms behind it, phytochemical profile, pharmacological effects, and safety concerns.HighlightsIsolation and recovery techniques of PAE from perilla plants have been developed and improved in recent years.PAE is a potential anti-oxidant and antifungal agent that can be widely used in the food industry.PAE can be developed into drug ingredients for pharmaceutical industries due to its anti-inflammatory, anti-cancer and anti-depressant activities.PAE can be safely used in human when low and moderate dosage is used.

Separation of Glycyrrhizic Acid and Its Derivants from Hydrolyzation in Subcritical Water by Macroporous Resin

Glycyrrhizic acid (GL) and its derivants, glycyrrhetinic acid 3-O-mono-β-d-glucuronide (GAMG) and glycyrrhetinic acid (GA) hydrolyzed in subcritical water, are bioactive substances and edulcorators. In this work, a separation strategy for these three substances was established. The effects of adsorbent and eluent were investigated by static/dynamic adsorption and multi-stage desorption with the mechanism analysis. The adsorption of them onto EXA50 resin was well fitted by the pseudo second-order kinetic model. The optimal dynamic adsorption flow rate was 6 bed volume (BV)/h, and water of pH = 12 was used to elute GL at 4 BV/h, then n-buthanol was used subsequently to elute GA at 1 BV/h, and finally 90% ethanol was applied to elute GAMG at 2 BV/h. As a result, purities of these compounds increased, which demonstrated that this adsorption-desorption technology was simple and efficient, and indicated the potential for large-scale purification and preparation of GL and its derivants in the future.

Adsorption and Desorption Studies of Anthocyanins from Black Peanut Skins on Macroporous Resins

Adsorption of black peanut skin anthocyanins, a natural pigment, onto various macroporous resins was optimized to develop a potential approach for large-scale production of black peanut skin anthocyanins. Seven different macroporous resins (AB-8, SP-207, LS-305A, HP-20, LS-305, DM-21 and LS-610B) were evaluated for the adsorption properties of the anthocyanins extracted from the black peanut skins of Arachis hypogaea L. The adsorption experiment proved that compared to AB-8, SP-207 and LS-305A, four resins, i.e., LS-610B, DM-21, LS-305 and HP-20 have relatively higher capacity of adsorbing black peanut skin anthocyanins from the aqueous solution, which are verified by the related adsorption experiments. The adsorption isotherm data was successfully described by Langmuir isotherm model and the pseudo-second-order rate model simulates the kinetic process well. Column adsorption and desorption tests further proved DM-21 is a promising adsorbent for field applications to recover black peanut skin anthocyanins from aqueous solution. The overall yield of pigment product was 14% based on dried black peanut skin, and anthocyanins purity is at about 5.7% in the pigment product.

Purification of phosvitin phosphopeptides using macro-mesoporous TiO2

Purification of phosvitin phosphopeptides from egg-yolk protein hydrolysates using macro-mesoporous TiO₂.