Comparative Study on Microencapsulation of Lavender (Lavandula angustifolia Mill.) and Peppermint (Mentha piperita L.) Essential Oils via Spray-Drying Technique

Essential oils have been studied for various applications, including for therapeutic purposes. There is extensive literature regarding their properties; however, their low stability limits their application. Generally, the microencapsulation of essential oils allows enhanced stability and enables the potential incorporation in solid dosage forms. Lavender and peppermint oils were encapsulated in microparticles using a spray-drying technique under optimized conditions: 170 °C temperature, 35 m3/h aspiration volume flow, and 7.5 mL/min feed flow. Arabic gum and maltodextrin were used as coating polymers individually in varying concentrations from 5 to 20% (w/v) and in combination. The microparticles were studied for morphology, particle size, oil content, and flowability. The formulated powder particles showed a high yield of 71 to 84%, mean diameter 2.41 to 5.99 µm, and total oil content of up to 10.80%. The results showed that both the wall material type and concentration, as well as the type of essential oil, significantly affected the encapsulation process and the final particle characteristics. Our study has demonstrated that the encapsulation of lavender and peppermint oils in Arabic gum/maltodextrin microparticles by spray-drying represents a feasible approach for the conversion of liquids into solids regarding their further use in powder technology.

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Microencapsulation ofβ-Carotene by Spray Drying: Effect of Wall Material Concentration and Drying Inlet Temperature

International Journal of Food Science ◽

10.1155/2019/8914852 ◽

2019 ◽

Vol 2019 ◽

pp. 1-12 ◽

Cited By ~ 10

Author(s):

Luiz C. Corrêa-Filho ◽

Maria M. Lourenço ◽

Margarida Moldão-Martins ◽

Vítor D. Alves

Keyword(s):

Antioxidant Activity ◽

Spray Drying ◽

Encapsulation Efficiency ◽

Fruits And Vegetables ◽

Wall Material ◽

Inlet Temperature ◽

Carotene Content ◽

Arabic Gum ◽

Air Inlet ◽

Adverse Environmental Conditions

Carotenoids are a class of natural pigments found mainly in fruits and vegetables. Among them,β-carotene is regarded the most potent precursor of vitamin A. However, it is susceptible to oxidation upon exposure to oxygen, light, and heat, which can result in loss of colour, antioxidant activity, and vitamin activity. Thus, the objective of this work was to study the microencapsulation process ofβ-carotene by spray drying, using arabic gum as wall material, to protect it against adverse environmental conditions. This was carried out using the response surface methodology coupled to a central composite rotatable design, evaluating simultaneously the effect of drying air inlet temperature (110-200°C) and the wall material concentration (5-35%) on the drying yield, encapsulation efficiency, loading capacity, and antioxidant activity. In addition, morphology and particles size distribution were evaluated. Scanning electron microscopy images have shown that the particles were microcapsules with a smooth surface when produced at the higher drying temperatures tested, most of them having a diameter lower than 10μm. The conditions that enabled obtaining simultaneously arabic gum microparticles with higherβ-carotene content, higher encapsulation efficiency, and higher drying yield were a wall material concentration of 11.9% and a drying inlet temperature of 173°C. The systematic approach used for the study ofβ-carotene microencapsulation process by spray drying using arabic gum may be easily applied for other core and wall materials.

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Microencapsulation of Pineapple Peel Extract by Spray Drying Using Maltodextrin, Inulin, and Arabic Gum as Wall Matrices

Foods ◽

10.3390/foods9060718 ◽

2020 ◽

Vol 9 (6) ◽

pp. 718 ◽

Cited By ~ 1

Author(s):

Sofia C. Lourenço ◽

Margarida Moldão-Martins ◽

Vítor D. Alves

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Spray Drying ◽

Spherical Shape ◽

Large Degree ◽

Wall Material ◽

Arabic Gum ◽

Hausner Ratio ◽

Pineapple Peel ◽

Drying Technology

A pineapple peel hydroalcoholic extract rich in phenolic compounds, was stabilized by microencapsulation using spray drying technology, with maltodextrin, inulin, and arabic gum as wall materials. The influence of the type of wall material and drying temperature (150 and 190 °C) on the particles properties was studied. The particles presented a spherical shape with a diameter ranging from approximately 1.3 to 18.2 µm, the exception being the ones with inulin that showed a large degree of agglomeration. All powders produced presented an intermediate cohesiveness and a fair to good flowability according to Carr index and Hausner ratio, which envisages suitable handling properties at an industrial scale. The microencapsulation processes using maltodextrin and arabic gum at 150 °C were the ones that showed higher maintenance of the antioxidant activity of compounds present in the extract before encapsulation during spray drying. In addition, the microparticles obtained were quite efficient in stabilizing the encapsulated phenolic compounds, as their antioxidant activity did not change significantly during six months of storage at 5 °C.

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Microencapsulation of Lemongrass (Cymbopogon citratus) Essential Oil Via Spray Drying: Effects of Feed Emulsion Parameters

Processes ◽

10.3390/pr8010040 ◽

2020 ◽

Vol 8 (1) ◽

pp. 40 ◽

Cited By ~ 5

Author(s):

Nguyen Phu Thuong Nhan ◽

Vo Tan Thanh ◽

Mai Huynh Cang ◽

Tri Duc Lam ◽

Nguyen Cam Huong ◽

...

Keyword(s):

Essential Oil ◽

Essential Oils ◽

Spray Drying ◽

Gum Arabic ◽

Core Material ◽

Wall Material ◽

Cymbopogon Citratus ◽

Encapsulation Process ◽

Wall Materials ◽

Lemongrass Essential Oil

The purpose of this study was to attempt the encapsulation of lemongrass (Cymbopogon citratus) essential oil utilizing spray drying technique. An array of process parameters including concentration of wall (15–30%), type of wall materials (maltodextrin, maltodextrin and gum Arabic mixture), and concentration of essential oil (0.5–2.0%) were thoroughly investigated. The results show that the use of sole maltodextrin as encapsulant gave microcapsules characteristics comparable to that of powder produced using maltodextrin and gum Arabic mixture. The encapsulation process that was performed with maltodextrin at the concentration of 30% as wall material and lemongrass essential oil at the concentration of 1.5% as core material showed highest drying yield (84.49%), microencapsulation yield (89.31%) and microencapsulation efficiency (84.75%). Encapsulated essential oils retained most of their major constituents in comparison with the bare essential oils without any significant compromise in product quality.

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Microencapsulation of GuaLou Seed Oil by Spray Drying

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.554-556.934 ◽

2012 ◽

Vol 554-556 ◽

pp. 934-937

Author(s):

Jian Yu ◽

Xiang Hong Li ◽

Yong Le Liu ◽

Chi Ling Li

Keyword(s):

Spray Drying ◽

Air Temperature ◽

Seed Oil ◽

Core Material ◽

Wall Material ◽

Process Conditions ◽

Arabic Gum ◽

Solids Content ◽

Drying Conditions ◽

Best Parameters

The objective of this work was to study the influence of some process conditions on the microencapsulation of Gualou seed oil by spray drying. The results showed that the best parameters of microencapsulation were as follows: the ratio of arabic gum to maltodextrin was 1:1, and that of core material to wall material was 2:3; and the total solids content was 25%. The optimum spray drying conditions were that the air temperature of inlet was 180 °C, and that of outlet was 80 °C; the homogenizing pressure was 35MPa. The maximum microencapsulation efficiency was 86±0.95%.

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Microencapsulation of Tomato (Solanum lycopersicum L.) Pomace Ethanolic Extract by Spray Drying: Optimization of Process Conditions

Applied Sciences ◽

10.3390/app9030612 ◽

2019 ◽

Vol 9 (3) ◽

pp. 612 ◽

Cited By ~ 7

Author(s):

Luiz Corrêa-Filho ◽

Sofia Lourenço ◽

Daniel Duarte ◽

Margarida Moldão-Martins ◽

Vítor Alves

Keyword(s):

Spray Drying ◽

Ethanolic Extract ◽

Core Material ◽

Wall Material ◽

Process Conditions ◽

Inlet Temperature ◽

Sem Images ◽

Arabic Gum ◽

Tomato Pomace ◽

Solanum Lycopersicum L

Microencapsulation by spray-drying is a process used in the stabilization of active compounds from various natural sources, such as tomato by-products, with the purpose to be used as additives in the food industry. The aim of this work was to study the effects of wall material and spray drying conditions on physicochemical properties of microcapsules loaded with lycopene rich extract from tomato pomace. The assays were carried out with ethanolic tomato pomace extract as core material and arabic gum or inulin as wall materials. A central composite rotatable design was used to evaluate the effect of drying air inlet temperature (110–200 °C) and concentration of arabic gum (5–35 wt %) or inulin (5–25 wt %) on the antioxidant activity, encapsulation efficiency, loading capacity, and drying yield. SEM images showed that the produced particles were in the category of skin-forming structures. The most suitable conditions, within the ranges studied, to obtain lycopene loaded microparticles were a biopolymer concentration of 10 wt % for both materials and an inlet temperature of 200 and 160 °C for arabic gum and inulin, respectively. Arabic gum and inulin possessed a good performance in the encapsulation of tomato pomace extract by spray drying. It is envisaged that the capsules produced have good potential to be incorporated in foods systems with diverse chemical and physical properties.

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Microencapsulation of Citronella Oil with Carboxymethylated Tamarind Gum

Walailak Journal of Science and Technology (WJST) ◽

10.48048/wjst.2018.3303 ◽

2017 ◽

Vol 15 (7) ◽

pp. 515-527

Author(s):

Keonakhone KHOUNVILAY ◽

Berta Nogueiro ESTEVINHO ◽

Fernando Alberto ROCHA ◽

José María OLIVEIRA ◽

António VICENTE ◽

...

Keyword(s):

Smooth Surface ◽

Encapsulation Efficiency ◽

Oil Content ◽

Spherical Shape ◽

Wall Material ◽

Fluid Viscosity ◽

Emulsion Droplet ◽

Citronella Oil ◽

Total Oil ◽

Scanning Electron

Tamarind gum (TG) and carboxymethylated tamarind gum (CTG) were used as wall material to prepare citronella oil microcapsules by spray-drying. The aim of this work was to study the effect of wall-to-core ratio and fluid viscosity on emulsion droplet and microcapsule size, in order to maximize encapsulation efficiency (EE). EE was directly influenced by gum-to-oil ratio variations. Results showed that emulsion droplet size (D32) of CTG ranged between 0.18 to1.31 mm, smaller than those obtained for TG, which ranged from 0.87 to 2.91 mm. CTG microcapsules had a smooth surface and a spherical shape, as observed by scanning electron microscopy (SEM). Surface oil content and total oil content affected encapsulation efficiency. TG microcapsules showed lower EE than CTG microcapsules, which was related to the viscosity of gum to oil ratio. The maximum EE occurred at 1.14 gum to oil ratio for CTG microcapsules (87 %).

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Microencapsulation of Lipase and Savinase Enzymes by Spray Drying Using Arabic Gum as Wall Material

Journal of Encapsulation and Adsorption Sciences ◽

10.4236/jeas.2016.64012 ◽

2016 ◽

Vol 06 (04) ◽

pp. 161-173 ◽

Cited By ~ 4

Author(s):

Torres Andrea ◽

Ferrándiz Marcela ◽

Capablanca Lucía ◽

Franco Esther ◽

Mira Elena ◽

...

Keyword(s):

Spray Drying ◽

Wall Material ◽

Arabic Gum

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The study on the effect of irrigation levels and mulch application on growth indices and essential oil content of peppermint (Mentha piperita L.)

Planta Medica ◽

10.1055/s-0031-1282331 ◽

2011 ◽

Vol 77 (12) ◽

Author(s):

S Shahriari

Keyword(s):

Essential Oil ◽

Oil Content ◽

Mentha Piperita ◽

Growth Indices ◽

Irrigation Levels

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THE ACTIVITY OF ESSENTIAL OILS OBTAINED FROM SPECIES AND INTERSPECIES HYBRIDS OF THE Mentha GENUS AGAINST SELECTED PLANT PATHOGENIC BACTERIA

Acta Scientiarum Polonorum Hortorum Cultus ◽

10.24326/asphc.2018.6.17 ◽

2018 ◽

Vol 17 (6) ◽

pp. 167-174 ◽

Cited By ~ 1

Author(s):

Małgorzata Schollenberger ◽

Tomasz M. Staniek ◽

Elżbieta Paduch-Cichal ◽

Beata Dasiewicz ◽

Agnieszka Gadomska-Gajadhur ◽

...

Keyword(s):

Essential Oils ◽

Pseudomonas Syringae ◽

Pathogenic Bacteria ◽

Antimicrobial Effect ◽

Mentha Piperita ◽

Mentha Spicata ◽

Plant Essential Oils ◽

Plant Pathogenic Bacteria ◽

Interspecies Hybrids

Plant essential oils of six aromatic herb species and interspecies hybrids of the family Lamiaceae – chocolate mint (Mentha piperita × ‘Chocolate’), pineapple mint (Mentha suaveolens ‘Variegata’), apple mint (Mentha × rotundifolia), spearmint (Mentha spicata), orange mint (Mentha × piperita ‘Granada’) and strawberry mint (Mentha × villosa ‘Strawberry’) – were investigated for antimicrobial effects against plant pathogenic bacteria: Agrobacterium tumefaciens, Pseudomonas syringae pv. syringae and Xanthomonas arboricola pv. corylina. The screening was carried out in vitro on agar plates filled with the target organism. All essential oils screened exhibited a higher level of antibacterial activity against A. tumefaciens and X. arboricola pv. corylina than streptomycin used as a standard in all tests. The antimicrobial effect of streptomycin and five mint oils was at the same level for P. syringae pv. syringae. There were no significant differences in the influence of the chocolate mint oil on the growth inhibition of all bacteria tested. Plant essential oils from pineapple mint, apple mint, spearmint and strawberry mint showed the weakest antimicrobial activity against P. syringae pv. syringae and the strongest towards A. tumefaciens and X. arboricola pv. corylina. The essential oils from strawberry mint, pineapple mint, spearmint and apple mint had the strongest effect on A. tumefaciens, and the lowest inhibitory activity was exhibited by the chocolate mint and orange mint essential oils. X. arboricola pv. corylina was the most sensitive to the strawberry mint, pineapple mint and spearmint oils. The chocolate mint oil showed the greatest activity against P. syringae pv. syringae.

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