Preparation of a low-alcohol extract of Rosmarinus officinalis using a reverse osmosis membrane

Bassani, Valquíria Linck; Casadebaig, J.; Jacob, Mohan V.; Menut, Chantal; Lechat, I.; Lamaty, G.

doi:10.1016/0378-5173(90)90101-9

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Apart from its lower energy consumption and capital costs, RO concentrated, in mild conditions and at a relatively high speed, several solutes in water medium if the osmotic pressure of the solutes is not too high. RO is designed when thermal damages are to be minimized and when intrinsic bioactivities have to be kept ( − ).…”

Section: Introductionmentioning

confidence: 99%

Anthocyanin and Flavonoid Production from Perilla frutescens: Pilot Plant Scale Processing Including Cross-Flow Microfiltration and Reverse Osmosis

Meng

Lozano

Bombarda

et al. 2006

J. Agric. Food Chem.

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Extraction and concentration at a pilot plant scale of anthocyanins and flavonoids from Perilla frutescens var. frutescens harvested in the Guangzhou area of China were investigated. The study of extraction efficiency using mineral acids and organic acids showed that 0.01 mol/L nitric acid was the most suitable to extract flavonoids from this slightly red leaf cultivar. The red extract contained 12 mg/L (as cyanidin equivalent) anthocyanins and other flavones. The multistep process included cross-flow microfiltration (CFM) with a ceramic type membrane, reverse osmosis (RO), and rotating evaporation (RE). The filtration fluxes were high and constant for CFM (150 L/h/m2 at 0.6 b) and for RO (22 L/h/m2 at 40 b). The red extract was concentrated 9.4 times by RO and then 5.4 times by RE. It contained 422 mg/L anthocyanins, representing 77% of the total extracted anthocyanin. The proportion of flavonoids was found unchanged during processing. The concentrated extract showed a pH of 2.7, and its free acidity was found to be 46% of the acidity added for extraction, because of the buffering capacity of the extract. At the concentration level reached, a crystallized deposit occurred and was identified as tartrate.

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Section: Introductionmentioning

confidence: 99%

Anthocyanin and Flavonoid Production from Perilla frutescens: Pilot Plant Scale Processing Including Cross-Flow Microfiltration and Reverse Osmosis

Meng

Lozano

Bombarda

et al. 2006

J. Agric. Food Chem.

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Diafiltration

Kovács

Czermak

2013

Encyclopedia of Membrane Science and Technology

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Membrane filtration represents a unique separation technique as it can be employed for both concentrating and purifying a multicomponent process stream. To achieve these twin‐objectives, diafiltration is required. Diafiltration is an operation mode of a pressure‐driven membrane filtration process in which a diluant (i.e.,∼water or any other solvent or buffer) is added to the process liquor in order to enhance the degree of separation of membrane‐retained macrosolutes from membrane‐permeable microsolutes. Depending on the separation target, diafiltration may be performed with microfiltration, ultrafiltration, nanofiltration, or reverse osmosis membranes. The separation target can be reached by using either batch or continuous processing mode. Diafiltration is an indispensable tool in separating multicomponent process streams and widely used in the food and beverage, chemical, biotechnological, and pharmaceutical industries. This article introduces the reader to the fundamentals of diafiltration. It provides a brief survey on the most important applications and discusses the various configurations, general design equations, control strategies, and diluant utilization strategies used in batch and continuous diafiltration practice

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An Evidence-Based Systematic Review of Rosemary (Rosmarinus officinalis) by the Natural Standard Research Collaboration

Ulbricht

Abrams

Brigham

et al. 2010

Journal of Dietary Supplements

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Preparation of a low-alcohol extract of Rosmarinus officinalis using a reverse osmosis membrane

Cited by 3 publications

References 5 publications

Anthocyanin and Flavonoid Production from Perilla frutescens: Pilot Plant Scale Processing Including Cross-Flow Microfiltration and Reverse Osmosis

Anthocyanin and Flavonoid Production from Perilla frutescens: Pilot Plant Scale Processing Including Cross-Flow Microfiltration and Reverse Osmosis

Diafiltration

An Evidence-Based Systematic Review of Rosemary (Rosmarinus officinalis) by the Natural Standard Research Collaboration

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