Membrane-Based Operations in the Fruit Juice Processing Industry: A Review

Conidi, Carmela; Castro-Muñoz, Roberto; Cassano, Alfredo

doi:10.3390/beverages6010018

Cited by 88 publications

(39 citation statements)

References 173 publications

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“…Furthermore, this process is not limited by high osmotic pressure and allows to reach concentration levels similar to those obtained in thermal evaporation [ 11 ]. Typical applications have been reported in the treatment of hypersaline waters [ 12 ] and radioactive wastewaters [ 13 ], concentration of dye solutions [ 14 ], and fruit juices [ 15 , 16 ]. In this process a water vapor transfer is promoted through a macroporous hydrophobic membrane under a vapor pressure gradient generated by a temperature difference applied between the two sides of the membrane [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Concentration of Bioactive Phenolic Compounds in Olive Mill Wastewater by Direct Contact Membrane Distillation

et al. 2021

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Olive mill wastewater (OMW), generated as a by-product of olive oil production, is considered one of the most polluting effluents produced by the agro-food industry, due to its high concentration of organic matter and nutrients. However, OMW is rich in several polyphenols, representing compounds with remarkable biological properties. This study aimed to analyze the chemical profile as well as the antioxidant and anti-obesity properties of concentrated fractions obtained from microfiltered OMW treated by direct contact membrane distillation (DCMD). Ultra-high performance liquid chromatography (UHPLC) analyses were applied to quantify some phenols selected as phytochemical markers. Moreover, a-Amylase, a-glucosidase, and lipase inhibitory activity were investigated together with the antioxidant activity by means of assays, namely b-carotene bleaching, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic) acid (ABTS) diammonium salts, 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, and Ferric Reducing Activity Power (FRAP) tests. MD retentate—which has content of about five times greater of hydroxytyrosol and verbascoside and about 7 times greater of oleuropein than the feed—was more active as an antioxidant in all applied assays. Of interest is the result obtained in the DPPH test (an inhibitory concentration 50% (IC50) of 9.8 mg/mL in comparison to the feed (IC50 of 97.2 mg/mL)) and in the ABTS assay (an IC50 of 0.4 mg/mL in comparison to the feed (IC50 of 1.2 mg/mL)).

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Section: Introductionmentioning

confidence: 99%

Concentration of Bioactive Phenolic Compounds in Olive Mill Wastewater by Direct Contact Membrane Distillation

et al. 2021

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“…New membrane processes including membrane distillation (MD), osmotic distillation (OD) and pervaporation (PV) have been investigated in the last years for fruit juice concentration and recovery of aroma compounds [15].…”

Section: Introductionmentioning

confidence: 99%

Perspective of Membrane Technology in Pomegranate Juice Processing: A Review

Conidi

Drioli

Cassano

2020

Foods

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Pomegranate (Punica granatum L.) juice is well recognized for its high content of phytochemicals with proven health-promoting effects. Conventional processing techniques including clarification with fining agents, pasteurization and thermal concentration have significant influences on bioactive compounds and antioxidant activity of the juice. The growing consumers demand for high-quality pomegranate juice as well as the industrial interest for the production of functional foods, nutraceuticals, and cosmetics from its bioactive compounds have promoted the interest for minimal processing technologies. In this context, membrane-based operations represent an innovative approach to improve the overall quality of pomegranate juice production. This review focuses on the recent advances and developments related to the application of membrane technology in pomegranate juice processing. Conventional pressure-driven membrane operations and innovative membrane operations, such as osmotic distillation and pervaporation, are discussed in relation to their potential in juice clarification, fractionation, concentration and aroma recovery. Their implementation in integrated systems offer new opportunities to improve the healthiness and quality of the juice as well as to recover, purify and concentrate bioactive compounds for the formulation of functional ingredients.

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“…The most advantage of RO process is that it can be conducted at ambient temperature (Baker, 2012). Thus, the advantages of RO process over traditional evaporation are not subjected to lower heat damage or losses in sensitive compounds, increase in aroma retention (Conidi, Castro‐Muñoz, & Cassano, 2020; Kumar, Ladaniya, Gurjar, Mendke, & Kumar, 2020). Besides, RO process consumes lower energy than the evaporation (Gude, 2011).…”

Section: Introductionmentioning

confidence: 99%

Technical assessment of reverse osmosis for concentration of fresh tea leaf extract

Lai

Doan

Nguyễn

2021

J Food Process Engineering

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This paper focused on the concentration of waste fresh tea leaf extract, byproduct of tea processing, by application of reverse osmosis. The concentration was carried out by plate and frame crossflow system equipped HR98PP membrane, operating as concentration mode with full recirculation of retentate. Results show that permeate flux increased with increase in operating pressure. Modeling of permeate flux based on osmotic pressure model at 30 and 40 bar of operating pressure was proposed. Hermia's model was applied for analyzed the membrane fouling in operation process. Good agreement between complete pore blocking model and experimental data was found. The recovery yields and contents of total solid (TS), total polyphenols (PPs) and antioxidant capacity (AC), consequently effectiveness, at 40 bar of operating pressure were higher than those at 30 bar. At 40 bar of operating pressure and 7.57 of concentration factor, the recovery yields of TS, PPs, and AC were 83.7, 85.1, and 79.6%, respectively. Contents of TS, PPs, and AC in retentate and permeate were 64.62 and 1.91 g/L; 25.82 and 0.61 g GAE/L; 97.87 and 3.35 mM TEAC, respectively. Maximum theoretical content of TS at 40 bar was estimated as 341 g/L. Results imply that it is potential to apply reverse osmosis for concentration of waste fresh tea leaf extract to produce instant powder with high content of polyphenols. Practical applications The concentration of waste fresh tea leaf extract by reverse osmosis membrane Modeling of permeate flux in reverse osmosis Fouling mechanism was analyzed by Hermia's model. Recovery yields and contents of total solid, total polyphenols and antioxidant capacity in concentrate against concentration factor were estimated.

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Membrane-Based Operations in the Fruit Juice Processing Industry: A Review

Cited by 88 publications

References 173 publications

Concentration of Bioactive Phenolic Compounds in Olive Mill Wastewater by Direct Contact Membrane Distillation

Concentration of Bioactive Phenolic Compounds in Olive Mill Wastewater by Direct Contact Membrane Distillation

Perspective of Membrane Technology in Pomegranate Juice Processing: A Review

Technical assessment of reverse osmosis for concentration of fresh tea leaf extract

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