Recovery of anthocyanins from residues of Rubus fruticosus , Vaccinium myrtillus and Eugenia brasiliensis by ultrasound assisted extraction, pressurized liquid extraction and their combination

Machado, Ana Paula da Fonseca; Pereira, Ana Luiza Duarte; Barbero, Gerardo F.; Martínez, Julián

doi:10.1016/j.foodchem.2017.03.060

Cited by 131 publications

(83 citation statements)

References 39 publications

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“…As a consequence, 10 and 5 min were established for UAE and MAE as their respective optimum extraction time for both antioxidants. These values are much lower than the extraction times found in the bibliography (around 30 min) for other similar extraction methods [5,24,27].…”

Section: Extraction Timecontrasting

confidence: 61%

“…These authors also studied PLE in combination with UAE for the determination of the same bioactive compounds. The performance of UAE + PLE improved the extraction yields when compared to conventional Soxhlet extraction [24]. However, both works evaluated the influence of only two variables, the former studied the solvent type and temperature, and the latter evaluated the type of extraction and solvent.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extraction of Antioxidants from Blackberry (Rubus ulmifolius L.): Comparison between Ultrasound- and Microwave-Assisted Extraction Techniques

et al. 2019

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Berries are considered functional food because of their potential health benefits to consumers due to their high concentrations in bioactive compounds. The extraction process of their antioxidant compounds is a crucial step. In this work, ultrasound (UAE) and microwave (MAE) assisted extraction have been evaluated and compared for the recovery of total phenolic compounds (TPC) and total anthocyanins (TA) from blackberry. Since several variables have an influence on the extraction processes efficiency, a response surface method using a Box–Behnken design (BBD) was chosen for the optimization of UAE and MAE variables. Six variables (solvent, temperature, amplitude, cycle, pH, and sample:solvent ratio) were optimized for UAE while the optimization for MAE was performed on four variables (solvent, temperature, pH, and sample:solvent ratio). It has been proven that solvent and temperature have a significant influence on the extraction of both TA and TPC. Only 10 and 5 min were necessary to complete the UAE and MAE procedures, respectively. A precision study was also carried out, and coefficient of variation lower than 5% was determined. Non-significant differences were obtained when using UAE and MAE at their respective optimum conditions. Thus, the results demonstrated a successful potential use of both techniques for the extraction of TA and TPC from blackberry. In conclusion, this work shows interesting perspectives for quality control analytical laboratories for the development of rapid extraction techniques to quantify these antioxidant compounds in blackberries.

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Section: Extraction Timecontrasting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Extraction of Antioxidants from Blackberry (Rubus ulmifolius L.): Comparison between Ultrasound- and Microwave-Assisted Extraction Techniques

et al. 2019

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“…The recovery of anthocyanins from various plant materials (blueberries, blackberries, grumixama residues) by means of PLE at 353 K with water and aqueous ethanol alone and combined with ultrasound assistance was examined. The use of pressurized 70% ethanol combined with ultrasound assistance provided the largest total phenolics yield, but ultrasound-assisted extraction with this solvent at ambient conditions yielded the most anthocyanin product [119]. Ultrasound assistance combined with PLE with 80% aqueous methanol at 403 K and 13 MPa was used for the pretreatment of four varieties of algae for the recovery of phenolics from them [120].…”

Section: Methods Used With Sub-and Supercritical Fluid Extractionmentioning

confidence: 99%

Extraction by Subcritical and Supercritical Water, Methanol, Ethanol and Their Mixtures

Marcus

2018

Separations

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Hot, subcritical and supercritical water, methanol, ethanol and their binary mixtures have been employed to treat fuels (desulfurize coal and recover liquid fuels from coal and oil shales) and to extract valuable solutes from biomass. The properties of these solvents that are relevant to their extraction abilities are presented. Various extraction methods: accelerated solvent extraction (ASE), pressurized liquid extraction (PLE), supercritical fluid extraction (SFE, but excluding supercritical carbon dioxide) with these solvents, including microwave-and ultrasound-assisted extraction, are dealt with. The extraction systems are extensively illustrated and discussed.

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“…It is possible to observe in Table 1 that the current research into colorant extractions has been performed using either of the two systems, probe or bath; however, the ultrasonic bath was not the more adequate system for this. The frequencies normally employed in this system are more than 24 kHz, such as 37 kHz [31,32], while the physical effects dominate at lower frequencies [33]. In a study to extract anthocyanins, Cai, Qu, Lan, Zhao, Ma, Wan, Jing and Li [34], using a bath ultrasonic system, reported that the UAE is a long-time extraction method and resulted in a low anthocyanin yield.…”

Section: Ultrasonic Systemmentioning

confidence: 99%

“…Machado, Pereira, Barbero and Martínez [32] demonstrated the importance in the choice of solvent to be employed. Obtaining anthocyanins from residues of Rubus fruticosus, Vaccinium myrtillus and Eugenia brasiliensis, the authors observed different results using different solvents (water or ethanol).…”

Section: Solvent and Feedmentioning

confidence: 99%

Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

Strieder¹,

Silva²,

Meireles³

2019

fph

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The demand for natural colorants has boosted the search for innovative technologies to obtain them. Ultrasound-assisted extraction (UAE) is one of the new green techniques that has been studied due to its process advantages that include high yields, short extraction times and nonutilization of elevated temperatures. However, a nonstandardization of the UAE variables complicates comparisons and hinders progress in the studies of this topic. In this review, the focus is the verification and discussion of which UAE process conditions authors have used to obtain natural colorants. Thus, it is possible to confirm that some authors used ultrasonic systems that are not appropriate for performing a good extraction, that some used a great amount of solvent and a long extraction time, and that researchers did not express the main variables (nominal power, extraction time and sample mass) as a function of the specific energy applied to processing. Therefore, it is possible to conclude that some studies using UAE were not conducted to obtain the best results, and the expression of the variables as a function of specific energy can generate a standardization, which facilitates comparison among the results obtained by the scientific community.

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Recovery of anthocyanins from residues of Rubus fruticosus , Vaccinium myrtillus and Eugenia brasiliensis by ultrasound assisted extraction, pressurized liquid extraction and their combination

Cited by 131 publications

References 39 publications

Extraction of Antioxidants from Blackberry (Rubus ulmifolius L.): Comparison between Ultrasound- and Microwave-Assisted Extraction Techniques

Extraction of Antioxidants from Blackberry (Rubus ulmifolius L.): Comparison between Ultrasound- and Microwave-Assisted Extraction Techniques

Extraction by Subcritical and Supercritical Water, Methanol, Ethanol and Their Mixtures

Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

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