Exploitation of artichoke byproducts to obtain bioactive extracts enriched in inositols and caffeoylquinic acids by Microwave Assisted Extraction

Mena‐García, Adal; Rodríguez-Sánchez, S.; Ruiz‐Matute, Ana I.; Sanz, M. Luz

doi:10.1016/j.chroma.2019.460703

Cited by 32 publications

(44 citation statements)

References 26 publications

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“…Regardless of the heating strategy, an increase in severity led to increased phenolic yields at 220 • C, showing a maximum of 2.9 and 3.8 g GAE/100 g artichoke bracts (AB) in conventional and microwave heated equipment (Figure 2b), respectively. The phenolic content ranged from 2 to 12 g/100 g extract, and compared favorably with those reported for alcoholic extracts [6,7]. Similar behavior was observed for the antiradical properties determined by ABTS scavenging (Figure 2c) and expressed in g Trolox eq./100 g extract, with maximums of 22.9% in conventional extraction and 27.2% in microwave heating at the highest temperature, comparable or superior to the potency reported for ethanolic extracts [6,8].…”

Section: Extraction Of Bioactive Fractionssupporting

confidence: 79%

“…Over the last years, attempts have been made to find possible uses for artichoke by-products (bracts, leaves, and stems) [ 4 ]. These by-products are a source of fatty acids [ 5 ], inulin, fiber, minerals [ 6 ], inositols [ 7 ], and phenolic compounds [ 2 , 6 , 7 , 8 , 9 , 10 , 11 ], suitable for the production of dietary supplements and food additives.…”

Section: Introductionmentioning

confidence: 99%

“…Ultrasound-assisted extraction with water [ 12 ] and also with 60% methanol [ 6 ] enhanced the extraction of phenolics and prebiotic fructans [ 13 ]. Microwave assisted extraction and pressurized extraction with water have been used for the extraction of inositols and inulin [ 14 ] or caffeoylquinic acids [ 7 ]. Pressurized hot water extraction was used to extract caffeoylquinic acids and flavone glycosides without formation of artefacts at high temperatures [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Valorization of Artichoke Industrial By-Products Using Green Extraction Technologies: Formulation of Hydrogels in Combination with Paulownia Extracts

et al. 2021

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The integral valorization of artichoke bracts generated during industrial canning of artichoke was assessed. The extraction of bioactive compounds was addressed with pressurized hot water under subcritical conditions. The performance of this stage on the extraction of phenolics with antioxidant properties and the saccharidic fraction using conventional and microwave heating was compared. The microwave assisted process was more efficient than the conventional one regarding extraction yields of total solubles, and glucose and fructose oligomers and phenolics, because lower operational temperatures and shorter times were needed. Degradation of fructose oligomers was observed at temperatures higher than 160 °C, whereas the maximal phenolic content occurred at 220 °C. Both the extracts and the residual solids, obtained at conditions leading to maximum phenolics yields, were evaluated for the production of starch-based hydrogels, supplemented with Paulownia leaves’ aqueous extracts.

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Section: Extraction Of Bioactive Fractionssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Valorization of Artichoke Industrial By-Products Using Green Extraction Technologies: Formulation of Hydrogels in Combination with Paulownia Extracts

et al. 2021

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“…[47,48] Whereas caffeoylquinic acids seem the major source of caffeic acid, sinapine, the choline ester of sinapic acid, is the main source of sinapic acid in plants. It is worth mentioning that activations using microwave, [49,50] ultrasound, [51,52] or enzymes [53,54] can be used to assist extractions of these compounds. In addition, pressurized liquid extraction (PLE) [53,55,56] emerged also to recover such compounds.…”

Section: State Of the Artmentioning

confidence: 99%

Accessing p‐Hydroxycinnamic Acids: Chemical Synthesis, Biomass Recovery, or Engineered Microbial Production?

et al. 2020

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p-Hydroxycinnamic acids (i. e., p-coumaric, ferulic, sinapic, and caffeic acids) are phenolic compounds involved in the biosynthesis pathway of lignin. These naturally occurring molecules not only exhibit numerous attractive properties, such as antioxidant, anti-UV, and anticancer activities, but they also have been used as building blocks for the synthesis of tailored monomers and functional additives for the food/feed, cosmetic, and plastics sectors. Despite their numerous high value-added applications, the sourcing of p-hydroxycinnamic acids is not ensured at the industrial scale except for ferulic acid, and their production cost remains too high for commodity applications. These compounds can be either chemically synthesized or extracted from lignocellulosic biomass, and recently their production through bioconversion emerged. Herein the different strategies described in the literature to produce these valuable molecules are discussed.

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“…Recently, the search for environmental friendly methods for the fast extraction of bioactive carbohydrates has received increasing attention. Microwave-assisted extraction (MAE), pressurized liquid extraction and supercritical fluid extraction have been proposed as good alternatives to SLE [8,[12][13][14]. MAE uses microwave energy to heat up the sample in a more homogeneous way in order to extract the analytes from the matrix into the solvent with a considerable saving in processing time, solvent consumption, and energy.…”

Section: Introductionmentioning

confidence: 99%

Development of a microwave‐assisted extraction method for the recovery of bioactive inositols from lettuce (Lactuca sativa) byproducts

et al. 2020

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A microwave-assisted extraction (MAE) method was developed for the extraction of bioactive inositols (D-chiro-and myo-inositols) from lettuce (Lactuca sativa) leaves as a strategy for the revalorization of these agrofood residues. Gas chromatography-mass spectrometry was selected for the simultaneous determination of inositols and sugars (glucose, fructose, and sucrose) in these samples. A Box-Behnken experimental design was used to maximize the extraction of inositols based on the results of single factor tests. Optimal conditions of the extraction process were as follows: liquid-to-solid ratio of 100:1 v/w, 40°C, 30 min extraction time, 20:80 ethanol:water (v/v), and one extraction cycle. When compared with conventional solid-liquid extraction (SLE), MAE was found to be more effective for the extraction of target bioactive carbohydrates (MAE 5.42 mg/g dry sample versus SLE 4.01 mg/g dry sample). Then, MAE methodology was applied to the extraction of inositols from L. sativa leaves of different varieties (var. longifolia, var. capitata and var. crispa). Dchiro-and myo-inositol contents varied between 0.57-7.15 and 0.83-3.48 mg/g dry sample, respectively. Interfering sugars were removed from the extracts using a biotechnological procedure based on the use of Saccharomyces cerevisiae for 24 h. The developed methodology was a good alternative to classical procedures to obtain extracts enriched in inositols from lettuce residues, which could be of interest for the agrofood industry.

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Exploitation of artichoke byproducts to obtain bioactive extracts enriched in inositols and caffeoylquinic acids by Microwave Assisted Extraction

Cited by 32 publications

References 26 publications

Valorization of Artichoke Industrial By-Products Using Green Extraction Technologies: Formulation of Hydrogels in Combination with Paulownia Extracts

Valorization of Artichoke Industrial By-Products Using Green Extraction Technologies: Formulation of Hydrogels in Combination with Paulownia Extracts

Accessing p‐Hydroxycinnamic Acids: Chemical Synthesis, Biomass Recovery, or Engineered Microbial Production?

Development of a microwave‐assisted extraction method for the recovery of bioactive inositols from lettuce (Lactuca sativa) byproducts

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