Compressed fluids extraction methods, yields, antioxidant activities, total phenolics and flavonoids content for Brazilian Mantiqueira hops

Veiga, Bruno Aguilar; Hamerski, Fabiane; Clausen, Mathias P.; Errico, Massimiliano; Scheer, Agnes de Paula; Corazza, Marcos L.

doi:10.1016/j.supflu.2020.105155

Cited by 21 publications

(12 citation statements)

References 44 publications

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“…Studies have described the extraction of bio-compounds from BSG by conventional solid-liquid extraction processes, such as maceration, infusion, and Soxhlet extraction [9][10][11]. However, alternative extraction methodologies based on compressed fluids have been proposed to efficiently obtain and recovery of different compounds, such as extraction of spent coffee grounds oil using high-pressure CO2 [12], high-pressure extraction of caffeine [13], pressurized hot water extraction of pectin [14], pressurized liquid extraction combined with dispersive liquid-liquid micro extraction of endocrine disrupting compounds from cheese [15], compressed extraction of total phenolics and flavonoids content in hops [16].…”

Section: Introductionmentioning

confidence: 99%

Pressurized liquid extraction of brewer’s spent grain: Kinetics and crude extracts characterization

Herbst

Hamerski

Errico

et al. 2021

Journal of Industrial and Engineering Chemistry

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In this study, extraction yield of valuable compounds from brewer's spent grain (BSG) using pressurized liquid extraction (PLE) was investigated varying temperature, solvent type, and flow rate at a constant pressure. The results were compared with Soxhlet extractions using the total phenolic compounds (TPC), total flavonoid compounds (TFC), antioxidant activity (AA), reducing sugars (RS), and total reducing sugars (TRS) as indices. The highest PLE extraction yield was 20.1 wt%, at 120°C, 2 mL/min using ethanol to water volume ratio of 0.5, at 10 MPa. The TPC, TFC, and AA content were favored by water and water/ethanol extractions and temperature increase. The highest AA was obtained with water at 120 °C and 4 mL/min achieving 9944, 4769 and 4096 µmol TE/100 g of BSG extract, respectively. PLE was capable of present high extraction yields maintaining the RS and TRS in the BSG matrix. In addition, BSG was defatted with compressed propane before the extraction with PLE, showing that 2 compressed propane is highly efficient in recovering the lipid fraction from BSG. The results demonstrated a great potential of water and different EtOH/Water solvent ratio at pressurized conditions for obtaining bio-compounds of BSG in a crude extract with expressive biological activity.

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Section: Introductionmentioning

confidence: 99%

Pressurized liquid extraction of brewer’s spent grain: Kinetics and crude extracts characterization

Herbst

Hamerski

Errico

et al. 2021

Journal of Industrial and Engineering Chemistry

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“…The group consisting of flavonoids also has important pharmacological activities against free radicals, with important anti-inflammatory, antiallergic, anti-carcinogenic, antimicrobial, hepatoprotective, antiviral and platelet protection action (Amri, Hossain, 2018;Veiga et al, 2021). Phenolic compounds also have activities against pathogens, prevent cardiovascular and neurodegenerative diseases and diabetes, are also important anticancer agents, anti-inflammatory, immune system stimulators and hormonal modulators (Ajuru, Williams, Ajuru, 2017).…”

Section: Resultsmentioning

confidence: 99%

Phytochemical and biological activities evaluation of latex from Himatanthus obovatus (Muell. Arg.) Woodson (Apocynaceae)

Ramada¹,

Filho

Ventura

et al. 2021

Sci. Elec. Arch.

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Himatanthus obovatus is a tree species that has laticifers in its aerial organs, where it is used in folk medicine. The aim of this work was to evaluate the latex of H. obovatus regarding its phytochemical composition and biological activities. The latex was collected and lyophilized, yield (%) was carried out, phytochemical prospection for several groups, determination of the content of flavonoids, phenolics and total tannins, antioxidant activity in reducing DPPH, antifungal activity on the Candida genus, antibacterial for Escherichia coli, Staphylococcus aureus, Salmonella serovar Enteritidis and Thyphymurium and Enterococcus faecalis, hemolytic activity on human erythrocytes and cytotoxicity bioassay on Artemia salina. The latex yield was 19.05%, positive presence of several groups of phytocompounds was observed, total flavonoid content of 78.80 mg QE 100 g-1, total phenolic compounds of 166.51 mg AGE g 100-1, total tannins of 14.81 mg TAE 100 g-1, antioxidant activity IC50 = 178.87 µg mL-1, antifungal activity for all Candida strains and antibacterial only for E. coli and E. faecalis, hemolytic activity between 68-18% and cytotoxicity with LC50 = 433.97 µg mL-1 on A. salina. The latex of Himatanthus obovatus demonstrated in this study, important phytochemical data and biological activities.

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“…The total phenolic content (TPC) of extracts was determined using the Folin–Ciocalteu colorimetric method, and gallic acid was used as a standard (Veiga et al., 2021). The corn silk extract, 0.25 ml, was mixed with 0.25 ml of the Folin–Ciocalteu reagent and 1 ml of 7.5% (w/v) Na 2 CO 3 solution for 1 hr at room temperature.…”

Section: Methodsmentioning

confidence: 99%

A comparative evaluation of nutritional characteristics, physical properties, and volatile profiles of sweet corn subjected to different drying methods

et al. 2021

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Background and objectives Fresh sweet corn is vulnerable to microbial damage and difficult to preservation at ambient temperature due to the high water and sugar contents. Therefore, in the present study, fresh sweet corn kernels were subjected to hot air drying (HAD), vacuum freeze drying (VFD), microwave drying (MD), and short‐ and medium‐wave infrared drying (SMIRD). Findings Different drying ways of dehydrated sweet corns were compared in terms of physical properties, nutritional components, volatile compounds, and antioxidant capacity. After thermal treatment, sweet corn will form more volatile components and increase the flavor of sweet corn, while sweet corn treated by VFD will lose a lot of volatile components and weaken the flavor. Conclusions The results demonstrated that VFD products exhibited higher rehydration capacity, more nutrient retention, and better antioxidant capacity with fewer volatile compounds. A total of 63 different volatile compounds were detected in dried sweet corns. The variety of volatile substances was the maximum in the SMIRD (55), followed by HAD (35), MD (28), fresh (22), and VFD (9). Significanceand novelty Overall, this study would be fundamental for selecting more applicable drying methods to obtain desirable quality of dried sweet corn.

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Compressed fluids extraction methods, yields, antioxidant activities, total phenolics and flavonoids content for Brazilian Mantiqueira hops

Cited by 21 publications

References 44 publications

Pressurized liquid extraction of brewer’s spent grain: Kinetics and crude extracts characterization

Pressurized liquid extraction of brewer’s spent grain: Kinetics and crude extracts characterization

Phytochemical and biological activities evaluation of latex from Himatanthus obovatus (Muell. Arg.) Woodson (Apocynaceae)

A comparative evaluation of nutritional characteristics, physical properties, and volatile profiles of sweet corn subjected to different drying methods

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