Physiological Properties of Dietary Ellagitannin-Rich Preparations Obtained from Strawberry Pomace Using Different Extraction Methods

Juśkiewicz, Jerzy; Król, Bogusław; Kosmala, Monika; Milala, Joanna; Zduńczyk, Zenon; Żary-Sikorska, Ewa

doi:10.2478/pjfns-2013-0004

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…ETs were the main polyphenols found in the extracts, representing 26 ± 2%, 25 ± 2% and 40 ± 3% of the raspberry, strawberry and blackberry UEAE total polyphenols, respectively (Table 4), which is similar to the results of our previous work [14]. However, different results were found by Juśkiewicz et al (2015) for a seedless strawberry PPC extract obtained by EAE (90 min at 65 • C with Viscozyme L), where 96% of the TPC was ETs.…”

Section: Ueae Extracts Characterizationsupporting

confidence: 87%

“…Overall, the strawberry and blackberry UEAE extracts displayed the same composition, except for the sugar contents, which were about 40 g/100 g DE (Table 4) and the lipidic contents, which were assessed at 3.5 ± 0.4 and 14 ± 0.2 g/100 g DE, respectively. Juśkiewicz et al (2015) reported the same phenolic content for an aqueous polyphenolic extract obtained from a seedless strawberry PPC by EAE with Viscozyme L, which was evaluated to 7.8% of the total extract composition. The rest of the extract proximate composition varies, with protein and ash contents twice lower (8.0 and 7.5%, respectively) as obtained in this study.…”

Section: Ueae Extracts Characterizationmentioning

confidence: 87%

“…The rest of the extract proximate composition varies, with protein and ash contents twice lower (8.0 and 7.5%, respectively) as obtained in this study. These differences may find their sources in the nature of the vegetal matrix, as this study valorized a strawberry pomace containing a mix of achenes and seeds, while Juśkiewicz et al worked on a seedless strawberry PPC [43].…”

Section: Ueae Extracts Characterizationmentioning

confidence: 98%

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Optimized Single-Step Recovery of Lipophilic and Hydrophilic Compounds from Raspberry, Strawberry and Blackberry Pomaces Using a Simultaneous Ultrasound-Enzyme-Assisted Extraction (UEAE)

Davidson,

Louvet,

Meudec

et al. 2023

Antioxidants

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An ultrasound-enzyme-assisted extraction (UEAE) was optimized to extract, simultaneously, the hydrophilic and lipophilic compounds from three berry pomaces (raspberry, strawberry and blackberry). First, an enzyme screening designated a thermostable alkaline protease as the most suitable enzyme to recover, in an aqueous medium, the highest yields of polyphenols and oil in the most efficient way. Secondly, the selected enzyme was coupled to ultrasounds (US) in sequential and simultaneous combinations. The simultaneous US–alkaline enzyme combination was selected as a one-single-step process and was then optimized by definitive screening design (DSD). The optimized parameters were: US amplitude, 20% (raspberry pomace) or 70% (strawberry and blackberry pomaces); pH, 8; E/S ratio, 1% (w/w); S/L ratio, 6% (w/v); extraction time, 30 min; temperature, 60 °C. Compared to conventional extractions using organic solvents, the UEAE extracted all the polyphenols, with around 75% of the active polyphenols (measured by the DPPH● method) and up to 75% of the initial oil from the berry pomaces. Characterized lipophilic compounds were rich in polyunsaturated fatty acids (PUFAs), tocols and phytosterols. The polyphenolics were analyzed by UPLC-MS/MS; characteristic ellagitannins of the Rosaceae family (sanguiin H-6 or agrimoniin, sanguiin H-10, …) and ellagic acid conjugates were found as the major components.

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Section: Ueae Extracts Characterizationsupporting

confidence: 87%

Section: Ueae Extracts Characterizationmentioning

confidence: 87%

Section: Ueae Extracts Characterizationmentioning

confidence: 98%

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Optimized Single-Step Recovery of Lipophilic and Hydrophilic Compounds from Raspberry, Strawberry and Blackberry Pomaces Using a Simultaneous Ultrasound-Enzyme-Assisted Extraction (UEAE)

Davidson,

Louvet,

Meudec

et al. 2023

Antioxidants

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“…For example, it has been demonstrated that seeds contain a substantial amount of oil, characterized by a high level of α-linolenic acid, indicating its significant potential for cosmetic and pharmaceutical applications [11,12]. The seeds and strawberry waste are also characterized by a high content of hydrolyzable ellagitannins, demonstrating beneficial properties in gastrointestinal tract function, as evidenced by both in vitro [8,13] and in vivo studies [14,15]. Grzelak-Błaszczyk et al demonstrated that defatted seeds contain significant amounts of protein, dietary fiber, phenolics, vitamins, and minerals [16] and that therefore they are a valuable additive to bread [17].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Bioactive Components from Strawberry Seeds Residues Post Oil Extraction and Their Cosmetic Potential

Wójciak,

Żuk,

Sowa

et al. 2024

Applied Sciences

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Recently, there has been an increased interest in the valorization of byproducts generated during fruit processing. An example of this is the waste produced during the processing of strawberries. For instance, it has been evidenced that strawberries seeds can be a valuable source of oil. The goal of this paper was to investigate the potential of strawberry seed residues after oil extraction (defatted seeds) as a source of phenolics with possible cosmetic applications. The components were recovered using water and ethanol mixture, assisted by heat, ultrasound, and microwave. The extracts were characterized through ultra-high performance liquid chromatography with spectrophotometric and mass detectors (UPLC-DAD-MS), and the biological properties of the phenolic-rich fraction were assessed using antioxidant tests and a cell viability assay on human skin fibroblasts. The study revealed that defatted strawberry seeds are rich in low molecular weight phenolics, specifically in tiliroside, kaempferol 3-glucoside, and ellagic acid. Furthermore, the phenolic-rich fraction was effective in scavenging free radicals in human skin fibroblasts and showed cytoprotective activity against oxidative stress. This evidence suggests that defatted strawberry seeds are a valuable material for further processing to obtain a beneficial additive for skincare products.

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Metabolism of strawberry mono- and dimeric ellagitannins in rats fed a diet containing fructo-oligosaccharides

et al. 2015

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PurposeWe investigated the effects of dietary supplementation with strawberry extracts rich in ETs and fructo-oligosaccharides (FOS) on the intestinal microbiota and the formation of bacterial metabolites in the distal intestine, as well as the absorption of ET metabolites and antioxidant status in rats.MethodsRats were allocated into six groups of eight animals each and fed for 4 weeks with a control diet (group C), a control diet supplemented with FOS (group C + FOS) or modifications of these diets, in which a monomeric or dimeric ET-rich extract was added (groups ME and ME + FOS or DE and DE + FOS, respectively).ResultsThe extract addition, the FOS addition and their interaction significantly affected the total and selected bacterial counts in the caecal digesta (all P < 0.005). The total bacterial count was the highest in group C + FOS, lower in group DE and the lowest in group ME + FOS (10.6, 10.3 and 8.52 log cells/g, respectively; P ≤ 0.05). The total caecal content of ET metabolites was higher in the ME and ME + FOS group than in the DE and DE + FOS group, respectively (67.8 and 89.5 vs. 13.0 and 18.0 µg/g, respectively; P < 0.001). The total plasma concentration of ET metabolites was higher in the ME + FOS and DE + FOS group than in the ME group (248 and 281 vs. 8.13 ng/mL, respectively; P < 0.001).ConclusionsETs of the monomeric ET-rich extract are more prone to intestinal breakdown than those of the dimeric ET-rich extract, and absorption of their metabolites can be increased by dietary FOS; however, together, they evoke strong antibacterial activity.

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Physiological Properties of Dietary Ellagitannin-Rich Preparations Obtained from Strawberry Pomace Using Different Extraction Methods

Cited by 11 publications

References 30 publications

Optimized Single-Step Recovery of Lipophilic and Hydrophilic Compounds from Raspberry, Strawberry and Blackberry Pomaces Using a Simultaneous Ultrasound-Enzyme-Assisted Extraction (UEAE)

Optimized Single-Step Recovery of Lipophilic and Hydrophilic Compounds from Raspberry, Strawberry and Blackberry Pomaces Using a Simultaneous Ultrasound-Enzyme-Assisted Extraction (UEAE)

Recovery of Bioactive Components from Strawberry Seeds Residues Post Oil Extraction and Their Cosmetic Potential

Metabolism of strawberry mono- and dimeric ellagitannins in rats fed a diet containing fructo-oligosaccharides

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